A downhole tool deployment assembly with improved heater removability and methods of employing such

A downhole tool deployment assembly with improved heater removability and methods of employing such

A downhole tool deployment assembly having a heater with a tubular heater body 2 featuring an internal cavity configured to receive a heat source. A tubular heat conducting member 3 is configured to surround the tubular heater body leaving an annular clearance, wherein the tubular heat conducting member does not extend along the entire length of the tubular heater body. In addition, a collar 4 is mounted adjacent to the region of the assembly where the tubular heat conducting member ends. The collar is configured to prevent access to the annular clearance between the tubular heat conducting member and the tubular heater body. A eutectic/bismuth based alloy 5 covers the collar and at least a portion of the tubular heater body and the tubular heat conducting member such that the alloy holds the heater and the tubular heat conducting member together until the alloy is melted.

Percussion drilling assembly having a floating feed tube

A percussion drilling assembly for boring into the earth is disclosed. The percussion drilling assembly includes a top sub, a casing coupled to the top sub, and a feed tube assembly disposed within the top sub and the casing. The feed tube assembly includes a non-rigid coupling having a throughbore and a tubular body disposed therein. The tubular body is translatable in the radial position and/or rotatable relative to a longitudinal centerline extending through the non-rigid coupling.

APPARATUS AND METHOD FOR CONTROLLING OR LIMITING ROTOR ORBIT IN MOVING CAVITY MOTORS AND PUMPS

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator. 1. A method of drilling a wellbore through a subterranean formation , the method comprising: a stator and a rotor, wherein a surface of the stator is made of a flexible material to permit a seal to form between contacting surfaces of the rotor and the stator;', 'at least one apparatus disposed proximate at least one of the proximal end and the distal end, the at least one apparatus constraining the radial and/or tangential movement of the rotor relative to the stator; and, 'passing a drilling fluid through a mud motor assembly, the mud motor assembly comprising a moving or progressive cavity motor having a proximal end and a distal end, the motor comprisingdrilling the formation using a drill bit directly or indirectly coupled to the rotor.2. A mud motor assembly comprising a moving or progressive cavity motor having an inlet end and an outlet end , the motor comprising:a stator and a rotor, wherein a surface of the stator is made of a flexible material to permit a seal to form between contacting surfaces of the rotor and the stator;at least one apparatus disposed proximate at least one of the inlet end and the outlet end, the at least one apparatus constraining the radial and/or tangential movement of the rotor relative to the stator.3. The assembly of claim 2 , wherein the rotor comprises a shaft which extends beyond the stator proximate at least one of the inlet end and the outlet end or at least one of the proximal end and the distal end claim 2 , as appropriate claim 2 , the at least one apparatus being disposed on the shaft claim 2 , operative with the shaft claim 2 , or a combination thereof.4. The assembly of claim 2 , wherein the operative area of the at least one apparatus is concentric with the operative area of the rotor/stator pair.5. The assembly ...

Drilling and hole enlargement device

An expandable drilling apparatus is deployed upon a distal end of a drillstring and includes a cutting head and a substantially tubular main body adjacent the cutting head providing a plurality of axial recesses configured to receive arm assemblies configured to translate between a retracted and an extended position. A flow switch actuates the arm assemblies when a drilling fluid pressure exceeds an activation value and the drilling apparatus includes a biasing member to reset the arm assemblies when the drilling fluid pressure falls below a reset value.

APPARATUS AND METHOD FOR CONTROLLING OR LIMITING ROTOR ORBIT IN MOVING CAVITY MOTORS AND PUMPS

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.

Percussion drilling assembly having a floating feed tube

A percussion drilling assembly for boring into the earth is disclosed. The percussion drilling assembly includes a top sub, a casing coupled to the top sub, and a feed tube assembly disposed within the top sub and the casing. The feed tube assembly includes a non-rigid coupling having a throughbore and a tubular body disposed therein. The tubular body is translatable in the radial position and/or rotatable relative to a longitudinal centerline extending through the non-rigid coupling.

Percussion drilling assembly having a floating feed tube

A percussion drilling assembly for boring into the earth is disclosed. The percussion drilling assembly includes a top sub, a casing coupled to the top sub, and a feed tube assembly disposed within the top sub and the casing. The feed tube assembly includes a non-rigid coupling having a throughbore and a tubular body disposed therein. The tubular body is translatable in the radial position and/or rotatable relative to a longitudinal centerline extending through the non-rigid coupling.

Downhole tool deployment assembly with improved heater removability and methods of employing such

The present invention provides a downhole tool deployment assembly (1) for use in particular in oil/gas wells. The assembly comprises a heater (2) with a tubular heater body having an internal cavity configured to receive a heat source (6). The assembly also has a tubular heat conducting member (3) configured to surround the tubular heater body leaving an annular clearance, wherein the tubular heat conducting member does not extend along the entire length of the tubular heater body. In addition, a collar (4) is mounted adjacent to the region of the assembly where the tubular heat conducting member ends. The collar is configured to prevent access to the annular clearance between the tubular heat conducting member and the tubular heater body. A eutectic/bismuth based alloy (5) covers the collar and at least a portion of the tubular heater body and the tubular heat conducting member such that the alloy holds the heater and the tubular heat conducting member together until the alloy is melted ...

PERCUSSION DRILLING ASSEMBLY HAVING A FLOATING FEED TUBE

A percussion drilling assembly for boring into the earth is disclosed. The percussion drilling assembly includes a top sub, a casing coupled to the top sub, and a feed tube assembly disposed within the top sub and the casing. The feed tube assembly includes a non-rigid coupling having a throughbore and a tubular body disposed therein. The tubular body is translatable in the radial position and/or rotatable relative to a longitudinal centerline extending through the non-rigid coupling.

Downhole operations relating to open hole gravel packs and tools for use therein

The present invention provides a method of sealing a region of a sand screen of an Open Hole Gravel Pack without the need to perforate the sand screen and a tool for use in such. The tool being a eutectic/bismuth based alloy well plugging/sealing tool (1) having a tubular heater body (2) with an internal cavity (4) capable of receiving a chemical heat source (105). The tool is provided with a quantity of eutectic/bismuth based alloy (3) around an outer surface of the heater body (2) such that it can be heated by the chemical heat source (105). In addition the tool (1) has an insulating sleeve (7) provided around an outer surface of the alloy (3), wherein the sleeve (7) is configured to provide a focused egress for the alloy (3) as it is melted by the chemical heat source (105).

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.

DOWNHOLE OPERATIONS RELATING TO OPEN HOLE GRAVEL PACKS AND TOOLS FOR USE THEREIN

The present invention provides a method of sealing a region of a sand screen of an Open Hole Gravel Pack without the need to perforate the sand screen and a tool for use in such. The tool being a eutectic/bismuth based alloy well plugging/sealing tool ( 1 ) having a tubular heater body ( 2 ) with an internal cavity ( 4 ) capable of receiving a chemical heat source ( 105 ). The tool is provided with a quantity of eutectic/bismuth based alloy ( 3 ) around an outer surface of the heater body ( 2 ) such that it can be heated by the chemical heat source ( 105 ). In addition the tool ( 1 ) has an insulating sleeve ( 7 ) provided around an outer surface of the alloy ( 3 ), wherein the sleeve ( 7 ) is configured to provide a focused egress for the alloy ( 3 ) as it is melted by the chemical heat source ( 105 ).

Bit retainer system

A bit retainer system comprising a casing, a driver sub adapted to be disposed around a shank of a bit, and a bit retainer. The driver sub comprises a threaded connector, a threaded pin end configured to engage with the hammer case, and a stop. The bit retainer comprises a load carrying threaded connector configured to engage with the threaded connector of the driver sub, and a catch thread configured to retain the head of a bit to the system.

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.

