CN106121563B - Multi-pipe-diameter list hydraulic top drives back-up tong and its clamping technique - Google Patents
Multi-pipe-diameter list hydraulic top drives back-up tong and its clamping technique Download PDFInfo
- Publication number
- CN106121563B CN106121563B CN201610660101.0A CN201610660101A CN106121563B CN 106121563 B CN106121563 B CN 106121563B CN 201610660101 A CN201610660101 A CN 201610660101A CN 106121563 B CN106121563 B CN 106121563B
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- China
- Prior art keywords
- lever
- tong
- block teeth
- drilling rod
- left end
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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
- E21B19/16—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
- E21B19/163—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe piston-cylinder actuated
Abstract
The present invention relates to a kind of multi-pipe-diameter list hydraulic tops to drive back-up tong device.Its technical solution is：Lever is assemblied in back-up tong main body by axis, and the lever is made of lever left end, lever body, restraint strap, block teeth；Hydraulic power includes hydraulic cylinder, liquid presses piston pole, arc shoe plate, liquid presses piston pole lower end passes through and installs arc shoe plate after preformed hole in back-up tong main body, arc shoe plate is set to be located at right over lever left end, the arc shoe plate in liquid presses piston pole downlink is contacted with lever left end, and lever left end is pushed to move downward, entire lever is pivoted, and lever lower end pushes drilling rod to move right.The invention has the advantages that failure rate is low, service life is long, simple in structure, light-weight, and manufacturing cost is low.It is big to the envelope angle of drilling rod, certain set round effect can be carried out to folded drilling rod, make have shackle on the drilling rod centainly deformed more smooth.Clamping part can be realized flexibly to the close of different calibers with flexible and rigid grasp, it is good to clamp performance.
Description
Technical field
The present invention relates to a kind of field of petroleum machinery, more particularly to a kind of multi-pipe-diameter list hydraulic top drives back-up tong and its clamping work
Skill.
Background technology
Top drive drilling system is the representative of advanced drilling equipment, gathers around and holds out broad prospects.Top, which is driven, has automation journey
The advantage that degree is high, process accident ability is strong.Its maximum advantage is can to carry out upper shackle operation in any height of derrick, real
Existing thribble drilling, bit speed are high.Top, which is driven, to be connect thribble and must carry out shackle operation on drilling rod, what this process needed frequently to use
Mechanism is exactly back-up tong.Back-up tong bears the alternate stress of shackle, thus requires back-up tong structural fatigue performance good.Due to drilling time
Expensive, back-up tong household function is sound and failure rate is low.
Existing back-up tong can be divided into annular back-up tong and side hanging back-ups two major classes：
Annular back-up tong, being not required to righting mechanism can automatic centering.The disadvantage is that care and maintenance is inconvenient, especially more grow permanent teeth
Block, protection pipe nipple or IBOP are relatively difficult.Above-mentioned part could be replaced by generally requiring to remove annular back-up tong.Replace zero
When part, top drives and can not work, and expends the valuable activity duration.And annular back-up tong volume is bulky and hulking, and it is complicated, it is produced into
This height.There is a problem of resetting difficulty in practice, failure rate is higher.
Side hanging back-ups, including opposite opened and laterally opened.This kind of back-up tong small volume, lighter in weight.But it is existing each
In item patent family and material object, it is all made of vertical hydraulic and realizes that vertical and straight movement, horizontal hydraulic pressure are realized, i.e., there are two not Tongfangs for tool
To hydraulic test, there are the redundancies of structure and function.And due to centre offset, there are upper buttons to heart difficulty and drilling rod eccentric wear
The problem of.
Invention content
The purpose of the present invention provides a kind of multi-pipe-diameter list hydraulic top drive back of the body aiming at drawbacks described above of the existing technology
Pincers and its clamping technique.
