US20100257913A1 - Resilient Anchor - Google Patents
Resilient Anchor Download PDFInfo
- Publication number
- US20100257913A1 US20100257913A1 US12/422,603 US42260309A US2010257913A1 US 20100257913 A1 US20100257913 A1 US 20100257913A1 US 42260309 A US42260309 A US 42260309A US 2010257913 A1 US2010257913 A1 US 2010257913A1
- Authority
- US
- United States
- Prior art keywords
- tubular member
- resilient member
- expandable tubular
- anchor
- resilient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for anchoring the tools or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Methods and apparatus for radially expanding and plastically deforming an expandable tubular member using an expansion device for radially expanding and plastically deforming the expandable tubular member, an actuator coupled to the expansion device, and an anchor coupled to the actuator. The anchor includes a resilient member that is selectively deformable between a first position wherein the resilient member does not engage the expandable tubular member and a second position wherein the resilient member engages the expandable tubular member so as to releasably couple the anchor to the expandable tubular member.
Description
- In the oil and gas industry, expandable tubing is often used for casing, liners and the like. To create a casing, for example, a tubular member is installed in a wellbore and subsequently expanded by displacing an expansion cone through the tubular member. The expansion cone may be pushed or pulled using mechanical means, such as by a support tubular coupled thereto, or driven by hydraulic pressure. As the expansion cone is displaced axially within the tubular member, the expansion cone imparts radial force to the inner surface of the tubular member. In response to the radial force, the tubular member plastically deforms, thereby permanently increasing both its inner and outer diameters. In other words, the tubular member expands radially. Expandable tubulars may also be used to repair, seal, or remediate existing casing that has been perforated, parted, corroded, or otherwise damaged since installation.
- In one aspect, the present disclosure relates to methods and apparatus for radially expanding and plastically deforming an expandable tubular member using an expansion device, an actuator coupled to the expansion device, and an anchor coupled to the actuator. The anchor includes a resilient member that is selectively deformable between a first position wherein the resilient member does not engage the expandable tubular member and a second position wherein the resilient member engages the expandable tubular member so as to releasably couple the anchor to the expandable tubular member.
- Other aspects and advantages of the invention will be apparent from the following description and the appended claims.
-
FIG. 1 is a fragmentary cross-sectional illustration of an apparatus for installing an expandable tubular member within a preexisting structure. -
FIG. 2 is a fragmentary cross-sectional illustration of the apparatus ofFIG. 1 after displacing the expansion device within the expandable tubular member. -
FIG. 3 is a fragmentary cross-sectional illustration of the apparatus ofFIG. 2 after displacing the actuator and anchor relative to the expansion device and the expandable tubular member. -
FIG. 4 is a fragmentary cross-sectional illustration of the apparatus ofFIG. 3 after displacing the expansion device within the expandable tubular member. -
FIG. 5A-5B are partial schematic illustrations of an anchor activated by axial compression in accordance with one embodiment. -
FIG. 6A-6B are partial schematic illustrations of an anchor activated by radial expansion in accordance with another embodiment. -
FIG. 7 is a cross-section of an anchor in accordance with one embodiment. -
FIGS. 8A-8C are detailed isometric views of a resilient member for use with the anchor shown inFIG. 7 in accordance with one embodiment. -
FIG. 9 is a fragmentary cross-sectional illustration of an apparatus for anchoring a workstring to a tubular member. -
FIG. 10 is a fragmentary cross-sectional illustration of the apparatus ofFIG. 9 with the workstring anchored to the tubular member. - The present disclosure relates to apparatus and methods for anchoring a workstring within a tubular member such that a process can be performed on the tubular member. In some embodiments, the anchored workstring is used to move the tubular member within a wellbore. In other embodiments, the anchored workstring includes an expansion apparatus operable to radially expand the tubular member within a wellbore.