A DOWNHOLE TOOL DEPLOYMENT ASSEMBLY WITH IMPROVED HEATER REMOVABILITY AND METHODS OF EMPLOYING SUCH

The present invention provides a downhole tool deployment assembly () for use in particular in oil/gas wells. The assembly comprises a heater () with a tubular heater body having an internal cavity configured to receive a heat source (). The assembly also has a tubular heat conducting member () configured to surround the tubular heater body leaving an annular clearance, wherein the tubular heat conducting member does not extend along the entire length of the tubular heater body. In addition, a collar () is mounted adjacent to the region of the assembly where the tubular heat conducting member ends. The collar is configured to prevent access to the annular clearance between the tubular heat conducting member and the tubular heater body. A eutectic/bismuth based alloy () covers the collar and at least a portion of the tubular heater body and the tubular heat conducting member such that the alloy holds the heater and the tubular heat conducting member together until the alloy is melted. 1. A downhole tool deployment assembly , said assembly comprising:a heater with a tubular heater body having an internal cavity configured to receive a heat source;a tubular heat conducting member configured to surround the tubular heater body leaving an annular clearance, wherein the tubular heat conducting member does not extend along the entire length of the tubular heater body;a collar mounted adjacent to the region of the assembly where the tubular heat conducting member ends, wherein the collar is configured to prevent access to the annular clearance between the tubular heat conducting member and the tubular heater body; andan eutectic/bismuth based alloy covering extending over the collar and at least a portion of the tubular heater body and the tubular heat conducting member, and whereby the alloy holds the heater and the tubular heat conducting member together until the alloy is melted.2. The assembly of claim 1 , wherein the collar is mounted on the tubular heater body.3. The ...

Secondary retainer for a downhole hammer bit

A bit retainer system is disclosed. The bit retainer system includes a bit having a head and a shank, a driver sub disposed around the shank of the bit and adapted to engage a hammer case, a bit retainer disposed around the shank of the bit and abutting an upper end of the driver sub, and a secondary retainer disposed around the bit retainer.

Steerable underreamer/stabilizer assembly and method

A bottom hole assembly includes a drill bit, a stabilized underreamer assembly located behind the drill bit, and a drilling assembly. A method to drill a formation includes positioning a stabilized underreamer assembly behind a drill bit, positioning a drilling assembly behind the stabilized underreamer assembly, and rotating the drill bit and stabilized underreamer assembly with the drilling assembly. A stabilized underreamer located between a directional drilling assembly and a drill bit includes at least one arm assembly extending from the stabilized underreamer assembly, wherein the arm assembly includes a stabilizer portion and an underreamer cutting structure.

PERCUSSION DRILL BIT AND METHOD OF DRILLING A BOREHOLE

A percussion drill bit includes a bit body having a central axis and a bit face. A plurality of inserts is disposed on the bit face. A plurality of gauge row inserts is disposed on a periphery of the bit face. At least some one of the plurality of gauge row inserts is enhanced with a super hard material and oriented on the periphery of the bit face at an angle between about 36 degrees and about 40 degrees relative to the central axis of the bit body.

A DOWNHOLE TOOL DEPLOYMENT ASSEMBLY WITH IMPROVED HEATER REMOVABILITY AND METHODS OF EMPLOYING SUCH

The present invention provides a downhole tool deployment assembly () for use in particular in oil/gas wells. The assembly comprises a heater () with a tubular heater body having an internal cavity configured to receive a heat source (). The assembly also has a tubular heat conducting member () configured to surround the tubular heater body leaving an annular clearance, wherein the tubular heat conducting member does not extend along the entire length of the tubular heater body. In addition, a collar () is mounted adjacent to the region of the assembly where the tubular heat conducting member ends. The collar is configured to prevent access to the annular clearance between the tubular heat conducting member and the tubular heater body. A eutectic/bismuth based alloy () covers the collar and at least a portion of the tubular heater body and the tubular heat conducting member such that the alloy holds the heater and the tubular heat conducting member together until the alloy is melted. 1. A downhole tool deployment assembly , said assembly comprising:a heater with a tubular heater body having an internal cavity configured to receive a heat source;a tubular heat conducting member configured to surround the tubular heater body leaving an annular clearance, wherein the tubular heat conducting member does not extend along the entire length of the tubular heater body;a collar mounted adjacent to the region of the assembly where the tubular heat conducting member ends, wherein the collar is configured to prevent access to the annular clearance between the tubular heat conducting member and the tubular heater body; andan eutectic/bismuth based alloy covering extending over the collar and at least a portion of the tubular heater body and the tubular heat conducting member, and whereby the alloy holds the heater and the tubular heat conducting member together until the alloy is melted.2. The assembly of claim 1 , wherein the collar is mounted on the tubular heater body.3. The ...

Internally profiled stator tube

A thick walled Moineau-style stator and method of manufacture are disclosed. The outer profile of the stator follows the inner helical profile of the stator. The application of an elastomeric layer to the inner profile of the stator results in a constant thickness for the elastomeric layer and proximity for the walls of the stator. This improves the durability of the motor because of lower heat generation and better heat dissipation. The stator walls also support the elastomeric layer. Further, the thick walls of the preferred stator eliminate the need for additional drill piping or other support provided adjacent the stator. Thus, the cost of additional piping and difficulties placing a stator inside drill pipe or drill string housing are eliminated. Further, the improved strength of thick wall steel when contrasted to a thin wall counterpart allows a higher operating pressure drop for a given stator length, resulting in a higher power output. Moreover, the undulating outer profile of ...

Flexible directional drilling apparatus and method

A bottom hole assembly to directionally drill a subterranean formation includes a drill bit, a stabilizer assembly located proximate to and behind the drill bit, a drilling assembly comprising a drive mechanism and a directional mechanism, and a flex member. Optionally, the flex member may be located between the drilling assembly and the stabilizer assembly or an integral to a housing of the drilling assembly. A method to drill a formation includes positioning a stabilizer assembly behind a drill bit and positioning a flex member between an output shaft of a drilling assembly and the stabilizer assembly. The method preferably includes rotating the drill bit, stabilizer assembly, and flex member with a drilling assembly and directing the trajectory of the drill bit and stabilizer assembly with a directional mechanism of the drilling assembly.

Apparatus And Method For Controlling Or Limiting Rotor Orbit In Moving Cavity Motors And Pumps

Techniques involve a motor assembly including a rotor and a stator. The stator includes a contact surface for contacting an outer surface of the rotor. The contact surface includes a rigid material. The motor assembly also includes at least one constraint disposed along a length of the motor assembly, where the constraint constrains a radial and/or tangential movement of the rotor relative to the stator. The at least one constraint may be disposed at one or more proximate ends of the motor assembly, and/or along the length of the motor assembly. The contact surface of the stator may have a profile including peaks and valleys, and in some embodiments, the contact surface may be treated to reduce friction and/or wear. 1. A motor assembly comprising:a rotor comprising;a stator comprising contact surface configured to contact an outer surface of the rotor, wherein the contact surface comprises a rigid material; andat least one constraint disposed along a length of the motor assembly, wherein the constraint is configured to constrain a radial movement of the rotor relative to the stator.2. The assembly of claim 1 , wherein the at least one constraint is disposed at a proximal end of the motor assembly.3. The assembly of claim 1 , wherein the at least one constraint comprises at least one constraint disposed at an inlet end of the motor assembly and at least one constraint disposed at an outlet end of the motor assembly.4. The assembly of claim 1 , wherein the at least one constraint comprises a plurality of constraints disposed along the length of the motor assembly.5. The assembly of claim 1 , wherein the rigid material of the stator contact surface comprises at least one of a metal claim 1 , a composite claim 1 , a ceramic claim 1 , a hard plastic claim 1 , and PCD.6. The assembly of claim 1 , wherein the stator has a profile comprising peak sections and valley sections claim 1 , and wherein the peak sections comprise the rigid material and the valley sections comprise ...

SNAP RINGED BIT RETAINER RING

A bit retainer system includes a bit having a head and a shank, a driver sub disposed around the shank of the bit and adapted to engage a hammer case, a bit retainer disposed around the shank of the bit and abutting an upper end of the driver sub, wherein the bit retainer includes a split ring with a circumferential groove, and a secondary retainer disposed around the bit retainer, wherein the secondary retainer includes a snap ring configured to engage the circumferential groove.

PLUG WITH COMPOSITE ENDS AND METHOD OF FORMING AND USING

A plug with composite reinforced end(s) and a mostly-bismuth-alloy middle section. At least one end comprises a composite material. One end is a composite, with a bismuth alloy and a particulate material of greater strength than the bismuth material. A plug having both ends of the composite material.