A kind of multi-pipe-diameter list hydraulic top drive back-up tong, technical solution are：Including back-up tong guide rail, idler wheel, back-up tong main body, hydraulic pressure
Power, spring, lever, axis and the first hexagonal prisms block teeth, the second hexagonal prisms block teeth, lever are assemblied in back-up tong main body by axis,
The lever is made of lever left end, lever body, restraint strap, block teeth, and lever left end lower surface is by spring supporting, lever lower end
Equipped with block teeth, the back of the body is respectively assembled at by constraint band connection, the first hexagonal prisms block teeth and the second hexagonal prisms block teeth between two block teeth
In two prefabricated hexagonal prisms holes of clamp main body right end, and drilling rod kernel of section, the first hexagonal prisms block teeth and the second hexagonal prisms block teeth
Kernel of section be wired to 120 degree；
Hydraulic power includes hydraulic cylinder, liquid presses piston pole, arc shoe plate, and liquid presses piston pole lower end passes through pre- in back-up tong main body
Arc shoe plate is installed after boxing out, and so that arc shoe plate is located at right over lever left end, liquid presses piston pole arc in downlink
Shape shoe plate is contacted with lever left end, and lever left end is pushed to move downward, and entire lever is pivoted, and lever lower end pushes drilling rod
It moving right, the arc shoe plate size is more than preformed hole aperture in back-up tong main body, entire back-up tong can be driven to move up when above carrying,
Back-up tong main body is assemblied on back-up tong guide rail, is moved up and down by idler wheel.
Above-mentioned block teeth, the first hexagonal prisms block teeth and the second hexagonal prisms block teeth are made of wear-resistant material.
Above-mentioned lever left end length is 30 ~ 55cm, and lever lower end length is 30 ~ 45cm.
The reserved six prismatic notches coordinated with the first hexagonal prisms block teeth or the second hexagonal prisms block teeth of above-mentioned back-up tong main body, and
Two six prismatic notches have two groups of four edges parallel to each other.
The multi-pipe-diameter list hydraulic top that the present invention mentions drives the clamping technique of back-up tong, when snapping through journey on drilling rod, including following step
Suddenly：
The first step, preparation stage：
Start drilling well before according to different tube diameters, the first hexagonal prisms block teeth and the second hexagonal prisms tooth are lifted from back-up tong main body
Block, rotation make working face against drilling rod, need to only be adjusted once after converting drilling rod caliber every time；
Second step, descending phase, drilling rod clamp in advance：
The positive oil-filled supercharging of hydraulic cylinder, liquid presses piston pole, arc shoe plate and the downward rigid translation fortune of entire back-up tong main body
Dynamic, back-up tong is integrally displaced downwardly to back-up tong guide rail least significant end, so that drilling rod is entered and steps up region, and spring is not affected by compression during this, only
Play the role of maintaining the position of lever；
Third walks, and clamps drilling rod：
Liquid presses piston pole continues downwards, and arc shoe plate pushes lever left end to move downward, and spring is compressed, while lever is opened
Beginning is pivoted, and the restraint strap contact drilling rod of lever lower end simultaneously pushes away to the right, until restraint strap, block teeth and six ribs of lever lower end
Column block teeth are matched for clamping tightly drilling rod；Restraint strap, the motion process of block teeth are as follows, and when the complete envelope drilling rod of restraint strap, restraint strap will
Both sides block teeth are pulled to centre, and block teeth touch drilling rod, and drilling rod is pushed to be bonded with hexagonal prisms block teeth, the correction of drilling rod out-of-roundness, about
The length of band is 90 ~ 130cm, while having flexible and rigid grasp, and the common rotation for constraining drilling rod, hydraulic pressure maintains 20 ~ 30
Second；
4th step, top, which is driven main shaft and bored, to be turned, and drilling rod and protection pipe nipple are tightened；
5th step, constraint relief loosen drilling rod：
After the completion of upper button, hydraulic cylinder is reversely oil-filled, liquid presses piston pole and arc shoe plate uplink, and spring makes lever negative direction revolve
Turn, the clamping of lever lower end releases；
6th step, uplink stage, back-up tong reset：
It is gone upward on the upside of back-up tong main body after preformed hole after arc shoe plate, entire back-up tong main body is as liquid presses piston pole is to moving up
It is dynamic to leave drilling rod working region；
The course of work of shackle is similar, and only main shaft direction of rotation is different, repeats no more.
