CA1052369A - Holding wrench for drill strings - Google Patents
Holding wrench for drill stringsInfo
- Publication number
- CA1052369A CA1052369A CA251,934A CA251934A CA1052369A CA 1052369 A CA1052369 A CA 1052369A CA 251934 A CA251934 A CA 251934A CA 1052369 A CA1052369 A CA 1052369A
- Authority
- CA
- Canada
- Prior art keywords
- drill
- drill pipe
- platform
- holding member
- pipe section
- 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.)
- Expired
Links
Classifications
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/20—Combined feeding from rack and connecting, e.g. automatically
Landscapes
- 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)
- Earth Drilling (AREA)
Abstract
HOLDING WRENCH FOR DRILL STRINGS
Abstract of the Disclosure Apparatus for holding and supporting a string of con-nected drill pipe sections which are suspended in a bore hole and for assisting in separating one drill pipe section from the string when the string is being disassembled.
Abstract of the Disclosure Apparatus for holding and supporting a string of con-nected drill pipe sections which are suspended in a bore hole and for assisting in separating one drill pipe section from the string when the string is being disassembled.
Description
~,~
1. Field of the Invention. Thls invention relates generally to apparatus for drilling a well or bore hole in the 10 earth using a plurali~y of drill pipe sections joined ln end-to-end relationship with a cutter head or drill on the lowermost end and relates par~icularly to apparatus for selectively sup-porting or holding Lhe drill string and assisting in "breaking"
~he connection be~ween pipe sections when the string is being disassembled.
1. Field of the Invention. Thls invention relates generally to apparatus for drilling a well or bore hole in the 10 earth using a plurali~y of drill pipe sections joined ln end-to-end relationship with a cutter head or drill on the lowermost end and relates par~icularly to apparatus for selectively sup-porting or holding Lhe drill string and assisting in "breaking"
~he connection be~ween pipe sections when the string is being disassembled.
2 Descri tion of the Prior Art. In the past, most vertically disposed drill rigs have included a drill table lo-cated close to the earth and having an opening through which the drill string extended. These prior art structures usually have included a clamp mechanism located adjacent to the drill table and such clamp mechanism was arranged so that a pair of jaws could be actuated to clampingly engage a pair of opposed flat-tened portions adjacent to the upper end of each drill pipe sec-tion. These clamping mechanisms were satisfactory for holding the drill string; however, it was usually necessary to provide a separate "break" wrenrh to s~art separation of the upper drill pipe section from the remainder of the string during disassembly.
The "~reak" wrench has been necessary since each drill plpe sec-tion usually has a reduced threacled stud which engages a threaded opening in the end of the next adjacent pi.pe section. During the drilling operation, the drill string ls rotated in a direc-tlon to tighten the cooperating screw thread~l The "break" wrench ordinarily is sufficient to start separation of the drill pipe ~ectlons but ~dhen such wrench fails to break the threaded oonnec~
tion, substantial manu~l labor has been required with t~e assistance of chains or large stlllson type wrenc~es to break the threads.
S~me efforts h*ve been made ~o improve the conventional clamping mechanisms by providing selectively operable holding wrenches to hold the drill strlng against rotation while the threaded connection has been broken elther by the power plant mounted on the drill rig or by a "break" wrench. Some examples of the prior art are disclosed in the United States pa~ents to Alexander 3,239,016; Back 3,708,U24; Coyne 3,771,389; and Dyer Re. 28,351.
The present invention is embodied in a holding wre~ch including a yoke slidably mounted within a housing and adapted to be extended and retracted by a fluid cylinder. The yoke has a generally U-shaped recess in its outer end of a size to re-ceive the opposed flattened portions of a drill plpe seetion.
The housing is mounted on a rota~able platform carried by the drill table and is located between a pair of spaced stop members secured thereto. During the drilling oper~tion, the yoke is ex-te~ded into engagement with the f~attened portions of the upper~
~ost drill pipe section so that the drill rig power plan~ may be disconnected from the string to permit another drill pipe section to be added. When the drill pipe string is being dis-~S'~3~
assembled after the drilling operation has been completed, orwhen it is necessary to change the drill bit, the power plant of the drill rig is raised so that the uppermost drill pipe section is located entirely above the drill table after which the yoke is extended into engagement with the flattened portions of the next subjacent drill pipe section. Thereafter the power plant is operated in a reverse or unscrewing direction; however, if the connection between the first and second drill pipe sections does not "break", the rotatable platform may be moved from one stop member to the other and then moved rapidly by the power plant in the unscrewing d.irection to cause the housing to slam into the stop member and break the threaded connection between the drill pipe sections.