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

Techniques involve a motor assembly including a rotor and a stator. The stator includes a contact surface for contacting an outer surface of the rotor. The contact surface includes a rigid material. The motor assembly also includes at least one constraint disposed along a length of the motor assembly, where the constraint constrains a radial and/or tangential movement of the rotor relative to the stator. The at least one constraint may be disposed at one or more proximate ends of the motor assembly, and/or along the length of the motor assembly. The contact surface of the stator may have a profile including peaks and valleys, and in some embodiments, the contact surface may be treated to reduce friction and/or wear.

TWO-PHASE ISOLATION METHODS AND SYSTEMS FOR CONTROLLED DRILLING

There is provided a system and method for having multiple movable isolation zones within a borehole, to provide for zones having predetermined properties, such as pressure, flow or optical properties. These movable isolation zones provide advantages in downhole activities, such as, laser cutting and laser drilling to advance a borehole. 1. A method of advancing a borehole using a two-phase isolation drilling system , the method comprising:a. positioning a bottom hole assembly in association with a conveyance device in a borehole, the borehole having a sidewall surface, a bottom surface and a start, the conveyance device having an inflow path and a return path; i. an isolation means;', 'ii. a bit, and', 'iii. an inflow path and a return path;, 'b. the bottom hole assembly comprisingc. wherein, the bottom hole assembly inflow path is in fluid communication with the conveyance device inflow path and the bottom hole assembly return path is in fluid communication with the conveyance device return path;d. activating the isolation means into sealing engagement with the borehole sidewall surface, wherein the borehole is divided into a first and a second isolation zone, such that the second isolation zone includes the borehole bottom surface;e. filling the first isolation zone of the borehole with a first medium, such that a predetermined pressure on the borehole surfaces in the first isolation zone is maintained by the first medium;f. circulating a second medium through the input path of the conveyance device, the input path of the bottom hole assembly, through the bit, through the return path of the bottom hole assembly, and through the return path of the conveyance device; and,g. engaging the bit against a surface of the borehole and while apply a pressure to the bit, rotating the bit against the borehole surface;h. whereby, material is removed from the borehole surface and the removed borehole material is transported by the circulating second medium through the return ...

SYSTEMS AND CONVEYANCE STRUCTURES FOR HIGH POWER LONG DISTANCE LASER TRANSMISSION

There is provided a mobile high power laser system and conveyance structure for delivering high power laser energy to and for performing high power laser operations in remote and difficult to access locations. There is further provide such systems with high power laser, handling equipment and conveyance equipment that are configured to avoid exceeding the maximum bending radius of high power optical fibers used with the conveyance structures. There are also provided embodiments of the conveyance structures having channels, lines and passages for delivering materials such as fluids. 1. A mobile high power laser system comprising: a laser cabin , the laser cabin housing a high power laser system having the capability to general a laser beam having at least about 10 kW of power and a wavelength in the range of about 800 nm to about 2100 nm; a conveyance structure having a length of at least about 3 ,000 feet; the conveyance structure comprising: a high power optical fiber having a core diameter of at least about 500 μm and a length of at least about 3 ,000 ft , a first support structure having a length of at least about 3 ,000 feet , a second support structure having a length of at least about 3 ,000 feet , a data or control line having a length of at least about 3 ,000 feet , and a passage defined by the first or second support structure , the passage having a length of at least about 3 ,000 feet; and a means for handling the conveyance structure.2. The mobile high power laser system of claim 1 , wherein the means for handling comprises an injector.3. The mobile high power laser system of claim 1 , wherein the means for handling comprises a spool and an optical slip ring.4. The mobile high power laser system of claim 2 , comprising a second passage and wherein the line provides electric power.5. The mobile high power laser system of claim 1 , comprising an optical block.6. A mobile high power laser system comprising: a laser cabin claim 1 , the laser cabin housing a ...

CONTROL SYSTEM FOR HIGH POWER LASER DRILLING WORKOVER AND COMPLETION UNIT

There is provided a control, monitoring, and control and monitoring system for controlling and monitoring a high power laser system for performing high power laser operations and, in particular, for performing high power laser operation on, and in, remote and difficult to access locations. 1. A system for controlling , operating , or monitoring , a high power laser unit having a source of high power laser energy , a high power optical conveyance device , a high power laser tool , wherein the high power optical conveyance device provides optical communication for a laser beam from the high power laser energy source to be conveyed to the high power laser tool , the system comprising: i. a first monitoring device;', 'ii. a second monitoring device;', 'iii. wherein the first monitoring devices is positioned with respect to a location on the unit to detect laser energy;', 'iv. wherein the second monitoring device is positioned with respect to a location on the unit to detect the status of a component of the unit;', 'v. the first and second monitoring devices, in communication with a controller, wherein at least one of the monitoring devices can send a signal on the network; and,', 'vi. the controller is configured to act upon the signal from the monitoring device and performing a predetermined operation based upon the signal., 'a. a control network comprising2. The system of claim 1 , wherein the component is a laser tool and the signal indicates the failure of the laser tool and the operation is sending a signal to shut down the high power laser source.3. The system of claim 1 , wherein the signal is from the first or second monitoring device and the operation is to wait for a signal from the other monitoring device.4. The system of claim 1 , wherein the first monitoring device comprises a photo diode and the second monitoring device comprises a load cell.5. The system of claim 1 , wherein the component is a laser tool and the signal indicates the position of the tool.6 ...

HIGH POWER LASER-MECHANICAL DRILLING BIT AND METHODS OF USE

There is provided a high power laser-mechanical bit for use with a laser drilling system and a method for advancing a borehole. The laser-mechanical bit has a beam path and mechanical removal devices that provide for the removal of laser-affected rock to advance a borehole. 1. A flat bottom fixed cutter laser-mechanical bit comprising:a. a bottom section having a central axis, a width and a flat bottom end, wherein the bottom end is configured to engage a borehole surface;b. a beam path channel defined, in part, by a plurality of beam blades, wherein the beam path channel extends across the width of the flat bottom end of the bottom section and through the central axis;c. a plurality of cutter blades; and,d. the cutter blades and the beam blades each having a lower end;e. wherein, the lower ends are configured to be essentially coplanar, thereby defining the flat bottom end; and,f. whereby, the bit is capable of laser-mechanical drilling an essentially flat bottom borehole.2. The laser-mechanical bit of claim 1 , wherein the beam blades comprise a first and second pair of blades.3. The laser-mechanical bit of claim 1 , comprising a means for limiting the depth of cut.4. The laser-mechanical bit of claim 3 , wherein the means for limiting the depth of cut claim 3 , the beam blades and the cutter blades have substantially the same height.5. The laser-mechanical bit of claim 3 , the means for limiting the depth of cut has a greater height than the beam blades and the cutter blades.6. The laser-mechanical bit of claim 1 , wherein the bottom section width is at least about 6 inches; and the beam blades have a height of at least about ½ inch and a width of at least about 2¾ inches.7. The laser-mechanical bit of claim 3 , wherein the bottom section width is at least about 4 inches; and the beam blades have a height of at least about ¼ inch and a width of at least about 1¾ inches.8. The laser-mechanical bit of claim 1 , comprising a beam blade passage in fluid communication ...

Turbodrill Using a Balance Drum

A turbodrill using a balance drum. The turbodrill may include a housing having an upper end that is configured to be coupled to a drill string. The turbodrill may also include a rotatable shaft having a lower end configured to be coupled to a drill bit. The turbodrill may further include a balance drum assembly coupled to the shaft within the housing. In addition, the turbodrill may include a compliant mounting disposed between the balance drum assembly and the housing, where the compliant mounting is configured to allow displacement of the balance drum assembly within the housing. 1. A turbodrill , comprising:a housing having an upper end that is configured to be coupled to a drill string;a rotatable shaft having a lower end configured to be coupled to a drill bit;a balance drum assembly coupled to the shaft within the housing; anda compliant mounting disposed between the balance drum assembly and the housing, wherein the compliant mounting is configured to allow displacement of the balance drum assembly within the housing.2. The turbodrill of claim 1 , wherein the balance drum assembly comprises:a drum rotor coupled to the shaft, wherein the drum rotor is configured to rotate with the shaft; anda drum stator coupled to the drum rotor and comprising a cap, wherein the compliant mounting is disposed between the cap and the housing.3. The turbodrill of claim 2 , wherein an uphole end of the compliant mounting is coupled to a downhole end of the cap claim 2 , and wherein a downhole end of the compliant mounting is coupled to an inner shoulder of the housing.4. The turbodrill of claim 2 , wherein the compliant mounting is configured to resist rotation of the drum stator within the housing.5. The turbodrill of claim 1 , wherein the compliant mounting comprises a coil spring claim 1 , a Belleville spring claim 1 , a machine spring claim 1 , or a wave spring.6. The turbodrill of claim 1 , wherein the compliant mounting is configured to allow lateral displacement of the ...