The beneficial effects of the invention are as follows：The invention has the advantages that only there are one the hydraulic cylinder of vertical direction, failure rate is low, makes
With long lifespan, winter is not susceptible to freeze, simple in structure, light-weight, and manufacturing cost is low.It is big to the envelope angle of drilling rod, it can
Certain set round effect is carried out to folded drilling rod, makes have shackle on the drilling rod centainly deformed more smooth.Clamping part integrated use
Flexible and rigid grasp can be realized flexibly to the close of different calibers, it is good to clamp performance.
Description of the drawings
Fig. 1 is the back-up tong back-up tong main body schematic diagram that the present invention is free of back-up tong guide rail；
Fig. 2 is the front view of back-up tong；
Fig. 3 is the schematic diagram of lever；
Fig. 4 is the schematic diagram of hexagonal prisms block teeth；
Fig. 5 is the back-up tong preparation stage figure of back-up tong clamping technical process；
Fig. 6 is the back-up tong main body descending phase figure of back-up tong clamping technical process；
Fig. 7 is the back-up tong main body of back-up tong clamping technical process to guide rail bottom diagram；
Fig. 8 is the back-up tong clamping phase figure of back-up tong clamping technical process；
Fig. 9 is the back-up tong loosening stage figure of back-up tong clamping technical process；
Figure 10 is the back-up tong uplink stage diagram of back-up tong clamping technical process；
In upper figure：Back-up tong guide rail 1, back-up tong main body 3, hydraulic power 4, spring 5, lever 6, axis 7 and the first hexagonal prisms tooth
Block 8, drilling rod 9, the second hexagonal prisms block teeth 10；
Hydraulic cylinder 4a, liquid presses piston pole 4b, arc shoe plate 4c；Lever left end 6a, lever body 6b, restraint strap 6c, block teeth 6d.
Specific implementation mode
In conjunction with attached drawing 1-5, the invention will be further described：
A kind of multi-pipe-diameter list hydraulic top drive back-up tong, technical solution are：Including back-up tong guide rail 1, idler wheel, back-up tong main body 3, liquid
Pressure power 4, spring 5, lever 6, axis 7 and the first hexagonal prisms block teeth 8, the second hexagonal prisms block teeth 10, lever 6 are assembled by axis 7
In back-up tong back-up tong main body 3, the lever 6 is made of lever left end 6a, lever body 6b, restraint strap 6c, block teeth 6d, lever left end
The lower surfaces 6a are supported by spring 5, and lever lower end is equipped with block teeth 6d, is connected by restraint strap 6c between two block teeth, the first hexagonal prisms
Block teeth 8 and the second hexagonal prisms block teeth 10 are respectively assembled in two prefabricated hexagonal prisms holes of 3 right end of back-up tong main body, and drilling rod 9 is cut
The kernel of section at face center, the first hexagonal prisms block teeth 8 and the second hexagonal prisms block teeth 10 is wired to 120 degree, two hexagonal prisms block teeth
It is 60 ~ 80cm away from drilling rod centre distance.To the drilling rod of different tube diameters, restraint strap can adjust block teeth spacing.In addition, lever left end
For tabular, lever lower end meets compound constant using restraint strap flexible and the formation of the block teeth of rigidity, and wherein restraint strap includes
The tension core material of steel wire etc..
