US20090255662A1 - Apparatus for tubular drill string making or breaking - Google Patents
Apparatus for tubular drill string making or breaking Download PDFInfo
- Publication number
- US20090255662A1 US20090255662A1 US12/081,151 US8115108A US2009255662A1 US 20090255662 A1 US20090255662 A1 US 20090255662A1 US 8115108 A US8115108 A US 8115108A US 2009255662 A1 US2009255662 A1 US 2009255662A1
- Authority
- US
- United States
- Prior art keywords
- wrench
- wrench assembly
- pair
- die insert
- gripping arms
- 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
Links
- 230000000712 assembly Effects 0.000 abstract description 13
- 238000000429 assembly Methods 0.000 abstract description 13
- 238000005553 drilling Methods 0.000 abstract description 2
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
- E21B19/164—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe motor actuated
Definitions
- the invention is an automated apparatus having a wrenching device integrated with a rotating device.
- the apparatus is used here for making and breaking tubular drill string.
- This invention includes three major components of a top wrench, a bottom wrench, and a support structure.
- the top wrench can advantageously rotate clockwise or counter clockwise about the centerline of the drill string while being supported on the bottom wrench by a hydraulic actuator.
- the top wrench has a clamping wrench assembly and a rotating assembly integrated into a single unit through a common structural frame or bracket.
- the top wrench assembly includes a wrench clamping actuator, a die insert holder and die insert, mounted at a geometrically symmetrical center between a pair of rotatable rollers through a common structural frame or bracket.
- the integrated top unit is pivotally mounted to the front end of an arm which is also pivotally mounted at the rear end of the arm.
- the top pair of arms carrying the unit can open or close at the front end while pivoting about the rear end through a hydraulic cylinder connecting both arms to engage the surface of a pipe section.
- the bottom wrench has a clamping wrench assembly and a pair of stationary rollers integrated into a single unit through a common structural frame or bracket.
- the bottom clamping wrench assembly includes a wrench clamping actuator, a die insert holder and die insert, mounted at a geometrically symmetrical center between the pair of stationary rollers through a common structural frame or bracket.
- the integrated bottom unit is pivotally mounted to the front end of an arm which is also pivotally.
- the bottom pair of arms can open or close at the front end while pivoting about the rear end through a hydraulic cylinder connecting both arms through a pin to engage the outer surface of the drill pipe section.
- the rollers automatically and naturally centralize or align the die insert to the most desirable central position. At this point the maximum number of die insert's teeth evenly bite into the outer surface of the drill string. This is desirable for producing an optimum and maximum making or breaking torque once the wrench clamping actuator pushes the die holder out to position the die insert against the pipe section.
- the apparatus according to the invention permits usage with a range of pipe sized without having to change parts.
- FIG. 1 is a perspective view of the apparatus according to the invention.
- FIG. 2A is a schematic view of the top wrench assembly according to the invention.
- FIG. 2B is plan view of the top wrench assembly shown in FIG. 2A ;
- FIG. 3A is a schematic view of the bottom wrench assembly according to the invention.
- FIG. 2B is plan view of the bottom wrench assembly shown in FIG. 3A ;
- FIG. 4A is a perspective view of the top and bottom wrench assemblies together
- FIG. 4B is a side view of the top and bottom assemblies shown in FIG. 4A ;
- FIG. 5A shows a perspective view of the top wrench bracket assembly
- FIG. 5B shows a plan view of the top wrench bracket assembly shown in FIG. 5A ;
- FIG. 6 shows a perspective view of the bottom wrench bracket assembly
- the apparatus 1 includes a top wrench assembly 10 , a bottom wrench assembly 20 , a support structure 30 , and a control device 40 .
- the top wrench assembly 10 is described in greater detail with reference now to FIGS. 2A and 2B .
- the top wrench assembly 10 includes two top wrench bracket assemblies 12 , a top pair of movable gripping arms 14 , a top arm actuator 16 , and a top wrench camming actuator 18 . It can been seen that the top wrench assemblies 12 are mounted at an open end of each top arm 14 and are shown in contact with a section of drill pipe 2 . Details of the top wrench bracket assembly 12 will be described hereinafter in greater detail.
- the movable arms 14 are mounted to an arm bracket 13 at a closed end of the movable arms 14 and are pivotable with respect to the arm bracket by means of pivot mounting pins 15 .