U-Joint With High Torque Capacity And Improved Thrust Bearing Capacity

An assembly, apparatus, and method relate to a downhole motor drive shaft assembly drilling a subterranean wellbore. The assembly includes a drive shaft having a longitudinal rotational axis, a plurality of drive key sockets, an end housing having a longitudinal rotational axis, a plurality of circumferentially spaced axial keyways, and a concave spherical thrust bearing surface, and a drive key operatively connecting each drive key socket with a respective axial keyway for transferring torque from the drive shaft to the end housing. The drive key includes a substantially planar drive face slidably engaging the axial keyway, and a radiused, cylindrical back portion rotatably engaging the drive key socket, the substantially planar drive face and radiused, cylindrical back portion forming a nominal half-circle. 1. A downhole motor drive shaft assembly comprising:a drive shaft having a first end, a second end, a longitudinal rotational axis, and a thrust insert socket located proximate one of the first end and the second end;an end housing having a longitudinal rotational axis and a concave spherical thrust bearing surface;a thrust bearing insert disposed within the thrust insert socket and a convex spherical surface in mating engagement with the concave spherical thrust bearing surface of the end housing; anda mechanism for transferring torque from the drive shaft to the end housing, the mechanism for transferring torque configured to be operationally effective irrespective of any relative angular offset between the rotational axes of the drive shaft and the end housing over a selected angular range;the torque transferring mechanism comprising a plurality of drive keys with a planar front face and a cylindrical back face, the two faces forming a nominal half-circle;wherein the thrust bearing insert comprises a material selected from the group consisting of a copper-nickel-tin alloy, an iron-chromium-nickel-manganese-silicon alloy, a copper-beryllium alloy, a cobalt- ...

Ram accelerator augmented drilling system

Systems for drilling or tunneling include an assembly for accelerating a projectile into a region of geologic material. An interaction between the projectile and the geologic material extends a borehole and forms debris. The debris may be reduced in size by moving the debris to a crushing device. The reduced-size debris is then moved toward the surface using fluid movement. Water jets or other types of devices may be used to cut or deform a perimeter of a region of geologic material before the projectile is accelerated to control the shape of the borehole and the manner in which debris is broken from the geologic material.

METHOD OF MAKING NON-GALLING PARTS USING AMORPHOUS METAL SURFACES

Provided is a method for increasing anti-galling of parts using a coating material comprising an amorphous alloy. The parts may be a vehicle or machine component, for example, that are subject to frictional and sliding forces. The disclosed coating reduces galling and friction between surfaces, and increases the lift of such parts. 1. A method of increasing galling resistance of a substrate comprising coating a material over at least a portion of a surface of a substrate , wherein the coating material comprises an amorphous alloy.2. The method according to claim 1 , wherein the coating material withstands testing according to the ASTM G 98-02 standard.3. The method according to claim 1 , wherein the coating is performed using a thermal spray process.4. The method according to claim 1 , wherein the coating comprises utilizing at least one of: a flame spray claim 1 , electric arc wire spray claim 1 , plasma spray claim 1 , high velocity oxy-fuel spray claim 1 , high-velocity air-fuel spray claim 1 , cold spray claim 1 , welding claim 1 , or a cladding deposition process.5. The method according to claim 1 , wherein the substrate is a vehicle component or a machine component.6. The method according to claim 1 , wherein the substrate is at least a part of a piston ring claim 1 , a synchronizer ring claim 1 , a synchronizing assembly claim 1 , a shift fork claim 1 , a differential shaft claim 1 , a differential pin claim 1 , a transaxle assembly claim 1 , a differential assembly claim 1 , a fuel injector claim 1 , a cam follower claim 1 , a gear claim 1 , a valve claim 1 , a pump component claim 1 , and a lathe bedway.7. The method according to claim 1 , wherein the material is applied in the form of a layer over the surface of the substrate claim 1 , and wherein the layer has a thickness of between about 50 microns and about 1000 microns.8. The method according to claim 1 , wherein the material has a friction coefficient of about 0.1 or less.9. The method according to ...

Bearing/Gearing Section For A PDM Rotor/Stator

A moving or progressive cavity motor or pump is disclosed, the motor including a rotor and a stator, the stator having one or more inserts or gearing sections to limit a lateral movement of the rotor relative to the stator. In some embodiments, the motor or pump may include a rotor and a stator, the stator including: a first, helicoidal, section comprising a compliant material having a first compressibility; a second section, helicoidal, non-helicoidal, or combination thereof, having a second compressibility, wherein the second compressibility is less than the first compressibility. 1. A mud motor comprising a rotor and a stator , the stator having one or more inserts or gearing sections to limit a lateral movement of the rotor relative to the stator.2. A moving or progressive cavity motor or pump , comprising:a rotor; a first, helicoidal section comprising a compliant material having a first compressibility;', 'a second section, helicoidal, non-helicoidal, or combination thereof, having a second compressibility, wherein the second compressibility is less than the first compressibility., 'a stator comprising3. The motor or pump of claim 2 , wherein the first section comprises a rubber and the second section comprises at least one of a second rubber claim 2 , a metal claim 2 , a composite claim 2 , and a ceramic.4. The motor or pump of claim 3 , wherein the second section has low to zero interference with the rotor during operation of the motor or pump.5. The motor or pump of claim 2 , wherein the first section and second section form a continuous helical profile.6. The motor or pump of claim 5 , wherein an inner surface of the second section has the same profile as an inner surface of the first section.7. The motor or pump of claim 6 , wherein an inner surface of the second section has a reduced profile with respect to an inner surface of the first section.8. The motor or pump of claim 2 , wherein the stator comprises a second section proximate a distal end of the ...

Positive Displacement Motor With Radially Constrained Rotor Catch

Techniques relate to a moving cavity motor or pump, such as a mud motor, including a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator, where the apparatus for constraining is operable with the rotor catch. The motor may include a top sub, power section having a progressive cavity motor with a stator and rotor, a rotor catch, and an apparatus between a proximal and distal end of the rotor catch shaft. The apparatus may constrain the radial and/or tangential movement of the rotor catch shaft and the rotor. 1. A mud motor assembly , comprising:a top sub comprising a shoulder having a first inner diameter proximate a distal end of the top sub;a power section comprising a progressive cavity motor comprising a stator and a rotor configured to rotate when a drilling fluid is passed through the motor, the stator and rotor each having a proximal end and a distal end, wherein a proximal end of the power section is coupled to the distal end of the top sub; wherein the distal end of the shaft is coupled directly or indirectly to a proximal end of the rotor;', 'wherein the shaft extends from the distal end of the rotor catch into the top sub a distance past the shoulder, wherein at least the portion of the shaft extending past the shoulder has an outer diameter less than the first inner diameter of the shoulder; and', 'wherein the proximal end of the shaft has an effective outer diameter greater than the first inner diameter and/or is coupled to a rotor catch assembly comprising one or more components having an effective outer diameter greater than the first inner diameter; and, 'a rotor catch comprising a shaft having a proximal end and a distal end, and rotating via transmission of the rotor motion;'}at least one apparatus disposed intermediate the proximal and distal end of the rotor catch shaft, the at least one apparatus configured to constrain the radial and/or tangential movement ...