In one aspect, the present invention provides apparatus mounted on a drill table for selectively prevent-ing relative rotation between the apparatus and a string of drill pipe sections connected together in end-t~-end relation-ship along an axis of rotation, each of said drill pipe sections having at least one flattened portion, said apparatus com-prising a platform swingably mounted on the drill table in a plane generall~ normal to the axis of the drill pipe sect.ions, said platform having an opening through which the drill pipe sections are axially movable, a housing mounte~ on said platform, a holding member slidably mounted in said housing generally radially of said opening, said holding member having means for cooperatively engaging the flattened portion of a drill pipe section, means for selectively extending and retracting said holding member, at least one stop member mounted on the drill table in spaced relationship to said opening and in a position to engage said housing when said
The "~reak" wrench has been necessary since each drill plpe sec-tion usually has a reduced threacled stud which engages a threaded opening in the end of the next adjacent pi.pe section. During the drilling operation, the drill string ls rotated in a direc-tlon to tighten the cooperating screw thread~l The "break" wrench ordinarily is sufficient to start separation of the drill pipe ~ectlons but ~dhen such wrench fails to break the threaded oonnec~
tion, substantial manu~l labor has been required with t~e assistance of chains or large stlllson type wrenc~es to break the threads.
S~me efforts h*ve been made ~o improve the conventional clamping mechanisms by providing selectively operable holding wrenches to hold the drill strlng against rotation while the threaded connection has been broken elther by the power plant mounted on the drill rig or by a "break" wrench. Some examples of the prior art are disclosed in the United States pa~ents to Alexander 3,239,016; Back 3,708,U24; Coyne 3,771,389; and Dyer Re. 28,351.
The present invention is embodied in a holding wre~ch including a yoke slidably mounted within a housing and adapted to be extended and retracted by a fluid cylinder. The yoke has a generally U-shaped recess in its outer end of a size to re-ceive the opposed flattened portions of a drill plpe seetion.
The housing is mounted on a rota~able platform carried by the drill table and is located between a pair of spaced stop members secured thereto. During the drilling oper~tion, the yoke is ex-te~ded into engagement with the f~attened portions of the upper~
~ost drill pipe section so that the drill rig power plan~ may be disconnected from the string to permit another drill pipe section to be added. When the drill pipe string is being dis-~S'~3~
assembled after the drilling operation has been completed, orwhen it is necessary to change the drill bit, the power plant of the drill rig is raised so that the uppermost drill pipe section is located entirely above the drill table after which the yoke is extended into engagement with the flattened portions of the next subjacent drill pipe section. Thereafter the power plant is operated in a reverse or unscrewing direction; however, if the connection between the first and second drill pipe sections does not "break", the rotatable platform may be moved from one stop member to the other and then moved rapidly by the power plant in the unscrewing d.irection to cause the housing to slam into the stop member and break the threaded connection between the drill pipe sections.
In one aspect, the present invention provides apparatus mounted on a drill table for selectively prevent-ing relative rotation between the apparatus and a string of drill pipe sections connected together in end-t~-end relation-ship along an axis of rotation, each of said drill pipe sections having at least one flattened portion, said apparatus com-prising a platform swingably mounted on the drill table in a plane generall~ normal to the axis of the drill pipe sect.ions, said platform having an opening through which the drill pipe sections are axially movable, a housing mounte~ on said platform, a holding member slidably mounted in said housing generally radially of said opening, said holding member having means for cooperatively engaging the flattened portion of a drill pipe section, means for selectively extending and retracting said holding member, at least one stop member mounted on the drill table in spaced relationship to said opening and in a position to engage said housing when said
- 3 -3~
platform is swung in one direction, whereby said holding member is selectively movable into engagement with a drill pipe section to prevent relative rotation between said member and the drill pipe section.