Hydraulic power 4 includes hydraulic cylinder 4a, liquid presses piston pole 4b, the lower ends arc shoe plate 4c, liquid presses piston pole 4b across the back of the body
Arc shoe plate 4c is installed on clamp main body 3 after preformed hole, arc shoe plate 4c is made to be located at right over lever left end 6a, it is described in hydraulic pressure
Arc shoe plate 4c is contacted with lever left end 6a when piston rod 4b downlinks, and lever left end 6a is pushed to move downward, entire lever 6 around
Axis 7 rotates, and lever lower end pushes drilling rod to move right, and the arc shoe plate 4c sizes are more than preformed hole aperture in back-up tong main body 3,
Entire back-up tong can be driven to move up when above carrying, back-up tong main body 3 is assemblied on back-up tong guide rail 1, is moved up and down by idler wheel.
Wherein, the block teeth 6d, the first hexagonal prisms block teeth 8 and the second hexagonal prisms block teeth 10 are made of wear-resistant material.It is above-mentioned
Lever left end 6a length be 30 ~ 55cm, lever lower end length is 30 ~ 45cm, and the length of restraint strap 6c is 90 ~ 130cm.It is above-mentioned
The reserved six prismatic notches coordinated with the first hexagonal prisms block teeth 8 or the second hexagonal prisms block teeth 10 of back-up tong main body 3, and two six ribs
V notch v has two groups of four edges parallel to each other, and six ribs are processed into corresponding radian according to each different caliber, uses every time
When only need to rotate to corresponding rib dismounting corresponding portion, remaining rib still keeps original state.The application diameter of six block teeth is according to this
For：88.9mm, 139.7mm, 101.6mm, 137.92mm, 114.3mm, 127mm.
With reference to attached drawing 5-10, the multi-pipe-diameter list hydraulic top that the present invention mentions drives the clamping technique of back-up tong, and technical solution is such as
Under：When snapping through journey on drilling rod,
The first step, preparation stage（Such as Fig. 5）：
Start drilling well before according to different tube diameters, the first hexagonal prisms block teeth 8 and the second hexagonal prisms are lifted from back-up tong main body
Block teeth 10, rotation make working face against drilling rod, need to only be adjusted once after converting drilling rod caliber every time；
Second step, descending phase, drilling rod clamp in advance（Such as Fig. 6,7）：
The positive oil-filled superchargings of hydraulic cylinder 4a, liquid presses piston pole 4b, arc shoe plate 4c and entire back-up tong main body 3 are rigid downwards
Translational motion, back-up tong are integrally displaced downwardly to back-up tong guide rail least significant end, so that drilling rod is entered and step up region, spring 5 is not affected by during this
Compression only serves the position effect for maintaining lever；
Third walks, and clamps drilling rod（Such as Fig. 8）：
Liquid presses piston pole 4b continues downwards, and arc shoe plate 4c pushes lever left end 6a to move downward, and spring 5 is compressed, together
When lever 6 start to rotate around axis 7, the restraint strap 6c contact drilling rod of lever lower end simultaneously pushes away to the right, up to the constraint of lever lower end
Band 6c, block teeth 6d and hexagonal prisms block teeth are matched for clamping tightly drilling rod 9；Restraint strap 6c, the motion process of block teeth 6d are as follows, as restraint strap 6c
When complete envelope drilling rod 9, restraint strap 6c pulls both sides block teeth 6d to centre, and block teeth 6d touches drilling rod 9, pushes drilling rod and six
Prism block teeth are bonded, the correction of drilling rod out-of-roundness, and the length of restraint strap is 90 ~ 130cm, while having flexible and rigid grasp, altogether
With the rotation of constraint drilling rod, hydraulic pressure maintains 20 ~ 30 seconds；
4th step, top, which is driven main shaft and bored, to be turned, and drilling rod and protection pipe nipple are tightened（It is same as the prior art to repeat no more）；
5th step, constraint relief loosen drilling rod（Such as Fig. 9）：
After the completion of upper button, hydraulic cylinder 4a is reversely oil-filled, and liquid presses piston pole 4b and arc shoe plate 4c uplinks, spring 5 make lever 6
Negative direction rotates, and the clamping of lever lower end releases；
6th step, uplink stage, back-up tong reset（Such as Figure 10）：
After arc shoe plate 4c goes upward to 3 upside preformed hole of back-up tong main body, entire back-up tong main body is with liquid presses piston pole 4b
Move upwardly off drilling rod working region；
The course of work of shackle is similar, and only main shaft direction of rotation is different, repeats no more.