LOCKING CLUTCH FOR DOWNHOLE MOTOR

A locking clutch to selectively transmit torque from a stator of a downhole tool to a rotor of the downhole tool includes at least one locking pawl disposed upon the rotor, wherein the at least one locking pawl comprises a load path, at least one pivot axis, and a mass center, wherein the at least one locking pawl is biased into an engaged position by a biasing mechanism, wherein the at least one locking pawl transmits force from the stator to the rotor along the load path when in the engaged position, and wherein centrifugal force urges the at least one locking pawl into a disengaged position when the rotor is rotated above a disengagement speed. 1. A locking clutch for a downhole motor , comprising:a carrier configured to selectively couple a rotor and a stator; and an engaged position in which the at least one locking pawl transmits force from the stator to the rotor and rotates about a first pivot axis; and', 'a disengaged position in which the rotor is rotatable independent of the stator and rotates about a second pivot axis., 'at least one locking pawl circumferentially disposed about the carrier, the at least one locking pawl being configured to change between2. The locking clutch of claim 1 , further comprising:at least one biasing mechanism configured to bias the at least one locking pawl into the engaged position.3. The locking clutch of claim 1 , the at least one locking pawl being configured to be in the disengaged position when the rotor is rotated at or above a disengagement speed.4. The locking clutch of claim 1 , the first pivot axis being located at a line of contact between a leading edge of the at least one locking pawl and the rotor.5. The locking clutch of claim 4 , the leading edge of the at least one locking pawl being located in a recess of the rotor when the at least one locking pawl is in the engaged position.6. The locking clutch of claim 1 , the at least one locking pawl including a trailing edge configured to engage the stator when the ...

FLOW RESTRICTOR FOR A MUD MOTOR

An assembly to restrict fluid flow through the bearing section of a positive displacement or progressive cavity pump or motor. The assembly fits within the bearing chamber and includes an upper ring member, a lower ring member, an outer ring member and a floating member. The floating ring member is axially disposed between the upper and lower ring members. The floating ring member is also disposed at least partially around a drive shaft and is radially movable and constrained inwardly of the outer ring member. The floating ring member has a radial clearance between the drive shaft and a floating ring member inner surface with the radial clearance varying depending on the relative position of the floating ring member to the outer ring member. 1. An assembly to restrict fluid flow through a bearing section , the assembly comprising:an upper ring member having an upper ring member inner surface, the upper ring member arranged and designed to be disposed at least partially around a drive shaft and within an annulus between the drive shaft and a housing, the upper ring member having an inner diameter permitting a radial clearance between the drive shaft and the upper ring member inner surface,a lower ring member having a lower ring member inner surface, the lower ring member arranged and designed to be disposed at least partially around the drive shaft and within the annulus between the drive shaft and the housing, the lower ring member having an inner diameter permitting a radial clearance between the drive shaft and the lower ring member inner surface,an outer ring member disposed at least partially around the drive shaft and axially between the upper and lower ring members, anda floating ring member axially disposed between the upper and lower ring members, the floating ring member disposed at least partially around the drive shaft and being radially movable and constrained inwardly of the outer ring member, the floating ring member having a radial clearance between ...

DIE CASTING SYSTEM FOR AMORPHOUS ALLOYS

Provided is a system and method for metering an amount of molten amorphous alloy into a mold cavity of an injection system. A melting chamber in the system is heated to or above a solidus temperature of the alloy to form a hot chamber. Both the chamber and mold are maintained in an inert atmosphere. The molten alloy is metered from the chamber using a valve system and injected into the mold cavity for molding into a part. A feed tube may extend from the hot chamber to the valve system. The valve system may use gravity or pressure from a pump to meter a volume of molten alloy. In another case, the valve system may include a plunger and a shot sleeve for injecting alloy into the mold. In one embodiment, the plunger itself meters a volume of the alloy. The shot sleeve and plunger may optionally be heated. 1. A method comprising:providing an amorphous alloy to a melting chamber in an injection system, the injection system also comprising a mold cavity for molding the alloy, and the melting chamber and the mold cavity being maintained in an inert atmosphere;heating the melting chamber to or above a solidus temperature of the amorphous alloy to form a hot chamber;melting the amorphous alloy within the hot chamber to form molten alloy;supplying the molten alloy from the hot chamber to the mold cavity using a valve system; andmolding the molten alloy into a molded part using the mold cavity,wherein the valve system is configured to inject a metered amount of the molten alloy into the mold cavity.2. The method of claim 1 , wherein the injection system further comprises a feed tube extending from the hot chamber to the valve system claim 1 , and wherein the method further comprises supplying the molten alloy from the hot chamber to the feed tube claim 1 , and supplying the metered amount of the molten alloy from the feed tube into the mold cavity.3. The method of claim 1 , wherein the valve system comprises a plunger housed in a shot sleeve claim 1 , and wherein the method ...

SYSTEMS AND CONVEYANCE STRUCTURES FOR HIGH POWER LONG DISTANCE LASER TRANSMISSION

There is provided a mobile high power laser system and conveyance structure for delivering high power laser energy to and for performing high power laser operations in remote and difficult to access locations. There is further provide such systems with high power laser, handling equipment and conveyance equipment that are configured to avoid exceeding the maximum bending radius of high power optical fibers used with the conveyance structures. There are also provided embodiments of the conveyance structures having channels, lines and passages for delivering materials such as fluids. 1: A mobile high power laser system comprising:a laser cabin, the laser cabin housing a high power laser system having the capability to generate a laser beam having at least about 10 kW of power and a wavelength in the range of about 800 nm to about 2100 nm;a conveyance structure having a length of at least about 3,000 feet; 'a high power optical fiber having a core diameter of at least about 500 )lm and a length of at least about 3,000 ft, a first support structure having a length of at least about 3,000 feet, a second support structure having a length of at least about 3,000 feet, a data or control line having a length of at least about 3,000 feet, and a passage defined by the first or second support structure, the passage having a length of at least about 3,000 feet; and a means for handling the conveyance structure.', 'the conveyance structure comprising2: The mobile high power laser system of claim 1 , wherein the means for handling comprises an injector.3: The mobile high power laser system of claim 1 , wherein the means for handling comprises a spool and an optical slip ring.4: The mobile high power laser system of claim 2 , comprising a second passage and wherein the line provides electric power.5: The mobile high power laser system of claim 1 , comprising an optical block.6: A mobile high power laser system comprising:a laser cabin, the laser cabin housing a high power laser ...

Positive Displacement Motor With Radially Constrained Rotor Catch

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator, where the apparatus for constraining is operable with the rotor catch. 1. A mud motor assembly , comprising:a top sub comprising a shoulder having a first inner diameter proximate a distal end of the top sub;a power section comprising a progressive cavity motor comprising a stator and a rotor configured to rotate eccentrically when a drilling fluid is passed through the motor, the stator and rotor each having a proximal end and a distal end, wherein a proximal end of the power section is coupled to the distal end of the top sub; wherein the distal end of the shaft is coupled directly or indirectly to a proximal end of the rotor;', 'wherein the shaft extends from the distal end of the rotor catch into the top sub a distance past the shoulder, wherein at least the portion of the shaft extending past the shoulder has an outer diameter less than the first inner diameter of the shoulder;', 'wherein the proximal end of the shaft has an effective outer diameter greater than the first inner diameter and/or is coupled to a rotor catch assembly comprising one or more components having an effective outer diameter greater than the first inner diameter;, 'a rotor catch comprising a shaft having a proximal end and a distal end, and rotating eccentrically via transmission of the eccentric rotor motion;'}at least one apparatus disposed intermediate the proximal and distal end of the rotor catch shaft, the at least one apparatus configured to constrain the radial and/or tangential movement of the rotor catch shaft and by transmission via the shaft to constrain the radial and/or tangential movement of the rotor.2. A drilling assembly , comprising:a mud motor assembly comprising a top sub and a power section;the top sub comprising a shoulder having a first inner diameter proximate ...

