Downhole tools having controlled degradation and method

A downhole assembly includes a downhole tool including a degradable-on-demand material including: a matrix material; and, a unit in contact with the matrix material. The unit includes a core including an energetic material configured to generate energy upon activation to facilitate degradation of the downhole tool; and, an activator disposed in contact with the core, the activator including a triggering system having an electrical circuit and an igniter within the electrical circuit, the electrical circuit having an open condition and a closed condition, the electrical circuit configured to be in the closed condition after movement of an object downhole that engages directly or indirectly with the triggering system, and the igniter arranged to ignite the energetic material in the closed condition of the electrical circuit. In the open condition of the electrical circuit the igniter is inactive, and in the closed condition of the electrical circuit the igniter is activated.

Controlled electrolytic degradation of downhole tools

Controlled electrolytic degradation of downhole tools

Controlled electrolytic degradation of downhole tools

CONSUMABLE DOWNHOLE TOOLS

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is convened to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non- explosive solid, such as thermite.

Method for removing a consumable downhole tool

A method for providing a torch apparatus into a well bore for providing heat to a material that includes the step of inserting the torch apparatus into the well bore, such that a plurality of slots along the torch apparatus are oriented to provide the heat and a source of oxygen to the material. The method further includes igniting a fuel load of the torch apparatus to provide the heat and the source of oxygen through the plurality of slots to the material so that the portion of the material is at least partially consumed. The interstitial spaces between the plurality of slots allow longitudinal flow of heat and the source of oxygen along the torch apparatus without interfering with the flow of heat and the source of oxygen through the slots.

PUMP OFF JUNK MILL

A device for removing junk from a well by attaching to a tubing string a mill body with a removable milling core and lowering the assembly into a well. A movable collet and check valve are located in the milling core. The milling core can be separated from the mill body by dropping a ball bearing into the tubing and then feeding water under pressure into the tubing behind the ball bearing.

Drilling assembly for removal of an obstacle in a conduit

A drilling assembly 1 for drilling through an object in a petroleum well has a drill bit assembly 3 and cutting assembly 4 attached to a rotatable drive assembly 5. The cutting assembly has a hole saw 42, and is resiliently displaceable with respect to the drill bit assembly. The drilling assembly has a barrier 6 within a tubular body, dividing the interior of the tubular body. The drill bit may comprise a catcher 33, expandable to retrieve downhole objects, and a displaceable sleeve 7 to keep the catcher in a retracted position.

Downhole tools having controlled disintegration

A multilayered unit includes a core comprising an energetic material and an activator; a support layer disposed on the core; and a protective layer disposed on the support layer, wherein the support layer and the protective layer each independently comprises a polymeric material, a metallic material, or a combination comprising at least one of the foregoing, provided that the support layer is compositionally different from the protective layer. The multilayered unit can be embedded in a component, attached to a component, or disposed between two components of a downhole assembly. The downhole assembly containing the multilayered unit has controlled disintegration in a downhole environment.

WELLBORE PLUG ISOLATION SYSTEM AND METHOD

A wellbore plug isolation system and method for positioning plugs to isolate fracture zones in a horizontal, vertical, or deviated wellbore is disclosed. The system/method includes a wellbore casing laterally drilled into a hydrocarbon formation, a wellbore setting tool (WST) that sets a large inner diameter (ID) restriction sleeve member (RSM), and a restriction plug element (RPE). The WST is positioned along with the RSM at a desired wellbore location. After the WST sets and seals the RSM, a conforming seating surface (CSS) is formed in the RSM. The CSS is shaped to engage/receive RPE deployed into the wellbore casing. The engaged/seated RPE isolates heel ward and toe ward fluid communication of the RSM to create a fracture zone. The RPE's are removed or left behind prior to initiating well production without the need for a milling procedure. A large ID RSM diminishes flow constriction during oil production.

CONSUMABLE DOWNHOLE TOOLS

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is convened to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non- explosive solid, such as thermite.

METHOD AND APPARATUS FOR CLEARING A WELL BORE

Methods and apparatuses are provided for clearing a wellbore using a means for milling and a means for suctioning within a wellbore. Obstructions such as ball frac seats, bridge plugs, or formation material can be milled within a wellbore. As a result, larger, unrestricted, diameters can be obtained within the liner/wellbore. The cleared wellbore can allow for various remedial tools to be run into the liner/wellbore. In addition, the milled particles can be suctioned/vacuumed up and can be pumped / pushed to surface in an underbalanced fashion. In some embodiments, this can be achieved by incorporating a bottom-hole pump or a venturi component into the bottomhole assembly. The system can be deployed using a spoolable single or multi-conduit coiled tubing system and can be configured as a well intervention or work-over technology. In some embodiments, the clearing equipment can be temporary or mobile.

STABILIZER OF DRILL ROD AND ITS PROCESS Of USE

One Trip Packer Plug Debris Milling and Removal Method

A combination tool is delivered to compacted debris above a packer whose plug is to be removed. The shoe or mill is on the lower end of an outer bushing and the grapple or overshot is held within the bushing but away from the shoe so that the shoe can advance into the debris as reverse circulation takes the cuttings up through a mandrel to a debris removal tool. When the shoe lands on the packer the surface personnel can see it on the weight indicator. Weight is then set down to overcome a resisting force of a breakable member such as a shear pin or a spring or both so that the grapple advances to engage the packer plug. Advancing the mandrel relative to the bushing with the shoe at its lower end also releases a torque lug that previously allowed tandem rotation of the mandrel with the bushing.

One-trip cut-to-release apparatus

Downhole tools having controlled degradation and method

A downhole assembly includes a matrix material and a unit in contact with the matrix material. The unit includes a core having an energetic material, an activator disposed in direct contact with the core, and at least one layer disposed on the core. The activator includes a triggering system having an igniter and a pre-set timer connected in an electrical circuit. The igniter is inactive in an open condition of the electrical circuit, and, after a preset time period, the pre-set timer closes the electrical circuit and the igniter is activated.

Penetrating tool

DUAL SENSOR FREEPOINT TOOL

An apparatus and method of determining the point at which a tubular is stuck within another tubular or a wellbore by applying a tensile or torsional force to the stuck tubular and measuring the response of various locations within the tubular. The apparatus comprises two anchoring mechanismus (375, 325) for connecting it to the tubular, a sensor for detecting linear displacement within the tubular, a sensor for detecting angular displacement within the tubular. The apparatus may be combined with a cutting tool to separate the free portion of the tubular from the stuck portion.

OILFIELD PERFORATOR DESIGNED FOR HIGH VOLUME CASING REMOVAL

A perforating tool (40) includes a charge holder (60) connected to a work string (112) and a perforator (10) fixed in a charge holder disposed along the work string. The perforator includes a cylindrical case (12), an explosive material, a metal cap (14), and a detonating cord (46). The case has a bulkhead (50) at a first end, an open mouth at a second end, and an interior volume. The first end includes a post (54) having a slot (56). The explosive material is disposed in the interior volume. The metal cap (14) covers the open mouth of the case and has a disk section (20) defined by a separator ring (22). The separator ring has a structurally weakened zone (24) that encircles the disk section. The detonating cord is received in the slot of the post.

FLUID ACTIVATED DISINTEGRATING METAL SYSTEM

An engineered composite system designed to be passive or inert under one set of conditions, but becomes active when exposed to a second set of conditions. This system can include a dissolving or disintegrating core, and a surface coating that has higher strength or which only dissolves under certain temperature and pH conditions, or in selected fluids. These reactive materials are useful for oil and gas completions and well stimulation processes, enhanced oil and gas recovery operations, as well as in defensive and mining applications requiring high energy density and good mechanical properties, but which can be stored and used for long periods of time without degradation.

Means to remove from a major drilling a wick or another broken or differently separate punching body of its stem

Methods of using a degradable component in a wellbore and related systems and methods of forming such components

Methods of using a component in a subterranean wellbore include positioning a component including a degradable thermoset polymer material in a wellbore location, obstructing flow with the component, exposing the component to an acidic solution to degrade the selectively degradable thermoset polymer material and to remove the component from the wellbore location, and flowing a fluid through the wellbore location where the component was positioned. Methods of forming a component of a wellbore system include forming at least a portion of the component to comprise a degradable thermoset polymer material. Wellbore systems include at least one component including a selectively degradable thermoset polymer material. The selectively degradable thermoset polymer material may be a polyhexahydrotriazine (“PHT”) material.

Downhole apparatus

Controlled electrolytic degradation of downhole tools

A downhole assembly with controlled degradation including a body having a cavity therein and is formed from a first material having a first electrode potential. An insert is disposed in the cavity, the insert electrically coupled to the body and formed from a second material having a second electrode potential, with the first electrode potential being more negative than the second electrode potential.

DOWNHOLE TOOLS HAVING CONTROLLED DEGRADATION AND METHOD

A downhole assembly includes a matrix material and a unit in contact with the matrix material. The unit includes a core having an energetic material, an activator disposed in direct contact with the core, and at least one layer disposed on the core. The activator includes a triggering system having an igniter and a pre-set timer connected in an electrical circuit. The igniter is inactive in an open condition of the electrical circuit, and, after a preset time period, the pre-set timer closes the electrical circuit and the igniter is activated.

METHOD AND APPARATUS FOR CLEARING A WELL BORE

Methods and apparatuses are provided for clearing a wellbore using a means for milling and a means for suctioning within a wellbore. Obstructions such as ball frac seats, bridge plugs, or formation material can be milled within a wellbore. As a result, larger, unrestricted, diameters can be obtained within the liner/wellbore. The cleared wellbore can allow for various remedial tools to be run into the liner/wellbore. In addition, the milled particles can be suctioned/vacuumed up and can be pumped / pushed to surface in an underbalanced fashion. In some embodiments, this can be achieved by incorporating a bottom-hole pump or a venturi component into the bottomhole assembly. The system can be deployed using a spoolable single or multi-conduit coiled tubing system and can be configured as a well intervention or work-over technology. In some embodiments, the clearing equipment can be temporary or mobile.

METHOD AND APPARATUS FOR CLEARING A WELL BORE

Methods and apparatuses are provided for clearing a wellbore using a means for milling and a means for suctioning within a wellbore. Obstructions such as ball frac seats, bridge plugs, or formation material can be milled within a wellbore. As a result, larger, unrestricted, diameters can be obtained within the liner/wellbore. The cleared wellbore can allow for various remedial tools to be run into the liner/wellbore. In addition, the milled particles can be suctioned/vacuumed up and can be pumped / pushed to surface in an underbalanced fashion. In some embodiments, this can be achieved by incorporating a bottom-hole pump or a venturi component into the bottomhole assembly. The system can be deployed using a spoolable single or multi-conduit coiled tubing system and can be configured as a well intervention or work-over technology. In some embodiments, the clearing equipment can be temporary or mobile.

