US1312009A - Pipe-pulling device - Google Patents
Pipe-pulling device Download PDFInfo
- Publication number
- US1312009A US1312009A US1312009DA US1312009A US 1312009 A US1312009 A US 1312009A US 1312009D A US1312009D A US 1312009DA US 1312009 A US1312009 A US 1312009A
- Authority
- US
- United States
- Prior art keywords
- pipe
- base
- slips
- pulling device
- cylinders
- 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 - Lifetime
Links
- 239000012530 fluid Substances 0.000 description 14
- 241000272814 Anser sp. Species 0.000 description 4
- 241000893018 Armeria Species 0.000 description 4
- 101710024788 HOMER1 Proteins 0.000 description 2
- 101700080604 INVE Proteins 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003028 elevating Effects 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 230000000284 resting Effects 0.000 description 2
- 230000002459 sustained Effects 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/26—Devices for erecting or removing fences
- E04H17/261—Devices for erecting or removing fences for post and wire handling
- E04H17/265—Devices for erecting or removing fences for post and wire handling for removing posts
Definitions
- This invention relates to new and useful improvements in a pipe pulling device.
- the object of the invention is to provide a device of the character described, which is ppecially designed for pulling pipe from we is Another object of the invention resides in the provision of a device of the character described, which will automatically engage with the pipe to elevate the same, and which will automatically grip and hold the pipe at any point of elevation.
- a further feature of the invention resides in the provision of a device of the character described, which is readily accessible to those working on the derrick floor, and which may be conveniently manipulated.
- a still further feature of the invention resides in the provision of a pipe pulling device, which may be cheaply and easily constructed and easily operated.
- Figure 1 is a ragmentary front elevation of the device, shown partiallyin section,
- Fig. 2 is a'fragmentary, transverse, sectional view, taken on the line 22 of'Fig. 1, Fig. 3, is a fragmentary front elevation.
- Fig. 4L is a side view of the connecting parts, and
- Fig. 5 is a sectional view of a preferred form of jack employed.
- the numeral 1 refers to the base, which has a central opening 2, extending vertically therethrough, and which tapers downwardly, and provided to receive the wedge-shaped slips 3, arcuate in form, to conform to the shape of the opening 2.
- the inner faces of these slips are serrated, forming the teeth 4, adapted to engage with the pipe 5, to be elevated.-
- the base 1, is expump and tended each way and rests upon the arches, 6, 6, which rest upon the respective side beams 7, 7, forming supports for the base 1, and these extended ends and the arches have the alined vertical openings 8, 8, through Patented Aug. 5, 1919.
- These jacks include the cylinders 9, 9, in which the plungers 10, 10, operate.
- the upper ends of the cylinders are formed with annular flanges 11, 11, which engage with the upper side of' the base 1, to hold said cylinders suspended from said base.
- the head block 12 Resting upon the upper ends of the plungers 10, is the head block 12, having the central opening 13, extending vertically therethrough, and tapering downwardly, to receive the wedge-shaped slips 14, which are formed arcuate in cross section to conform to the contour of the opening 13, said slips 14. being similar to the slips 3, and their inner faces being serrated to form engaging teeth 15.
- a pump 16 is provided which may be of any desired form, having one or more cylinders' dependlng upon the amount of fluid pressure required.
- a container 17 provided to contain the motive fluid.
- the pump operates to withdraw the fluid from the container through the pipe 18, which is controlled by the check valve 19, and to force the sameout through the pipe 20, through the two-Way valve 21, and on through the line 22.
- This line is divided into 23, 23, which enter the'cylinders 9, 9, at the bottom.
- the plunger-s 10, 10 are forced upwardly, carrying the head block 12 with them.
- the slips 14 engage with and elevate the pipe, the slips 3, releasing the pipe, and permitting it to move upwardly.
- the cylinders 9 are held in fixed position by line 22.
- the pump is stopped, and the two-way valve is manipulated to Close the pipe 20, and to open the line 22, into communication with the pipe 24. Thereupon the weight of the head block 12 causes the plungers to descend, the
- slips 14 automatically releasing the pipe and the slips 3 engaging the pipe to hold the same elevated.