In another aspect, the present invention provides in a drill table having an opening through which a drill pipe section having at least one flattened portion is axially movable, said drill table being disposed generally normal to the axis of said drill pipe section, the improvement com-prising a platform swingably mounted on said drill table in a plane generally normal to the axis of said drill pipe section, said platform having an opening through which said drill pipe section is axially movable, a housing mounted on said platform, a holding member slidably mounted in said housing generally rad-ially of said platform opening, said holding member having one end located adjacent to said platform opening, said one end including a recess of a size to cooperatively receive the flattened portion of said drill pipe section, means for selectively extending and retracting said holding member, at least one stop member mounted on said drill table in spaced relationship to said platform opening and in a position to engage said housing when said platform is rotated in one direction, whereby said holding member may be extended into cooperative engagement with the flattened portion of said drill pipe section to prevent relative rotation there-between.
Brief Description of the Drawings Fig. 1 is a top plan view with portions broken away to show the wrench in retracted position.
Fig. 2 is a perspective view illustrating the wrench in extended position.
Fig. 3 is a section on the line 3-3 of Fig. 2.
Fig. 4 is a section on the line 4-4 of Fig~ 2.
~ 3 ~
J Fig. 5 is a top plan view showing the wrench in ex-tended and rotated pos tion.
Descri tion of the Preferred Embodiment Wi~h continued reference to the drawings, a conven~
tional drill rig (not shown) is provided wlth a high torque power plant which is mounted on a frame and such frame ls mountPd for generally vertical movement on ~he rig. Adjacent to the lower en~ of the rig a drill table 10 is mounted in spaced relationship to the earth. An opening 11 is provided in the table 10 and such 10 opening rotatably receives the collar 12 of a hollow tubular sleeve 13. The inner diameter of the sleeve 13 is large enough to permit a drill pipe secti~n 14 to move axially t:herethrough.
A platform 15 is welded or otherwise attached to the upper portion of the collar 12 and such platform has an outer periphery which overlies and rests on a portion of ~he drill table 10. If desired, a plurality of anti-friction bear~ngs or a bearing surface may be loeated between ~he perlphery of the platform 15 and ~he drill table lO. Wi~h particular reference to Fig. 3, two or more outwardly extending lugs 16 may be welded 20 or otherwise ~tached to the bottom of the collar 12 in over-lapping relationship with a portion of the drill table 10 so that the collar 12 cannot be acc~dentally or ea~ily removed from the opening 11~ The platform 15 is provlded wi~h an elongated tang or ex~ension 17 located generally radlally of the sleeve 13 and a housing 18 is welded or otherwise attached ~hereto.
A yoke or holding mem~er 20 is slidably mounted within the housing 18 and such yoke is provided with a generally U-shaped recess 21 in one end which is of a size to snugly re-ceive the flattened portions of a drill pipe secti~n 14. The ~ 5 ~
s:)pposite end of the yoke or holding member 20 has an elongated slot 22 extending inwardly thereiErom and ~lermirla~ing ~ a pair o shoulders 23 which are in spaced relation~hip to each other.
The shoulders con~nunicate with a dove~ail slot 24.
In order to extend and retract the yoke 20, a pair o upstand~ng ear~ 25 are mounted adjacent to the outer end o~ the tang 17 and such ears are conneeted by a pivot 26 to on~e end of a fluid cylinder 27. Such fluid cylinder has an extend,able and retractable pist~n rod 2~ with a generally frusto-conical pu~h-pull head 29 mounted on its outer end. The head 29 i9 slidably received within the dovetail slot 24 which confines the head in back-and-orth directions. Fluid lines 30 and 31 connect the opposite ends of the fluid cylinder 27 to a fluid motor and reservoir (not shown) so that fluid under pres~ure can be selec-tively introducf~d through either of the fluid lines and dis-char~;ed throu~h the other fluid line to cause the piston rod 28 to be extended or retracted. Such 1uid lines extend through openings 32 and 33 in the upper wall of the hou~ing 18 to the fluld cylinder 27. If desired, the opening 32 may con~nunicate 20 with the irner edge o:f the houæing 18 by an inspection ~lot 34.
Ordinarily a pair of braces 35 are welded or otherwise attached -to the platform 15 and one end of each of such braces is in abut~ing rela~ionship with the hou~ing 18 to support the housing against lateral movement or bending.
A palr o spaced stop members 36 and 37 are welded or o~herwise rigidly a~tached ~o the drill table 10 and eaeh of such stop members is provided wlith an impact face 38 wh:ich is disposed generally radially of the sleeve 13 and subs tantially parallel with the hous ing 18 when the housing is ro-tated irlto intimate 3~
engagement w~ th either of the impaet faces.