- Referring to
FIG. 1 , an embodiment of anexpansion apparatus 10 for radially expanding and plastically deforming atubular member 12 includes atubular support member 14 that is coupled to an end of ananchor 16 for controllably engaging the tubular member viaresilient member 26. Another end of theanchor 16 is coupled to atubular support member 18 that is coupled to an end of anactuator 20. Another end of theactuator 20 is coupled to atubular support member 22 that is coupled to an end of anexpansion device 24 for radially expanding and plastically deforming thetubular member 12. Theanchor 16, thetubular support member 18, theactuator 20, and thetubular support member 22 are positioned within thetubular member 12. - In one embodiment, the
expansion apparatus 10 is positioned within apreexisting structure 30 such as, for example, a wellbore that traverses asubterranean formation 32. Oncetubular member 12 andexpansion apparatus 10 are disposed at a desired location withinstructure 30,anchor 16 is activated. The activation ofanchor 16 causesresilient member 26 to deform and engagetubular member 12 so as to releasably coupleanchor 16 totubular member 12. As a result, the axial position ofanchor 16 is fixed relative totubular member 12, as shown inFIG. 2 . The activation ofanchor 16 is further detailed below in reference toFIGS. 5A-5B and 6A-6B. Onceanchor 16 is releasably coupled totubular member 12,actuator 20 can be activated to axially displace theexpansion device 24 relative totubular member 12. The axial displacement ofexpansion device 24 radially expands and plastically deforms a portion of thetubular member 12. - Once
actuator 20 has displacedexpansion device 24, as illustrated inFIG. 3 , theanchor 16 is then deactivated, which disengagesresilient member 26 from thetubular member 12. Withanchor 16 released, thetubular support member 14, theanchor 16, thetubular support member 18, and theactuator 20 can be displaced axially relative to theexpansion device 24. The axial displacement ofanchor 16 andactuator 20 may be effectuated by pullingsupport member 14 upward or through a reversal of the activation ofactuator 20. - As illustrated in
FIG. 4 , theanchor 16 is again releasably coupled totubular member 12 by deformingresilient member 26 into engagement withtubular member 12.Actuator 20 is activated to further axiallydisplace expansion device 24 relative totubular member 12. Asexpansion device 24 is displaced by theactuator 20, another portion oftubular member 12 is radially expanded and plastically deformed. The operations ofFIGS. 3 and 4 can then be repeated until the desired length of thetubular member 12 is radially expanded and plastically deformed. The process of anchoring and releasing may be repeated many times to allow repeated expansion steps. The strains imposed on the resilient members may be limited to avoid any permanent deformation ofresilient member 26 and allow virtually unlimited actuation of theanchor 26. - For example, in the embodiments shown in
FIGS. 1-4 , theactuator 20 may be configured for a stroke length of 3 feet and 3000 feet oftubular member 12 may be expanded. Theanchor 16 could be actuated to anchor thesupport member 14, theactuator 20 then stroked 3 feet to expand a portion oftubular member 12 withexpansion device 24, followed by release of theanchor 16. Pulling up on thesupport member 14 resets theactuator 20 and allows a repeat of the anchoring and expansion in the 3 foot intervals until thetubular member 12 is expanded. - It is understood that
expansion apparatus 10 is only one embodiment of a system utilizing an anchor, actuator, and expansion device and other such systems may be contemplated or are known in the art. For example, the expansion device may be a solid mandrel having a fixed outer diameter, an adjustable or collapsible mandrel with a variable outer diameter, a roller-type expansion device, or any other device used to expand a tubular. Still further, although illustrated inFIG. 1 as having all initial position external to the expandable tubular member and configured for upward expansion, in certain embodiments, the expansion device may have an initial position within the tubular and/or be configured for downward expansion.Expansion apparatus 10 may also utilize any actuator that provides sufficient force to axially displace the expansion device through the expandable tubular. The actuator may be driven by hydraulic pressure, mechanical forces, electrical power, or any other suitable power source. -
FIGS. 5A and 5B schematically illustrate one embodiment of ananchor 112 comprising aresilient member 126 that is deformed by the application of an axial force on the resilient member.Resilient member 126 is a substantially cylindrical body disposed about asupport member 134.Resilient member 126 is axially constrained on one end byflange 128. Piston 130 is disposed adjacent to the other end ofresilient member 126. Whenanchor 112 is activated,piston 130 moves towardflange 128 and axially compressesresilient member 126. - The axial compression of
resilient member 126 increases the outside diameter of the resilient member according to the material properties, such as Poisson's ratio, of the resilient material. For example, a urethane formulated for a downhole environment may have a Poisson's ratio of about 0.50. As a result of the axial compression, the outside of theresilient member 126 comes into contact with, and develops a normal force on, the inner diameter of thetubular member 132. Further axial compression of theresilient member 126 adds to the normal force, which provides the anchoring force for theanchor 112. The anchoring force is approximately the product of the normal force applied to the inner diameter of thetubular member 132 and the coefficient of friction between thetubular member 132 and theresilient member 126. - In certain embodiments,