- the fluid is thereby forced out of the cylinders 10 through the branch pipes 23, the line 22, and the pipe 24 back into the container 17
- the two-way Valve 21 is again manipulated to open the pipe 20 and the pump again started, and another pull thereby exerted on the pipe 5, thereby again elevating it.
- the pipe 5 is gradually pulled from the hole by successive pulls exerted through the hydraulic jacks, and at all times, held against'descending by means of the slips 3, while the head block 12 descends to engage with the pipe, preparatory to another pull.
- the cylinders 9 are suspended from and thus located beneath the base 1, so that when the head block 12 is fully elevated, it will not be too hi h to be readily accessible to the operators.
- jack which may be employed wherein the numeral 9 refers to the cylinder whose upper end is formed with the annular flange 11', which engages with the base '1 to hold the cyhnder suspended.
- the plunger consists of an outer cyllnder 25, and an inner plunger rod 26, the, latter telescoping with the former.
- a pipe puller consisting of a stationary member, a vertically movable member, means carried by the stationary member to engage and hold the pipe elevated, means carried by the movable member and provided to engage the pipe to elevate it, and jacks sustained by the stationary member and operating against the movable member to elevate the latter.
- each jack including a fluid pressure cylinder, a plunger operatin therein, said plunger including an outer cy inder and a plunger rod telescoping said cylinder, and means to engage said last'men- -t-ioned cylinder to hold the same against elevation relative to the said fluid pressure cylinder.
- a device for pulling pipe from a well comprising an oblong base, havin a central opening, arches which support t e respective ends of said base, and which rest upon a suitable foundation, hydraulic jacks fitted through the ends of said base and through said arches, the u per end of each jack having an annular ange, which engages the base and holds the jacks suspended therefrom, a head block having a central opening mounted upon said jacks, to be operated thereby, said central openings of said base and block admitting the pipe to be pulled, means within said respective openings fitted around said pipe, said means in the opening of the base engaging the pipe to hold it elevated, and the means within the opening of the head block engaging the pipeto elevate it when the head :block is elevated.
Description
H. C THRIFT.
PIPE PULLING DEVlCE.
A mcmou mm owls, ma. 1,312,009, PilEOllfOdAHQ. 5, 1919.
.3 SHEETSSHEET l- INV NTOR.
I ATTORNEYS H. C. THRIFT.
PIPE PULLING DEVICE.
' APPLICATION FILED DEC.16. 1918. 1,31%009 Patented Aug. 5,1919.
3 SHEETS-SHEET 2.
INVE 0R. W e.
IM r- 6 ATTORNE H. C. THRIFT.
PIPE PULLING DEVICE. APPLICATION FILED macde. 191s.
Patented Aug. 5, 1919.
3 SHEE-TSSHEET 3.
ATTORNEYS HOMER C. THRIFT, 0F GOOSE CREEK, TEXAS.
PIPE-PULLING DEVICE.
Specification 0! Letters Patent.
Application filed December 16, 1918. Serial No.2 68,978.
To all whom it may concern:
Be it known that I, HOMER C. THRIFT, a citizen of the'United States, residing at Goose Creek, in the county of Harris and State of Texas, have invented certain new and useful Improvements in Pipe-Pulling Devices, of which the following is a specification.
This invention relates to new and useful improvements in a pipe pulling device.
The object of the invention is to provide a device of the character described, which is ppecially designed for pulling pipe from we is Another object of the invention resides in the provision of a device of the character described, which will automatically engage with the pipe to elevate the same, and which will automatically grip and hold the pipe at any point of elevation.
A further feature of the invention resides in the provision of a device of the character described, which is readily accessible to those working on the derrick floor, and which may be conveniently manipulated. A still further feature of the invention resides in the provision of a pipe pulling device, which may be cheaply and easily constructed and easily operated.
With the above and other objects in view, the invention has particular relation to certain novel features of construction, use and arrangement of parts, an example of which is given in this specification and illustrated in the accompaniying drawings, wherein:
Figure 1, is a ragmentary front elevation of the device, shown partiallyin section,
Fig. 2, is a'fragmentary, transverse, sectional view, taken on the line 22 of'Fig. 1, Fig. 3, is a fragmentary front elevation. Fig. 4L, is a side view of the connecting parts, and
Fig. 5, is a sectional view of a preferred form of jack employed.
Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1, refers to the base, which has a central opening 2, extending vertically therethrough, and which tapers downwardly, and provided to receive the wedge-shaped slips 3, arcuate in form, to conform to the shape of the opening 2. The inner faces of these slips are serrated, forming the teeth 4, adapted to engage with the pipe 5, to be elevated.- The base 1, is expump and tended each way and rests upon the arches, 6, 6, which rest upon the respective side beams 7, 7, forming supports for the base 1, and these extended ends and the arches have the alined vertical openings 8, 8, through Patented Aug. 5, 1919.
which the hydraulic jacks, hereinafter described, extend. These jacks include the cylinders 9, 9, in which the plungers 10, 10, operate. The upper ends of the cylinders are formed with annular flanges 11, 11, which engage with the upper side of' the base 1, to hold said cylinders suspended from said base. Resting upon the upper ends of the plungers 10, is the head block 12, having the central opening 13, extending vertically therethrough, and tapering downwardly, to receive the wedge-shaped slips 14, which are formed arcuate in cross section to conform to the contour of the opening 13, said slips 14. being similar to the slips 3, and their inner faces being serrated to form engaging teeth 15. l
A pump 16 is provided which may be of any desired form, having one or more cylinders' dependlng upon the amount of fluid pressure required. Above the pump is a container 17 provided to contain the motive fluid. The pump operates to withdraw the fluid from the container through the pipe 18, which is controlled by the check valve 19, and to force the sameout through the pipe 20, through the two-Way valve 21, and on through the line 22. This line is divided into 23, 23, which enter the'cylinders 9, 9, at the bottom.
The pipe 5, to be withdrawn, extends up through the central openings 2 and 13. When pressure is applied to the hydraulic jacks, the plunger-s 10, 10, are forced upwardly, carrying the head block 12 with them. During this upward movement, the slips 14 engage with and elevate the pipe, the slips 3, releasing the pipe, and permitting it to move upwardly. Meanwhile the cylinders 9 are held in fixed position by line 22. When the pipe 5 has been, elevated,
as far as the jacks will carry it, the pump is stopped, and the two-way valve is manipulated to Close the pipe 20, and to open the line 22, into communication with the pipe 24. Thereupon the weight of the head block 12 causes the plungers to descend, the
slips 14 automatically releasing the pipe and the slips 3 engaging the pipe to hold the same elevated. The fluid is thereby forced out of the cylinders 10 through the branch pipes 23, the line 22, and the pipe 24 back into the container 17 The two-way Valve 21 is again manipulated to open the pipe 20 and the pump again started, and another pull thereby exerted on the pipe 5, thereby again elevating it. Thus the pipe 5 is gradually pulled from the hole by successive pulls exerted through the hydraulic jacks, and at all times, held against'descending by means of the slips 3, while the head block 12 descends to engage with the pipe, preparatory to another pull.
It is to be observed that the cylinders 9 are suspended from and thus located beneath the base 1, so that when the head block 12 is fully elevated, it will not be too hi h to be readily accessible to the operators.
t has been found that when the cylinders are mounted above the base, the jacks, when fully elevated, will carry the head block 12, and the slips 14 too high for convenient handling.
In Fig. 5, I have shown the preferred form of jack, which may be employed wherein the numeral 9 refers to the cylinder whose upper end is formed with the annular flange 11', which engages with the base '1 to hold the cyhnder suspended. In this form of jack, the plunger consists of an outer cyllnder 25, and an inner plunger rod 26, the, latter telescoping with the former. When a comparatively light load is to be elevated, a
What I claim is:
1. A pipe puller consisting of a stationary member, a vertically movable member, means carried by the stationary member to engage and hold the pipe elevated, means carried by the movable member and provided to engage the pipe to elevate it, and jacks sustained by the stationary member and operating against the movable member to elevate the latter. each jack including a fluid pressure cylinder, a plunger operatin therein, said plunger including an outer cy inder and a plunger rod telescoping said cylinder, and means to engage said last'men- -t-ioned cylinder to hold the same against elevation relative to the said fluid pressure cylinder.