In the operation of the device, during the drilllng operation, a plurality of drill pipe ~ections 14 are connected together in end- to-end relationship by the threaded stud of one drill pipe section being received within the opening of an adja-dent drill pipe section. The uppermost drill pipe section is con-nected to a threaded stud of the high tvrque power plant of the drill rig so that rotation of the power plant cau~es rotation of the drill string w~ich, in turn~ causes the cutter or drill bit at the opposite end of ~he string to penetrate ~he earth. While the power plant is rotating the drill string, the drill rig i9 lowering such power plant so that the drill bit continue~ to penetrate the earth.
When the power plant has been lowered to a point slightly above the drill table 10, the flattened portions adja~
cen~ to the upper end of the drill pipe section are allgned wi~h the U-shaped recess o~ the yoke 20 after which the piston rod 28 i~ extended to cause the U-shaped recess to cooperatively re-ceive the flattened portions of the drill pipe section. In thi~
20 posi tion the direction of rotation of the power plant is re-versed to unscrew the power plant stud from the drill pipe sec-tion and if the threaded connection ~s broken the po~er plant stud is unscrewed after which the power plant is raised to re-ceive another drill pipe sectlon which is then screwed into the drill pipe section being held by the yoke 20.
If the rever~ing of the power plant should fail to break the threaded connection between the puwer plarlt stud and the drlll pipe sectlon, the power plant is rotated irl a screw~g direction. Since t~e drill pipe section cannot rotate relative ~ 3 to the yoke 20, the platform 15 is rota~ed within the opening 11 until the housing 18 engages one of the stop members 36 or 37.
At this polnt the direction o rotation of the power plant is rever~ed and operated rapidly in an u~screwing direction which causes th~ housing 18 to swing around and engage the other stop member wi~h a hard impact. The torque of the power plant normally is sufficient to break the threaded c~nnection between the power plan~ stud and the drill pipe section.
After the drilling operat~on has bee~ completed, or when it is necessary to change the drill bit at ~he lower end of the drill ~tring, the power plant is raised so that the drill string i9 lifted until the uppermost drill pipe section is located above the drill table 10 and the ~lattened portions oE the next sub;a-cent pipe sectio~ are in alignment w~th the yoke 20. At this time the yoke is extended into engagem~nt with the subjacent drill pipe sectlon. The power plant th0n is rotated in a screwing dir-ect~on to cause the platfonm 1~ to rotate so ~hat the housing 18 engages one of the stop members after which the directlon of rotation of the power plant i5 reversed to swing the platform in the opposite direction and strike the impact face of the other ~top member with a hard impact force.
I~ is noted that the thread~ of the power plant stud are in the same direc~ion as the threads on the lower end of the drill pipe section; however, when the power plant is rota~ed in an unscrewing direction, the torque which is applled ~o the upper-most drill pipe section and the sudden impact ad~acent to the connection between the uppermost dr~ll pipe section and the next adjacent drill pipe section causes the threaded connlection be-~tween drill pipe sections to break instead of breaking the con-: - 8 :
nection between the upper end o the drill pipe section and the power plsnt stud.
After the threaded connection between the drill pipe sections has been broken, continued rota~ion o~ the power plant unscrews the upper pipe sec~ion from the drill string after which the separated pipe section may be placed i.n a rack and discon-nected fr~m the power plant. The power pl.ant then is lowered so ~hat the power plant s~ud threadedly engages the opening in the upper end of the drill pipe section being held by the yoke after wh~ch the yoke is retracted, the power plant is raised to lift the drill string again, and the operation is repeated.
platform is swung in one direction, whereby said holding member is selectively movable into engagement with a drill pipe section to prevent relative rotation between said member and the drill pipe section.
In another aspect, the present invention provides in a drill table having an opening through which a drill pipe section having at least one flattened portion is axially movable, said drill table being disposed generally normal to the axis of said drill pipe section, the improvement com-prising a platform swingably mounted on said drill table in a plane generally normal to the axis of said drill pipe section, said platform having an opening through which said drill pipe section is axially movable, a housing mounted on said platform, a holding member slidably mounted in said housing generally rad-ially of said platform opening, said holding member having one end located adjacent to said platform opening, said one end including a recess of a size to cooperatively receive the flattened portion of said drill pipe section, means for selectively extending and retracting said holding member, at least one stop member mounted on said drill table in spaced relationship to said platform opening and in a position to engage said housing when said platform is rotated in one direction, whereby said holding member may be extended into cooperative engagement with the flattened portion of said drill pipe section to prevent relative rotation there-between.