DUAL SENSOR FREEPOINT TOOL

An apparatus and method of determining the point at which a tubular is stuck within another tubular or a wellbore by applying a tensile or torsional force to the stuck tubular and measuring the response of various locations within the tubular. The apparatus comprises two anchoring mechanismus (375, 325) for connecting it to the tubular, a sensor for detecting linear displacement within the tubular, a sensor for detecting angular displacement within the tubular. The apparatus may be combined with a cutting tool to separate the free portion of the tubular from the stuck portion.

TOOL AND METHOD OF OPERATION FOR REMOVING DEBRIS AND/OR A LODGED TOOL FROM A WELLBORE

A tool and method of operation for removing debris and/or a lodged tool from a wellbore as described herein. 1. A tool and method of operation for removing debris and/or a lodged tool from a wellbore as described herein. This application claims benefit to U.S. Provisional Patent Application Ser. No. 62/118,602, filed Feb. 20, 2015, which is herein incorporated by reference.1. Field of DisclosureEmbodiments of this disclosure generally relate to a tool and method of operation for removing debris and/or a lodged tool from a wellbore.2. Description of the Related ArtThere are a variety of tools used to facilitate the drilling, completion, and production of a wellbore. One such tool is a packer or a plug, which can be used to seal a portion of the wellbore as needed. It is often desired to retrieve these tools from the wellbore after use, which requires a “fishing” operation. A “fishing” operation utilizes a fishing tool that is lowered into the wellbore to engage and retrieve the tool. However, often times there is a significant amount of debris, including dirt, rock fragments, and other materials located on top of the tool, which lodge the tool within the wellbore and obstruct the fishing tool from engagement with a “fish” (or retrieval) portion of the tool. A separate wellbore operation may be required to remove the debris prior to conducting the “fishing” operation, which adds time and cost to the overall retrieval process.Therefore, there is a need for a tool and method of operation for removing debris and/or a lodged tool from a wellbore in a single trip.A tool and method of operation for removing debris and/or a lodged tool from a wellbore as described herein.illustrates a tool for removing debris and/or a lodged tool from a wellbore in a first position, according to one embodiment disclosed herein. The tool can be lowered into the wellbore on a work string . Optionally, fluid can be pumped down through the work string and the tool , and circulated back up to the ...

One-trip cut-to-release apparatus

Penetrating tool

Fishing tool

DOWNHOLE TOOLS HAVING CONTROLLED DEGRADATION AND METHOD

A downhole assembly includes a matrix material and a unit in contact with the matrix material. The unit includes a core having an energetic material, an activator disposed in direct contact with the core, and at least one layer disposed on the core. The activator includes a triggering system having an igniter and a pre-set timer connected in an electrical circuit. The igniter is inactive in an open condition of the electrical circuit, and, after a preset time period, the pre-set timer closes the electrical circuit and the igniter is activated.

STABILIZER OF DRILL ROD AND ITS PROCESS Of USE

METHOD AND APPARATUS FOR CLEARING A WELL BORE

Methods and apparatuses are provided for clearing a wellbore using a means for milling and a means for suctioning within a wellbore. Obstructions such as ball frac seats, bridge plugs, or formation material can be milled within a wellbore. As a result, larger, unrestricted, diameters can be obtained within the liner/wellbore. The cleared wellbore can allow for various remedial tools to be run into the liner/wellbore. In addition, the milled particles can be suctioned/vacuumed up and can be pumped/pushed to surface in an underbalanced fashion. In some embodiments, this can be achieved by incorporating a bottom-hole pump or a venturi component into the bottomhole assembly. The system can be deployed using a spoolable single or multi-conduit coiled tubing system and can be configured as a well intervention or work-over technology. In some embodiments, the clearing equipment can be temporary or mobile. 1. An apparatus for clearing a material from within a wellbore , comprising:a means for milling the material within the wellbore; anda means for suctioning the milled material out from the wellbore, the means for suctioning operatively attached to the means for milling;wherein the material can be cleared from within the wellbore.2. The apparatus of claim 1 , wherein the means for milling comprises a mill or a bit.3. The apparatus of claim 1 , wherein the means for suctioning comprises a venturi component or a pump.4. The apparatus of claim 1 , wherein the means for suctioning comprises an intake to bring the material into the apparatus.5. The apparatus of claim 1 , wherein the means for suctioning and the means for milling are in-line with each other.6. The apparatus of claim 1 , wherein the means for suctioning and the means for milling are coupled together as a bottomhole assembly.7. The apparatus of claim 1 , further comprising a connector for fluidly connecting the apparatus to coiled tubing.8. The apparatus of claim 7 , wherein the connector comprises at least one ...

Fishing tool

Penetrating tool

Downhole tools having controlled disintegration

A multilayered unit includes a core comprising an energetic material and an activator; a support layer disposed on the core; and a protective layer disposed on the support layer, wherein the support layer and the protective layer each independently comprises a polymeric material, a metallic material, or a combination comprising at least one of the foregoing, provided that the support layer is compositionally different from the protective layer. The multilayered unit can be embedded in a component, attached to a component, or disposed between two components of a downhole assembly. The downhole assembly containing the multilayered unit has controlled disintegration in a downhole environment.

RESCUE DART FOR PRE-SET FRAC PLUG AND RELATED METHODS

A rescue dart for deployment down a wellbore to dislodge a pre-set frac plug having a plug mandrel from within the wellbore is provided. The rescue dart includes a dart body adapted to be conveyed down the wellbore via fluid flow and a mandrel defeater connected to the dart body and operable to reduce structural integrity of a portion of the plug mandrel until structural failure of the plug mandrel occurs and the frac plug is unset and dislodged. A corresponding system is also provided. The system includes the rescue dart and a pump for pumping fluids down the wellbore. A method of dislodging a pre-set frac plug using the rescue dart is also provided.

A CENTRALIZING AND PROTECTIVE ADAPTER FOR DOWNHOLE TORCH AND METHOD OF USE

Apparatus and adapter are usable for aligning downhole torch apparatuses and cutting devices, including axial pyro torches, circulating pyro torches, and radial cutting and perforating torches, within a wellbore for removal of one or more downhole obstructions. The torch and/or cutting apparatus comprises a body having a nozzle adapted to project a fuel load, such as molten thermite or molten thermite with a polymer, in a direction aligned with the obstruction. The adapter comprises protruding elements for eliminating or diminishing damage to the area surrounding the obstruction, including the inner walls of the wellbore and/or casing, and can further comprise centralizers for alignment of the apparatus with the obstruction, within the wellbore.

Wellbore plug isolation system and method

A wellbore plug isolation system and method for positioning plugs to isolate fracture zones in a horizontal, vertical, or deviated wellbore is disclosed. The system/method includes a wellbore casing laterally drilled into a hydrocarbon formation, a wellbore setting tool (WST) that sets a large inner diameter (ID) restriction sleeve member (RSM), and a restriction plug element (RPE). The WST is positioned along with the RSM at a desired wellbore location. After the WST sets and seals the RSM, a conforming seating surface (CSS) is formed in the RSM. The CSS is shaped to engage/receive RPE deployed into the wellbore casing. The engaged/seated RPE isolates heel ward and toe ward fluid communication of the RSM to create a fracture zone. The RPE's are removed or left behind prior to initiating well production without the need for a milling procedure. A large ID RSM diminishes flow constriction during oil production.

Downhole tools having controlled degradation and method

Cutting and removing a downhole anchor in a single trip

Apparatus and method to allow a downhole anchor device, such as a packer, to be cut, released and retrieved using a single one trip cutter and removal assembly. The assembly comprising a cutter head 122 recessed behind an engagement adaptor 110, such as an anchor latch, the cutter may be explosive, chemical or hydraulic. The engagement adaptor 110 is landed to the anchor device to be removed and the cutter head 122 is extended therefrom and activated. Once cut by the cutter head 122, the anchor device is retrieved upon a distal end of the assembly.

Downhole tools having controlled degradation and method

A downhole assembly includes a matrix material and a unit in contact with the matrix material. The unit includes a core having an energetic material, an activator disposed in direct contact with the core, and at least one layer disposed on the core. The activator includes a triggering system having an igniter and a pre-set timer connected in an electrical circuit. The igniter is inactive in an open condition of the electrical circuit, and, after a preset time period, the pre-set timer closes the electrical circuit and the igniter is activated.

CONTROLLED ELECTROLYTIC DEGRADATION OF DOWNHOLE TOOLS

A downhole assembly with controlled degradation including a body having a cavity therein and is formed from a first material having a first electrode potential. An insert is disposed in the cavity, the insert electrically coupled to the body and formed from a second material having a second electrode potential, with the first electrode potential being more negative than the second electrode potential.

Downhole impact apparatus

Downhole tools having controlled disintegration

A multilayered unit includes a core comprising an energetic material and an activator; a support layer disposed on the core; and a protective layer disposed on the support layer, wherein the support layer and the protective layer each independently comprises a polymeric material, a metallic material, or a combination comprising at least one of the foregoing, provided that the support layer is compositionally different from the protective layer. The multilayered unit can be embedded in a component, attached to a component, or disposed between two components of a downhole assembly. The downhole assembly containing the multilayered unit has controlled disintegration in a downhole environment.

CONSUMABLE DOWNHOLE TOOLS

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is convened to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non- explosive solid, such as thermite.

WELLBORE PLUG ISOLATION SYSTEM AND METHOD

A wellbore plug isolation system and method for positioning plugs to isolate fracture zones in a horizontal, vertical, or deviated wellbore is disclosed. The system/method includes a wellbore casing laterally drilled into a hydrocarbon formation, a wellbore setting tool (WST) that sets a large inner diameter (ID) restriction sleeve member (RSM), and a restriction plug element (RPE). The WST is positioned along with the RSM at a desired wellbore location. After the WST sets and seals the RSM, a conforming seating surface (CSS) is formed in the RSM. The CSS is shaped to engage/receive RPE deployed into the wellbore casing. The engaged/seated RPE isolates heel ward and toe ward fluid communication of the RSM to create a fracture zone. The RPE's are removed or left behind prior to initiating well production without the need for a milling procedure. A large ID RSM diminishes flow constriction during oil production.

Fluid Activated Disintegratiing Metal System

An engineered composite system designed to be passive or inert under one set of conditions, but becomes active when exposed to a second set of conditions. This system can include a dissolving or disintegrating core, and a surface coating that has higher strength or which only dissolves under certain temperature and pH conditions, or in selected fluids. These reactive materials are useful for oil and gas completions and well stimulation processes, enhanced oil and gas recovery operations, as well as in defensive and mining applications requiring high energy density and good mechanical properties, but which can be stored and used for long periods of time without degradation.

DUAL SENSOR FREEPOINT TOOL

An apparatus and method of determining the point at which a tubular is stuck within another tubular or a wellbore by applying a tensile or torsional force to the stuck tubular and measuring the response of various locations within the tubular. The apparatus comprises two anchoring mechanismus (375, 325) for connecting it to the tubular, a sensor for detecting linear displacement within the tubular, a sensor for detecting angular displacement within the tubular. The apparatus may be combined with a cutting tool to separate the free portion of the tubular from the stuck portion.