- the gripping arms 14 pivotally connected either jointly with a single pin for both arms or in the preferred embodiment shown, with each arm 14 having the pivot pin 15 pivotally connecting each movable gripping arm 14 to the arm bracket 13 .
- the top arm actuator 16 is pivotably linked to each arm 14 by arm actuator pivot pins 17 .
- the arm actuator 16 allows the gripping arms 14 to be closed or opened around the outer circumference of the pipe section 2 , in order for top wrench assembly 10 to engage differing casing sizes.
- the arm actuator 16 is preferably a hydraulic cylinder of a known type recognized in the field, therefore detailed explanation of such an actuator is unnecessary, although it will be understood other types of linear actuator may be employed.
- the top wrench camming actuator 18 is attached on one end to the arm bracket 13 at pin 19 .
- the bottom wrench assembly 20 is described in greater detail with reference now to FIGS. 3A and 3B .
- the bottom wrench assembly 20 includes two bottom wrench bracket assemblies 22 , a bottom pair of movable gripping arms 24 , and a bottom arm actuator 26 . It can been seen that the bottom wrench assemblies 22 are mounted at an open end of each bottom arm 24 and are shown in contact with a section of the drill pipe 2 . Details of the bottom wrench bracket assembly 22 will be described hereinafter in greater detail.
- the movable arms 24 are mounted by means of pivot mounting pins 15 to a bracket section (not shown) of the support structure assembly 10 .
- the gripping arms 24 may be pivotally connected either jointly with a single pin for both arms. It will be understood that the bottom arms 24 may be connected in the same manner as the top arms, described above.
- the bottom arm actuator 26 is pivotably linked to each arm 24 by arm actuator pivot pins 27 .
- the arm actuator 26 allows the gripping arms 24 to be closed or opened around the outer circumference of the pipe section 2 , in order for the bottom wrench assembly 20 to engage differing casing sizes.
- the arm actuator 26 is preferably a hydraulic cylinder of a known type recognized in the field, therefore detailed explanation of such an actuator is unnecessary, although it will be understood other types of linear actuator may be employed.
- top wrench assembly 10 is shown directly mounted on top of the bottom wrench 20 assembly. Due to the top wrench bracket assemblies 12 , the top wrench assembly is able to allow relative rotation of the drill pipe section 2 therewith, enabling a drill string making operation. Due to the bottom wrench bracket assemblies 22 , relative rotation of the drill pipe section is not allowed therewith, enabling a drill string breaking operation.
- Each top wrench bracket assembly 12 is shown in greater detail in FIGS. 5A and 5B .
- Each top wrench bracket assembly 12 includes a bracket 52 which carries a die holder 53 , a die insert 54 in a slot (not shown) in the die holder 53 , at least two rotatable rollers 55 , motors 56 for driving the rotatable rollers 55 , and an actuator 57 such as a hydraulic cylinder, for the die insert 54 to provide the wrenching action of the die insert 54 within the slot against the pipe section 2 .
- Such die actuators used in such particular applications are known in the art and therefore further explanation thereof is unnecessary.
- the top wrenching assemblies 12 are mounted to the top arms 14 by means of a pivot connection 58 .
- the pivot connection 58 allows for the bracket 52 to pivot relative to the pipe section 2 to allow for the rotatable rollers 55 to easily engage the circumference of the pipe section 2 .
- Each bottom wrench bracket assembly 22 is shown in greater detail in FIG. 6 .
- Each bottom wrench bracket assembly 22 includes a bracket 62 which carries a die holder 63 , a die insert 64 in a slot (not shown) in the die holder 63 , at least two fixed rollers 65 , and an actuator 67 such as a hydraulic cylinder, for the die insert 64 to provide the wrenching action of the die insert 64 within the slot against the pipe section 2 .
- the bottom wrenching assemblies 22 are mounted to the bottom arms 24 by means of a pivot connection 68 .
- the pivot connection 68 allows for the bracket 62 to pivot relative to the pipe section 2 to allow for the fixed rollers 55 to easily grip the circumference of the pipe section 2 .
- the assembled apparatus as seen in FIG. 1 includes a camming mechanism 50 attached to the support structure 30 .
- a cam 72 having an arcuate path is attached to a top portion of the support structure 30 .