Brief Description of the Drawings Fig. 1 is a top plan view with portions broken away to show the wrench in retracted position.
Fig. 2 is a perspective view illustrating the wrench in extended position.
Fig. 3 is a section on the line 3-3 of Fig. 2.
Fig. 4 is a section on the line 4-4 of Fig~ 2.
~ 3 ~
J Fig. 5 is a top plan view showing the wrench in ex-tended and rotated pos tion.
Descri tion of the Preferred Embodiment Wi~h continued reference to the drawings, a conven~
tional drill rig (not shown) is provided wlth a high torque power plant which is mounted on a frame and such frame ls mountPd for generally vertical movement on ~he rig. Adjacent to the lower en~ of the rig a drill table 10 is mounted in spaced relationship to the earth. An opening 11 is provided in the table 10 and such 10 opening rotatably receives the collar 12 of a hollow tubular sleeve 13. The inner diameter of the sleeve 13 is large enough to permit a drill pipe secti~n 14 to move axially t:herethrough.
A platform 15 is welded or otherwise attached to the upper portion of the collar 12 and such platform has an outer periphery which overlies and rests on a portion of ~he drill table 10. If desired, a plurality of anti-friction bear~ngs or a bearing surface may be loeated between ~he perlphery of the platform 15 and ~he drill table lO. Wi~h particular reference to Fig. 3, two or more outwardly extending lugs 16 may be welded 20 or otherwise ~tached to the bottom of the collar 12 in over-lapping relationship with a portion of the drill table 10 so that the collar 12 cannot be acc~dentally or ea~ily removed from the opening 11~ The platform 15 is provlded wi~h an elongated tang or ex~ension 17 located generally radlally of the sleeve 13 and a housing 18 is welded or otherwise attached ~hereto.
A yoke or holding mem~er 20 is slidably mounted within the housing 18 and such yoke is provided with a generally U-shaped recess 21 in one end which is of a size to snugly re-ceive the flattened portions of a drill pipe secti~n 14. The ~ 5 ~
s:)pposite end of the yoke or holding member 20 has an elongated slot 22 extending inwardly thereiErom and ~lermirla~ing ~ a pair o shoulders 23 which are in spaced relation~hip to each other.
The shoulders con~nunicate with a dove~ail slot 24.
In order to extend and retract the yoke 20, a pair o upstand~ng ear~ 25 are mounted adjacent to the outer end o~ the tang 17 and such ears are conneeted by a pivot 26 to on~e end of a fluid cylinder 27. Such fluid cylinder has an extend,able and retractable pist~n rod 2~ with a generally frusto-conical pu~h-pull head 29 mounted on its outer end. The head 29 i9 slidably received within the dovetail slot 24 which confines the head in back-and-orth directions. Fluid lines 30 and 31 connect the opposite ends of the fluid cylinder 27 to a fluid motor and reservoir (not shown) so that fluid under pres~ure can be selec-tively introducf~d through either of the fluid lines and dis-char~;ed throu~h the other fluid line to cause the piston rod 28 to be extended or retracted. Such 1uid lines extend through openings 32 and 33 in the upper wall of the hou~ing 18 to the fluld cylinder 27. If desired, the opening 32 may con~nunicate 20 with the irner edge o:f the houæing 18 by an inspection ~lot 34.
Ordinarily a pair of braces 35 are welded or otherwise attached -to the platform 15 and one end of each of such braces is in abut~ing rela~ionship with the hou~ing 18 to support the housing against lateral movement or bending.
A palr o spaced stop members 36 and 37 are welded or o~herwise rigidly a~tached ~o the drill table 10 and eaeh of such stop members is provided wlith an impact face 38 wh:ich is disposed generally radially of the sleeve 13 and subs tantially parallel with the hous ing 18 when the housing is ro-tated irlto intimate 3~
engagement w~ th either of the impaet faces.