OILFIELD LASER OPERATIONS USING HIGH POWER LONG DISTANCE LASER TRANSMISSION SYSTEMS

There is provided a mobile high power laser system and conveyance structure for delivering high power laser energy to and for performing high power laser operations in remote and difficult to access locations. There is further provide such systems with high power laser, handling equipment and conveyance equipment that are configured to avoid exceeding the maximum bending radius of high power optical fibers used with the conveyance structures. There are also provided embodiments of the conveyance structures having channels, lines and passages for delivering materials such as fluids. 1132-. (canceled)133. A method of performing a high power laser operation in an oil or gas field using a mobile high power laser system configured for and capable of performing oil or gas field laser operations , the method comprising:a. delivering a laser beam, comprising a power of not less than 10 kW and having a wavelength in the range of about 800 nm to about 2100 nm, from a mobile high power laser system to perform a laser operation in an oil or gas field; i. a laser cabin, the laser cabin housing a high power laser capable of generating the laser beam;', 'ii. a conveyance structure having a length of not less than about 0.5 km; wherein, the conveyance structure comprising: a high power optical transmission fiber, for transmitting the laser beam from the laser; a core having a diameter of not less than about 300 μm and having a length of not less than about 0.5 km, a first support structure having a length of not less than 0.5 km; a second support structure having a length of not less than about 0.5 km; a data or control line having a length of not less than about 0.5 km; and a passage defined by both the first and second support structures, the passage having a length of not less than about 0.5 km; and,', 'iii. a means for handling the conveyance structure., 'b. the mobile high power laser system comprising134. The method of claim 133 , wherein the laser operation comprises a ...

Combined Well Plug/Chemical Heather Assemblies for Use in Down-Hole Operations and Associated Heater Cartridges

The present invention provides a cartridge () for a chemical heater used in down-hole operations. The cartridge () comprises a quantity of a chemical reaction heat source () wrapped in a temporary coating () that is capable of maintaining the shape of the cartridge () prior to use but which is consumed during the burn of the heater. The present invention also provides a eutectic/bismuth based alloy well plugging/sealing tool (). The tool () having a tubular heater body () with an internal cavity () capable of receiving a chemical heat source and a quantity of eutectic/bismuth based alloy () provided in thermal communication with the heater body () around an outer surface of the heater body (). The tool has a sleeve () provided around an outer surface of the alloy (), which insulates and/or mechanically protects the alloy () down-hole. In this way the sleeve () enables the diameter of tool () to be reduced whilst maintaining its functionality. In further aspect, the present invention also discloses the provision of a refractory lining () on the inner walls of the tubular heater body of chemical heaters, such as the heater () used in the eutectic/bismuth based alloy well plugging/sealing tool (). 1. A eutectic/bismuth based alloy well plugging/sealing tool , said tool comprising:a tubular heater body with an internal cavity capable of receiving a chemical heat source;a quantity of eutectic/bismuth based alloy provided in thermal communication with the heater body around an outer surface of the heater body; anda sleeve provided around an outer surface of the alloy.2. The well tool of claim 1 , wherein the tubular heater body claim 1 , the alloy and the sleeve are arranged co-axially to one another.3. The well tool of claim 1 , wherein the tubular heater body and the sleeve define an annular space within which at least a portion of the alloy is enclosed.4. The well tool of claim 3 , wherein the annular space further contains a spacer element with a greater structural ...

Inline bladder-type accumulator for downhole applications

An accumulator comprises a housing connected to a hydraulic system, an elastomeric bladder separating a gas compartment from a fluid compartment, and an anti-extrusion device. A method for operating an accumulator comprises connecting the accumulator to a hydraulic system, injecting an inert gas into a gas compartment to a precharge pressure, moving an anti-extrusion device to prevent a bladder from extruding into the hydraulic system, running the accumulator and the hydraulic system downhole, moving the anti-extrusion device to allow fluid communication between the hydraulic system and a fluid compartment, generating pressure fluctuations within the hydraulic system, and expanding or contracting the bladder in response to the pressure fluctuations without moving the anti-extrusion device. A method of improving fluid hammer performance comprises connecting the fluid hammer to an accumulator that produces a greater delivered horsepower from the fluid hammer as compared to a baseline horsepower when operating without the accumulator.

Method and apparatus for automatic closed loop drilling system

An automatic closed loop drilling system is disclosed for providing automatic directional drilling capabilities in a bottomhole assembly. The drilling system includes at least one adjustable stabilizer that varies in response to formational and drilling conditions encountered downhole. A microcontroller is preprogrammed with a desired range of formation characteristics or with a desired inclination or target area. The microcontroller compares actual sensed data with the desired data and adjusts the position of the stabilizer blades to vary the direction of drilling.

A downhole tool deployment assembly with improved heater removability and methods of employing such

The present invention provides a downhole tool deployment assembly (1) for use in particular in oil/gas wells. The assembly comprises a heater (2) with a tubular heater body having an internal cavity configured to receive a heat source (6). The assembly also has a tubular heat conducting member (3) configured to surround the tubular heater body leaving an annular clearance, wherein the tubular heat conducting member does not extend along the entire length of the tubular heater body. In addition, a collar (4) is mounted adjacent to the region of the assembly where the tubular heat conducting member ends. The collar is configured to prevent access to the annular clearance between the tubular heat conducting member and the tubular heater body. A eutectic/bismuth based alloy (5) covers the collar and at least a portion of the tubular heater body and the tubular heat conducting member such that the alloy holds the heater and the tubular heat conducting member together until the alloy is melted.

Laser assisted blowout preventer and methods of use

There is provided a high power laser assisted blowout preventer and methods of use. In particular, there are provided systems and assemblies for utilizing high power laser energy within a blowout preventer to cut tubulars that are present within the bore of the blowout prevent, reducing the risk that such tubulars will inhibit the ability of the blowout preventer to seal a well.

Combined well plug/chemical heater assemblies for use in down-hole operations and associated heater cartridges

The present invention provides a cartridge (1) for a chemical heater used in down-hole operations. The cartridge (1) comprises a quantity of a chemical reaction heat source (2) wrapped in a temporary coating (3) that is capable of maintaining the shape of the cartridge (1) prior to use but which is consumed during the burn of the heater. The present invention also provides a eutectic/bismuth based alloy well plugging/sealing tool (5). The tool (5) having a tubular heater body (6) with an internal cavity (8) capable of receiving a chemical heat source and a quantity of eutectic/bismuth based alloy (7) provided in thermal communication with the heater body (6) around an outer surface of the heater body (6). The tool has a sleeve (10) provided around an outer surface of the alloy (7), which insulates and/or mechanically protects the alloy (7) down-hole. In this way the sleeve (10) enables the diameter of tool (5) to be reduced whilst maintaining its functionality. In further aspect, the present invention also discloses the provision of a refractory lining (20) on the inner walls of the tubular heater body of chemical heaters, such as the heater (6) used in the eutectic/bismuth based alloy well plugging/sealing tool (5).

Bearing / gearing section for a pdm rotor / stator

Drilling and hole enlargement device

An expandable drilling apparatus is deployed upon a distal end of a drillstring and includes a cutting head and a substantially tubular main body adjacent the cutting head providing a plurality of axial recesses configured to receive arm assemblies configured to translate between a retracted and an extended position. A flow switch actuates the arm assemblies when a drilling fluid pressure exceeds an activation value and the drilling apparatus includes a biasing meinber to reset the arm assemblies when the drilling fluid pressure falls below a reset value.

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps, such as mud motors

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.

Internally profiled stator tube

A thick walled Moineau-style stator (320) and method of manufacture are disclosed. The outer profile (355) of the stator follows the inner helical profile (353) of the stator. The application of an elastomeric layer (330) to the inner profile of the stator results in a constant thickness for the elastomeric layer and proximity for the walls of the stator. This improves the durability of the motor because of lower heat generation and better heat dissipation. The stator walls also support the elastomeric layer. Further, the thick walls of the preferred stator eliminate the need for additional drill piping or other support provided adjacent the stator. Thus, the cost of additional piping and difficulties placing a stator inside drill pipe or drill string housing are eliminated. Further, the improved strength of thick wall steel when contrasted to a thin wall counterpart allows a higher operating pressure drop for a given stator length, resulting in a higher power output. Moreover, the undulating outer profile of the stator provides a distinctive appearance to the stator piping.

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

Method and apparatus for automatic closed loop drilling system

An automatic closed loop drilling system is disclosed for providing automatic directional drilling capabilities in a bottomhole assembly. The drilling system includes at least one adjustable stabilizer that varies in response to formational and drilling conditions encountered downhole. A microcontroller is preprogrammed with a desired range of formation characteristics or with a desired inclination or target area. The microcontroller compares actual sensed data with the desired data and adjusts the position of the stabilizer blades to vary the direction of drilling.