2. A device for pulling pipe from a well, comprising an oblong base, havin a central opening, arches which support t e respective ends of said base, and which rest upon a suitable foundation, hydraulic jacks fitted through the ends of said base and through said arches, the u per end of each jack having an annular ange, which engages the base and holds the jacks suspended therefrom, a head block having a central opening mounted upon said jacks, to be operated thereby, said central openings of said base and block admitting the pipe to be pulled, means within said respective openings fitted around said pipe, said means in the opening of the base engaging the pipe to hold it elevated, and the means within the opening of the head block engaging the pipeto elevate it when the head :block is elevated.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
HOMER C. THRIFT. Witnesses E. V. HARDWAY, JAs. W. OLIVER.
Publications (1)
Publication Number | Publication Date |
---|---|
US1312009A true US1312009A (en) | 1919-08-05 |
Family
ID=3379508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1312009D Expired - Lifetime US1312009A (en) | Pipe-pulling device |
Country Status (1)
Country | Link |
---|---|
US (1) | US1312009A (en) |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2544557A (en) * | 1945-03-01 | 1951-03-06 | Messrs Walmsleys Bury Ltd | Oscillating doctor for paper machines |
US2592168A (en) * | 1948-11-26 | 1952-04-08 | Edwin A Morris | Hydraulic jack for handling rod strings or the like in wells |
US2700201A (en) * | 1950-04-03 | 1955-01-25 | United States Steel Corp | Operating mechanism for rotary slips |
US2763464A (en) * | 1952-07-26 | 1956-09-18 | Leonhardt Fritz | Apparatus for anchorage of concrete reinforcements |
US2853282A (en) * | 1957-04-19 | 1958-09-23 | Jersey Prod Res Co | Reducing stress caused by thermal expansion of well pipe |
US2874933A (en) * | 1955-03-16 | 1959-02-24 | Cleveland Rock Drill Division | Power actuated pin puller |
US3017681A (en) * | 1959-01-16 | 1962-01-23 | Joy Mfg Co | Rod puller |
US3180617A (en) * | 1963-10-17 | 1965-04-27 | Brown Oil Tools | Wellhead elevating device |
US3233868A (en) * | 1963-05-22 | 1966-02-08 | Harvey Machine Inc | Hydraulically operated well pipe extracting apparatus |
US20090232624A1 (en) * | 2007-10-24 | 2009-09-17 | T&T Engineering Services | Pipe handling apparatus with arm stiffening |
US20100034619A1 (en) * | 2007-10-24 | 2010-02-11 | T&T Engineering Services | Header structure for a pipe handling apparatus |
US20100034620A1 (en) * | 2007-10-24 | 2010-02-11 | T&T Engineering Services | Telescoping jack for a gripper assembly |
US20100032213A1 (en) * | 2007-10-24 | 2010-02-11 | T&T Engineering Services | Apparatus and method for pre-loading of a main rotating structural member |
US20100230166A1 (en) * | 2009-03-12 | 2010-09-16 | T&T Engineering Services | Derrickless tubular servicing system and method |
US20100254784A1 (en) * | 2009-04-03 | 2010-10-07 | T & T Engineering Services | Raise-assist and smart energy system for a pipe handling apparatus |
US20100296899A1 (en) * | 2009-05-20 | 2010-11-25 | T&T Engineering Services | Alignment apparatus and method for a boom of a pipe handling system |
US7918636B1 (en) | 2007-10-24 | 2011-04-05 | T&T Engineering Services | Pipe handling apparatus and method |
US8192129B1 (en) | 2007-10-24 | 2012-06-05 | T&T Engineering Services, Inc. | Pipe handling boom pretensioning apparatus |
US8408334B1 (en) | 2008-12-11 | 2013-04-02 | T&T Engineering Services, Inc. | Stabbing apparatus and method |
US8419335B1 (en) | 2007-10-24 | 2013-04-16 | T&T Engineering Services, Inc. | Pipe handling apparatus with stab frame stiffening |