In the operation of the device, during the drilllng operation, a plurality of drill pipe ~ections 14 are connected together in end- to-end relationship by the threaded stud of one drill pipe section being received within the opening of an adja-dent drill pipe section. The uppermost drill pipe section is con-nected to a threaded stud of the high tvrque power plant of the drill rig so that rotation of the power plant cau~es rotation of the drill string w~ich, in turn~ causes the cutter or drill bit at the opposite end of ~he string to penetrate ~he earth. While the power plant is rotating the drill string, the drill rig i9 lowering such power plant so that the drill bit continue~ to penetrate the earth.
When the power plant has been lowered to a point slightly above the drill table 10, the flattened portions adja~
cen~ to the upper end of the drill pipe section are allgned wi~h the U-shaped recess o~ the yoke 20 after which the piston rod 28 i~ extended to cause the U-shaped recess to cooperatively re-ceive the flattened portions of the drill pipe section. In thi~
20 posi tion the direction of rotation of the power plant is re-versed to unscrew the power plant stud from the drill pipe sec-tion and if the threaded connection ~s broken the po~er plant stud is unscrewed after which the power plant is raised to re-ceive another drill pipe sectlon which is then screwed into the drill pipe section being held by the yoke 20.
If the rever~ing of the power plant should fail to break the threaded connection between the puwer plarlt stud and the drlll pipe sectlon, the power plant is rotated irl a screw~g direction. Since t~e drill pipe section cannot rotate relative ~ 3 to the yoke 20, the platform 15 is rota~ed within the opening 11 until the housing 18 engages one of the stop members 36 or 37.
At this polnt the direction o rotation of the power plant is rever~ed and operated rapidly in an u~screwing direction which causes th~ housing 18 to swing around and engage the other stop member wi~h a hard impact. The torque of the power plant normally is sufficient to break the threaded c~nnection between the power plan~ stud and the drill pipe section.
After the drilling operat~on has bee~ completed, or when it is necessary to change the drill bit at ~he lower end of the drill ~tring, the power plant is raised so that the drill string i9 lifted until the uppermost drill pipe section is located above the drill table 10 and the ~lattened portions oE the next sub;a-cent pipe sectio~ are in alignment w~th the yoke 20. At this time the yoke is extended into engagem~nt with the subjacent drill pipe sectlon. The power plant th0n is rotated in a screwing dir-ect~on to cause the platfonm 1~ to rotate so ~hat the housing 18 engages one of the stop members after which the directlon of rotation of the power plant i5 reversed to swing the platform in the opposite direction and strike the impact face of the other ~top member with a hard impact force.
I~ is noted that the thread~ of the power plant stud are in the same direc~ion as the threads on the lower end of the drill pipe section; however, when the power plant is rota~ed in an unscrewing direction, the torque which is applled ~o the upper-most drill pipe section and the sudden impact ad~acent to the connection between the uppermost dr~ll pipe section and the next adjacent drill pipe section causes the threaded connlection be-~tween drill pipe sections to break instead of breaking the con-: - 8 :
nection between the upper end o the drill pipe section and the power plsnt stud.
After the threaded connection between the drill pipe sections has been broken, continued rota~ion o~ the power plant unscrews the upper pipe sec~ion from the drill string after which the separated pipe section may be placed i.n a rack and discon-nected fr~m the power plant. The power pl.ant then is lowered so ~hat the power plant s~ud threadedly engages the opening in the upper end of the drill pipe section being held by the yoke after wh~ch the yoke is retracted, the power plant is raised to lift the drill string again, and the operation is repeated.
Claims (5)
1. Apparatus mounted on a drill table for selectively preventing relative rotation between the apparatus and a string of drill pipe sections connected together in end-to-end relation-ship along an axis of rotation, each of said drill pipe sections having at least one flattened portion, said apparatus comprising a platform swingably mounted on the drill table in a plane gener-ally normal to the axis of the drill pipe sections, said plat-form having an opening through which the drill pipe sections are axially movable, a housing mounted on said platform, a holding member slidably mounted in said housing generally radially of said opening, said holding member having means for cooperatively engaging the flattened portion of a drill pipe section, means for selectively extending and retracting said holding member, at least one stop member mounted on the drill table in spaced relationship to said opening and in a position to engage said housing when said platform is swung in one direction, whereby said holding member is selectively movable into engagement with a drill pipe section to prevent relative rotation between said member and the drill pipe section.
2. The apparatus of Claim 1 in which said means for selectively extending and retracting said holding member includes fluid cylinder means mounted on said platform, said cylinder means having a piston rod, and means for connecting said piston rod to said holding member.