Advantages of the present invention is as follows：
1, envelope angle is big, and certain school circle function can be carried out to added drilling rod, is had centainly to the drilling rod with deformation
Applicability, extend the service life of drilling rod.Since the hexagonal prisms dissimilar tooth form on the right side of lever is the caliber for different size
Design, each prism is to the envelope angle of drilling rod at 80 degree or more, and the compound constant envelope angle of left end is at 100 degree or more, always
Envelope angle is not less than 260 degree；
2, flexible and rigid composite clamps, and it is good to clamp performance.The design of the parts lever 6c and 6d, makes restraint strap 6c connect first
Drilling rod is touched, is also being increased with the increase enveloping surface of thrust, can ensured three parts block teeth while reach maximum clamping force.It is existing
Flexible constraint has rigid constraint again, and clamping force is more uniform, and clamping stability is good.Compared with traditional rigid grasp, reach phase
The clamping force smaller that same clamping effect needs.It is good to resist twisting property, extends the service life of drilling rod；
3, simple in structure, manufacturing cost is low.Only it is achieved that the downlink of back-up tong is different with clamping two there are one hydraulic cylinder
Action on direction effectively avoids the redundancy of structure.Overall structure is simple, and parts member is few.Due to unhorizontal liquid
It presses equipment, the weight of the back-up tong to substantially reduce, avoids drilling rod friction phenomenon.Integrated hydraulic system is also simplified simultaneously, is reduced
Manufacturing cost.The failure rate of back-up tong reduces, and reliability greatly improves；
It 4, being capable of automatic centering.Roomy guide rail ensure that back-up tong main body is horizontal.8 component of hexagonal prisms block teeth
（As shown in Figure 5）Different annular mouths is processed for six kinds of different calibers, ensure that has the drilling rod of different tube diameters
Well adapting to property, to greatest extent retaining surface contact.And hexagonal prisms position and angle can ensure drilling rod step up after with
Top protects short circuit on a center line, realizes the automatic centering of drilling rod；
5, abrasion is smaller, not damaged in drilling rod.The restraint strap 6c in left side and the friction coefficient of drilling rod be far longer than block teeth and
Friction coefficient between drilling rod, compared with traditional rigid grasp, the clamping force for reaching identical clamping effect needs is small, protection
Drill pipe coupling extends drilling life of drill pipe；
6, daily maintenance is convenient.Back-up tong vertical direction activity space is big after work, for replace block teeth, protection pipe nipple or
IBOP provides bigger working space.The i.e. replaceable entire back-up tong of idler wheel only need to be removed.Back-up tong vertical direction activity space
It can exempt from greatly to damage drilling rod；
7, the held tight to different calibers can be flexibly realized.The flexible constraint of clamping part on the left of the design
Band can be directed to the spacing that two block teeth 6d are adjusted flexibly in different tube diameters, i.e., adapt to different calibers automatically.By rotating right side
Hexagonal prisms block teeth 8, can with different tube diameters generate specific aim clamp；
8, vertical spring has the function of damping and floats up and down.On drilling rod during shackle, due to the bullet of spring 5
Property effect, back-up tong is under the premise of the drilling rod of clamping, additionally it is possible to flexibly provide a vertical floating space, make up screw pitch band
The drilling rod and top that come drive the deviation of the vertical direction of main shaft；
9, hydraulic cylinder life is longer, and winter is not susceptible to the phenomenon that freezes.The design only has there are one vertical hydraulic cylinder, hydraulic pressure
The better tightness of oil.On back-up tong in the shackle course of work, drilling fluid is inevitably had, even landwaste trickles down the back of the body
On clamp main body, the back-up tong with horizontal hydraulic cylinder easy tos produce hydraulic cylinder serious wear, and summer operation is easy oil leak, winter work
Shi Rongyi freezes；
10, the anti-torsion active force that back-up tong guide rail provides is big, and the width of back-up tong is 2 ~ 3 times of drill pipe diameter, is had simultaneously
Roomy back-up tong guide rail has preferable twisting action performance.