US8876452B2 (en) | 2009-04-03 | 2014-11-04 | T&T Engineering Services, Inc. | Raise-assist and smart energy system for a pipe handling apparatus |
US9091128B1 (en) | 2011-11-18 | 2015-07-28 | T&T Engineering Services, Inc. | Drill floor mountable automated pipe racking system |
US9476267B2 (en) | 2013-03-15 | 2016-10-25 | T&T Engineering Services, Inc. | System and method for raising and lowering a drill floor mountable automated pipe racking system |
US9500049B1 (en) | 2008-12-11 | 2016-11-22 | Schlumberger Technology Corporation | Grip and vertical stab apparatus and method |
US9556689B2 (en) | 2009-05-20 | 2017-01-31 | Schlumberger Technology Corporation | Alignment apparatus and method for a boom of a pipe handling system |
-
0
- US US1312009D patent/US1312009A/en not_active Expired - Lifetime
Cited By (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2544557A (en) * | 1945-03-01 | 1951-03-06 | Messrs Walmsleys Bury Ltd | Oscillating doctor for paper machines |
US2592168A (en) * | 1948-11-26 | 1952-04-08 | Edwin A Morris | Hydraulic jack for handling rod strings or the like in wells |
US2700201A (en) * | 1950-04-03 | 1955-01-25 | United States Steel Corp | Operating mechanism for rotary slips |
US2763464A (en) * | 1952-07-26 | 1956-09-18 | Leonhardt Fritz | Apparatus for anchorage of concrete reinforcements |
US2874933A (en) * | 1955-03-16 | 1959-02-24 | Cleveland Rock Drill Division | Power actuated pin puller |
US2853282A (en) * | 1957-04-19 | 1958-09-23 | Jersey Prod Res Co | Reducing stress caused by thermal expansion of well pipe |
US3017681A (en) * | 1959-01-16 | 1962-01-23 | Joy Mfg Co | Rod puller |
US3233868A (en) * | 1963-05-22 | 1966-02-08 | Harvey Machine Inc | Hydraulically operated well pipe extracting apparatus |
US3180617A (en) * | 1963-10-17 | 1965-04-27 | Brown Oil Tools | Wellhead elevating device |
US8128332B2 (en) | 2007-10-24 | 2012-03-06 | T & T Engineering Services, Inc. | Header structure for a pipe handling apparatus |
US7980802B2 (en) | 2007-10-24 | 2011-07-19 | T&T Engineering Services | Pipe handling apparatus with arm stiffening |
US20100034620A1 (en) * | 2007-10-24 | 2010-02-11 | T&T Engineering Services | Telescoping jack for a gripper assembly |
US20100032213A1 (en) * | 2007-10-24 | 2010-02-11 | T&T Engineering Services | Apparatus and method for pre-loading of a main rotating structural member |
US8393844B2 (en) | 2007-10-24 | 2013-03-12 | T&T Engineering Services, Inc. | Header structure for a pipe handling apparatus |
US9194193B1 (en) | 2007-10-24 | 2015-11-24 | T&T Engineering Services, Inc. | Pipe handling apparatus and method |
US8696288B2 (en) | 2007-10-24 | 2014-04-15 | T&T Engineering Services, Inc. | Pipe handling boom pretensioning apparatus |
US7918636B1 (en) | 2007-10-24 | 2011-04-05 | T&T Engineering Services | Pipe handling apparatus and method |
US7946795B2 (en) * | 2007-10-24 | 2011-05-24 | T & T Engineering Services, Inc. | Telescoping jack for a gripper assembly |
US8419335B1 (en) | 2007-10-24 | 2013-04-16 | T&T Engineering Services, Inc. | Pipe handling apparatus with stab frame stiffening |
US20110200412A1 (en) * | 2007-10-24 | 2011-08-18 | T&T Engineering Services | Pipe Handling Apparatus and Method |
US20090232624A1 (en) * | 2007-10-24 | 2009-09-17 | T&T Engineering Services | Pipe handling apparatus with arm stiffening |
US8506229B2 (en) | 2007-10-24 | 2013-08-13 | T&T Engineering Services, Inc. | Pipe handling apparatus and method |
US8469648B2 (en) | 2007-10-24 | 2013-06-25 | T&T Engineering Services | Apparatus and method for pre-loading of a main rotating structural member |