3. The apparatus of Claim 2 in which said means for connecting said piston rod to said holding member includes a generally frusto-conical head carried by said piston rod, and said holding member having a doventail slot which cooperatively receives said head.
4. The apparatus of Claim 1 including sleeve means carried by said platform and extending through an opening in the drill table.
5. In a drill table having an opening through which a drill pipe section having at least one flattened portion is axially movable, said drill table being disposed generally nor-mal to the axis of said drill pipe section, the improvement com-prising a platform swingably mounted on said drill table in a plane generally normal to the axis of said drill pipe section, said platform having an opening through which said drill pipe section is axially movable, a housing mounted on said platform, a holding member slidably mounted in said housing generally rad-ially of said platform opening, said holding member having one end located adjacent to said platform opening, said one end in-cluding a recess of a size to cooperatively receive the flattened portion of said drill pipe section, means for selectively extend-ing and retracting said holding member, at least one stop member mounted on said drill table in spaced relationship to said plat-form opening and in a position to engage said housing when said platform is rotated in one direction, whereby said holding member may be extended into cooperative engagement with the flattened portion of said drill pipe section to prevent relative rotation therebetween.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/618,177 US3980143A (en) | 1975-09-30 | 1975-09-30 | Holding wrench for drill strings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1052369A true CA1052369A (en) | 1979-04-10 |
Family
ID=24476626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA251,934A Expired CA1052369A (en) | 1975-09-30 | 1976-05-06 | Holding wrench for drill strings |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3980143A (en) |
| JP (1) | JPS5243701A (en) |
| BR (1) | BR7604619A (en) |
| CA (1) | CA1052369A (en) |
| ZA (1) | ZA764506B (en) |
Families Citing this family (45)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102414A (en) * | 1976-08-09 | 1978-07-25 | Joy Manufacturing Company | Drilling apparatus |
| US4194579A (en) * | 1976-08-09 | 1980-03-25 | Joy Manufacturing Company | Drilling apparatus and method |
| FR2399531A1 (en) * | 1977-03-15 | 1979-03-02 | Bj Hughes Inc | Computerised boring rig lifting motor and brake operator - with control of making and breaking of boring train joints |
| US4147215A (en) * | 1978-03-09 | 1979-04-03 | Hughes Tool Company | Independently powered breakout apparatus and method for a sectional drill string |
| US4413387A (en) * | 1981-05-22 | 1983-11-08 | William Guier | Drilling apparatus |
| US4700787A (en) * | 1985-10-03 | 1987-10-20 | Buck David A | Power tong torque control |
| CA1276008C (en) * | 1987-01-22 | 1990-11-06 | Allen H. Kaven | Self-adjusting bit basket |
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| US5215153A (en) * | 1991-11-08 | 1993-06-01 | Younes Joseph F | Apparatus for use in driving or withdrawing such earth entering elements as drills and casings |
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| US5511614A (en) * | 1995-01-10 | 1996-04-30 | Jennings; Kenneth L. | Hydraulic system for servicing water pumps in wells |
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| US6827145B2 (en) * | 1997-01-29 | 2004-12-07 | Weatherford/Lamb, Inc. | Methods and apparatus for severing nested strings of tubulars |
| US6742596B2 (en) * | 2001-05-17 | 2004-06-01 | Weatherford/Lamb, Inc. | Apparatus and methods for tubular makeup interlock |
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| GB9718543D0 (en) * | 1997-09-02 | 1997-11-05 | Weatherford Lamb | Method and apparatus for aligning tubulars |
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| US6854533B2 (en) | 2002-12-20 | 2005-02-15 | Weatherford/Lamb, Inc. | Apparatus and method for drilling with casing |