Claims (1)
1. a kind of multi-pipe-diameter list hydraulic top drives back-up tong device, it is characterized in that：Including back-up tong guide rail（1）, idler wheel, back-up tong main body（3）、
Hydraulic power（4）, spring（5）, lever（6）, axis（7）And the first hexagonal prisms block teeth（8）, the second hexagonal prisms block teeth（10）, thick stick
Bar（6）Pass through axis（7）It is assemblied in back-up tong main body（3）, the lever（6）By lever left end（6a）, lever body（6b）, restraint strap
（6c）, block teeth（6d）Composition, lever left end（6a）Lower surface is by spring（5）Support, lever lower end are equipped with block teeth（6d）, two teeth
By restraint strap between block（6c）Connection, the first hexagonal prisms block teeth（8）With the second hexagonal prisms block teeth（10）It is respectively assembled at back-up tong master
Body（3）In two prefabricated hexagonal prisms holes of right end, and drilling rod（9）Kernel of section, the first hexagonal prisms block teeth（8）With the second hexagonal prisms
Block teeth（10）Kernel of section be wired to 120 degree；
Hydraulic power（4）Including hydraulic cylinder（4a）, liquid presses piston pole（4b）, arc shoe plate（4c）, liquid presses piston pole（4b）Lower end
Across back-up tong main body（3）Arc shoe plate is installed after upper preformed hole（4c）, make arc shoe plate（4c）Positioned at lever left end（6a）Just
Top, the liquid presses piston pole（4b）The arc shoe plate in downlink（4c）With lever left end（6a）Contact, and push lever left
End（6a）It moves downward, entire lever（6）Around axis（7）Rotation, lever lower end push drilling rod to move right, the arc shoe plate
（4c）Size is more than back-up tong main body（3）Upper preformed hole aperture, can drive entire back-up tong to move up when above carrying, back-up tong main body（3）Dress
Fit over back-up tong guide rail（1）On, it is moved up and down by idler wheel；
The block teeth（6d）, the first hexagonal prisms block teeth（8）With the second hexagonal prisms block teeth（10）It is made of wear-resistant material；
The lever left end（6a）Length is 30 ~ 55cm, and lever lower end length is 30 ~ 45cm, restraint strap（6c）Length be
90~130cm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610660101.0A CN106121563B (en) | 2014-01-07 | 2014-01-07 | Multi-pipe-diameter list hydraulic top drives back-up tong and its clamping technique |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610660101.0A CN106121563B (en) | 2014-01-07 | 2014-01-07 | Multi-pipe-diameter list hydraulic top drives back-up tong and its clamping technique |
| CN201410005781.3A CN103711445B (en) | 2014-01-07 | 2014-01-07 | Multi-pipe-diameter list hydraulic top drives back-up tong and clamping technique thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410005781.3A Division CN103711445B (en) | 2014-01-07 | 2014-01-07 | Multi-pipe-diameter list hydraulic top drives back-up tong and clamping technique thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106121563A CN106121563A (en) | 2016-11-16 |
| CN106121563B true CN106121563B (en) | 2018-07-31 |
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| CN201410005781.3A Expired - Fee Related CN103711445B (en) | 2014-01-07 | 2014-01-07 | Multi-pipe-diameter list hydraulic top drives back-up tong and clamping technique thereof |