- a cam follower 74 is engaged in the cam 72 and is supported relative to the cam 72 by means of a cam follower bracket 75 .
- the top wrench camming actuator 18 is attached to the cam follower bracket 75 , and as will be understood by those familiar in the art, through a series of linkages 76 connected to the cam follower bracket 75 , and by the connection of the top wrench camming actuator to the top wrench assembly 10 , the entire top wrench assembly 10 may be cammed or rotated relative to the centerline of the pipe section 2 .
- top wrench bracket assemblies 12 as described herein previously, allow for the relative rotation of the rotatable rollers 55 on the surface of the pipe section 2 . While the top wrench assembly 12 is being cammed about the pipe section 2 , the die insert actuators 57 move the die insert within the brackets 52 to engage the surface of the pipe section, thereby forming or making the drill pipe string.
- the top wrench assembly 10 sits on the bottom wrench assembly 20 and can be rotated freely about the center of the string 2 by the actuator 18 which is attached to the back end of the top wrench assembly 10 at one side thereof and to the support structure 30 on the end 32 thereof.
- the cam 72 and the cam follower 74 guide the rotation and provide additional support for the top wrench assembly rotation on top of the bottom wrench assembly.
- the top wrench assembly 10 is also guided by a cam follower which may be embodied as in the preferred embodiment by a pair 74 of cam followers mounted on the top wrench 10 and engaged with the cam 72 .
- the cam 72 attached to the support frame has the same diametric center as the pipe section or string 2 so that once the top wrench assembly 10 rotates thereabout the cam follower 74 rotate about the center of the string within the cam 72 .
- control device 40 is capable of controlling all of the motors, actuators, etc., associated with the apparatus 1 described herein.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
An apparatus for tubular drill string making or breaking including top wrench assembly, bottom wrench assembly, support structure, and control device. The top wrench assembly includes two top wrench bracket assemblies, top pair of movable gripping arms, top arm actuator, and top wrench camming actuator. The arm actuator allows the gripping arms to be closed or opened around the outer circumference of the pipe section, allowing top wrench assembly to engage differing casing sizes. The bottom wrench assembly includes two bottom wrench bracket assemblies, bottom pair of movable gripping arms, and bottom arm actuator. The bottom arm actuator allows the gripping arms to be closed or opened. The top wrench assembly is directly mounted on top of the bottom wrench assembly to allow relative rotation of the drill pipe section therewith. Once a pair of rollers is rotated by a hydraulic motor in the top wrench, or a pair of stationary rollers in the bottom wrench are both engaging with outer surface of the drilling string, the rollers automatically and naturally centralize or align a die insert to the most desirable central position. At this point the maximum number of die insert teeth evenly bite into the outer surface of the drill string.
Description
- The invention is an automated apparatus having a wrenching device integrated with a rotating device. The apparatus is used here for making and breaking tubular drill string.
- This invention includes three major components of a top wrench, a bottom wrench, and a support structure. The top wrench can advantageously rotate clockwise or counter clockwise about the centerline of the drill string while being supported on the bottom wrench by a hydraulic actuator.
- The top wrench has a clamping wrench assembly and a rotating assembly integrated into a single unit through a common structural frame or bracket. The top wrench assembly includes a wrench clamping actuator, a die insert holder and die insert, mounted at a geometrically symmetrical center between a pair of rotatable rollers through a common structural frame or bracket. The integrated top unit is pivotally mounted to the front end of an arm which is also pivotally mounted at the rear end of the arm. The top pair of arms carrying the unit can open or close at the front end while pivoting about the rear end through a hydraulic cylinder connecting both arms to engage the surface of a pipe section.
- The bottom wrench has a clamping wrench assembly and a pair of stationary rollers integrated into a single unit through a common structural frame or bracket. The bottom clamping wrench assembly includes a wrench clamping actuator, a die insert holder and die insert, mounted at a geometrically symmetrical center between the pair of stationary rollers through a common structural frame or bracket. The integrated bottom unit is pivotally mounted to the front end of an arm which is also pivotally. The bottom pair of arms can open or close at the front end while pivoting about the rear end through a hydraulic cylinder connecting both arms through a pin to engage the outer surface of the drill pipe section.