DOWNHOLE TOOLS HAVING CONTROLLED DEGRADATION AND METHOD

A downhole assembly includes a downhole tool including a degradable-on-demand material including: a matrix material; and, a unit in contact with the matrix material. The unit includes a core including an energetic material configured to generate energy upon activation to facilitate degradation of the downhole tool; and, an activator disposed in contact with the core, the activator including a triggering system having an electrical circuit and an igniter within the electrical circuit, the electrical circuit having an open condition and a closed condition, the electrical circuit configured to be in the closed condition after movement of an object downhole that engages directly or indirectly with the triggering system, and the igniter arranged to ignite the energetic material in the closed condition of the electrical circuit. In the open condition of the electrical circuit the igniter is inactive, and in the closed condition of the electrical circuit the igniter is activated.

CONTROLLED ELECTROLYTIC DEGRADATION OF DOWNHOLE TOOLS

A downhole assembly with controlled degradation including a body having a cavity therein and is formed from a first material having a first electrode potential. An insert is disposed in the cavity, the insert electrically coupled to the body and formed from a second material having a second electrode potential, with the first electrode potential being more negative than the second electrode potential.

Explosively cutting and removing a downhole anchor in a single trip

A cut and release tool for retrieving an engaged downhole anchor comprises a main body adapted to be connected to the lower end of a string of tubing disposed within a wellbore, an explosive cutter 122 recessed within said main body, and an engagement adapter 110 connected to said main body and configured to securely engage with a corresponding profile of the downhole anchor. The explosive cutter 122 is arranged to extend from its recessed position when said string of tubing is axially loaded and to cut and release the downhole anchor when detonated, The engagement adapter 110 is arranged to retain the downhole anchor and to retrieve it from said wellbore after said explosive cutter is detonated.

One-trip cut-to-release apparatus and method

DOWNHOLE TOOLS HAVING CONTROLLED DISINTEGRATION

A multilayered unit includes a core comprising an energetic material and an activator; a support layer disposed on the core; and a protective layer disposed on the support layer, wherein the support layer and the protective layer each independently comprises a polymeric material, a metallic material, or a combination comprising at least one of the foregoing, provided that the support layer is compositionally different from the protective layer. The multilayered unit can be embedded in a component, attached to a component, or disposed between two components of a downhole assembly. The downhole assembly containing the multilayered unit has controlled disintegration in a downhole environment.

OILFIELD PERFORATOR DESIGNED FOR HIGH VOLUME CASING REMOVAL

A perforating tool (40) includes a charge holder (60) connected to a work string (112) and a perforator (10) fixed in a charge holder disposed along the work string. The perforator includes a cylindrical case (12), an explosive material, a metal cap (14), and a detonating cord (46). The case has a bulkhead (50) at a first end, an open mouth at a second end, and an interior volume. The first end includes a post (54) having a slot (56). The explosive material is disposed in the interior volume. The metal cap (14) covers the open mouth of the case and has a disk section (20) defined by a separator ring (22). The separator ring has a structurally weakened zone (24) that encircles the disk section. The detonating cord is received in the slot of the post.

CONTROLLED ELECTROLYTIC DEGRADATION OF DOWNHOLE TOOLS

A downhole assembly with controlled degradation including a body having a cavity therein and is formed from a first material having a first electrode potential. An insert is disposed in the cavity, the insert electrically coupled to the body and formed from a second material having a second electrode potential, with the first electrode potential being more negative than the second electrode potential.

Penetrating tool

A penetrating tool for penetrating an obstruction across a conduit has a body 16 containing at least one explosive shaped charge 14, a lower barrier 30 and an engagement portion 32, 36 to set a stand-off distance. The penetrating tool further comprises a detonator 40. In use, the engagement portion is positioned against the obstruction or blockage, and the explosive charge is detonated to eject a shaped charge liner through the barrier and into the obstruction. The barrier may be resistant to the explosion so that only a portion of the barrier is destroyed - that portion which is pierced by the liner. The engagement portion may be in the form of a wall surrounding the barrier, and the shaped charge may be a conical shaped charge, or may be a plurality of linear shaped charges arranged to form a hexagon or pentagon.

DRILLING STABILIZER AND METHOD OF USE

... 1479255 Boring earth &c S L BASS 22 Aug 1975 [5 Nov 1974] 34880/75 Heading E1F A drill collar stabiliser e.g. 26A, 26B or 26C, Fig. 1B, comprises a rigid main sleeve 36, Fig. 5, having an axial passageway 41, 43 intermediate the length of which is a fixed abutment 44 extending inwardly from the passageway surround and defining an opening sufficient to permit the sleeve 36 to be slidably received over a drill collar 22. Flanges or blades 38 extend radially outwardly of the sleeve 36, and clamping means e.g. wedgeshaped split slip rings 46, 52, are positioned adjacent the abutment 44 and are engagable by clamping actuator means e.g. a threaded cap sleeve 58, for clamping the sleeve 36 to the collar 22. The abutment 44 may be an annular rib rather than a shoulder, a second set of slip rings and cap sleeve being provided in the lower half of the main sleeve for additional clamping. Each stabiliser may be formed with upwardly- and downwardlyfacing clutch jaws 66, 39 so that if, in use, the drill ...

Downhole impact apparatus

An apparatus and method for performing a downhole impact operation. The apparatus comprising: an impact tool (200) operable to be coupled between opposing first (206) and second (210) portions of a downhole tool string and conveyed within a wellbore, wherein the impact tool comprises: a housing (202); a chamber (214) within the housing (202); a piston (220) slidably disposed within the chamber (214) and dividing the chamber into a first chamber volume (222) and a second chamber volume (224), wherein the first chamber volume (222) is open to a space external to the housing (202), and wherein the second chamber volume (224) is fluidly isolated from the space external to the housing (202); and a shaft (240) connected with the piston (220) and axially movable with respect to the housing (202).

Drill pipe with dissolvable layer

Presented herein are apparatus and methods that alleviate incidence of stuck pipes in downhole environments. In some embodiments, the apparatus and methods described herein include a drill pipe for drilling operations including: a dissolvable layer deposited on a portion of an outer surface of the drill pipe; and a tunnel connected to the dissolvable layer.

Downhole tools having controlled degradation and method

Downhole tools having controlled degradation and method

A packer milling tool having a debris container

A tool for milling and retrieving a packer from the casing of a well bore includes an upper milling portion 14, a lower attachment portion 16 at least partially located within the upper milling portion 14 for engagement with a packer 50. A debris retainer 28 is also present for capturing milled cuttings within the tool. The debris is directed into the retainer 28 by the circulation of fluid.

Downhole tools having controlled degradation and method

A downhole assembly includes a downhole tool including a degradable-on-demand material including: a matrix material; and, a unit in contact with the matrix material. The unit includes a core including an energetic material configured to generate energy upon activation to facilitate degradation of the downhole tool; and, an activator disposed in contact with the core, the activator including a triggering system having an electrical circuit and an igniter within the electrical circuit, the electrical circuit having an open condition and a closed condition, the electrical circuit configured to be in the closed condition after movement of an object downhole that engages directly or indirectly with the triggering system, and the igniter arranged to ignite the energetic material in the closed condition of the electrical circuit. In the open condition of the electrical circuit the igniter is inactive, and in the closed condition of the electrical circuit the igniter is activated.

Downhole tools having controlled degradation and method

A downhole assembly includes a downhole tool including a degradable-on-demand material including: a matrix material; and, a unit in contact with the matrix material. The unit includes a core including an energetic material configured to generate energy upon activation to facilitate degradation of the downhole tool; and, an activator disposed in contact with the core, the activator including a triggering system having an electrical circuit and an igniter within the electrical circuit, the electrical circuit having an open condition and a closed condition, the electrical circuit configured to be in the closed condition after movement of an object downhole that engages directly or indirectly with the triggering system, and the igniter arranged to ignite the energetic material in the closed condition of the electrical circuit. In the open condition of the electrical circuit the igniter is inactive, and in the closed condition of the electrical circuit the igniter is activated.

Dual sensor freepoint tool

Casing spear

VORRICHTUNG ZUM STABILISIEREN EINES BOHRGESTAENGES, MIT DER VORRICHTUNG AUSGERUESTETES BOHRGESTAENGE SOWIE VERFAHREN ZUM STABILISIEREN EINES BOHRGESTAENGES UND ZUM FREISCHNEIDEN DES BOHRGESTAENGES NACH DEM STECKENBLEIBEN

One-trip cut-to-release apparatus and method

A packer retrieval tool

Downhole tools having controlled disintegration

BORRSTABILISATOR OCH SETT ATT ASTADKOMMA BORRSTABILISERING

Oilfield perforator designed for high volume casing removal

A perforating tool (40) includes a charge holder (60) connected to a work string (112) and a perforator (10) fixed in a charge holder disposed along the work string. The perforator includes a cylindrical case (12), an explosive material, a metal cap (14), and a detonating cord (46). The case has a bulkhead (50) at a first end, an open mouth at a second end, and an interior volume. The first end includes a post (54) having a slot (56). The explosive material is disposed in the interior volume. The metal cap (14) covers the open mouth of the case and has a disk section (20) defined by a separator ring (22). The separator ring has a structurally weakened zone (24) that encircles the disk section. The detonating cord is received in the slot of the post.

Controlled electrolytic degradation of downhole tools

A downhole assembly with controlled degradation including a body having a cavity therein and is formed from a first material having a first electrode potential. An insert is disposed in the cavity, the insert electrically coupled to the body and formed from a second material having a second electrode potential, with the first electrode potential being more negative than the second electrode potential.

CONSUMABLE DOWNHOLE TOOL

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned, The fuel load may comprise a flammable, non-explosive solid, such as thermite.

Dual sensor freepoint tool

An apparatus and method of determining the point at which a tubular is stuck within another tubular or a wellbore by applying a tensile or torsional force to the stuck tubular and measuring the response of various locations within the tubular. In addition, the apparatus may be combined with a cutting tool to separate the free portion of the tubular from the stuck portion.

OILFIELD PERFORATOR DESIGNED FOR HIGH VOLUME CASING REMOVAL

A perforating tool includes a charge holder connected to a work string and a perforator fixed in a charge holder disposed along the work string. The perforator includes a cylindrical case, an explosive material, a metal cap, and a detonating cord. The case has a bulkhead at a first end, an open mouth at a second end, and an interior volume. The first end includes a post having a slot. The explosive material is disposed in the interior volume. The metal cap covers the open mouth of the case and has a disk section defined by a separator ring. The separator ring has a structurally weakened zone that encircles the disk section. The detonating cord is received in the slot of the post. 1. A perforating tool for perforating a wellbore tubular in a wellbore , comprising:a work string;a charge holder connected to the work string; a cylindrical case having a bulkhead at a first end, an open mouth at a second end, and an interior volume, wherein the first end includes a post projecting therefrom, the post having a slot,', 'an explosive material disposed in the interior volume, and', 'a metal cap covering the open mouth of the case, the cap having a disk section defined by a separator ring, the separator ring having a structurally weakened zone that encircles the disk section; and, 'a perforator fixed in the charge holder, the perforator havinga detonating cord received in the slot of the post.2. The perforating tool of claim 1 , wherein the bulkhead is unperforated and a fluid tight seal is formed between the cap and the case to hydraulically isolate the interior volume of the case claim 1 , and wherein the charge holder is a frame exposing the perforator and the detonating cord to a wellbore liquid.3. The perforating tool of claim 1 , further comprising a positioning tool disposed on the work string claim 1 , the positioning tool having an extensible member configured to contact an adjacent wall and bias the perforator against a surface of the wellbore tubular.5. The ...