resilient member 126 may exert a force ontubular member 132 that is sufficient to cause deformation of thetubular member 132. This localized deformation oftubular member 132 may further increase the anchoring force generated byresilient member 126 as the resilient member would have to be sheared or compressed in order to exit the area that has been deformed. -
FIGS. 6A and 6B schematically illustrate another embodiment of ananchor 212 comprising aresilient member 226 that is deformed by radially expanding the resilient member using a taperedmandrel 228.Resilient member 226 is a substantially cylindrical body disposed about asupport member 230.Tapered mandrel 228 is also disposed aboutsupport member 230 and is axially moveable relative thereto.Resilient member 226 is axially constrained on one end byflange 232. Whenanchor 212 is activated, taperedmandrel 228 is moved towardflange 232. - The axial movement of tapered
mandrel 228 forcesresilient member 226 to radially expand outward over the tapered mandrel and into contact withtubular member 234. As a result of the radial expansion, the outside of theresilient member 226 comes into contact with, and develops a normal force on the inner diameter of thetubular member 234. Further radial expansion of theresilient member 226 adds to the normal force, which provides the anchoring force for theanchor 212. The anchoring force is approximately the product of the normal force applied to the inner diameter of thetubular member 234 and the coefficient of friction between thetubular member 234 and theresilient member 226. - In certain embodiments,
resilient member 226 may exert a force ontubular member 234 that is sufficient to cause deformation of the tubular member. This localized deformation oftubular member 234 may further increase the anchoring force generated byresilient member 226 as the resilient member would have to be sheared or compressed in order to exit the area that has been deformed. - In
FIG. 7 , an anchor in accordance with one embodiment is shown. The anchor usesresilient members anchor body 701 to selectively engage the inside oftubular member 12 to anchorsupport member 14 with respect totubular member 12. Engagement of theresilient members resilient members resilient members resilient members tubular member 12, which develops a normal force on the inner diameter of thetubular member 12. Further axial stress on theresilient members tubular member 12 and the coefficient of friction between thetubular member 12 and theresilient members - The form and function of the anchor shown in
FIG. 7 will now be described in greater detail. Those having ordinary skill in the art will appreciate that many modifications may be made to the embodiment shown inFIG. 7 in accordance with the teachings herein. At one end, theanchor body 701 includes a connection, such as a threaded connection, to thesupport member 14. The opposing end of theanchor body 701 is connected to other components of the expansion apparatus, such as an actuator (not shown). The anchor includes tworesilient members anchor body 701. In the relaxed or undocked state, as shown inFIG. 7 , the outside diameter of theresilient members tubular member 12 to allow movement of the expansion apparatus. - The
resilient members top compression flange 720 and abottom compression flange 721, respectively. Theresilient members center wedge 715. The surfaces ofcenter wedge 715 andcompression flanges resilient members resilient members resilient members - In the embodiment shown in
FIG. 7 , thetop compression flange 720 and thebottom compression flange 721 act as pressure-driven pistons to axially compress and radially expand theresilient members upper retainer 701 and alower retainer 711 and the outside diameter of amandrel portion 705 of theanchor body 701. O-rings or any other sealing arrangement may be used to seal between the respective inside and outside diameters of thetop compression flange 720, thebottom compression flange 721, themandrel portion 705 of theanchor body 701, theupper retainer 701, and thelower retainer 711. To anchor thesupport member 14, pressure from the inside of the anchor is transmitted throughports 730 a to actuate thetop compression flange 720 and throughports 730 b to actuate thebottom compression flange 721. The pressure differential between the inside of the anchor and the annulus between thetubular member 12 and theanchor body 701 axially moves thetop compression flange 720 and thebottom compression flange 721 towards each other, thereby axially compressing theresilient members resilient members tubular member 12. Releasing pressure causes theresilient members support member 14 relative to thetubular member 12. - Although a pressure actuated embodiment is shown in
FIG. 7 , those having ordinary skill in the art will appreciate that the anchor could be actuated using other means, such as an electric motor with a linear actuator. Furthermore, the present disclosure is not limited to any number of resilient members. In some embodiments, a single resilient member may provide sufficient anchoring force. Those having ordinary skill in the art will appreciate that the amount of anchoring force needed will depend on many factors, such as the material strength, diameter, and thickness of the tubular member being expanded. -