- Advantageously, once the pair of rollers is rotated by a hydraulic motor in the top wrench, or the pair of stationary rollers in the bottom wrench are both engaging with outer surface of the drilling string, the rollers automatically and naturally centralize or align the die insert to the most desirable central position. At this point the maximum number of die insert's teeth evenly bite into the outer surface of the drill string. This is desirable for producing an optimum and maximum making or breaking torque once the wrench clamping actuator pushes the die holder out to position the die insert against the pipe section.
- The apparatus according to the invention permits usage with a range of pipe sized without having to change parts.
- The preferred exemplary embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings. In which:
-
FIG. 1 is a perspective view of the apparatus according to the invention; -
FIG. 2A is a schematic view of the top wrench assembly according to the invention; -
FIG. 2B is plan view of the top wrench assembly shown inFIG. 2A ; -
FIG. 3A is a schematic view of the bottom wrench assembly according to the invention; -
FIG. 2B is plan view of the bottom wrench assembly shown inFIG. 3A ; -
FIG. 4A is a perspective view of the top and bottom wrench assemblies together; -
FIG. 4B is a side view of the top and bottom assemblies shown inFIG. 4A ; -
FIG. 5A shows a perspective view of the top wrench bracket assembly; -
FIG. 5B shows a plan view of the top wrench bracket assembly shown inFIG. 5A ; and -
FIG. 6 shows a perspective view of the bottom wrench bracket assembly; - Referring now to
FIG. 1 , theapparatus 1 for tubular drill string making or breaking according to the invention is shown. Theapparatus 1 includes atop wrench assembly 10, abottom wrench assembly 20, asupport structure 30, and acontrol device 40. - The
top wrench assembly 10 is described in greater detail with reference now toFIGS. 2A and 2B . Thetop wrench assembly 10 includes two topwrench bracket assemblies 12, a top pair of movable grippingarms 14, atop arm actuator 16, and a topwrench camming actuator 18. It can been seen that thetop wrench assemblies 12 are mounted at an open end of eachtop arm 14 and are shown in contact with a section ofdrill pipe 2. Details of the topwrench bracket assembly 12 will be described hereinafter in greater detail. Themovable arms 14 are mounted to anarm bracket 13 at a closed end of themovable arms 14 and are pivotable with respect to the arm bracket by means ofpivot mounting pins 15. The grippingarms 14 pivotally connected either jointly with a single pin for both arms or in the preferred embodiment shown, with eacharm 14 having thepivot pin 15 pivotally connecting eachmovable gripping arm 14 to thearm bracket 13. Thetop arm actuator 16 is pivotably linked to eacharm 14 by armactuator pivot pins 17. Thearm actuator 16 allows the grippingarms 14 to be closed or opened around the outer circumference of thepipe section 2, in order fortop wrench assembly 10 to engage differing casing sizes. Thearm actuator 16 is preferably a hydraulic cylinder of a known type recognized in the field, therefore detailed explanation of such an actuator is unnecessary, although it will be understood other types of linear actuator may be employed. The topwrench camming actuator 18 is attached on one end to thearm bracket 13 atpin 19. - The
bottom wrench assembly 20 is described in greater detail with reference now toFIGS. 3A and 3B . Thebottom wrench assembly 20 includes two bottom wrench bracket assemblies 22, a bottom pair of movable grippingarms 24, and abottom arm actuator 26. It can been seen that thebottom wrench assemblies 22 are mounted at an open end of eachbottom arm 24 and are shown in contact with a section of thedrill pipe 2. Details of the bottomwrench bracket assembly 22 will be described hereinafter in greater detail. Themovable arms 24 are mounted by means ofpivot mounting pins 15 to a bracket section (not shown) of thesupport structure assembly 10. The grippingarms 24 may be pivotally connected either jointly with a single pin for both arms. It will be understood that thebottom arms 24 may be connected in the same manner as the top arms, described above. - The
bottom arm actuator 26 is pivotably linked to eacharm 24 by arm actuator pivot pins 27. Thearm actuator 26 allows the grippingarms 24 to be closed or opened around the outer circumference of thepipe section 2, in order for thebottom wrench assembly 20 to engage differing casing sizes. Thearm actuator 26 is preferably a hydraulic cylinder of a known type recognized in the field, therefore detailed explanation of such an actuator is unnecessary, although it will be understood other types of linear actuator may be employed. - Referring now to