APPARATUS AND METHODS FOR OVERCOMING AN OBSTRUCTION IN A WELLBORE

Apparatus and methods for penetrating a downhole target within a wellbore include providing a body with a longitudinal axis, a first end, and a second end into a wellbore, the body having a nozzle at the first end. The nozzle is adapted to project a medium in a direction generally parallel to the longitudinal axis to affect a downhole target. An actuator in communication with the medium is usable to initiate the apparatus. The nozzle can be provided with a geometry configured for projecting the medium in a pattern that separates the downhole target into at least two portions. The medium can include a ferromagnetic material that becomes associated with the downhole target to facilitate recovery of the target or portions thereof using a retrieval device having a magnetic element. 1. An apparatus for penetrating a downhole target within a wellbore having an axis , wherein the apparatus comprises:a body having a longitudinal axis, a first end, and a second end;a medium associated with the body;a nozzle at the first end of the body, wherein the nozzle projects the medium in a direction generally parallel to the longitudinal axis, and wherein the nozzle comprises a geometry configured for projecting the medium in a pattern adapted to separate the downhole target into at least two portions; andan actuator in communication with the medium, wherein actuation of the actuator causes projection of the medium through the nozzle in the pattern, in the direction generally parallel to the longitudinal axis of the body and generally parallel to the axis of the wellbore for affecting the downhole target.2. The apparatus of claim 1 , further comprising a stand-off member associated with the first end of the body claim 1 , wherein the stand-off member has a dimension that provides a space between the nozzle and the downhole target.3. The apparatus of claim 2 , wherein the stand-off member is adapted to be at least partially eroded by the medium.4. The apparatus of claim 1 , further ...

CONSUMABLE DOWNHOLE TOOLS

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is convened to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non- explosive solid, such as thermite.

DOWNHOLE LASER TOOL AND METHODS

Downhole tools having controlled degradation and method

A downhole assembly includes a matrix material and a unit in contact with the matrix material. The unit includes a core having an energetic material, an activator disposed in direct contact with the core, and at least one layer disposed on the core. The activator includes a triggering system having an igniter and a pre-set timer connected in an electrical circuit. The igniter is inactive in an open condition of the electrical circuit, and, after a preset time period, the pre-set timer closes the electrical circuit and the igniter is activated.

degradação eletrolítica controlada de ferramentas de fundo de poço

DOWNHOLE TOOLS HAVING CONTROLLED DISINTEGRATION

A multilayered unit includes a core comprising an energetic material and an activator; a support layer disposed on the core; and a protective layer disposed on the support layer, wherein the support layer and the protective layer each independently comprises a polymeric material, a metallic material, or a combination comprising at least one of the foregoing, provided that the support layer is compositionally different from the protective layer. The multilayered unit can be embedded in a component, attached to a component, or disposed between two components of a downhole assembly. The downhole assembly containing the multilayered unit has controlled disintegration in a downhole environment.

Oilfield perforator designed for high volume casing removal

A perforating tool (40) includes a charge holder (60) connected to a work string (112) and a perforator (10) fixed in a charge holder disposed along the work string. The perforator includes a cylindrical case (12), an explosive material, a metal cap (14), and a detonating cord (46). The case has a bulkhead (50) at a first end, an open mouth at a second end, and an interior volume. The first end includes a post (54) having a slot (56). The explosive material is disposed in the interior volume. The metal cap (14) covers the open mouth of the case and has a disk section (20) defined by a separator ring (22). The separator ring has a structurally weakened zone (24) that encircles the disk section. The detonating cord is received in the slot of the post.

Automatic driller

An automatic drilling apparatus having a tool body, a motive device connected to the tool body, and a drill bit connected to the tool body. The apparatus also includes a setting tool connected to the body, at least one sensor disposed on the tool body, and a computer disposed in the tool body, wherein the computer is configured to actuate the motive device, the drill bit, the setting tool, and the at least one sensor.

Fluid activated disintegrating metal system

An engineered composite system designed to be passive or inert under one set of conditions, but becomes active when exposed to a second set of conditions. This system can include a dissolving or disintegrating core, and a surface coating that has higher strength or which only dissolves under certain temperature and pH conditions, or in selected fluids. These reactive materials are useful for oil and gas completions and well stimulation processes, enhanced oil and gas recovery operations, as well as in defensive and mining applications requiring high energy density and good mechanical properties, but which can be stored and used for long periods of time without degradation.

Device capable of realizing block removing and production increasing via coiled tubing and abrasive grain jet

Wellbore plug isolation system and method

A wellbore plug isolation system and method for positioning plugs to isolate fracture zones in a horizontal, vertical, or deviated wellbore is disclosed. The system/method includes a wellbore casing laterally drilled into a hydrocarbon formation, a wellbore setting tool (WST) that sets a large inner diameter (ID) restriction sleeve member (RSM), and a restriction plug element (RPE). The WST is positioned along with the RSM at a desired wellbore location. After the WST sets and seals the RSM, a conforming seating surface (CSS) is formed in the RSM. The CSS is shaped to engage/receive RPE deployed into the wellbore casing. The engaged/seated RPE isolates heel ward and toe ward fluid communication of the RSM to create a fracture zone. The RPE's are removed or left behind prior to initiating well production without the need for a milling procedure. A large ID RSM diminishes flow constriction during oil production.

STABILISATOR FUER SCHWERSTANGEN, TIEFBOHRVORRICHTUNGEN MIT STABILISATOREN UND VERFAHREN ZUM FREISCHNEIDEN EINES MIT STABILISATOREN AUSGERUESTETEN TIEFBOHRGESTAENGES

TOOL FOR USE IN REMOVING A FISH STUCK WITHIN A WELL BORE

Wellbore plug isolation system and method

A wellbore plug isolation system and method for positioning plugs to isolate fracture zones in a horizontal, vertical, or deviated wellbore is disclosed. The system/method includes a wellbore casing laterally drilled into a hydrocarbon formation, a wellbore setting tool (WST) that sets a large inner diameter (ID) restriction sleeve member (RSM), and a restriction plug element (RPE). The WST is positioned along with the RSM at a desired wellbore location. After the WST sets and seals the RSM, a conforming seating surface (CSS) is formed in the RSM. The CSS is shaped to engage/receive RPE deployed into the wellbore casing. The engaged/seated RPE isolates heel ward and toe ward fluid communication of the RSM to create a fracture zone. The RPE's are removed or left behind prior to initiating well production without the need for a milling procedure. A large ID RSM diminishes flow constriction during oil production.

Downhole Severing Tools Employing A Two-Stage Energizing Material And Methods For Use Thereof

It is sometimes necessary to sever a downhole tubular structure in the course of conducting subterranean operations. Detonation of an explosive material may be used to sever a tubular structure in some instances. Downhole severing tools may comprise: a housing; a two-stage energizing material within the housing, the two-stage energizing material comprising a high explosive and a reactive energizing material; at least one initiator coupled to the two-stage energizing material at least at a first location; and a detonator coupled to the at least one initiator; wherein upon detonation of the two-stage energizing material, the high explosive undergoes a primary reaction that propagates a secondary reaction of the reactive energizing material. 1. A downhole severing tool comprising:a housing;a two-stage energizing material within the housing, the two-stage energizing material comprising a high explosive and a reactive energizing material;at least one initiator coupled to the two-stage energizing material at least at a first location; and 'wherein upon detonation of the two-stage energizing material, the high explosive undergoes a primary reaction that propagates a secondary reaction of the reactive energizing material.', 'a detonator coupled to the at least one initiator;'}2. The downhole severing tool of claim 1 , wherein the two-stage energizing material comprises a shaped charge having a concave region on its exterior claim 1 , the exterior of the concave region being defined by a liner claim 1 , behind which is housed the two-stage energizing material.3. The downhole severing tool of claim 2 , wherein the at least one initiator passes longitudinally through the shaped charge.4. The downhole severing tool of claim 1 , wherein the two-stage energizing material comprises a reactive disk claim 1 , one or more reactive disks being stacked above and below a shaped charge in the housing.5. The downhole severing tool of claim 4 , wherein the shaped charge also comprises a ...

PERFORATION RING STABILIZER AND PROCESS TO PROVIDE AN EXCELLENT STABILIZATION

STABILIZING DOWNHOLE TOOL

Embodiments disclosed herein relate to a downhole tool and a method to abate vibration with the downhole tool. The downhole tool may include a first stabilizing member, a second stabilizing member, a flexible member, and/or a dampening member, in which the downhole tool may be disposed downhole within a wellbore. The flexible member may enable the first stabilizing member and the second stabilizing member to articulate with respect to an axis of the downhole tool. The dampening member may enable vibration received by the downhole tool to be dampened. Further, the first stabilizing member and the second stabilizing member may be rotatable with respect to each other about the axis of the downhole tool.

DOWNHOLE TOOL WITH A PROPELLANT CHARGE

A method of initiating a change in a target (14), includes providing at least one propellant source (12), igniting at least one of the propellant source(s) to form a combustion zone (20), and directing at least one combustion products jet (228) generated at the combustion zone (20) along at least one flow path (30). Upon exiting the flow path(s) the/each combustion products jet interacts with a target (14), to cause a change in the target. The method further comprises the step of providing at least one additive, the additive being provided in the at least one propellant source (12) or introduced to the at least one combustion products jet (228). The additive or additives adhere to the target (14). A tool (10) for carrying out the method is also provided.

Consumable downhole tool

A torch apparatus for consuming a material having a fuel load that produces heat and a source of oxygen when burned, and a plurality of slots having interstitial spaces therebetween for allowing longitudinal flow of fluid along the torch apparatus without interfering with the flow of fluid through the slots. The slots are oriented such that the heat and source of oxygen are provided to a material that is at least partially consumed when exposed to heat and oxygen, to thereby cause destruction of an object containing the material or disengagement of the object such that it falls into the wellbore.

Controlled electrolytic degredation of downhole tools

A downhole assembly with controlled degradation including a body having a cavity therein and is formed from a first material having a first electrode potential. An insert is disposed in the cavity, the insert electrically coupled to the body and formed from a second material having a second electrode potential, with the first electrode potential being more negative than the second electrode potential.