US8192129B1 (en) | 2007-10-24 | 2012-06-05 | T&T Engineering Services, Inc. | Pipe handling boom pretensioning apparatus |
US20100034619A1 (en) * | 2007-10-24 | 2010-02-11 | T&T Engineering Services | Header structure for a pipe handling apparatus |
US9500049B1 (en) | 2008-12-11 | 2016-11-22 | Schlumberger Technology Corporation | Grip and vertical stab apparatus and method |
US8408334B1 (en) | 2008-12-11 | 2013-04-02 | T&T Engineering Services, Inc. | Stabbing apparatus and method |
US8371790B2 (en) | 2009-03-12 | 2013-02-12 | T&T Engineering Services, Inc. | Derrickless tubular servicing system and method |
US20100230166A1 (en) * | 2009-03-12 | 2010-09-16 | T&T Engineering Services | Derrickless tubular servicing system and method |
US8172497B2 (en) | 2009-04-03 | 2012-05-08 | T & T Engineering Services | Raise-assist and smart energy system for a pipe handling apparatus |
US8876452B2 (en) | 2009-04-03 | 2014-11-04 | T&T Engineering Services, Inc. | Raise-assist and smart energy system for a pipe handling apparatus |
US20100254784A1 (en) * | 2009-04-03 | 2010-10-07 | T & T Engineering Services | Raise-assist and smart energy system for a pipe handling apparatus |
US9556688B2 (en) | 2009-04-03 | 2017-01-31 | Schlumberger Technology Corporation | Raise-assist and smart energy system for a pipe handling apparatus |
US8192128B2 (en) | 2009-05-20 | 2012-06-05 | T&T Engineering Services, Inc. | Alignment apparatus and method for a boom of a pipe handling system |
US20100296899A1 (en) * | 2009-05-20 | 2010-11-25 | T&T Engineering Services | Alignment apparatus and method for a boom of a pipe handling system |
US8905699B2 (en) | 2009-05-20 | 2014-12-09 | T&T Engineering Services, Inc. | Alignment apparatus and method for a boom of a pipe handling system |
US9556689B2 (en) | 2009-05-20 | 2017-01-31 | Schlumberger Technology Corporation | Alignment apparatus and method for a boom of a pipe handling system |
US9091128B1 (en) | 2011-11-18 | 2015-07-28 | T&T Engineering Services, Inc. | Drill floor mountable automated pipe racking system |
US9945193B1 (en) | 2011-11-18 | 2018-04-17 | Schlumberger Technology Corporation | Drill floor mountable automated pipe racking system |
US9476267B2 (en) | 2013-03-15 | 2016-10-25 | T&T Engineering Services, Inc. | System and method for raising and lowering a drill floor mountable automated pipe racking system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1312009A (en) | Pipe-pulling device | |
US2535054A (en) | Brush puller | |
US2126933A (en) | Well drilling equipment | |
US2592168A (en) | Hydraulic jack for handling rod strings or the like in wells | |
US2416815A (en) | Drill pipe manipulator | |
CN104030170A (en) | Hoisting mechanism of crane for engines | |
US2664073A (en) | Hydraulic jack | |
US2535099A (en) | Brush puller | |
US1536413A (en) | Pipe puller | |
US4119297A (en) | Snubbing apparatus | |
US1398822A (en) | Casing-pulling apparatus | |
CN203740992U (en) | Working table with lifting and overturning device | |
US2087403A (en) | Hydraulic jack for removing rock drill steels | |
US1435486A (en) | Casing puller for oil wells | |
US1454088A (en) | Pipe-pulling apparatus | |
US1528857A (en) | Pneumatic jack | |
US2982125A (en) | Methods of and apparatus for testing well pipe | |
CN104775765B (en) | A kind of Oil/gas Well beam hanger pull-up | |
US3814194A (en) | Earth drilling apparatus | |
CN2233479Y (en) | Tube-drawing working machine | |
US3207475A (en) | Arrangement for stepwise lifting of hoisting cranes preferably tower cranes | |
US2978030A (en) | Fishing tool assembly | |
US2550674A (en) | Supporting column | |
CN2307824Y (en) | Hydraulic pipe drawing device | |
US1054871A (en) | Hydraulic jack. |