| CN201610660101.0A Expired - Fee Related CN106121563B (en) | 2014-01-07 | 2014-01-07 | Multi-pipe-diameter list hydraulic top drives back-up tong and its clamping technique |
| CN201610660360.3A Active CN106121564B (en) | 2014-01-07 | 2014-01-07 | Multi-pipe-diameter list hydraulic top drives back-up tong and its clamping technique |
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| CN109339720B (en) * | 2018-10-31 | 2021-07-13 | 濮阳市中正设备配件有限公司 | Clamping equipment easy to install for petroleum drilling and production machinery |
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| US3799010A (en) * | 1971-10-15 | 1974-03-26 | W Guier | Apparatus for rotating a member |
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| US5255751A (en) * | 1991-11-07 | 1993-10-26 | Huey Stogner | Oilfield make-up and breakout tool for top drive drilling systems |
| CN2321935Y (en) * | 1998-02-24 | 1999-06-02 | 中国石油天然气总公司石油勘探开发科学研究院 | Light top driving device with novel structure |
| CN2399506Y (en) * | 1999-08-20 | 2000-10-04 | 大港油田集团钻采工艺研究院 | Back tongs appts. of top-driving well drilling |
| US7032678B2 (en) * | 1999-10-01 | 2006-04-25 | Frank's Casing Crew And Rental Tools, Inc. | Horseshoe shaped elevator and method for using same |
| CN2512896Y (en) * | 2001-12-05 | 2002-09-25 | 李向明 | Insert top driving drilling device of self clamping back tongs reverse torque beam |
| CN2634100Y (en) * | 2003-06-15 | 2004-08-18 | 宝鸡石油机械有限责任公司 | Back-up tong assembly of top driven drilling device |
| CN2628706Y (en) * | 2003-08-04 | 2004-07-28 | 李金祥 | Tilt oscillating self-clamping back tongs for top driving drilling well apparatus |
| CN101094965B (en) * | 2004-11-30 | 2011-11-16 | 瓦克I/P公司 | Apparatus and method for guiding pipe |
| CN201062495Y (en) * | 2007-02-02 | 2008-05-21 | 辽宁天意实业股份有限公司 | Top-driven drilling device back-up tong assembly |
| CN201078201Y (en) * | 2007-09-12 | 2008-06-25 | 天津瑞灵石油设备有限公司 | Double arm and double cylinder back forceps of drill top drive |
| CN101424162B (en) * | 2007-10-31 | 2011-06-15 | 北京南车时代机车车辆机械有限公司 | Back tong for top-drive drilling unit |
| US7849929B2 (en) * | 2008-05-12 | 2010-12-14 | Longyear Tm, Inc. | Drill rod spinner device |
| US9097072B2 (en) * | 2008-06-06 | 2015-08-04 | Hawk Industries, Inc. | Self-adjusting pipe spinner |
| CN201526291U (en) * | 2009-09-23 | 2010-07-14 | 渤海石油装备制造有限公司石油机械厂 | Linearly floating type back-ups |
| CN203334989U (en) * | 2013-07-17 | 2013-12-11 | 四川宏华石油设备有限公司 | Double-hydraulic-cylinder butt clamp type L-type back-up clamp assembly of top drive device |
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2014
- 2014-01-07 CN CN201410005781.3A patent/CN103711445B/en not_active Expired - Fee Related
- 2014-01-07 CN CN201610660101.0A patent/CN106121563B/en not_active Expired - Fee Related
- 2014-01-07 CN CN201610660360.3A patent/CN106121564B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106121563A (en) | 2016-11-16 |
| CN106121564B (en) | 2018-10-09 |
| CN103711445A (en) | 2014-04-09 |
| CN103711445B (en) | 2016-09-07 |
| CN106121564A (en) | 2016-11-16 |
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