FLEXIBLE DISPLAY APPARATUS AND AN ENCAPSULATION METHOD THEREOF

The disclosure describes a flexible display apparatus and an encapsulation method thereof, which are capable of solving the problem of easily producing cracks with the existing encapsulating film layer and improving the performance of flex resistance of the flexible display apparatus. The flexible display apparatus according to the disclosure includes: an LED device, and a protective layer arranged on a cathode of the OLED device, wherein the protective layer includes a water oxygen barrier region and a multi-functional region, the multi-functional region has dual functions of a water oxygen barrier and stress blocking, and the thickness of the film layer in the multi-functional region is less than that of the film layer in the water oxygen barrier region, and/or the film texture in the multi-functional region is looser than that in the water oxygen barrier region. 1. A flexible display apparatus comprising: an OLED device , and a protective layer overlying a cathode of the OLED device , wherein the protective layer comprises a water oxygen barrier region and a multi-functional region , the multi-functional region has dual functions of a water oxygen barrier and stress blocking , wherein a film texture of the protective layer in the multi-functional region is looser than that of the protective layer in the water oxygen barrier region , and wherein a location of the multi-functional region corresponds to a spaced area between adjacent pixels , and a location of the water oxygen barrier region corresponds to a pixel area.2. The flexible display apparatus as claimed in claim 1 , wherein the protective layer comprises: a first film layer with a relatively dense film texture claim 1 , only distributed in the water oxygen barrier region; and a second film layer with a relatively loose film texture claim 1 , only distributed in the multi-functional region.3. The flexible display apparatus as claimed in claim 2 , wherein the first film layer is of a silicon-nitrogen-based ...

AUTOMATIC PACKER

A downhole apparatus including a tool body and a sealing element disposed within the tool body. Also, at least one sensor disposed on the tool body, wherein the sensor is configured to take measurements from a well and wherein the sensor measures an actuation condition, the sensor signals the sealing element to actuate. Also, a method of sealing a portion of a well including disposing an automatic packer in a well, wherein the automatic packer includes a tool body, a sealing element disposed within the tool body, and a sensor disposed on the tool body. The method also includes measuring a condition within the well, determining an actuation condition with the sensor, and expanding the sealing element into contact with an inner diameter of the well when the actuation condition is determined. 1. A downhole apparatus comprising:a tool body;a sealing element disposed within the tool body; andat least one sensor disposed on the tool body, wherein the sensor is configured to take measurements from a well, andwherein when the sensor measures an actuation condition, the sensor signals the sealing element to actuate.2. The downhole apparatus of claim 1 , further comprising a power source connected to the at least one sensor.3. The downhole apparatus of claim 1 , wherein the sensor is configured to measure at least one of a temperature claim 1 , a pressure claim 1 , a fluid type claim 1 , a load claim 1 , a density claim 1 , a specific gravity claim 1 , an induction claim 1 , a conduction claim 1 , a refraction claim 1 , an infrared signal claim 1 , a fiber optic signal claim 1 , an acceleration claim 1 , a velocity claim 1 , a wireless transmission claim 1 , a gyroscopic measurement claim 1 , an ultrasonic signal claim 1 , a tachometer measurement claim 1 , a casing collar locator claim 1 , a modular reservoir dynamic test claim 1 , and a position.4. The downhole apparatus of claim 1 , further comprising at least one data controller connected to the sensor.5. The downhole ...

AUTOMATIC DRILLER

An automatic drilling apparatus having a tool body, a motive device connected to the tool body, and a drill bit connected to the tool body. The apparatus also includes a setting tool connected to the body, at least one sensor disposed on the tool body, and a computer disposed in the tool body, wherein the computer is configured to actuate the motive device, the drill bit, the setting tool, and the at least one sensor. 1. An automatic drilling apparatus comprising:a tool body;a motive device connected to the tool body;a drill bit connected to the tool body;a setting tool connected to the tool body;at least one sensor disposed on the tool body; anda computer disposed in the tool body, wherein the computer is configured to actuate the motive device, the drill bit, the setting tool, and the at least one sensor.2. The automatic drilling apparatus of claim 1 , further comprising a power source disposed in the tool body and connected to the computer.3. The automatic drilling apparatus of claim 1 , wherein the sensor is configured to measure at least one of a temperature claim 1 , a pressure claim 1 , a fluid type claim 1 , a load claim 1 , a density claim 1 , a specific gravity claim 1 , an induction claim 1 , a conduction claim 1 , a refraction claim 1 , an infrared signal claim 1 , a fiber optic signal claim 1 , an acceleration claim 1 , a velocity claim 1 , a wireless transmission claim 1 , a gyroscopic measurement claim 1 , an ultrasonic signal claim 1 , a tachometer measurement claim 1 , a casing collar locator claim 1 , a logging tool claim 1 , a imaging tool claim 1 , a modular formation dynamic testing tool claim 1 , a modular reservoir dynamic test claim 1 , and a position.4. The automatic drilling apparatus of claim 1 , further comprising a second drill bit disposed at an opposite end of the tool body from the drill bit.5. The automatic drilling apparatus of claim 1 , wherein the drill bit is collapsible.6. The automatic drilling apparatus of claim 1 , wherein ...

Method and apparatus for clearing a well bore

Methods and apparatuses are provided for clearing a wellbore using a component for milling and a component for suctioning within a wellbore. Obstructions such as ball frac seats, bridge plugs, or formation material can be milled within a wellbore. As a result, larger, unrestricted, diameters can be obtained within the liner/wellbore. The cleared wellbore can allow for various remedial tools to be run into the liner/wellbore. In addition, the milled particles can be suctioned/vacuumed up and can be pumped/pushed to surface in an underbalanced fashion. In some embodiments, this can be achieved by incorporating a bottom-hole pump or a venturi component into the bottomhole assembly. The system can be deployed using a spoolable single or multi-conduit coiled tubing system and can be configured as a well intervention or work-over technology. In some embodiments, the clearing equipment can be temporary or mobile.

Wellbore Plug Isolation System and Method

A wellbore plug isolation system and method for positioning plugs to isolate fracture zones in a horizontal, vertical, or deviated wellbore is disclosed. The system/method includes a wellbore casing laterally drilled into a hydrocarbon formation, a wellbore setting tool (WST) that sets a large inner diameter (ID) restriction sleeve member (RSM), and a restriction plug element (RPE). The WST is positioned along with the RSM at a desired wellbore location. After the WST sets and seals the RSM, a conforming seating surface (CSS) is formed in the RSM. The CSS is shaped to engage/receive RPE deployed into the wellbore casing. The engaged/seated RPE isolates heel ward and toe ward fluid communication of the RSM to create a fracture zone. The RPE's are removed or left behind prior to initiating well production without the need for a milling procedure. A large ID RSM diminishes flow constriction during oil production.

Wellbore Plug Isolation System and Method

A wellbore plug isolation system and method for positioning plugs to isolate fracture zones in a horizontal, vertical, or deviated wellbore is disclosed. The system/method includes a wellbore casing laterally drilled into a hydrocarbon formation, a wellbore setting tool (WST) that sets a large inner diameter (ID) restriction sleeve member (RSM), and a restriction plug element (RPE). The WST is positioned along with the RSM at a desired wellbore location. After the WST sets and seals the RSM, a conforming seating surface (CSS) is formed in the RSM. The CSS is shaped to engage/receive RPE deployed into the wellbore casing. The engaged/seated RPE isolates heel ward and toe ward fluid communication of the RSM to create a fracture zone. The RPE's are removed or left behind prior to initiating well production without the need for a milling procedure. A large ID RSM diminishes flow constriction during oil production. 1. A wellbore milling system comprising a plurality of restriction sleeve members (RSMs);whereinsaid plurality of restriction sleeve members are configured to fit within a wellbore casing;said plurality of restriction sleeve members are configured to be positioned at a desired wellbore location by a wellbore setting tool (WST);said plurality of restriction sleeve members are configured with protruding fingers on either end; andsaid plurality of restriction sleeve members are pushed to interlock to each other such that said plurality of restriction sleeve members are milled out in a single milling operation.2. The wellbore milling system of wherein said wellbore setting tool grips said plurality of restriction sleeve members to the inside of said casing with gripping elements selected from a group consisting of: elastomers claim 1 , carbide buttons claim 1 , and wicker forms.3. The wellbore milling system of wherein said plurality of restriction sleeve members are degradable.4. The wellbore milling system of wherein said plurality of restriction sleeve members ...

Apparatus and Methods for Clearing a Subsea Tubular

An embodiment of a tool for clearing a deposit within a fluid flowline, including a body having a central axis, a first end, a second end opposite the first end, and a radially outer surface extending axially from the first end of the second end. In addition, the tool includes a first energy element coupled to the first end, and an electrode extending radially from the radially outer surface of the body. The first energy element and the electrodes are each configured to emit energy to dissipate the deposit in the fluid flowline. 1. A tool for clearing a deposit within a fluid flowline , the tool comprising:a body having a central axis, a first end, a second end opposite the first end, and a radially outer surface extending axially from the first end to the second end;a first energy element coupled to the first end; andan electrode extending radially from the radially outer surface of the body;wherein the first energy element and the electrode are each configured to emit energy to dissipate the deposit in the fluid flowline.2. The tool of claim 1 , wherein the first energy element comprises a thermal coil configured to emit thermal energy.3. The tool of claim 2 , further comprising an umbilical coupled to the second end of the body claim 2 , wherein the umbilical includes a wireline and a conductor for transferring electrical power or control signals to the tool.4. The tool of claim 1 , further comprising a deployable scraper having a first end pivotally coupled to the body and a second end opposite the first end;wherein the deployable scraper has a first position with the second end distal an inner surface of the flowline and a second position with the second end proximal the inner surface.5. The tool of claim 1 , further comprising:an umbilical coupled to the second end of the body;a plurality of second energy elements disposed along the umbilical, wherein each of the plurality of second energy elements is configured to emit energy.6. The tool of claim 1 , further ...

Wellbore Plug Isolation System and Method

A wellbore plug isolation system and method for positioning plugs to isolate fracture zones in a horizontal, vertical, or deviated wellbore is disclosed. The system/method includes a wellbore casing laterally drilled into a hydrocarbon formation, a wellbore setting tool (WST) that sets a large inner diameter (ID) restriction sleeve member (RSM), and a restriction plug element (RPE). The WST is positioned along with the RSM at a desired wellbore location. After the WST sets and seals the RSM, a conforming seating surface (CSS) is formed in the RSM. The CSS is shaped to engage/receive RPE deployed into the wellbore casing. The engaged/seated RPE isolates heel ward and toe ward fluid communication of the RSM to create a fracture zone. The RPE's are removed or left behind prior to initiating well production without the need for a milling procedure. A large ID RSM diminishes flow constriction during oil production. 1. A wellbore plug isolation system comprising:a first restriction sleeve configured for fitting inside a well casing and having interlocking features at an end thereof;a second restriction sleeve configured for fitting inside a well casing and having interlocking features at an end thereof, the interlocking features configured such that the first and second restriction sleeves interlock;whereby, when deployed in a well casing, the first and second restriction sleeves seal against and grip an inner surface of the wellbore casing; andwhereby, after completing downhole functions requiring the restriction sleeves, the first and second restriction sleeves are removable as interlocked sleeves.2. A wellbore plug system of wherein the interlocking features are protruding fingers.3. A wellbore plug system of wherein the first and second restriction sleeves are part of a series of restriction sleeves.4. A wellbore plug system of wherein the first restriction sleeve has an elastomer configured to seal and grip against a wellbore casing.5. A wellbore plug system of ...