| US6896075B2 (en) | 2002-10-11 | 2005-05-24 | Weatherford/Lamb, Inc. | Apparatus and methods for drilling with casing |
| US6857487B2 (en) | 2002-12-30 | 2005-02-22 | Weatherford/Lamb, Inc. | Drilling with concentric strings of casing |
| US7325610B2 (en) | 2000-04-17 | 2008-02-05 | Weatherford/Lamb, Inc. | Methods and apparatus for handling and drilling with tubulars or casing |
| AUPR825501A0 (en) * | 2001-10-15 | 2001-11-08 | Udl Kl Pty Ltd | Pipe breaking tool & method |
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| US6899186B2 (en) | 2002-12-13 | 2005-05-31 | Weatherford/Lamb, Inc. | Apparatus and method of drilling with casing |
| US6953096B2 (en) | 2002-12-31 | 2005-10-11 | Weatherford/Lamb, Inc. | Expandable bit with secondary release device |
| USRE42877E1 (en) | 2003-02-07 | 2011-11-01 | Weatherford/Lamb, Inc. | Methods and apparatus for wellbore construction and completion |
| US7096982B2 (en) | 2003-02-27 | 2006-08-29 | Weatherford/Lamb, Inc. | Drill shoe |
| US7874352B2 (en) | 2003-03-05 | 2011-01-25 | Weatherford/Lamb, Inc. | Apparatus for gripping a tubular on a drilling rig |
| GB2415722B (en) | 2003-03-05 | 2007-12-05 | Weatherford Lamb | Casing running and drilling system |
| US7650944B1 (en) | 2003-07-11 | 2010-01-26 | Weatherford/Lamb, Inc. | Vessel for well intervention |
| CA2512570C (en) | 2004-07-20 | 2011-04-19 | Weatherford/Lamb, Inc. | Casing feeder |
| US7694744B2 (en) | 2005-01-12 | 2010-04-13 | Weatherford/Lamb, Inc. | One-position fill-up and circulating tool and method |
| CA2533115C (en) | 2005-01-18 | 2010-06-08 | Weatherford/Lamb, Inc. | Top drive torque booster |
| GB2437647B (en) | 2006-04-27 | 2011-02-09 | Weatherford Lamb | Torque sub for use with top drive |
| US7882902B2 (en) | 2006-11-17 | 2011-02-08 | Weatherford/Lamb, Inc. | Top drive interlock |
| US20090211404A1 (en) * | 2008-02-25 | 2009-08-27 | Jan Erik Pedersen | Spinning wrench systems |
| US7975760B2 (en) * | 2009-02-06 | 2011-07-12 | Bucyrus International, Inc. | Tool wrench assembly |
| US10301887B2 (en) | 2014-05-08 | 2019-05-28 | Evolution Engineering Inc. | Drill string sections with interchangeable couplings |
| US10301891B2 (en) * | 2014-05-08 | 2019-05-28 | Evolution Engineering Inc. | Jig for coupling or uncoupling drill string sections with detachable couplings and related methods |
| US10156102B2 (en) | 2014-05-08 | 2018-12-18 | Evolution Engineering Inc. | Gap assembly for EM data telemetry |
| CN106460497B (en) | 2014-05-09 | 2020-10-23 | 开拓工程股份有限公司 | Downhole electronic device carrier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2570080A (en) * | 1948-05-01 | 1951-10-02 | Standard Oil Dev Co | Device for gripping pipes |
| US3239016A (en) * | 1963-05-27 | 1966-03-08 | George E Failing Company | Drill pipe sections and method of and apparatus for automatically breaking out the connections thereof |
| US3291225A (en) * | 1964-07-03 | 1966-12-13 | Gardner Denver Co | Drive coupling for drill string |
| US3463247A (en) * | 1967-08-07 | 1969-08-26 | Robbins & Assoc James S | Drill stem breakout apparatus |
| US3446284A (en) * | 1967-09-15 | 1969-05-27 | Dresser Ind | Pipe handling apparatus |
| US3708024A (en) * | 1971-03-10 | 1973-01-02 | Sanderson Cyclone Drill Co | Drilling machine |
| US3771389A (en) * | 1972-05-19 | 1973-11-13 | Ingersoll Rand Co | Motorized tool assembly for drill rods |
-
1975
- 1975-09-30 US US05/618,177 patent/US3980143A/en not_active Expired - Lifetime
-
1976
- 1976-05-06 CA CA251,934A patent/CA1052369A/en not_active Expired
- 1976-07-06 JP JP51080314A patent/JPS5243701A/en active Granted
- 1976-07-15 BR BR7604619A patent/BR7604619A/en unknown
- 1976-07-27 ZA ZA764506A patent/ZA764506B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU1458376A (en) | 1977-12-08 |
| JPS5243701A (en) | 1977-04-06 |
| ZA764506B (en) | 1977-07-27 |
| US3980143A (en) | 1976-09-14 |
| BR7604619A (en) | 1977-08-02 |
| JPS5342721B2 (en) | 1978-11-14 |
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