CUTTER ASSEMBLY FOR CUTTING A TUBULAR

A method of cutting a tubular includes disposing a rotatable cutter assembly in the tubular, the cutter assembly including a blade having a cutting portion; engaging the tubular using a trailing cutting structure of the cutting portion; engaging the tubular using an intermediate cutting structure of the cutting portion; forming a window in the tubular; and longitudinally extending the window using a leading cutting structure of the cutting portion. A rotatable blade includes a blade body extendable from a retracted position; and a cutting portion on the blade body having: a trailing cutting structure configured to engage the tubular, an intermediate cutting structure configured to engage the tubular while the trailing cutting structure engages the tubular, a leading cutting structure configured to engage an exposed wall thickness of the tubular; and an integral stabilizer disposed on at least a portion of an outer surface of the blade body.

TUBULAR CUTTING TOOL

A method of cutting a tubular includes providing a rotatable cutting tool in the tubular, the cutting tool having a blade with a cutting structure thereon; extending the blade relative to the cutting tool; rotating the cutting tool relative to the tubular; guiding the cutting structure into contact with the tubular; cutting the tubular using the blade; and limiting extension of the blade. A rotatable blade for cutting a tubular includes a blade body extendable from a retracted position; a cutting structure disposed on a leading edge of the blade body, the cutting structure configured to cut the tubular; a stop on a first surface of the blade body; and an initial engagement point on a second surface of the blade body, the initial engagement point configured to guide the cutting structure into contact with the tubular. 1. A method of cutting a tubular , comprising:providing a rotatable cutting tool in the tubular, the cutting tool having a blade with a cutting structure thereon;extending the blade relative to the cutting tool;rotating the cutting tool relative to the tubular;guiding the cutting structure into contact with the tubular;cutting the tubular using the blade; andlimiting extension of the blade.2. The method of claim 1 , wherein an actuation assembly acts to extend the blade relative to the cutting tool.3. The method of claim 2 , wherein the actuation assembly is hydraulic claim 2 , the method further comprising limiting extension of the blade regardless of a fluid pressure in the housing of the cutting tool.4. The method of claim 1 , wherein limiting extension of the blade comprises engaging a stop with the tubular.5. The method of claim 4 , further including at least one of:stabilizing the cutting tool by engaging the stop with the tubular,laterally moving the cutting tool by engaging the stop with the tubular, andcentralizing the cutting tool by engaging the stop with the tubular.6. The method of claim 1 , wherein the extending the blade relative to the ...

Wellbore apparatus for setting a downhole tool

A method of separating a downhole tubular includes running a tool into a wellbore to a predetermined location on a work string and actuating flow actuated slips. The method also includes maintaining slips in a set position by providing a first upward force on the work string. The method further includes rotating the work string to separate an upper portion of the tubular from a lower portion using a cutter assembly disposed on the work string below the slips and pulling the upper portion of the tubing and the tool from the wellbore.

Retention system for bottom hole assembly and whipstock

Methods and apparatus for releasing a lead mill of a BHA from a whipstock in a wellbore include slideably releasing the BHA from the whipstock without relative rotation and without destruction of a retractable bolt. A system includes: a bias mechanism; a retractable bolt at least partially disposed in the bottom hole assembly and biased to a retracted position by the bias mechanism; and a retraction actuator capable of selectably opposing the bias of the retractable bolt. A method includes: coupling a whipstock to a BHA with a retention system, including: a retractable bolt biased to retract into the BHA; and a retraction actuator configured to resist the bias of the retractable bolt; and after the whipstock and BHA have been disposed in a wellbore, activating the retraction actuator so that retraction of the retractable bolt ensues.

BOTTOM HOLE ASSEMBLY WITH A CLEANING TOOL

A bottom hole assembly for use in a wellbore includes a whipstock; a downhole tool coupled to the whipstock; and a cleaning tool coupled to the downhole tool for cleaning a portion of a wall of the wellbore, wherein the downhole tool is configured to engage the cleaned portion of the wall. In one example, the cleaning tool includes a body and a plurality of cleaning elements for cleaning the portion of the wall. 1. A bottom hole assembly for use in a wellbore , comprising:a whipstock;a downhole tool coupled to the whipstock; and a body; and', 'a plurality of cleaning elements for cleaning the portion of the wall,, 'a cleaning tool coupled to the downhole tool for cleaning a portion of a wall of the wellbore, the cleaning tool havingwherein the downhole tool is configured to engage the cleaned portion of the wall.2. The bottom hole assembly of claim 1 , wherein the cleaning tool further comprises:a plurality of pockets formed in the body; andthe plurality of cleaning elements disposed in the plurality of pockets and movable between a retracted position and an extended position.3. The bottom hole assembly of claim 1 , wherein the plurality of cleaning elements are hydraulically actuated.4. The bottom hole assembly of claim 3 , further comprising a biasing member for biasing the plurality of cleaning members.5. The bottom hole assembly of claim 1 , wherein the cleaning elements include a scraping profile.6. The bottom hole assembly of claim 1 , wherein the downhole tool comprises an anchor having a slip claim 1 , and the plurality of cleaning elements are axially aligned with the slip of the anchor.7. The bottom hole assembly of claim 1 , wherein the plurality of cleaning elements are threadedly attached to the body.8. The bottom hole assembly of claim 7 , wherein the plurality of cleaning elements comprises bristles.9. The bottom hole assembly of claim 1 , wherein the cleaning tool further comprises:a centralizer disposed around the body, the centralizer having a ...