MILLING APPARATUS WITH STABILIZATION FEATURE

An apparatus for removing at least a section of a tubular includes an axially elongated body configured to be advanced through an inner tubular in a borehole to a selected location, the inner tubular disposed within an outer tubular in the borehole and having a diameter that is less than a diameter of the outer tubular. The apparatus also includes a cutter configured to be actuated between a closed position in which the cutter is disposed within the body and an open position in which the cutter extends radially, the cutter having a length sufficient to engage and cut the outer tubular, the cutter configured to be advanced in an axial cutting direction as the outer tubular is cut. The apparatus further includes an automatic stabilization member disposed on the cutter, the stabilization member configured to restrict lateral movement of the cutter by contacting the outer tubular during cutting. 1. An apparatus for removing at least a section of a tubular , comprising:an axially elongated body configured to be advanced through an inner tubular in a borehole in an earth formation to a selected location, the inner tubular disposed within an outer tubular in the borehole and having a diameter that is less than a diameter of the outer tubular; anda cutter configured to be actuated between a closed position in which the cutter is disposed within the body and an open position in which the cutter extends radially, the cutter having a length sufficient to engage and cut the outer tubular, the cutter configured to be advanced in an axial cutting direction as the outer tubular is cut; andan automatic stabilization member disposed on the cutter, the stabilization member configured to restrict lateral movement of the cutter by contacting the outer tubular during cutting of the outer tubular.2. The apparatus of claim 1 , wherein the selected location corresponds to a first window in the inner tubular claim 1 , and the cutter extends through the window when the cutter is in the open ...

METHODS OF USING A DEGRADABLE COMPONENT IN A WELLBORE AND RELATED SYSTEMS AND METHODS OF FORMING SUCH COMPONENTS

Methods of using a component in a subterranean wellbore include positioning a component including a degradable thermoset polymer material in a wellbore location, obstructing flow with the component, exposing the component to an acidic solution to degrade the selectively degradable thermoset polymer material and to remove the component from the wellbore location, and flowing a fluid through the wellbore location where the component was positioned. Methods of forming a component of a wellbore system include forming at least a portion of the component to comprise a degradable thermoset polymer material. Wellbore systems include at least one component including a selectively degradable thermoset polymer material. The selectively degradable thermoset polymer material may be a polyhexahydrotriazine (“PHT”) material. 1. A method of using a component in a subterranean wellbore , the method comprising:positioning a component comprising a degradable thermoset polymer in a wellbore location;obstructing, with the component, flow of a fluid through the wellbore location without degrading the degradable thermoset polymer;exposing the component to an acidic solution to degrade the degradable thermoset polymer and to remove the component from the wellbore location; andflowing a fluid through the wellbore location where the component was positioned.2. The method of claim 1 , wherein positioning a component in a wellbore location comprises positioning a drop ball against a drop ball seat.3. The method of claim 1 , wherein positioning a component comprising a degradable thermoset polymer in a wellbore location comprises positioning the component comprising a polyhexahydrotriazine material in the wellbore location.4. The method of claim 1 , wherein exposing the component to an acidic solution comprises exposing the component to the acidic solution exhibiting a pH of less than about 2.0.5. The method of claim 1 , wherein flowing a fluid through the wellbore location comprises flowing a ...

METHODS OF FORMING A DEGRADABLE COMPONENT

Methods of using a component in a subterranean wellbore include positioning a component including a degradable thermoset polymer material in a wellbore location, obstructing flow with the component, exposing the component to an acidic solution to degrade the selectively degradable thermoset polymer material and to remove the component from the wellbore location, and flowing a fluid through the wellbore location where the component was positioned. Methods of forming a component of a wellbore system include forming at least a portion of the component to comprise a degradable thermoset polymer material. Wellbore systems include at least one component including a selectively degradable thermoset polymer material. The selectively degradable thermoset polymer material may be a polyhexahydrotriazine (“PHT”) material. 1. A method of forming a component of a wellbore system , the method comprising: combining paraformaldehyde with a diamine material in a solvent; and', 'curing the combination of the paraformaldehyde, diamine material, and solvent at an elevated temperature of at least about 50° C. to form a polyhexahydrotriazine material, the polyhexahydrotriazine material being mechanically stable when exposed to wellbore temperatures in a range between 50° C. and 220° C., inclusive, and at wellbore fluid pressures equal to or greater than about 3,000 psi., 'forming at least a portion of the component of the wellbore system to comprise a degradable thermoset polymer material, comprising2. The method of claim 1 , wherein combining paraformaldehyde with a diamine material in a solvent comprises combining the paraformaldehyde with the diamine material in a solvent comprising N-methylpyrrolidone.3. The method of claim 1 , wherein forming at least a portion of the component comprises forming the at least a portion of the component within a mold.4. The method of claim 1 , wherein forming at least a portion of the component further comprises adding at least one filler material to ...

Downhole tool with a propellant charge

A method of removing material from a target is described. The method comprises the steps of providing a tool, the tool having at least one propellant source; pressurising the tool to a pressure higher than the environmental pressure; igniting at least one of the propellant source(s) to form a combustion zone; and directing combustion products generated at the combustion zone along at least one tool flow path. The tool flow path(s) is selectively openable or closable, such that upon exiting the tool flow path(s) the combustion products interact with a target, the interaction causing material to be removed from the target.

AUTOMATIC DRILLER

An automatic drilling apparatus having a tool body, a motive device connected to the tool body, and a drill bit connected to the tool body. The apparatus also includes a setting tool connected to the body, at least one sensor disposed on the tool body, and a computer disposed in the tool body, wherein the computer is configured to actuate the motive device, the drill bit, the setting tool, and the at least one sensor. 1. An automatic drilling apparatus comprising:a tool body;a motive device connected to the tool body;a drill bit connected to the tool body;a setting tool connected to the tool body;at least one sensor disposed on the tool body; anda computer disposed in the tool body, wherein the computer is configured to actuate the motive device, the drill bit, the setting tool, and the at least one sensor.2. The automatic drilling apparatus of claim 1 , further comprising a power source disposed in the tool body and connected to the computer.3. The automatic drilling apparatus of claim 1 , wherein the sensor is configured to measure at least one of a temperature claim 1 , a pressure claim 1 , a fluid type claim 1 , a load claim 1 , a density claim 1 , a specific gravity claim 1 , an induction claim 1 , a conduction claim 1 , a refraction claim 1 , an infrared signal claim 1 , a fiber optic signal claim 1 , an acceleration claim 1 , a velocity claim 1 , a wireless transmission claim 1 , a gyroscopic measurement claim 1 , an ultrasonic signal claim 1 , a tachometer measurement claim 1 , a casing collar locator claim 1 , a logging tool claim 1 , a imaging tool claim 1 , a modular formation dynamic testing tool claim 1 , a modular reservoir dynamic test claim 1 , and a position.4. The automatic drilling apparatus of claim 1 , further comprising a second drill bit disposed at an opposite end of the tool body from the drill bit.5. The automatic drilling apparatus of claim 1 , wherein the drill bit is collapsible.6. The automatic drilling apparatus of claim 1 , wherein ...

Wellbore Plug Isolation System and Method

A wellbore plug isolation system and method for positioning plugs to isolate fracture zones in a horizontal, vertical, or deviated wellbore is disclosed. The system/method includes a wellbore casing laterally drilled into a hydrocarbon formation, a wellbore setting tool (WST) that sets a large inner diameter (ID) restriction sleeve member (RSM), and a restriction plug element (RPE). The WST is positioned along with the RSM at a desired wellbore location. After the WST sets and seals the RSM, a conforming seating surface (CSS) is formed in the RSM. The CSS is shaped to engage/receive RPE deployed into the wellbore casing. The engaged/seated RPE isolates heel ward and toe ward fluid communication of the RSM to create a fracture zone. The RPE's are removed or left behind prior to initiating well production without the need for a milling procedure. A large ID RSM diminishes flow constriction during oil production. 1. A wellbore plug isolation apparatus comprising:(a) a restriction sleeve having an expandable body, the body in unexpanded condition configured to fit within a wellbore casing, the body configured to be hooped outward to an expanded condition swaged against an inner surface of the wellbore casing; and(b) a restriction plug configured to seat against the expanded restriction sleeve.2. The wellbore plug isolation apparatus of wherein the expandable body of the restriction sleeve has a sleeve thickness claim 1 , the sleeve thickness tapering in a wedge to a first terminal edge of the body.3. The wellbore plug isolation apparatus of claim 1 , further comprising at least one gripper on an outer surface of the restriction sleeve claim 1 , the gripper configured to grip an inner surface of the wellbore casing.4. The wellbore plug isolation apparatus of claim 1 , further comprising a plurality of grippers on an outer surface of the restriction sleeve claim 1 , the plurality of grippers configured to grip an inner surface of the wellbore casing.5. The wellbore plug ...

Fluid Activated Disintegrating Metal System

An engineered composite system designed to be passive or inert under one set of conditions, but becomes active when exposed to a second set of conditions. This system can include a dissolving or disintegrating core, and a surface coating that has higher strength or which only dissolves under certain temperature and pH conditions, or in selected fluids. These reactive materials are useful for oil and gas completions and well stimulation processes, enhanced oil and gas recovery operations, as well as in defensive and mining applications requiring high energy density and good mechanical properties, but which can be stored and used for long periods of time without degradation.

EXTENDED LASER TOOL

A laser tool apparatus includes a tool body; a fiber optic cable disposed in the tool body, the fiber optic cable including a laser head that emits a laser beam; a reshape optic disposed coaxially downstream of the fiber optic, the reshape optic reshaping the laser beam emitted from the laser head; and a flexible cable attached to the reshape optic. The flexible cable flexibly orients the laser beam at a desired angle within a borehole. 1. A laser tool apparatus comprising:a tool body;a fiber optic cable disposed in the tool body, the fiber optic cable comprising a laser head that emits a laser beam;a reshape optic disposed coaxially downstream of the fiber optic, the reshape optic reshaping the laser beam emitted from the laser head; anda flexible cable attached to the reshape optic,where the flexible cable flexibly orients the laser beam at a desired angle within a borehole.2. The apparatus of claim 1 , where the laser beam removes an obstacle within the borehole claim 1 , and where the laser beam cuts an object free during a fishing operation.3. The apparatus of claim 1 , where the laser head further comprises an anti-reflection surface coating.4. The apparatus of claim 1 , where the reshape optic further comprises an anti-reflection surface coating.5. The apparatus of claim 1 , where the reshape optic comprises a cylindrical body and a cone-shaped top portion claim 1 , where the cone-shaped top portion receives the laser beam from the fiber optic cable.6. The apparatus of claim 5 , where the reshape optic further comprises a group of lenses; anda purging nozzle.7. The apparatus of claim 6 , where the group of lenses adjusts the size of the laser beam emitted from the laser head.8. The apparatus of claim 1 , further comprising a camera.9. The apparatus of claim 8 , where the camera comprises an optical camera.10. The apparatus of claim 8 , where the camera comprise an acoustic camera.11. The apparatus of claim 1 , further comprising a nozzle for coaxial purging ...

Wireline Hydraulic Driven Mill Bottom Hole Assemblies and Methods of Using Same

A bottom hole assembly for engaging and removing an object within a wellbore comprises a cutting tool at a lower end. Continued engagement of the cutting tool with the object is facilitated by an axial compression device disposed within the bottom hole assembly below the anchor of the bottom hole assembly. The axial compression device comprises a compressed position and an expanded or extended position. As the object is being cut or abraded, the axial compression device moves from the compressed position toward the expanded position so that a continued downward force is transferred to the object by the bottom hole assembly.

DOWNHOLE TOOLS HAVING CONTROLLED DEGRADATION AND METHOD

A downhole assembly includes a matrix material and a unit in contact with the matrix material. The unit includes a core having an energetic material, an activator disposed in direct contact with the core, and at least one layer disposed on the core. The activator includes a triggering system having an igniter and a pre-set timer connected in an electrical circuit. The igniter is inactive in an open condition of the electrical circuit, and, after a pre-set time period, the pre-set timer closes the electrical circuit and the igniter is activated. 1. A downhole assembly comprising:a matrix material; and, a core comprising an energetic material configured to generate energy upon activation to facilitate degradation of the matrix material;', 'an activator disposed in direct contact with the core, the activator including a triggering system having an igniter and a pre-set timer connected in an electrical circuit; and,', 'at least one layer disposed on the core;, 'a unit in contact with the matrix material and embedded in the matrix material, the unit includingwherein the igniter is inactive in an open condition of the electrical circuit, and, after a pre-set time period, the pre-set timer closes the electrical circuit and the igniter is activated.2. The downhole assembly of claim 1 , wherein the matrix material and the unit are packaged together in a self-contained downhole tool.3. The downhole assembly of claim 1 , wherein the electrical circuit further includes a battery claim 1 , the battery arranged to provide electric current to set off the igniter in a closed condition of the circuit.4. The downhole assembly of claim 3 , wherein the timer includes a battery separate from the battery arranged to provide electric current to set off the igniter.5. The downhole assembly of claim 1 , wherein the matrix material is included in at least one component of a frac plug or in a flapper.6. The downhole assembly of claim 1 , further comprising a plurality of the units in contact ...

Downhole tools having controlled degradation and method

A downhole assembly includes a downhole tool including a degradable-on-demand material including: a matrix material; and, a unit in contact with the matrix material. The unit includes a core including an energetic material configured to generate energy upon activation to facilitate degradation of the downhole tool; and, an activator disposed in contact with the core, the activator including a triggering system having an electrical circuit and an igniter within the electrical circuit, the electrical circuit having an open condition and a closed condition, the electrical circuit configured to be in the closed condition after movement of an object downhole that engages directly or indirectly with the triggering system, and the igniter arranged to ignite the energetic material in the closed condition of the electrical circuit. In the open condition of the electrical circuit the igniter is inactive, and in the closed condition of the electrical circuit the igniter is activated.

Downhole Apparatus

A downhole tool for connecting and selectively disconnecting within a wellbore first and second portions of a downhole tool string from each other. The downhole tool may include a first connector sub connectable with the first portion of the downhole tool string, a second connector sub connectable with the second portion of the downhole tool string, an internal chamber, and a fastener connecting the first and second connector subs. The fastener may fluidly separate the internal chamber into a first chamber portion and a second chamber portion. The first chamber portion may be fluidly connected with a space external to the downhole tool. The downhole tool may be selectively operable to disconnect the first and second connector subs from each other to disconnect the first and second portions of the downhole tool string from each other. 1106-. (canceled)107. An apparatus comprising: a first connector sub connectable with the first portion of the downhole tool string;', 'a second connector sub connectable with the second portion of the downhole tool string;', 'an internal chamber; and', 'a fastener connecting the first and second connector subs, wherein the fastener fluidly separates the internal chamber into a first chamber portion and a second chamber portion, wherein the first chamber portion is fluidly connected with a space external to the downhole tool, and wherein the downhole tool is selectively operable to disconnect the first and second connector subs from each other to disconnect the first and second portions of the downhole tool string from each other., 'a downhole tool for connecting and selectively disconnecting within a wellbore first and second portions of a downhole tool string from each other, wherein the downhole tool comprises108. The apparatus of wherein the fastener contains an explosive charge selectively operable to detonate to sever the fastener and thus disconnect the first and second connector subs from each other.109. The apparatus of wherein ...

Consumable Downhole Tools

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non-explosive solid, such as thermite.

Consumable Downhole Tools

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non-explosive solid, such as thermite.

Method for removing a consumable downhole tool

A method for removing a downhole tool from a well bore comprises consuming at least a portion of the downhole tool within the well bore via exposure of the tool to heat and a source of oxygen. Another method of removing a downhole tool from a well bore comprises exposing the downhole tool to heat and a source of oxygen in situ within the well bore to desirably consume at least a portion of the tool within the well bore.

Consumable downhole tools

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non-explosive solid, such as thermite.

Consumable downhole tool

A torch apparatus for consuming a material having a fuel load that produces heat and a source of oxygen when burned, and a plurality of slots having interstitial spaces therebetween for allowing longitudinal flow of fluid along the torch apparatus without interfering with the flow of fluid through the slots. The slots are oriented such that the heat and source of oxygen are provided to a material that is at least partially consumed when exposed to heat and oxygen, to thereby cause destruction of an object containing the material or disengagement of the object such that it falls into the wellbore.

Consumable downhole tools

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non-explosive solid, such as thermite.

Method for removing a consumable downhole tool

A method for removing a downhole tool from a well bore comprises consuming at least a portion of the downhole tool within the well bore via exposure of the tool to heat and a source of oxygen. Another method of removing a downhole tool from a well bore comprises exposing the downhole tool to heat and a source of oxygen in situ within the well bore to desirably consume at least a portion of the tool within the well bore.

Consumable downhole tools

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non-explosive solid, such as thermite.

Apparatus and methods for overcoming an obstruction in a wellbore

Apparatus and methods for penetrating a downhole target within a wellbore include providing a body with a longitudinal axis, a first end, and a second end into a wellbore, the body having a nozzle at the first end. The nozzle is adapted to project a medium in a direction generally parallel to the longitudinal axis to affect a downhole target. An actuator in communication with the medium is usable to initiate the apparatus. The nozzle can be provided with a geometry configured for projecting the medium in a pattern that separates the downhole target into at least two portions. The medium can include a ferromagnetic material that becomes associated with the downhole target to facilitate recovery of the target or portions thereof using a retrieval device having a magnetic element.

Improved tool

Downhole tools having controlled disintegration

A multilayered unit includes a core comprising an energetic material and an activator; a support layer disposed on the core; and a protective layer disposed on the support layer, wherein the support layer and the protective layer each independently comprises a polymeric material, a metallic material, or a combination comprising at least one of the foregoing, provided that the support layer is compositionally different from the protective layer. The multilayered unit can be embedded in a component, attached to a component, or disposed between two components of a downhole assembly. The downhole assembly containing the multilayered unit has controlled disintegration in a downhole environment.

Downhole tools having controlled degradation and method

A downhole assembly includes a downhole tool including a degradable-on-demand material including: a matrix material; and, a unit in contact with the matrix material. The unit includes a core including an energetic material configured to generate energy upon activation to facilitate degradation of the downhole tool; and, an activator disposed in contact with the core, the activator including a triggering system having an electrical circuit and an igniter within the electrical circuit, the electrical circuit having an open condition and a closed condition, the electrical circuit configured to be in the closed condition after movement of an object downhole that engages directly or indirectly with the triggering system, and the igniter arranged to ignite the energetic material in the closed condition of the electrical circuit. In the open condition of the electrical circuit the igniter is inactive, and in the closed condition of the electrical circuit the igniter is activated.

Downhole tools having controlled degradation and method

A downhole assembly includes a matrix material and a unit in contact with the matrix material. The unit includes a core having an energetic material, an activator disposed in direct contact with the core, and at least one layer disposed on the core. The activator includes a triggering system having an igniter and a pre-set timer connected in an electrical circuit. The igniter is inactive in an open condition of the electrical circuit, and, after a pre-set time period, the pre-set timer closes the electrical circuit and the igniter is activated.

Method of removing metal obstructions from wells

Removal of metallic obstructions in well borings by oxidation

Consumable downhole tools

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, nonexplosive solid, such as thermite.

Improved tool

A method comprises the steps of providing a tool 10, the tool 10 having at least one propellant source 12; pressurising the tool 10 to a pressure higher than the environmental pressure; igniting at least one of the propellant source(s) 12 to form a combustion zone 20; and directing combustion products 28 generated at the combustion zone 20 along at least one tool flow path 30. The tool flow path(s) 30 may be selectively openable or closable, such that upon exiting the tool flow path(s) the combustion products 28 interact with a target, such as a casing 14, the interaction causing material to be removed from the target 14. Additives may be added to the combustion products and a sacrificial portion may be provided which supplies particles to the combustion products as it is eroded.

A centralizing and protective adapter for downhole torch and method of use

Apparatus and adapter are usable for aligning downhole torch apparatuses and cutting devices, including axial pyro torches, circulating pyro torches, and radial cutting and perforating torches, within a wellbore for removal of one or more downhole obstructions. The torch and/or cutting apparatus comprises a body having a nozzle adapted to project a fuel load, such as molten thermite or molten thermite with a polymer, in a direction aligned with the obstruction. The adapter comprises protruding elements for eliminating or diminishing damage to the area surrounding the obstruction, including the inner walls of the wellbore and/or casing, and can further comprise centralizers for alignment of the apparatus with the obstruction, within the wellbore.

Centralizing and protective adapter for downhole torch and method of use

Apparatus and adapter are usable for aligning downhole torch apparatuses and cutting devices, including axial pyro torches, circulating pyro torches, and radial cutting and perforating torches, within a wellbore for removal of one or more downhole obstructions. The torch and/or cutting apparatus comprises a body having a nozzle adapted to project a fuel load, such as molten thermite or molten thermite with a polymer, in a direction aligned with the obstruction. The adapter comprises protruding elements for eliminating or diminishing damage to the area surrounding the obstruction, including the inner walls of the wellbore and/or casing, and can further comprise centralizers for alignment of the apparatus with the obstruction, within the wellbore.

Improved tool

Downhole tool with a propellant charge

A method of removing material from a target is described. The method comprises the steps of providing a tool, the tool having at least one propellant source; pressurising the tool to a pressure higher than the environmental pressure; igniting at least one of the propellant source(s) to form a combustion zone; and directing combustion products generated at the combustion zone along at least one tool flow path. The tool flow path(s) is selectively openable or closable, such that upon exiting the tool flow path(s) the combustion products interact with a target, the interaction causing material to be removed from the target.

Downhole tool with a propellant charge

A method of removing material from a target is described. The method comprises the steps of providing a tool, the tool having at least one propellant source; pressurising the tool to a pressure higher than the environmental pressure; igniting at least one of the propellant source(s) to form a combustion zone; and directing combustion products generated at the combustion zone along at least one tool flow path. The tool flow path(s) is selectively openable or closable, such that upon exiting the tool flow path(s) the combustion products interact with a target, the interaction causing material to be removed from the target.

SEVERABLE DRILLING TOOLS

Consumable borehole tools

Consumable well tool and procedure using the same

Et nedhullsverktøy som har et legeme eller strukturell komponent omfatter et materiale som i det minste delvis konsumeres når det utsettes for varme og en oksygenkilde. Materialet kan omfatte et metall, slik som magnesium, som konverteres til magnesiumoksid når det utsettes for varme og en oksygenkilde. Nedhullsverktøyet kan videre omfatte en fakkel med en drivstoffiadning som produserer varmen og oksygenkilden når den brennes. Drivstoffkilden kan omfatte et brennbart, ikke-eksplosivt fast stoff, slik som termitt.

Consumable downhole tools

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non-explosive solid, such as thermite.

Method for Removing a Consumable Downhole Tool

A method for removing a downhole tool from a well bore comprises consuming at least a portion of the downhole tool within the well bore via exposure of the tool to heat and a source of oxygen. Another method of removing a downhole tool from a well bore comprises exposing the downhole tool to heat and a source of oxygen in situ within the well bore to desirably consume at least a portion of the tool within the well bore.

Consumable downhole tools

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non-explosive solid, such as thermite.

Consumable downhole tools

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non-explosive solid, such as thermite.

Consumable downhole tools

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is convened to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned. The fuel load may comprise a flammable, non- explosive solid, such as thermite.

Consumable downhole tool

Method for removing a consumable downhole tool

Method for removing a consumable downhole tool specification

A method for removing a downhole tool from a well bore comprising consuming at least a portion of the downhole tool within the well bore via exposure of the tool to heat and a source of oxygen Another method of removing a downhole tool from a well bore comprises exposing the downhole tool to heat and a source of oxygen in situ within the well bore to desirably consume at least a portion of the tool within the well bore.

Method for removing a consumable downhole tool specification

Consumable downhole tool

Method for removing a consumable downhole tool specification

A method for removing a downhole tool from a well bore comprising consuming at least a portion of the downhole tool within the well bore via exposure of the tool to heat and a source of oxygen Another method of removing a downhole tool from a well bore comprises exposing the downhole tool to heat and a source of oxygen in situ within the well bore to desirably consume at least a portion of the tool within the well bore.

Consumable downhole tool

A downhole tool having a body or structural component comprises a material that is at least partially consumed when exposed to heat and a source of oxygen. The material may comprise a metal, such as magnesium, which is converted to magnesium oxide when exposed to heat and a source of oxygen. The downhole tool may further comprise a torch with a fuel load that produces the heat and source of oxygen when burned, The fuel load may comprise a flammable, non-explosive solid, such as thermite.

One-Trip Cut-to-Release Apparatus and Method

Apparatuses and methods allow a downhole anchor device to be cut, released, and retrieved using a single one-trip cutter and removal assembly. The assembly preferably includes a cutter head recessed behind an anchor latch. The latch is landed to the anchor device to be removed and the cutter head is extended therefrom and activated. Once cut by the cutter head, the anchor device is retrieved upon a distal end of the assembly.

Method for fishing fishes buried by silt and fishing spear of method

本发明公开了一种打捞被泥沙掩埋落鱼的方法及其打捞矛，本发明是通过钻杆向井内注入高压水，高压水通过引锥上的喷口喷出，将掩盖在落鱼上的泥沙冲掉，喷出的高压水带着泥沙从钻杆与井壁之间的间隙排出井上；在冲刷泥沙的同时钻杆带着心轴缓缓下落，并插入断在井底的落鱼内孔；然后钻杆带动心轴旋转、缓慢上提，通过心轴上的被锥面锯齿螺纹迫使心轴上的卡瓦向外扩张卡住落鱼，然后钻杆上升，将落鱼从井下打捞上来。本发明能有效解决落鱼被泥浆填埋无法打捞的危害，大大提高LM-T型卡瓦打捞矛的打捞成功率；打捞同时能够有效维持井底干净，降低油、气井开采、勘探时的报废率；降低开采、勘探成本。

Web protectors for use in a downhole tool

Apparatus, systems and methods provide protection for components of a downhole tool by using a liner and/or web protector to minimize, block, or prevent erosion of a pillar component, which is adjacent to an opening of the downhole tool, during activation and operation of the downhole tool. The downhole tool comprises a body having an external surface and internal volume configured to store thermite fuel, wherein the thermite fuel is configured to ignite into a molten thermite fuel. The downhole tool comprises an opening extending from the internal volume through the external surface, and a pillar defining one side of the opening, wherein the opening is configured to project the molten thermite fuel. The downhole tool includes web protectors, abutting at least an internal side of the pillar, to block the molten thermite fuel from impinging the internal side of the pillar, thus protecting the components of the downhole tool.

Abrasive particle jet flow blockage removal and yield increase device for continuous oil pipe

本发明属于石油钻采领域，特别涉及一种连续油管磨料颗粒射流解堵增产装置，包括磨料颗粒储罐、螺旋输送机、磨料注入罐、上出料孔、下出料孔、混合腔、水泥车、连续油管车、连续油管、速度控制器、旋转喷头、磨料喷嘴、防砂工具等，通过专用的孔‑孔结构和负压吸入及重力作用，实现磨料颗粒的稳定均匀可控注入，利用连续油管将磨料颗粒和完井液输送至井下旋转喷头，磨料喷嘴喷出的高速磨料颗粒射流，可快速冲击破碎清除防砂管柱、防砂砾石层等防砂工具内的堵塞物，也可冲击破碎清除炮眼堵塞物，同时可对地层岩石内部产生裂纹，提高地层的渗透率，使油气顺利进入到井筒中，提高油气井产量。

Consumable downhole tool.

Una herramienta de fondo de pozo que tiene un cuerpo o componente estructural que comprende un material que se consume al menos parcialmente cuando se expone al calor y una fuente de oxígeno; el material puede comprender un metal, tal como magnesio, el cual se convierte en óxido de magnesio cuado se expone al calor y una fuente de oxígeno; la herramienta de fondo de pozo puede además comprender un soplete con una carga de combustible que produce el calor y la fuente de oxígeno cuando se quema; la carga de combustible puede comprender un sólido inflamable no explosivo tal como termita.

Drilling stabilizer and method

A rigid stabilizer sleeve having outwardly extending ribs is slidably received over a collar, internal clamp rings operate to clamp the stabilizer at any desired position on the drill collar; another aspect resides in a structure and method of operation enabling use of a washover tool upon seizure of the string by providing jaw clutch means on opposite ends of each stabilizer and an upwardly facing jaw clutch immediately above the bit so that the stabilizers can be cut by a washover tool to release the clamping means then moved down the string to the next lower stabilizer for engagement with the upper jaw clutch thereon to seize the released stabilizer and enable subsequent cutting through its remaining uncut length and similarly through the length of the other stabilizers until all stabilizers above the point at which the string has been seized have been cut through by the washover tool to enable the tool to clear the seized portion of the string.

Fluid activated disintegrating metal system

An engineered composite system designed to be passive or inert under one set of conditions, but becomes active when exposed to a second set of conditions. This system can include a dissolving or disintegrating core, and a surface coating that has higher strength or which only dissolves under certain temperature and pH conditions, or in selected fluids. These reactive materials are useful for oil and gas completions and well stimulation processes, enhanced oil and gas recovery operations, as well as in defensive and mining applications requiring high energy density and good mechanical properties, but which can be stored and used for long periods of time without degradation.

Web protectors for use in a downhole tool

Apparatus, systems and methods provide protection for components of a downhole tool by using a liner and/or web protector to minimize, block, or prevent erosion of a pillar component, which is adjacent to an opening of the downhole tool, during activation and operation of the downhole tool. The downhole tool comprises a body having an external surface and internal volume configured to store thermite fuel, wherein the thermite fuel is configured to ignite into a molten thermite fuel. The downhole tool comprises an opening extending from the internal volume through the external surface, and a pillar defining one side of the opening, wherein the opening is configured to project the molten thermite fuel. The downhole tool includes web protectors, abutting at least an internal side of the pillar, to block the molten thermite fuel from impinging the internal side of the pillar, thus protecting the components of the downhole tool.

Removing obstructions in a wellbore

A wellbore assembly includes a cable configured to be disposed within a wellbore. The wellbore assembly also includes a housing attached to a downhole end of the cable. The housing defines a fluid outlet at a downhole end of the housing. The housing includes an anchor and a collapsible gate. The anchor engages a wall of the wellbore under increased tension in the cable, thereby anchoring the housing to the wellbore. The collapsible gate is disposed inside the housing between an uphole end of the housing and the fluid outlet. The housing temporarily stores a treatment fluid configured to treat an obstruction in the wellbore. The collapsible gate is configured to break, with the anchor engaged, under further tension applied by the cable, inside the housing to allow the treatment fluid to flow out of the housing through the fluid outlet toward the obstruction.

Method and apparatus for recovering drill pipe from wells

Controlled electrolytic degradation of downhole tools

一种能够受控降解的井下组件，包括其中具有空腔的本体，所述本体由具有第一电极电势的第一材料形成。插入件设置在所述空腔中，所述插入件与本体电联接，并由具有第二电极电势的第二材料形成，第一电极电势比第二电极电势更负。

Wireline hydraulic driven mill bottom hole assemblies and methods of using same

A bottom hole assembly for engaging and removing an object within a wellbore comprises a cutting tool at a lower end. Continued engagement of the cutting tool with the object is facilitated by an axial compression device disposed within the bottom hole assembly below the anchor of the bottom hole assembly. The axial compression device comprises a compressed position and an expanded or extended position. As the object is being cut or abraded, the axial compression device moves from the compressed position toward the expanded position so that a continued downward force is transferred to the object by the bottom hole assembly.

A method and apparatus for shrinking tubular sections

The present invention relates to a shrinking tool (1) for shrinkage and recovery of a wellbore tubular, where the tool (1) comprises at least: a. one forming die (15) arranged along the axis of said wellbore tubular, b. one pulling means, and c. one active milling tool (13), where the forming die is configured to be pulled by the pulling means from inside the tubular and where the forming die consist of a c-shape lofted cut inside the tool body with a bigger profile diameter at the inlet and a smaller profile diameter at the outlet.