Die casting system for amorphous alloys

Provided is a system and method for metering an amount of molten amorphous alloy into a mold cavity of an injection system. A melting chamber in the system is heated to or above a solidus temperature of the alloy to form a hot chamber. Both the chamber and mold are maintained in an inert atmosphere. The molten alloy is metered from the chamber using a valve system and injected into the mold cavity for molding into a part. A feed tube may extend from the hot chamber to the valve system. The valve system may use gravity or pressure from a pump to meter a volume of molten alloy. In another case, the valve system may include a plunger and a shot sleeve for injecting alloy into the mold. In one embodiment, the plunger itself meters a volume of the alloy. The shot sleeve and plunger may optionally be heated.

Internally profiled stator tube

Systems and conveyance structures for high power long distance laster transmission

Flexible directional drilling apparatus and method

A bottom hole assembly to directionally drill a subterranean formation includes a drill bit, a stabilizer assembly located proximate to and behind the drill bit, a drilling assembly comprising a drive mechanism and a directional mechanism, and a flex member. Optionally, the flex member may be located between the drilling assembly and the stabilizer assembly or an integral to a housing of the drilling assembly. A method to drill a formation includes positioning a stabilizer assembly behind a drill bit and positioning a flex member between an output shaft of a drilling assembly and the stabilizer assembly. The method preferably includes rotating the drill bit, stabilizer assembly, and flex member with a drilling assembly and directing the trajectory of the drill bit and stabilizer assembly with a directional mechanism of the drilling assembly.

Flexible directional drilling

A bottom hole assembly 100 to directionally drill a subterranean formation includes a drill bit 106, a stabilizer assembly 108 located proximate to and behind the drill bit, a drilling assembly 112 comprising a drive mechanism 114 and a directional mechanism 116, and a flex member 110. Optionally, the flex member may be located between the drilling assembly and the stabilizer assembly or an integral to a housing of the drilling assembly. A method to drill a formation includes positioning a stabilizer assembly behind a drill bit and positioning a flex member between an output shaft of a drilling assembly and the stabilizer assembly. The method preferably includes rotating the drill bit, stabilizer assembly, and flex member with a drilling assembly and directing the trajectory of the drill bit and stabilizer assembly with a directional mechanism of the drilling assembly.

A stabilized underreamer assembly used in directional drilling

A bottom hole assembly 400 includes a drill bit 406, a stabilized underreamer assembly 408 located between the drill bit, and a drilling assembly 410, the drilling assembly comprises a drive mechanism 412 and a directional mechanism 414. A method to drill a formation includes positioning a stabilized underreamer assembly behind a drill bit, positioning a drilling assembly behind the stabilized underreamer assembly, and rotating the drill bit and stabilized underreamer assembly with the drilling assembly. The stabilized underreamer at least one arm assembly 418 extending from the stabilized underreamer assembly, wherein the arm assembly includes a stabilizer portion 422 and an underreamer cutting structure 420.

Locking clutch for downhole motor

Internally profiled stator tube

A thick walled Moineau-style stator (320) and method of manufacture are disclosed. The outer profile (355) of the stator follows the inner helical profile (353) of the stator. The application of an elastomeric layer (330) to the inner profile of the stator results in a constant thickness for the elastomeric layer and proximity for the walls of the stator. This improves the durability of the motor because of lower heat generation and better heat dissipation. The stator walls also support the elastomeric layer. Further, the thick walls of the preferred stator eliminate the need for additional drill piping or other support provided adjacent the stator. Thus, the cost of additional piping and difficulties placing a stator inside drill pipe or drill string housing are eliminated. Further, the improved strength of thick wall steel when contrasted to a thin wall counterpart allows a higher operating pressure drop for a given stator length, resulting in a higher power output. Moreover, the undulating outer profile of the stator provides a distinctive appearance to the stator piping.

Systems and conveyance structures for high power long distance laser transmission

There is provided a mobile high power laser system and conveyance structure for delivering high power laser energy to and for performing high power laser operations in remote and difficult to access locations. There is further provide such systems with high power laser, handling equipment and conveyance equipment that are configured to avoid exceeding the maximum bending radius of high power optical fibers used with the conveyance structures. There are also provided embodiments of the conveyance structures having channels, lines and passages for delivering materials such as fluids.

Locking clutch for downhole motor

A locking clutch (200) to selectively transmit torque from a stator (204) of a downhole tool to a rotor (202) of the downhole tool (201) includes at least one locking pawl (208) disposed upon the rotor (202), wherein the at least one locking pawl comprises a load path, a pivot axis, and a mass center, wherein the at least one locking pawl (208) is biased into an engaged position by a biasing mechanism (214), wherein the at least one locking pawl (208) transmits force from the stator (204) to the rotor (202) along the load path when in the engaged position, and wherein centrifugal force urges the at least one locking pawl (208) into a disengaged position when the rotor (202) is rotated above a disengagement speed.

Undercut stator for a positive displacement motor

Combined well plug/chemical heater assemblies for use in down-hole operations and associated heater cartridges

The present invention provides a cartridge (1) for a chemical heater used m down-hole operations. The cartridge (1) comprises a quantity of a chemical reaction heat source (2) wrapped in a temporary coating (3) that is capable of maintaining the shape of the cartridge (1) prior to use but which is consumed during the burn of the heater. The present invention also provides a eutectic/bismuth based alloy well plugging/sealing tool (5). The tool (5) having a tubular heater body (6) with an internal cavity (8) capable of receiving a chemical heat source and a quantity of eutectic/bismuth based alloy (7) provided in thermal communication with the heater body (6) around an outer surface of the heater body (6). The tool has a sleeve (10) provided around an outer surface of the alloy (7), which insulates and/or mechanically protects the alloy (7) down-hole. In this way the sleeve (10) enables the diameter of tool (5) to be reduced whilst maintaining its functionality. In further aspect, the present invention also discloses the provision of a refractory lining (20) on the inner walls of the tubular heater body of chemical heaters, such as the heater (6) used in the eutectic/bismuth based alloy well plugging/sealing tool (5).

Drilling and hole enlargement device

An expandable drilling apparatus is deployed upon a distal end of a drillstring, and includes a cutting head and a substantially tubular main body adjacent the cutting head providing a plurality of axial recesses configured to receive arm assemblies configured to translate between a retracted and an extended position. A flow switch actuates the arm assemblies when a drilling fluid pressure exceeds an activation value and the drilling apparatus includes a biasing member to reset the arm assemblies when the drilling fluid pressure falls below a reset value.

Drilling and hole enlargement device

An expandable drilling apparatus is deployed upon a distal end of a drillstring, and includes a cutting head and a substantially tubular main body adjacent the cutting head providing a plurality of axial recesses configured to receive arm assemblies configured to translate between a retracted and an extended position. A flow switch actuates the arm assemblies when a drilling fluid pressure exceeds an activation value and the drilling apparatus includes a biasing member to reset the arm assemblies when the drilling fluid pressure falls below a reset value.

Method and apparatus for adjusting the position of stabilizer blades

A telemetering system is disclosed for communicating command signals to a downhole adjustable blade stabilizer, and for transmitting encoded time/pressure signals back to the surface. The command signal provides information regarding a desired blade position for an adjustable blade stabilizer. The stabilizer sets a positioning piston in response to the command signal to limit the extent of blade expansion. A measuring means is provided in association with the positioning piston to measure precisely the position of the blades. An encoded signal is generated in response to the measurement and is transmitted to the surface in a combined time/pressure format to uniquely identify the position of the blades.

Ram accelerator augmented drilling system

Systems for drilling or tunneling include an assembly for accelerating a projectile into a region of geologic material. An interaction between the projectile and the geologic material extends a borehole and forms debris. The debris may be reduced in size by moving the debris to a crushing device. The reduced-size debris is then moved toward the surface using fluid movement. Water jets or other types of devices may be used to cut or deform a perimeter of a region of geologic material before the projectile is accelerated to control the shape of the borehole and the manner in which debris is broken from the geologic material.

Adjustable stabilizer

A downhole adjustable blade stabilizer is disclosed for varying the position of stabilizer blades to provide an increased ability to control the direction of drilling. The adjustable blade stabilizer includes a plurality of blades mounted in an angled track to permit axial and radial movement of the blades. The blades are driven by a piston in response to a pressure differential created by a sufficient flow of drilling mud through the stabilizer. The stabilizer blades are retracted by a spring when the pressure differential is eliminated. A positioning piston limits blade extension to a desired position. The positioning piston moves in response to a command signal, and remains in place until a new command signal is received. By maintaining the positioning piston in a locked position, the position of the blades can be reset to the prior position after the loss of pressure differential. A measuring means is provided in association with the positioning piston to enable precise measurement of blade position.