FIGS. 8A-8C illustrate aresilient member 802 that may be used with the anchor shown inFIG. 7 . In this embodiment, theresilient member 802 is generally cylindrical, but includes azimuthally arranged cuts orgrooves 801 on the exterior to relieve hoop stress in theresilient member 802.Grooves 801 also allow fluid bypass, which may be desirable for pressure equalization or fluid transfer acrossresilient member 802. Extrusion inserts 803 are at opposing ends of each section of theresilient member 802, Because of thegrooves 801, the extrusion inserts 803 will experience less strain during actuation of theresilient member 802, which prevents or minimizes the risk of plastic deformation of the extrusion inserts 803. Extrusion inserts 803 are one example of a reinforcement member that may be used to improve the performance ofresilient member 802. Other reinforcement members may include wire mesh, fibers, balls, and/or other materials combined with the resilient material. - Referring now to
FIGS. 9 and 10 ,workstring 310 comprisesanchor device 316 that is coupled to supportmember 314.Workstring 310 is disposed withintubular member 312 that may be at the surface or may be disposed withinwellbore 330.Anchor device 316 includesresilient member 326 that is operable to engagetubular member 312.Workstring 310 is disposed withintubular member 312 withresilient member 326 in a first position, as shown inFIG. 9 , where the resilient member does not contact the tubular member. Onceworkstring 310 is positioned withintubular member 312,resilient member 326 is selectively deformed to a second position, as shown inFIG. 10 , by the activation ofanchor device 316. - The activation of
anchor device 316 couples workstring 310 totubular member 316.Workstring 310 can then be used to movetubular member 312 withinwellbore 330. For example,workstring 310 may be installed withintubular member 312 at the surface and then be used to lower the tubular member intowellbore 330, such as during casing running or liner drilling operations.Workstring 310 may also be installed within atubular member 312 that is already inwellbore 330 to enable the tubular member to be removed from the wellbore, such as during fishing operations. As described above in relation toFIGS. 1 and 2 ,workstring 310 may also be used to engagetubular member 312 to perform a radial expansion operation. In certain embodiments,anchor device 316 may be operable to transmit torque from workstring 310 totubular member 316, so that the tubular member can be rotated. - Anchors utilizing resilient members as disclosed herein provide an anchor that is less sensitive than other anchoring systems to variations in the inside diameter of the tubular member being expanded. Eccentricity and surface flaws are forgiven by the resilient members pressed against the inside of the tubular member because the resilient members conform to whatever surface they are pressed against. Additionally, the anchors can be configured to anchor within a range of internal diameters to take advantage of the range of radial strain tolerated by the resilient members. Unlike slips or pawls used in other anchoring systems, anchors utilizing resilient members do not gouge or otherwise damage the inside surface of the tubular member, which avoids creating stress concentrations in the tubular member when that portion is later expanded. Additionally, anchors utilizing resilient members are able to be constructed from a relatively few components, thus providing a less complicated and less expensive anchoring device.
- Although this detailed description has shown and described illustrative embodiments of the invention, this description contemplates a wide range of modifications, changes, and substitutions. In some instances, one may employ some features of the present invention without a corresponding use of the other features. Accordingly, it is appropriate that readers should construe the appended claims broadly, and in a manner consistent with the scope of the invention.
Claims (20)
1. An apparatus for radially expanding and plastically deforming an expandable tubular member, comprising:
an expansion device operable to radially expand and plastically deform the expandable tubular member as said expansion device is axially displaced relative to the expandable tubular member;
an actuator coupled to said expansion device and operable to axially displace said expansion device relative to the expandable tubular member; and
an anchor coupled to said actuator, wherein said anchor comprises a resilient member selectively deformable between a first position wherein said resilient member does not engage the expandable tubular member and a second position wherein said resilient member engages the expandable tubular member so as to releasably couple said anchor to the expandable tubular member.
2. The apparatus of claim 1 wherein said resilient member is deformed from the first position to the second position by axially compressing said resilient member.
3. The apparatus of claim 2 wherein said anchor further comprises a compression flange operable to axially compress said resilient member.
4. The apparatus of claim 1 wherein said resilient member is deformed from the first position to the second position by radial expansion.
5. The apparatus of claim 4 wherein said anchor further comprises a mandrel operable to radially expand said resilient member.
6. The apparatus of claim 1 wherein said resilient member further comprises reinforcement members embedded therein.
7. A method comprising:
coupling an anchor comprising a resilient member to a first end of an actuator;
coupling an expansion device to a second end of the actuator;
disposing the anchor into an expandable tubular member;
applying a force to the resilient member so as to deform the resilient member from a first position wherein the resilient member does not engage the expandable tubular member to a second position wherein the resilient member engages the expandable tubular member so as to releasably couple the anchor to the expandable tubular member; and
radially expanding and plastically deforming the expandable tubular member by activating the actuator so as to axially displace the expansion device relative to the expandable tubular member.
8. The method of claim 7 , further comprising:
removing the force from the resilient member so as to allow the resilient member to deform from the second position to the first position;
axially displacing the anchor relative to the expansion device;
applying a force to the resilient member so as to deform the resilient member from the first position to the second position; and
radially expanding and plastically deforming the expandable tubular member by activating the actuator so as to axially displace the expansion device relative to the expandable tubular member.
9. The method of claim 7 , wherein the force applied to the resilient member is an axial compressive force.
10. The method of claim 7 , wherein the force applied to the resilient member is a radial expansion force.
11. The method of claim 7 , wherein the force applied to the resilient member is generated by a pressurized fluid.
12. The method of claim 7 , wherein deforming the resilient member to the second position does not plastically deform the expandable tubular member.
13. The method of claim 7 , wherein deforming the resilient member to the second position plastically deforms the expandable tubular member.
14. A method comprising:
coupling an anchor and an expansion device to an actuator to form an expansion assembly, wherein the anchor comprises a resilient member;
disposing the expansion assembly at least partially within an expandable tubular member that is disposed within a wellbore;
deforming the resilient member from a first position wherein the resilient member does not engage the expandable tubular member to a second position wherein the resilient member engages the expandable tubular member so as to releasably couple the anchor to the expandable tubular member; and
radially expanding and plastically deforming the expandable tubular member by activating the actuator so as to axially displace the expansion device relative to the expandable tubular member.
15. The method of claim 14 , further comprising:
returning the resilient member to the first position from the second position;
axially displacing the anchor relative to the expansion device;
deforming the resilient member from the first position to the second position; and
radially expanding and plastically deforming the expandable tubular member by activating the actuator so as to axially displace the expansion device relative to the expandable tubular member.
16. The method of claim 14 , wherein the resilient member is deformed from the first position to the second position by applying a force to the resilient member and returns to the first position when the force is removed.
17. The method of claim 16 , wherein the force applied to the resilient member is an axial compressive force.
18. The method of claim 16 , wherein the force applied to the resilient member is a radial expansion force.
19. The method of claim 14 , wherein deforming the resilient member to the second position does not plastically deform the expandable tubular member.
20. The method of claim 14 , wherein deforming the resilient member to the second position plastically deforms the expandable tubular member.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US12/422,603 US20100257913A1 (en) | 2009-04-13 | 2009-04-13 | Resilient Anchor |
PCT/US2010/030723 WO2010120677A2 (en) | 2009-04-13 | 2010-04-12 | Resilient anchor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/422,603 US20100257913A1 (en) | 2009-04-13 | 2009-04-13 | Resilient Anchor |
Publications (1)
Publication Number | Publication Date |
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US20100257913A1 true US20100257913A1 (en) | 2010-10-14 |
Family
ID=42933255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/422,603 Abandoned US20100257913A1 (en) | 2009-04-13 | 2009-04-13 | Resilient Anchor |
Country Status (2)
Country | Link |
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US (1) | US20100257913A1 (en) |
WO (1) | WO2010120677A2 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103233696A (en) * | 2013-04-28 | 2013-08-07 | 成都科盛石油科技有限公司 | Two-section repairing mechanism for repairing well wall |
WO2013126065A1 (en) * | 2012-02-24 | 2013-08-29 | Halliburton Energy Servcies, Inc. | Anchor assembly |
WO2016091970A1 (en) * | 2014-12-12 | 2016-06-16 | Shell Internationale Research Maatschappij B.V. | Expanding a tubular element in a wellbore |
WO2016091971A1 (en) * | 2014-12-12 | 2016-06-16 | Shell Internationale Research Maatschappij B.V. | Anchor system and method for use in a wellbore |
US9638357B1 (en) | 2015-06-24 | 2017-05-02 | Omax Corporation | Mechanical processing of high aspect ratio metallic tubing and related technology |
CN109707333A (en) * | 2018-11-15 | 2019-05-03 | 中国石油天然气股份有限公司 | A kind of oil well casing self-expanding subsidy method |
WO2021086317A1 (en) * | 2019-10-29 | 2021-05-06 | Halliburton Energy Services, Inc. | Expandable metal wellbore anchor |
US11904494B2 (en) | 2020-03-30 | 2024-02-20 | Hypertherm, Inc. | Cylinder for a liquid jet pump with multi-functional interfacing longitudinal ends |
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WO2010120677A3 (en) | 2011-01-13 |
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