Rotational Lock for Mating Wellhead Components

A wellhead () with a casing head () has tubing () in its therethrough. A mating component, such as a pack-off (), installs in the wellhead on the end of the tubing above a casing hanger (). The bore () of the pack-off defines circumferential grooves—each having a canted spring (A, B) disposed therein. The canted springs engaged between the groove and the tubing and restricting relative rotation between the pack-off and the tubing. 1. A component for a wellhead having a throughbore with a tubing component disposed therein , the component comprising:a body positioning in the throughbore of the wellhead, the body defining a bore therethrough, the bore defining at least one groove thereabout, the bore disposed at least partially on the tubing component; andat least one canted spring disposed in the at least one groove and engaged between the at least one groove and the tubing component, the at least one canted spring restricting rotation of the body relative to the tubing in at least one direction.2. The component of claim 1 , wherein the body further comprises:an internal seal disposed in the bore and sealing against the tubing component; andan external seal disposed about the body and sealing against the throughbore of the wellhead.3. The component of claim 1 , wherein the bore defines a shoulder engaging a distal end of the tubing component.4. The component of claim 1 , wherein the body comprises a pack-off.5. The component of claim 4 , further comprising a slip hanger disposed in the throughbore of the wellhead on the tubing component below the pack-off.6. The component of claim 1 , wherein the at least one groove defines a backwall divided at an angle and engaging coils of the at least one canted spring at two points.7. The component of claim 1 , wherein the at least one groove defines a groove width; and wherein the at least one canted spring defines a coil width claim 1 , the groove width and the coil width being configured to at least partially define the ...

TENSION CUTTING CASING AND WELLHEAD RETRIEVAL SYSTEM

An apparatus for use in a well includes a tubular mandrel configured to connect to a downhole assembly. An outer hub is configured to attach to a wellhead and has a bore therethrough. An inner housing is disposed on the tubular mandrel and configured to attach the outer hub to the wellhead. A clutch assembly is disposed within the bore of the outer hub and movable between a locked position and an unlocked position, wherein the tubular mandrel is rotatable relative to the inner housing to operate the downhole assembly in the unlocked position. 1. An apparatus for use in a well , comprising:a tubular mandrel configured to connect to a downhole assembly;an outer hub having a bore therethrough and configured to attach to a wellhead;an inner housing disposed on the tubular mandrel and configured to attach the outer hub to the wellhead; anda clutch assembly disposed within the bore of the outer hub and movable between a locked position and an unlocked position, wherein the tubular mandrel is rotatable relative to the inner housing to operate the downhole assembly in the unlocked position.2. The apparatus of claim 1 , wherein the downhole assembly is operable to perform an operation in the well.3. The apparatus of claim 2 , the downhole assembly further comprising a rotary cutter assembly operable to cut a casing string disposed in the well.4. The apparatus of claim 1 , wherein the clutch assembly is movable to the locked position to rotationally couple the tubular mandrel to the inner housing.5. The apparatus of claim 1 , wherein the tubular mandrel is longitudinally movable to move the clutch assembly to the unlocked position.6. The apparatus of claim 1 , wherein the tubular mandrel is longitudinally movable to apply an axial force to the wellhead.7. The apparatus of claim 6 , the clutch assembly further comprising a biasing member operable to bias the clutch assembly to the locked position.8. The apparatus of claim 1 , the outer hub further comprising a latch member ...

Fusible Metal Clay, Structures Formed Therefrom, and Associated Methods

Structures for a tool surface of a downhole tool are constructed from a metal clay molded in a wet state. The wet state clay is a workable combination that can have a braze alloy grain, a tungsten carbide grain, and a binder. Additional cutting inserts can be embedded in the molded clay. Heat treatment applied to the molded metal clay causing the binder to be combusted and consumed. The braze alloy melts and then cools into a fused state with the tungsten carbide grain therein. The structure can affix to the tool surface of the tool by first being fused and then attached by brazing to the tool. Alternatively, the structure can be positioned in a fusible state adjacent the tool surface. When the heat treatment is applied, the structure fuses together and forms a metallurgical bond with the tool surface of the tool. 1. A method of overlaying a downhole tool for engagement downhole , the method comprising:molding a clay in a wet state into a structure, the clay in the wet state being a workable combination comprising a first grain, a second grain, and a binder, the first grain comprising a metal alloy having a first hardness and a first melting point, the second grain comprising a second material, the second material having a second hardness greater than the first hardness of the metal alloy and having a second melting point higher than of the first melting point of the metal alloy, the binder binding the first and second grains into the workable combination and having a combustion temperature at least not greater than the first melting point; and positioning the structure in a fusible state adjacent the downhole tool;', 'applying a heat treatment to the structure at least up to the first melting point;', 'fusing the structure together with the applied heat treatment; and', 'forming a metallurgical bond between the structure with the downhole tool with the applied heat treatment., 'affixing the structure to the downhole tool by2. The method of claim 1 , wherein the ...

DOWNHOLE CASING PULLING TOOL

A method and apparatus for cutting and pulling a casing string from a well. a downhole casing pulling tool includes a tubular housing having a bore therethrough, a packer assembly configured to isolate an annulus between a casing and the tool, a slip assembly configured to engage the casing, and a piston assembly disposed in the bore of the tubular housing. The piston assembly is configured to operate an actuator, wherein the actuator is configured to operate at least one of the packer assembly and the slip assembly and modify a fluid pressure in the bore of the tubular housing. 1. A downhole casing pulling tool , comprising:a tubular housing having a bore therethrough;a packer assembly configured to isolate an annulus between a casing and the tool;a slip assembly configured to engage the casing; and operate an actuator, wherein the actuator is configured to operate at least one of the packer assembly and the slip assembly; and', 'modify a fluid pressure in the bore of the tubular housing., 'a piston assembly disposed in the bore of the tubular housing and configured to2. The tool of claim 1 , wherein the piston assembly is longitudinally movable within the tubular housing.4. The tool of claim 3 , wherein the actuator housing is longitudinally movable relative to the guide mandrel.5. The tool of claim 1 , wherein the actuator further comprises:a slip piston coupled to the drive mandrel and configured to actuate the slip assembly; anda packer piston coupled to the actuator housing and configured to actuate the packer assembly.6. The tool of claim 1 , wherein the slip assembly comprises:a slip mandrel having a bore therethrough;at least one slip movable between an extended position and a retracted position along the slip mandrel; anda biasing member configured to bias the at least one slip towards the retracted position.7. The tool of claim 1 , wherein the packer assembly comprises:a packer mandrel having a bore therethrough;at least one packing element disposed on ...

Gripping apparatus and associated methods of manufacturing

A method of manufacturing a gripping element can include depositing a gripping element material, and thereby gradually building up the gripping element and forming a gripping surface thereon, the gripping surface being configured to grippingly engage a well surface. A gripping system can include at least one extendable gripping element configured to grip a well surface, and the gripping element including a gripping element material enclosing one or more voids in the gripping element. Another gripping system can include at least one extendable gripping element having a gripping surface configured to grip a well surface, and the gripping element including at least two gripping element materials deposited to form the gripping element. Properties or characteristics may gradually change or vary from one gripping element material to another gripping element material in the gripping element. The gripping element materials may each include the same basic matrix material.

SEALING APPARATUS AND ASSOCIATED METHODS OF MANUFACTURING

A method of manufacturing a seal element can include depositing a seal element material from an instrument at a location of the seal element, and depositing another seal element material from the instrument at another location of the seal element, the seal element materials being different from each other. A sealing system can include a seal element, the seal element having at least one seal element material about at least one void in the seal element, the seal element material enclosing the void. Another sealing system can include a seal element, the seal element having multiple different seal element materials deposited at respective multiple different locations in the seal element. Properties or characteristics may gradually change or vary from one seal element material to another seal element material in the seal element. The seal element materials may each include the same basic matrix material. 1. A method of manufacturing a seal element , the method comprising:depositing a first seal element material from an instrument at a first location of the seal element; anddepositing a second seal element material from the instrument at a second location of the seal element,the first seal element material being different from the second seal element material.2. The method of claim 1 , in which a property of the first and second seal element materials is different claim 1 , the property being selected from the group consisting of density claim 1 , compressibility claim 1 , porosity claim 1 , elasticity claim 1 , toughness and hardness of the seal element material.3. The method of claim 1 , in which the second seal element material has a higher compressibility than the first seal element material claim 1 , and the second location is external relative to the first location.4. The method of claim 1 , in which the second seal element material has a higher density than the first seal element material claim 1 , and the second location is external relative to the first location ...

Wellbore apparatus for setting a downhole tool

A method and apparatus for a locking system for a downhole tool comprising: a first portion having a plurality of displaceable members, a second portion disposed around the first portion; a locked position wherein axial movement between the members is prevented; and an unlocked position wherein axial movement between the members is permitted.

Methods for producing even wall down-hole power sections

Embodiments of the present invention provide methods for manufacturing an even-wall rotor or stator that do not suffer from drawbacks of the prior art. Even-wall rotors or stators produced according to those methods are also provided. In one embodiment, a method for manufacturing a rotor or stator for use in a mud motor is provided. The method includes providing a vacuum chamber; providing a metal electrode at least partially disposed in the vacuum chamber; providing a mold disposed in the vacuum chamber; and melting a portion of the electrode with a direct current arc, the molten metal flowing into the mold ring.

Tubular cutting tool

A method of cutting a tubular includes providing a rotatable cutting tool in the tubular, the cutting tool having a blade with a cutting structure thereon; extending the blade relative to the cutting tool; rotating the cutting tool relative to the tubular; guiding the cutting structure into contact with the tubular; cutting the tubular using the blade; and limiting extension of the blade.

WHIPSTOCK ASSEMBLY

A method of manufacturing a whipstock assembly includes cutting a shape of a body plate from a flat metal plate; forming a concave surface in the body plate; and attaching a body core to the body plate in a mold. 1. A method of manufacturing a whipstock assembly , comprising:cutting a shape of a body plate from a flat metal plate;forming a concave surface in the body plate; andattaching a body core to the body plate in a mold.2. The method of claim 1 , wherein the shape of the body plate includes at least one tab.3. The method of claim 2 , further comprising bending the at least one tab.4. The method of claim 3 , wherein attaching the body core comprises:attaching the body core to an inner surface of the body plate; andat least partially disposing the at least one tab in the core body.5. The method of claim 2 , wherein the at least one tab includes a locking feature.{'claim-ref': {'@idref': 'CLM-00005', 'claim 5'}, 'The method of , wherein the anchoring feature comprises a hole formed in the tab.'}6. The method of claim 1 , wherein forming a concave surface in the body plate comprises using a pressing operation to form the concave surface.7. The method of claim 6 , wherein cutting the shape of the body plate is performed using a stamping process claim 6 , a laser cutting process claim 6 , or a water jet cutting process claim 6 ,8. The method of claim 1 , wherein the shape of the body plate includes a lug section.9. The method of claim 1 , wherein attaching the body core to the body plate comprises adding a filler material to the mold and allowing the filler material to solidify in the mold.10. The method of claim 9 , wherein adding the filler material comprises injecting a filler material into the mold.11. The method of claim 9 , wherein the filler material is selected from the group consisting of thermoset plastic claim 9 , concrete claim 9 , polyvinylidene fluoride polymers claim 9 , and santoprene polymer.12. The method of claim 1 , further comprising forming a ...

A downhole tool for use in a wellbore

The present invention provides a method and an apparatus for use in a wellbore tool. The apparatus includes a body (115) and a sliding member (155), wherein the sliding member and a mechanical portion (250) moves between a first position and a second position. A valve assembly (210) causes the sliding member and mechanical portion to shift to its second position at a predetermined flow rate of fluid through the body. The invention also provides an apparatus for a downhole tool that includes a mandrel and a sliding member disposed on the mandrel. The sliding member including a plurality of fingers (285) and a plurality of heads (275), wherein the plurality of fingers are slideably recessed within a plurality of longitudinal grooves (355). The invention further provides a collet assembly that includes a body and at least two extendable members (275), whereby as the members extend outward, the members are rotated.

Acoustical telemetry

Method, apparatus and article of manufacture for monitoring and characterizing the operation of a transducer (i.e., motor or pump) downhole. In particular, transducer RPMs are determined by analysis of acoustic information. An acoustical source (signal generator) located on a downhole tool (e.g., a drill string) creates acoustic energy which is received and processed by a receiving unit, which may be located at the surface of a wellbore. The acoustical source is operably connected to the transducer, so that the frequency of the signal produced by the acoustical source corresponds to the speed of the transducer. The acoustic signal of the acoustical source may then be isolated from other acoustical energy produce by downhole equipment, such as a drill bit. Having determined transducer speed by isolation of the acoustic signal, other operating parameters may be determined. illustrative operating parameters include torque, flow, pressure, horsepower, and weight-on-bit.

Tension cutting casing and wellhead retrieval system

An apparatus for use in a well includes a tubular mandrel (115) configured to connect to a downhole assembly. An outer hub is configured to attach to a wellhead (10) and has a bore therethrough. An inner housing (130) is disposed on the tubular mandrel (115) and configured to attach the outer hub (140) to the wellhead (10). A clutch assembly is disposed within the bore of the outer hub (140) and movable between a locked position and an unlocked position, wherein the tubular mandrel (115) is rotatable relative to the inner housing (130) to operate the downhole assembly in the unlocked position.

Energized composite metal to metal seal

An energized composite metal to metal seal. A sealing device includes a metal seal with a metal sealing surface facing radially outward, and another metal sealing surface facing radially inward; and a nonmetal seal including a nonmetal sealing surface positioned proximate one metal sealing surface and facing radially outward, and another nonmetal sealing surface positioned proximate the other metal sealing surface and facing radially inward. A method of sealing between a housing assembly and a closure member includes applying a pressure differential across the sealing device while the sealing device seals between the housing assembly and the closure member, and the pressure differential increasing contact pressure in a metal to metal seal between the housing assembly and a metal sealing surface on the metal seal, and increasing contact pressure in a metal to metal seal between the closure member and another metal sealing surface on the metal seal.

Bottom hole assembly with a cleaning tool

A method of positioning a bottom hole assembly in a wellbore includes lowering the bottom hole assembly into the wellbore. The bottom hole assembly has a whipstock, a downhole tool, and a cleaning tool having a cleaning element. The method also includes cleaning at least a portion of a wall of the wellbore using the cleaning tool, and activating the downhole tool to engage the cleaned portion of the wall.

Metal to metal seal of energized composite material

Un dispositivo (30) de sellado, que comprende: un sello (32) metálico, en el que el sello (32) metálico tiene una sección transversal generalmente con forma de I, en el que el sello (32) metálico incluye brazos (30a, 30b, 40a, 40b) que se extienden axialmente hacia el exterior desde un alma (36) central que se extiende radialmente definiendo de esta manera rebajes (42a, 42b) opuestos, primero y segundo, entre los brazos (30a, 40a y 30b, 40b), en el que cada brazo (30a, 30b, 40a, 40b) comprende una superficie de sellado de manera que el sello metálico comprende superficies (32a, 32b, 38) de sellado primera, segunda, tercera y cuarta, la primera superficie (32a, 32b) de sellado metálica forma un sello metal a metal con la superficie (44) de sellado cilíndrica interna, y la segunda superficie (38) de sellado metálica forma un sello metal a metal con la superficie (46) de sellado cilíndrica externa, el dispositivo de sellado incluye además un primer sello (48a) no metálico dispuesto en un primer rebaje (42a) en el sello metálico, en el que el primer rebaje (42a) está posicionado radialmente entre las superficies (32a, 32b, 38) de sellado metálicas primera y segunda, el primer sello (48a) no metálico empuja la primera superficie (32a, 32b) de sellado metálica contra la superficie (44) de sellado cilíndrica interna y empuja la segunda superficie (38) de sellado metálica contra la superficie (46) de sellado cilíndrica externa en respuesta a una primera diferencia de presión a través del dispositivo de sellado, en el que el dispositivo (30) de sellado incluye además un segundo sello (48b) no metálico dispuesto en un segundo rebaje (42b) en el sello (32) metálico, en el que el segundo rebaje (42b) está posicionado entre las superficies (32a, 32b, 38) de sellado metálicas tercera y cuarta, en el que el segundo sello (48b) no metálico empuja la tercera superficie (32a, 32b) de sellado metálica contra la superficie (44) de sellado cilíndrica interna y empuja la cuarta ...

Well tool with circumferential variations on packing element

A well tool having an enhanced performance packing element assembly. A well tool includes a packing element assembly for sealingly engaging a surface, the assembly including a packing element having at least one circumferential variation. Another well tool includes a packing element assembly including a packing element and a backup ring, the packing element being configured to bias the backup ring into contact with a surface opposite a circumferential portion of the backup ring, while another circumferential portion does not contact the surface. A method of setting a well tool includes providing a packing element assembly with multiple packing elements, and setting the well tool by squeezing fluid from between the packing elements via a gap, and then closing off the gap.

Flow energy dissipation for downhole injection flow control devices

A well system can include a flow control device which regulates flow of a fluid from an interior of the device outwardly through an exit port, and a deflector which outwardly overlies the exit port and provides fluid communication between the exit port and an annulus formed radially between the deflector and a wellbore lining. The deflector can diffuse the flow of the fluid prior to impingement on the wellbore lining. A flow control assembly can include a flow control device which regulates flow of a fluid from an interior of the device outwardly through an exit port, and a deflector which outwardly overlies the exit port, the deflector including at least one opening, and the opening being circumferentially offset relative to the exit port. A form of an interior surface of the deflector and/or an exterior surface of the flow control device can diffuse the flow of the fluid.

Bottom hole assembly with a cleaning tool

A bottom hole assembly for use in a wellbore includes a whipstock; a downhole tool coupled to the whipstock; and a cleaning tool coupled to the downhole tool for cleaning a portion of a wall of the wellbore, wherein the downhole tool is configured to engage the cleaned portion of the wall. In one example, the cleaning tool includes a body and a plurality of cleaning elements for cleaning the portion of the wall.

A downhole tool for use in a wellbore

The present invention provides a method and an apparatus for use in a wellbore tool. The apparatus includes a body (115) and a sliding member (155), wherein the sliding member and a mechanical portion (250) moves between a first position and a second position. A valve assembly (210) causes the sliding member and mechanical portion to shift to its second position at a predetermined flow rate of fluid through the body. The invention also provides an apparatus for a downhole tool that includes a mandrel and a sliding member disposed on the mandrel. The sliding member including a plurality of fingers (285) and a plurality of heads (275), wherein the plurality of fingers are slideably recessed within a plurality of longitudinal grooves (355). The invention further provides a collet assembly that includes a body and at least two extendable members (275), whereby as the members extend outward, the members are rotated.

lower end of drill string with a cleaning tool

EXTREMIDADE INFERIOR DA COLUNA DE PERFURAÇÃO COM UMA FERRAMENTA DE LIMPEZA. Uma extremidade inferior da coluna de perfuração para uso em um poço inclui uma cunha de desvio; uma ferramenta de fundo de poço acoplada à cunha de desvio; e uma ferramenta de limpeza acoplada à ferramenta de fundo de poço para limpar uma porção de uma parede do furo de poço, em que a ferramenta de fundo de poço é configurada para engatar a porção limpa da parede. Em um exemplo, a ferramenta de limpeza inclui um corpo e uma pluralidade de elementos de limpeza para limpar a porção da parede. LOWER END OF THE COLUMN OF DRILLING WITH A CLEANING TOOL. A lower end of the drill string for use in a well includes a deflection wedge; one downhole tool coupled to the deflection wedge; is cleaning tool attached to downhole tool to clean a portion of a wellbore wall, where the bottom tool shaft is configured to engage the clean portion of the wall. On a example, the cleaning tool includes a body and a plurality of cleaning elements to clean the wall portion.

Tension cutting casing and wellhead retrieval system

An apparatus for use in a well includes a tubular mandrel (115) configured to connect to a downhole assembly. An outer hub is configured to attach to a wellhead (10) and has a bore therethrough. An inner housing (130) is disposed on the tubular mandrel (115) and configured to attach the outer hub (140) to the wellhead (10). A clutch assembly is disposed within the bore of the outer hub (140) and movable between a locked position and an unlocked position, wherein the tubular mandrel (115) is rotatable relative to the inner housing (130) to operate the downhole assembly in the unlocked position.

Well tool having enhanced packing element assembly

Apparatus to actuate a downhole tool

The invention provides an apparatus for actuating a downhole tool by utilizing a pressure differential created by fluid flowing through a conduit. The conduit is in communication with a pressure sensing line that is selectively exposable to areas of the conduit having different pressures. By exposing the pressure sensing line to a portion of the conduit having a predetermined pressure therein, the pressure sensing line cause actuation of a hydraulic tool therebelow.

Well tool having enhanced packing element assembly

Energized composite metal to metal seal

An energized composite metal to metal seal. A sealing device includes a metal seal with a metal sealing surface facing radially outward, and another metal sealing surface facing radially inward; and a nonmetal seal including a nonmetal sealing surface positioned proximate one metal sealing surface and facing radially outward, and another nonmetal sealing surface positioned proximate the other metal sealing surface and facing radially inward. A method of sealing between a housing assembly and a closure member includes applying a pressure differential across the sealing device while the sealing device seals between the housing assembly and the closure member, and the pressure differential increasing contact pressure in a metal to metal seal between the housing assembly and a metal sealing surface on the metal seal, and increasing contact pressure in a metal to metal seal between the closure member.

Downhole casing pulling tool

A method and apparatus for cutting and pulling a casing string from a well. A downhole casing pulling tool includes a tubular housing having a bore therethrough, a packer assembly configured to isolate an annulus between a casing and the tool, a slip assembly configured to engage the casing, and a piston assembly disposed in the bore of the tubular housing. The piston assembly is configured to operate an actuator, wherein the actuator is configured to operate at least one of the packer assembly and the slip assembly and modify a fluid pressure in the bore of the tubular housing.

Downhole casing pulling tool

Downhole collar utilizing fusible anchor elements

A sleeve can be used as a stop collar on tubing. A fusible element disposed about the inside or outside surface of the collar can be accessed by electrodes via the at least one access point in the collar. An insulator insulates the fusible element from the collar, while the electrodes apply electric current to the fusible element. A fusible material of the fusible element is heated to melting in response to the applied electric current and affixes the collar to the tubing with a metallurgical bond formed from the melting and re-solidifying of the fusible material inside a space between the first circumferential surface of the collar and the opposing circumferential surface of the tubing. The fusible material can be heated to melting directly with the electric current, or an ignitable material activated with the electric current can melt the fusible material.

Cutter assembly for cutting a tubular, bottom hole assembly comprising such a cutter assembly and method of cutting a tubular

A method of cutting a tubular includes disposing a rotatable cutter assembly in the tubular, the cutter assembly including a blade (20) having a cutting portion (50); engaging the tubular using a trailing cutting structure of the cutting portion; engaging the tubular using an intermediate cutting structure of the cutting portion; forming a window in the tubular and longitudinally extending the window using a leading cutting structure of the cutting portion. A rotatable blade (20) includes a blade body (54) extendable from a retracted position; and a cutting portion (50) on the blade body having: a trailing cutting structure configured to engage the tubular, an intermediate cutting structure configured to engage the tubular while the trailing cutting structure engages the tubular, a leading cutting structure configured to engage an exposed wall thickness of the tubular; and an integral stabilizer disposed on at least a portion of an outer surface of the blade body.

Contingency release of mill from whipstock

A bottom hole assembly can include a mill and a whipstock having an upper end and an opening. A retractable pin extends from the mill into the opening. A section of the whipstock is separable from the whipstock in response to a force applied to the mill. The section is positioned between the opening and the upper end. A method can include positioning a bottom hole assembly in a well, the bottom hole assembly including a whipstock releasably secured to a mill, and then releasing the mill from the whipstock by separating a section of the whipstock from a remainder of the whipstock. Another method can include conveying a bottom hole assembly into a well, setting an anchor, then applying pressure to a hydraulic release mechanism, and then applying a force to the mill, thereby separating a section of the whipstock from a remainder of the whipstock.

Downhole casing pulling tool

A method and apparatus for cutting and pulling a casing string from a well. A downhole casing pulling tool includes a tubular housing having a bore therethrough, a packer assembly configured to isolate an annulus between a casing and the tool, a slip assembly configured to engage the casing, and a piston assembly disposed in the bore of the tubular housing. The piston assembly is configured to operate an actuator, wherein the actuator is configured to operate at least one of the packer assembly and the slip assembly and modify a fluid pressure in the bore of the tubular housing.

Retention system for bottom hole assembly and whipstock

Methods and apparatus for releasing a lead mill of a BHA from a whipstock in a wellbore include slideably releasing the BHA from the whipstock without relative rotation and without destruction of a retractable bolt. A system includes: a bias mechanism; a retractable bolt at least partially disposed in the bottom hole assembly and biased to a retracted position by the bias mechanism; and a retraction actuator capable of selectably opposing the bias of the retractable bolt. A method includes: coupling a whipstock to a BHA with a retention system, including: a retractable bolt biased to retract into the BHA; and a retraction actuator configured to resist the bias of the retractable bolt; and after the whipstock and BHA have been disposed in a wellbore, activating the retraction actuator so that retraction of the retractable bolt ensues.

Wellbore apparatus for setting a downhole tool

A first aspect relates to a method of separating a downhole tubular comprising running a tool (100, Fig 1) into a wellbore to a predetermined location on a work string. Flow actuated slips 220 are actuated and the slips are maintained in the set position by providing a first upward force on the work string. The work string is rotated to operate a cutter assembly disposed on the work string below the slips. This separates an upper portion of the tubular from a lower portion. The upper portion of tubing and the tool are pulled from the wellbore. A second aspect relates to a method of separating a downhole tubular that incorporates the features of the first aspect, in addition to applying a second higher upward force on the work string to unlock and set a packer 300; flowing fluid through the work string and into an annular area between tubular and a borehole; and reducing the second upward force on the work string to unset and re-lock the packer. The annular area is accessible through a cut formed between the upper and lower portions by the cutter assembly.

Wellbore apparatus for setting a downhole tool

A first aspect relates to a method of separating a downhole tubular comprising running a tool (100, Fig 1) into a wellbore to a predetermined location on a work string. Flow actuated slips 220 are actuated and the slips are maintained in the set position by providing a first upward force on the work string. The work string is rotated to operate a cutter assembly disposed on the work string below the slips. This separates an upper portion of the tubular from a lower portion. The upper portion of tubing and the tool are pulled from the wellbore. Preferably a second higher upward force is applied to unlock and set a packer and fluid flows into an annular area between the tubular and work string. A second aspect relates to a downhole apparatus comprising a set of flow actuated slips that are actuated and maintained in a set position by a first upward force; a tool and a locking system (400, Fig 2) to prevent premature actuation of the tool. The locking system comprises: a first portion with a collet sleeve (410, Fig 4C) and a plurality of displaceable finger members (415, Fig 4C), a second portion including a collet housing (420, Fig 4C) and wherein the locking system is unlocked by an additional upward force applied to the tool.

Wellbore apparatus for setting a downhole tool

Method of separating a downhole tubular via applying upward pulling force to slips

Gripping apparatus and associated methods of manufacturing

A method of manufacturing a gripping element can include depositing a gripping element material, and thereby gradually building up the gripping element and forming a gripping surface thereon, the gripping surface being configured to grippingly engage a well surface. A gripping system can include at least one extendable gripping element configured to grip a well surface, and the gripping element including a gripping element material enclosing one or more voids in the gripping element. Another gripping system can include at least one extendable gripping element having a gripping surface configured to grip a well surface, and the gripping element including at least two gripping element materials deposited to form the gripping element. Properties or characteristics may gradually change or vary from one gripping element material to another gripping element material in the gripping element. The gripping element materials may each include the same basic matrix material.

Aparelho para uso em um poço e método de execução de uma operação em um poço

um aparelho para uso em um poço inclui um mandril tubular (115) configurado para conectar-se a uma instalação de fundo do poço. um cubo externo é configurado para fixar-se a uma cabeça de poço (10) e tem um furo que o atravessa. um alojamento interno (130) está posicionado sobre o mandril tubular (115) e é configurado para fixar o cubo externo (140) à cabeça de poço (10). um conjunto de embreagem está posicionado dentro do furo do cubo externo (140) e é móvel entre uma posição travada e uma posição destravada, onde o mandril tubular (115) é rotativo em relação ao alojamento interno (130) para operar a instalação de fundo do poço na posição destravada.

Contingency release of mill from whipstock

A bottom hole assembly can include a mill and a whipstock having an upper end and an opening. A retractable pin extends from the mill into the opening. A section of the whipstock is separable from the whipstock in response to a force applied to the mill. The section is positioned between the opening and the upper end. A method can include positioning a bottom hole assembly in a well, the bottom hole assembly including a whipstock releasably secured to a mill, and then releasing the mill from the whipstock by separating a section of the whipstock from a remainder of the whipstock. Another method can include conveying a bottom hole assembly into a well, setting an anchor, then applying pressure to a hydraulic release mechanism, and then applying a force to the mill, thereby separating a section of the whipstock from a remainder of the whipstock.

Liberacion de contingencia de fresadora de cu?a de desviacion.

Un ensamblaje de orificio inferior puede incluir una fresadora y una cuña de desviación con un extremo superior y una abertura. Un pasador retráctil se extiende desde la fresadora hasta la abertura. Una sección de la cuña de desviación es separable de la cuña de desviación en respuesta a una fuerza aplicada a la fresadora. La sección se coloca entre la abertura y el extremo superior. Un método puede incluir la colocación de un ensamblaje de orificio de fondo en un pozo, el ensamblaje de orificio de fondo incluye una cuña de desviación desprendible asegurada a una fresadora, y luego liberar la fresadora de la cuña de desviación desprendiendo una sección de la cuña de un resto de la cuña de desviación. Otro método puede incluir el transporte de un ensamblaje de orificio de fondo a un pozo, el establecimiento de un ancla, luego la aplicación de presión a un mecanismo de liberación hidráulica, y después la aplicación de una fuerza a la fresadora, separando de esta manera una sección de la cuña de un resto de la cuña de desviación.

Conjunto de desvio com cabeça de fresadora de substituição para cunha de desvio de furo aberto

CONJUNTO DE DESVIO COM CABEÇA DE FRESADORA DE SUBSTITUIÇÃO PARA CUNHA DE DESVIO DE FURO ABERTO. Um conjunto de desvio para formar um furo de poço lateral inclui um dispositivo de corte tendo um corpo com uma passagem e uma cabeça de fresadora configurada para se conectar ao corpo, de modo que um interior da cabeça de fresadora e o corpo formem uma câmara de pressão em comunicação de fluido com a passagem de saída. A cabeça de fresadora inclui uma primeira porta em comunicação de fluido com a câmara de pressão, uma segunda porta em comunicação de fluido com a câmara de pressão, e uma lâmina disposta em uma face da cabeça de fresadora. Uma cunha de desvio conectada ao dispositivo de corte inclui uma tubulação tendo uma primeira extremidade inserida de forma removível na primeira porta e na passagem e uma segunda extremidade conectável a uma ferramenta de fundo de poço, uma superfície inclinada para guiar a fresadora em um ângulo diferente de zero em relação a um eixo geométrico central de um furo de poço existente, e uma seção de fixação conectando de forma removível o dispositivo de corte e a cunha de desvio.

Downhole casing pulling tool

A method and apparatus for cutting and pulling a casing string from a well. A downhole casing pulling tool includes a tubular housing having a bore therethrough, a packer assembly configured to isolate an annulus between a casing and the tool, a slip assembly configured to engage the casing, and a piston assembly disposed in the bore of the tubular housing. The piston assembly is configured to operate an actuator, wherein the actuator is configured to operate at least one of the packer assembly and the slip assembly and modify a fluid pressure in the bore of the tubular housing.