FIGS. 4A and 4B , thetop wrench assembly 10 is shown directly mounted on top of thebottom wrench 20 assembly. Due to the topwrench bracket assemblies 12, the top wrench assembly is able to allow relative rotation of thedrill pipe section 2 therewith, enabling a drill string making operation. Due to the bottomwrench bracket assemblies 22, relative rotation of the drill pipe section is not allowed therewith, enabling a drill string breaking operation. - The top
wrench bracket assembly 12 is shown in greater detail inFIGS. 5A and 5B . Each topwrench bracket assembly 12 includes abracket 52 which carries adie holder 53, adie insert 54 in a slot (not shown) in thedie holder 53, at least tworotatable rollers 55,motors 56 for driving therotatable rollers 55, and anactuator 57 such as a hydraulic cylinder, for thedie insert 54 to provide the wrenching action of thedie insert 54 within the slot against thepipe section 2. Such die actuators used in such particular applications are known in the art and therefore further explanation thereof is unnecessary. Thetop wrenching assemblies 12 are mounted to thetop arms 14 by means of apivot connection 58. Thepivot connection 58 allows for thebracket 52 to pivot relative to thepipe section 2 to allow for therotatable rollers 55 to easily engage the circumference of thepipe section 2. - The bottom
wrench bracket assembly 22 is shown in greater detail inFIG. 6 . Each bottomwrench bracket assembly 22 includes abracket 62 which carries adie holder 63, adie insert 64 in a slot (not shown) in thedie holder 63, at least twofixed rollers 65, and anactuator 67 such as a hydraulic cylinder, for thedie insert 64 to provide the wrenching action of thedie insert 64 within the slot against thepipe section 2. Such die actuators used in such particular applications are known in the art and therefore further explanation thereof is unnecessary. Thebottom wrenching assemblies 22 are mounted to thebottom arms 24 by means of apivot connection 68. Thepivot connection 68 allows for thebracket 62 to pivot relative to thepipe section 2 to allow for the fixedrollers 55 to easily grip the circumference of thepipe section 2. - The assembled apparatus as seen in
FIG. 1 , includes acamming mechanism 50 attached to thesupport structure 30. Acam 72 having an arcuate path is attached to a top portion of thesupport structure 30. Acam follower 74 is engaged in thecam 72 and is supported relative to thecam 72 by means of acam follower bracket 75. The topwrench camming actuator 18 is attached to thecam follower bracket 75, and as will be understood by those familiar in the art, through a series oflinkages 76 connected to thecam follower bracket 75, and by the connection of the top wrench camming actuator to thetop wrench assembly 10, the entiretop wrench assembly 10 may be cammed or rotated relative to the centerline of thepipe section 2. The topwrench bracket assemblies 12 as described herein previously, allow for the relative rotation of therotatable rollers 55 on the surface of thepipe section 2. While thetop wrench assembly 12 is being cammed about thepipe section 2, thedie insert actuators 57 move the die insert within thebrackets 52 to engage the surface of the pipe section, thereby forming or making the drill pipe string. - The
top wrench assembly 10 sits on thebottom wrench assembly 20 and can be rotated freely about the center of thestring 2 by theactuator 18 which is attached to the back end of thetop wrench assembly 10 at one side thereof and to thesupport structure 30 on theend 32 thereof. Thecam 72 and thecam follower 74 guide the rotation and provide additional support for the top wrench assembly rotation on top of the bottom wrench assembly. Thetop wrench assembly 10 is also guided by a cam follower which may be embodied as in the preferred embodiment by apair 74 of cam followers mounted on thetop wrench 10 and engaged with thecam 72. Thecam 72 attached to the support frame has the same diametric center as the pipe section orstring 2 so that once thetop wrench assembly 10 rotates thereabout thecam follower 74 rotate about the center of the string within thecam 72. - It will be understood that the
control device 40 provided is capable of controlling all of the motors, actuators, etc., associated with theapparatus 1 described herein. - The foregoing relates to the preferred exemplary embodiment of the invention, it being understood that other variants and embodiments thereof are possible within the spirit and scope of the invention, the latter being defined by the appended claims.