Projectile drilling system

Geologic material in a borehole is weakened by accelerating a projectile into contact with the material. A drill bit is then used to bore through the weakened material. To accelerate the projectile, an endcap is placed in a conduit using a source of gas. The endcap isolates the conduit from the external environment. A projectile is then positioned in the conduit above the endcap. Movable members within the conduit are operated in sequence to enable single endcaps and projectiles to be moved into the conduit. Gas from the conduit is evacuated into an annulus between the conduit and a surrounding conduit, and a propellant material is provided into the conduit. The propellant material applies a force to the projectile to accelerate the projectile into contact with the geologic material. A fluid is circulated down a second annulus outside of the surrounding conduit to contact the drill bit and remove debris.

Method of making an internally profiled stator tube

A method of manufacturing a thick walled Moineau-style stator entails drawing a thick walled tube through rotatable internal and external dies to form a helical outer profile including crests and through on the tube. The tube initially has one end with a diameter smaller than the others, with the smaller diameter end being inserted between the inner and outer dies, where it is seized and drawn through the dies.

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps, such as mud motors

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.

Borehulsoperationer vedrørende grusfilter med åbent hul og værktøj til anvendelse deri

Plug with composite ends and method of forming and using

A plug with composite reinforced end(s) and a mostly-bismuth-alloy middle section. At least one end comprises a composite material. One end is a composite, with a bismuth alloy and a particulate material of greater strength than the bismuth material. A plug having both ends of the composite material.

Downhole operations relating to open hole gravel packs and tools for use therein

A downhole tool deployment assembly with improved heater removability and methods of employing such

Projectile drilling system

Geologic material in a borehole is weakened by accelerating a projectile into contact with the material. A drill bit is then used to bore through the weakened material. To accelerate the projectile, an endcap is placed in a conduit using a source of gas. The endcap isolates the conduit from the external environment. A projectile is then positioned in the conduit above the endcap. Movable members within the conduit are operated in sequence to enable single endcaps and projectiles to be moved into the conduit. Gas from the conduit is evacuated into an annulus between the conduit and a surrounding conduit, and a propellant material is provided into the conduit. The propellant material applies a force to the projectile to accelerate the projectile into contact with the geologic material. A fluid is circulated down a second annulus outside of the surrounding conduit to contact the drill bit and remove debris.

Projectile drilling system

Geologic material in a borehole is weakened by accelerating a projectile into contact with the material. A drill bit is then used to bore through the weakened material. To accelerate the projectile, an endcap is placed in a conduit using a source of gas. The endcap isolates the conduit from the external environment. A projectile is then positioned in the conduit above the endcap. Movable members within the conduit are operated in sequence to enable single endcaps and projectiles to be moved into the conduit. Gas from the conduit is evacuated into an annulus between the conduit and a surrounding conduit, and a propellant material is provided into the conduit. The propellant material applies a force to the projectile to accelerate the projectile into contact with the geologic material. A fluid is circulated down a second annulus outside of the surrounding conduit to contact the drill bit and remove debris.

Borehulsværktøjsudrulningsanordning med forbedret mulighed for fjernelse af varmeanordning og fremgangsmåder til anvendelse heraf

Projectile drilling system

Systems for drilling or tunneling include an assembly for accelerating a projectile through a first conduit into a region of geologic material, which generates debris. The debris may be reduced in size by moving the debris to a crushing device located in a second conduit using a conveying device, such as an auger. The reduced-size debris is then moved toward the surface using fluid movement. A third conduit may be used to provide and remove material from the bottom of the first conduit to control pressure at the end of the conduit to prevent ingress of material into the first conduit. Water jets or other types of devices may be used to cut or deform a perimeter of a region of geologic material before the projectile is accelerated to control the shape of the borehole and the manner in which debris is broken from the geologic material.

Combined well plug/chemical heater assemblies for use in down-hole operations and associated heater cartridges

The present invention provides a cartridge (1) for a chemical heater used in down- hole operations. The cartridge (1) comprises a quantity of a chemical reaction heat source (2) wrapped in a temporary coating (3) that is capable of maintaining the shape of the cartridge (1) prior to use but which is consumed during the burn of the heater. The present invention also provides a eutectic/bismuth based alloy well plugging/sealing tool (5). The tool (5) having a tubular heater body (6) with an internal cavity (8) capable of receiving a chemical heat source and a quantity of eutectic/bismuth based alloy (7) provided in thermal communication with the heater body (6) around an outer surface of the heater body (6). The tool has a sleeve (10) provided around an outer surface of the alloy (7), which insulates and/or mechanically protects the alloy down-hole. In this way the sleeve (10) enables the diameter of tool (5) to be reduced whilst maintaining its functionality. In further aspect, the present invention also discloses the provision of a refractory lining (20) on the inner walls of the tubular heater body of chemical heaters, such as the heater (6) used in the eutectic/bismuth based alloy well plugging/sealing tool (5).

Borkrone med knaster som har hardt belegg.

Einstellbarer Bohrstrangstabilisator

Einstellbarer Bohrstrangstabilisator

Ram accelerator augmented drilling system

Systems for drilling or tunneling include an assembly for accelerating a projectile into a region of geologic material. An interaction between the projectile and the geologic material extends a borehole and forms debris. The debris may be reduced in size by moving the debris to a crushing device. The reduced-size debris is then moved toward the surface using fluid movement. Water jets or other types of devices may be used to cut or deform a perimeter of a region of geologic material before the projectile is accelerated to control the shape of the borehole and the manner in which debris is broken from the geologic material.

Automatische Leitwegsuche von digitalen Röntgenbildern zum gewählten Ziel

Positive displacement motor with radially constrained rotor catch

Techniques relate to a moving cavity motor or pump, such as a mud motor, including a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator, where the apparatus for constraining is operable with the rotor catch. The motor may include a top sub, power section having a progressive cavity motor with a stator and rotor, a rotor catch, and an apparatus between a proximal and distal end of the rotor catch shaft. The apparatus may constrain the radial and/or tangential movement of the rotor catch shaft and the rotor.

U-joint for a downhole motor drive shaft

A downhole motor drive shaft assembly includes a drive shaft having a longitudinal rotational axis, a plurality of drive key sockets, an end housing having a longitudinal rotational axis, a plurality of circumferentially spaced axial keyways, and a concave spherical thrust bearing surface, and a drive key operatively connecting each drive key socket with a respective axial keyway for transferring torque from the drive shaft to the end housing. The drive key includes a substantially planar drive face slidably engaging the axial keyway, and a radiused, cylindrical back portion rotatably engaging the drive key socket, the substantially planar drive face and radiused, cylindrical back portion forming a nominal half-circle.

Positive displacement motor with radially constrained rotor catch

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator, where the apparatus for constraining is operable with the rotor catch.

Flow restrictor for a mud motor

An assembly to restrict fluid flow through the bearing section of a positive displacement or progressive cavity pump or motor. The assembly fits within the bearing chamber and includes an upper ring member, a lower ring member, an outer ring member and a floating member. The floating ring member is axially disposed between the upper and lower ring members. The floating ring member is also disposed at least partially around a drive shaft and is radially movable and constrained inwardly of the outer ring member. The floating ring member has a radial clearance between the drive shaft and a floating ring member inner surface with the radial clearance varying depending on the relative position of the floating ring member to the outer ring member.

High power laser-mechanical drilling bit and methods of use

An apparatus with a high power laser-mechanical bit for use with a laser drilling system and a method for advancing a borehole. The laser-mechanical bit has a beam path and mechanical removal devices that provide for the removal of laser-affected rock to advance a borehole.

Undercut stator for a positive displacment motor

A Moineau style stator includes a stator tube having a plurality of rigid helical lobes formed on an inner surface thereof. The helical lobes define a major internal tube diameter that is greater than a pass through diameter of the tube such that the major diameter undercuts the pass through diameter of the tube. A major liner diameter may also be less than the pass through diameter so as to provide a suitable interference fit between rotor and stator.