Sidetrack assembly with replacement mill head for open hole whipstock

A sidetrack assembly for forming a lateral wellbore includes a cutting device having a body having a passage, and a mill head configured to connect to the body so that an interior of the mill head and the body form a pressure chamber in fluid communication with the outlet passage. The mill head includes a first port in fluid communication with the pressure chamber, a second port in fluid communication with the pressure chamber, and a blade arranged on a face of the mill head. A whipstock connected to the cutting device includes a tubing having a first end removably inserted in the first port and the passage and a second end connectable to a downhole tool, an inclined surface for guiding the mill at a non-zero angle relative to a central axis of an existing wellbore, and an attachment section removably connecting the cutting device and the whipstock.

Sidetrack assembly with replacement mill head for open hole whipstock

A sidetrack assembly for forming a lateral wellbore includes a cutting device having a body having a passage, and a mill head configured to connect to the body so that an interior of the mill head and the body form a pressure chamber in fluid communication with the outlet passage. The mill head includes a first port in fluid communication with the pressure chamber, a second port in fluid communication with the pressure chamber, and a blade arranged on a face of the mill head. A whipstock connected to the cutting device includes a tubing having a first end removably inserted in the first port and the passage and a second end connectable to a downhole tool, an inclined surface for guiding the mill at a non-zero angle relative to a central axis of an existing wellbore, and an attachment section removably connecting the cutting device and the whipstock.

Sidetrack assembly with replacement mill head for open hole whipstock

A sidetrack assembly for forming a lateral wellbore includes a cutting device having a body having a passage, and a mill head configured to connect to the body so that an interior of the mill head and the body form a pressure chamber in fluid communication with the outlet passage. The mill head includes a first port in fluid communication with the pressure chamber, a second port in fluid communication with the pressure chamber, and a blade arranged on a face of the mill head. A whipstock connected to the cutting device includes a tubing having a first end removably inserted in the first port and the passage and a second end connectable to a downhole tool, an inclined surface for guiding the mill at a non-zero angle relative to a central axis of an existing wellbore, and an attachment section removably connecting the cutting device and the whipstock.

Sidetrack assembly with replacement mill head for open hole whipstock

A sidetrack assembly for forming a lateral wellbore includes a cutting device having a body having a passage, and a mill head configured to connect to the body so that an interior of the mill head and the body form a pressure chamber in fluid communication with the outlet passage. The mill head includes a first port in fluid communication with the pressure chamber, a second port in fluid communication with the pressure chamber, and a blade arranged on a face of the mill head. A whipstock connected to the cutting device includes a tubing having a first end removably inserted in the first port and the passage and a second end connectable to a downhole tool, an inclined surface for guiding the mill at a non-zero angle relative to a central axis of an existing wellbore, and an attachment section removably connecting the cutting device and the whipstock.

Sidetrack assembly with replacement mill head for open hole whipstock

A sidetrack assembly for forming a lateral wellbore includes a cutting device having a body having a passage, and a mill head configured to connect to the body so that an interior of the mill head and the body form a pressure chamber in fluid communication with the outlet passage. The mill head includes a first port in fluid communication with the pressure chamber, a second port in fluid communication with the pressure chamber, and a blade arranged on a face of the mill head. A whipstock connected to the cutting device includes a tubing having a first end removably inserted in the first port and the passage and a second end connectable to a downhole tool, an inclined surface for guiding the mill at a non-zero angle relative to a central axis of an existing wellbore, and an attachment section removably connecting the cutting device and the whipstock.

Dispositivo de corte

conjunto de desvio com cabeça de fresadora de substituição para cunha de desvio de furo aberto. um conjunto de desvio para formar um furo de poço lateral inclui um dispositivo de corte tendo um corpo com uma passagem e uma cabeça de fresadora configurada para se conectar ao corpo, de modo que um interior da cabeça de fresadora e o corpo formem uma câmara de pressão em comunicação de fluido com a passagem de saída. a cabeça de fresadora inclui uma primeira porta em comunicação de fluido com a câmara de pressão, uma segunda porta em comunicação de fluido com a câmara de pressão, e uma lâmina disposta em uma face da cabeça de fresadora. uma cunha de desvio conectada ao dispositivo de corte inclui uma tubulação tendo uma primeira extremidade inserida de forma removível na primeira porta e na passagem e uma segunda extremidade conectável a uma ferramenta de fundo de poço, uma superfície inclinada para guiar a fresadora em um ângulo diferente de zero em relação a um eixo geométrico central de um furo de poço existente, e uma seção de fixação conectando de forma removível o dispositivo de corte e a cunha de desvio.

Sealing apparatus and associated methods of manufacturing

A method of manufacturing a seal element can include depositing a seal element material from an instrument at a location of the seal element, and depositing another seal element material from the instrument at another location of the seal element, the seal element materials being different from each other. A sealing system can include a seal element, the seal element having at least one seal element material about at least one void in the seal element, the seal element material enclosing the void. Another sealing system can include a seal element, the seal element having multiple different seal element materials deposited at respective multiple different locations in the seal element. Properties or characteristics may gradually change or vary from one seal element material to another seal element material in the seal element. The seal element materials may each include the same basic matrix material.

Contingency release of mill from whipstock

A bottom hole assembly can include a mill and a whipstock having an upper end and an opening. A retractable pin extends from the mill into the opening. A section of the whipstock is separable from the whipstock in response to a force applied to the mill. The section is positioned between the opening and the upper end. A method can include positioning a bottom hole assembly in a well, the bottom hole assembly including a whipstock releasably secured to a mill, and then releasing the mill from the whipstock by separating a section of the whipstock from a remainder of the whipstock. Another method can include conveying a bottom hole assembly into a well, setting an anchor, then applying pressure to a hydraulic release mechanism, and then applying a force to the mill, thereby separating a section of the whipstock from a remainder of the whipstock.