Claims (6)
1. An apparatus for making or breaking a tubular drill string, having a wrenching mechanism integrated with a rotating mechanism, comprising:
a first wrench assembly (10) including
a first bracket means (12) for carrying a die insert (54);
actuating means (57) for actuating the die insert (54) within the first bracket means (12) to position the die insert relative to a pipe section (2) during a drill string making process; and
a pair of rotatably driven rollers (55) mounted rotatably on the first bracket means (12), wherein the die insert (54) is disposed on the bracket means (12) at a symmetrical center between the pair of rotatably driven rollers (55).
2. The apparatus according to claim 1 , wherein the first wrench assembly (10) further includes a pair of movable gripping arms (14) pivotally connected together, wherein a first bracket means (12) is pivotably mounted to each of the movable gripping arms (14).
3. The apparatus according to claim 2 , further comprising a camming means (18, 50) for rotating the first wrench assembly (10) relative to a support member around a centerline of a pipe section 2 during a drill string making process.
4. The apparatus according to claim 1 , further comprising a second wrench assembly (20) including
a second bracket means (22) for carrying a die insert (64);
actuating means (67) for actuating the die insert (64) within the second bracket means (22) to position the die insert relative to a pipe section (2) during a drill string breaking process; and
a pair of rotatably fixed rollers (65) fixedly mounted on the second bracket means (22), wherein the die insert (64) is disposed on the second bracket means (22) at a symmetrical center between the pair of rotatably fixed rollers (55).
5. The apparatus according to claim 4 , wherein the second wrench assembly (20) further includes a pair of movable gripping arms (24) pivotally connected together, wherein a second bracket means (22) is pivotably mounted to each of the movable gripping arms (24) of the second wrench assembly (20).
6. The apparatus according to claim 6 , wherein the second wrench assembly (20) embodies the support member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/081,151 US20090255662A1 (en) | 2008-04-11 | 2008-04-11 | Apparatus for tubular drill string making or breaking |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/081,151 US20090255662A1 (en) | 2008-04-11 | 2008-04-11 | Apparatus for tubular drill string making or breaking |
Publications (1)
Publication Number | Publication Date |
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US20090255662A1 true US20090255662A1 (en) | 2009-10-15 |
Family
ID=41163024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/081,151 Abandoned US20090255662A1 (en) | 2008-04-11 | 2008-04-11 | Apparatus for tubular drill string making or breaking |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8746111B2 (en) | 2010-04-15 | 2014-06-10 | Astec Industries, Inc. | Floating wrench assembly for drill rig |
US10309169B2 (en) * | 2014-01-17 | 2019-06-04 | Drillform Technical Services Ltd. | Spinner wrench for a drilling rig |
US10538976B2 (en) | 2013-05-06 | 2020-01-21 | Drillform Technical Services Ltd. | Floor wrench for a drilling rig |
WO2021041009A3 (en) * | 2019-08-09 | 2021-05-27 | George Ge | Torque wrench with modular integrated spinner rollers and clamping dies |
US11608694B2 (en) | 2017-10-30 | 2023-03-21 | Drillform Technical Services Ltd. | Floor wrench for a drilling rig |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7017450B2 (en) * | 2003-08-11 | 2006-03-28 | Bangert Daniel S | Tong jaw and a method for constructing the tong jaw |
US20080060481A1 (en) * | 2006-09-08 | 2008-03-13 | Canrig Drilling Technology Ltd. | Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings |
-
2008
- 2008-04-11 US US12/081,151 patent/US20090255662A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7017450B2 (en) * | 2003-08-11 | 2006-03-28 | Bangert Daniel S | Tong jaw and a method for constructing the tong jaw |
US20080060481A1 (en) * | 2006-09-08 | 2008-03-13 | Canrig Drilling Technology Ltd. | Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8746111B2 (en) | 2010-04-15 | 2014-06-10 | Astec Industries, Inc. | Floating wrench assembly for drill rig |
US10538976B2 (en) | 2013-05-06 | 2020-01-21 | Drillform Technical Services Ltd. | Floor wrench for a drilling rig |
US10309169B2 (en) * | 2014-01-17 | 2019-06-04 | Drillform Technical Services Ltd. | Spinner wrench for a drilling rig |
US11608694B2 (en) | 2017-10-30 | 2023-03-21 | Drillform Technical Services Ltd. | Floor wrench for a drilling rig |
WO2021041009A3 (en) * | 2019-08-09 | 2021-05-27 | George Ge | Torque wrench with modular integrated spinner rollers and clamping dies |
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Legal Events
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Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |