CN109236196A - One kind compressing formula ocean threaded drillpipe - Google Patents
One kind compressing formula ocean threaded drillpipe Download PDFInfo
- Publication number
- CN109236196A CN109236196A CN201811312903.8A CN201811312903A CN109236196A CN 109236196 A CN109236196 A CN 109236196A CN 201811312903 A CN201811312903 A CN 201811312903A CN 109236196 A CN109236196 A CN 109236196A
- Authority
- CN
- China
- Prior art keywords
- ring
- screw thread
- butt joint
- driving
- joint body
- 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.)
- Pending
Links
- 210000001503 joint Anatomy 0.000 claims abstract description 63
- 229920001971 elastomer Polymers 0.000 claims abstract description 9
- 239000000806 elastomer Substances 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 238000000338 in vitro Methods 0.000 claims description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims 1
- 230000003319 supportive effect Effects 0.000 abstract description 3
- 210000002445 nipple Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007937 lozenge Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
- E21B17/043—Threaded with locking means
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)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
Formula ocean threaded drillpipe is compressed the invention discloses one kind, including the first butt joint body, the second butt joint body, is driven clip assembly, compressed ring, compress elastomer；The present invention is additionally arranged between the first butt joint body and the second butt joint body and compresses ring, ring is compressed to be clamped in annular groove by the T shape that the T shape of one end is clamped the connection anchor ring that ring tooth is connected to the second butt joint body, the ring other end is compressed to be connected in the connection annular groove of the first butt joint body, recycle compress elastomeric resilient squeeze compress ring T shape clamping ring tooth play the role of cushioning supportive.
Description
Technical field
The present invention relates to one kind to compress formula ocean threaded drillpipe.
Background technique
Currently, marine petroleum exploitation generally uses oil drill rocker, oil drill rocker is carried out end-to-end by nipple
Connection, nipple generally comprise male connection and female adapter, male connection and female adapter by screw thread into
The end-to-end connection of row.But oil drill rocker is primarily subjected to the combined loads such as torsion, tension and compression, bending, vibration in drilling well, this
Sample is harsh to the connection request between oil drill rocker, when the oil drill rocker of the prior art carries out exploitation petroleum, oil drill rocker
Often connection can occur at nipple to misplace and fracture built on the sand, need to develop a kind of ocean threaded drillpipe of stable connection.
Summary of the invention
In view of the deficiencies of the prior art mentioned above, problems solved by the invention are as follows: provide a kind of stable connection, operation just
Benefit compresses formula ocean threaded drillpipe.
To solve the above problems, the technical solution adopted by the present invention is as follows:
One kind compresses formula ocean threaded drillpipe, including the first butt joint body, the second butt joint body, drives clip assembly, compress ring, compress
Elastomer；
Clamping internal screw thread channel is equipped with inside the first described butt joint body one end；The clamping internal screw thread channel outer end is equipped with interior
Threaded sections；Axially distributed adjusting annular groove is equipped on the outside of the surrounding of first butt joint body；First butt joint body
Two sides be respectively equipped with a flexible arc groove；It is connected to, stretches in arc groove with adjusting annular groove on the outside of the flexible arc groove
Side is connected to clamping internal screw thread channel inner end；The inside of the adjusting annular groove is equipped with interior adjusting screw thread anchor ring；Described is flexible
The outside of arc groove is equipped with outer adjusting screwed ring face；The outer end face of first butt joint body is equipped with connection annular groove；
The second described butt joint body one end is equipped with clamping external screw thread ring body；The inner end of the clamping external screw thread ring body is equipped with outer spiral shell
Line section, the outer end of clamping external screw thread ring body are equipped with annular clamping groove；Connection ring is equipped on the outside of the clamping external screw thread ring body
Face；The connection anchor ring is equipped with T shape and is clamped annular groove；
Installation is multiple in the T shape clamping annular groove compresses elastomer；Described one end for compressing ring is equipped with T shape and is clamped ring tooth；
The ring that compresses is clamped in annular groove by the T shape that the T shape of one end is clamped the connection anchor ring that ring tooth is connected to the second butt joint body；Institute
The ring other end that compresses stated is connected in the connection annular groove of the first butt joint body；The elastomeric resilient extruding that compresses compresses ring
T shape is clamped ring tooth；
The driving clip assembly includes two flexible arc card adapter plates, two telescopic resilience bodies, a driving ring set；It is described
Flexible arc groove in a telescopic resilience body and a flexible arc card adapter plate are installed respectively；The telescopic resilience is held in vitro
Elasticity is pressed on flexible arc groove inner wall, and the inner end elasticity of telescopic resilience body squeezes the outside of flexible arc card adapter plate；It is described
Driving ring set include inner ring body, outer ring body, connection annular slab；The outer ring body is concentrically mounted on the outside of inner ring body；Institute
The inner ring body stated and outer ring body inner end are fixed by connecting annular slab；The inside of the outer ring body is equipped with outer driving screwed ring
Face；The inside of the inner ring body is equipped with interior driving screw thread anchor ring；The outer driving screw thread anchor ring of the outer ring body and flexible arc
The outer adjusting screwed ring face of shape slot carries out screw thread rotation connection；The interior driving screw thread anchor ring and adjusting annular groove of the inner ring body
Interior adjusting screw thread anchor ring carry out screw thread rotation connection；The outer end of the inner ring body is pressed on two flexible arc card adapter plates
Inside；
Second butt joint body is logical by the external screw thread section of clamping external screw thread ring body and the clamping internal screw thread of the first butt joint body
The internal screw thread section in road carries out screw thread rotation connection；The telescopic resilience body elastic force drives flexible arc card adapter plate insertion clamping
In the annular clamping groove of the second ring body；The driving ring set compresses two flexible arcs of driving by the outer end of inner ring body
Card adapter plate carries out stretching motion in flexible arc groove.
Further, the driving clip assembly further includes two guide rods；It is respectively perpendicular in the flexible arc groove
One guide rod is installed；A telescopic resilience body is socketed on the guide rod respectively.
Further, the flexible arc card adapter plate is equipped with guide groove；The guide rod outer end is fixed on flexible arc
On shape slot inner wall, the inner end of guide rod is inserted into the guide groove of flexible arc card adapter plate after extending through telescopic resilience body.
Further, the driving clip assembly further includes two arc drive blocks；The flexible arc card adapter plate
Inside is installed by one arc drive block respectively；The inside of the arc drive block is equipped with the driven cambered surface of wedge shape；The inner ring
The outer end of body is equipped with wedge shape driving anchor ring；The inner ring body compresses the wedge of driving arc drive block by wedge shape driving anchor ring
The driven cambered surface of shape；When the described wedge shape driving anchor ring moves axially, the driven cambered surface of wedge shape be bonded wedge shape driving anchor ring into
Row radially slides.
Further, the arc drive block is made of polytetrafluoroethylene material.
Further, first butt joint body and the second butt joint body ring body structurc cylindrical.
Beneficial effects of the present invention
The present invention is additionally arranged between the first butt joint body and the second butt joint body and compresses ring, compresses ring by the T shape of one end and is clamped ring
Tooth is connected in the T shape clamping annular groove of the connection anchor ring of the second butt joint body, compresses the company that the ring other end is connected to the first butt joint body
Connect in annular groove, recycle compress elastomeric resilient squeeze compress ring T shape clamping ring tooth play the role of cushioning supportive；The present invention
Smart structural design, be additionally arranged while being attached by the first butt joint body and the second butt joint body by screw thread driving clamping
Component, by driving the rotation of ring set to compress the flexible arc card of driving to the outer end using inner ring body in driving clip assembly
Fishplate bar, so that flexible arc card adapter plate carries out radial expansion movement in flexible arc groove, so that flexible arc card adapter plate insertion
It is connected in the annular clamping groove of the second butt joint body, so that the first butt joint body and the radial and axial of the second butt joint body all realize
The stability of connection；Of the invention operates conveniently, using driving ring set rotation can drive two flexible arc card adapter plates into
To stretching motion, disassembly installation is very convenient for conduct, has started the precedent of this field.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the enlarged cross-sectional view of side of the present invention installed.
Fig. 3 is the enlarged cross-sectional view after Fig. 2 disassembly.
Fig. 4 is that the amplification of side of ring set, flexible arc card adapter plate, arc drive block is driven to split schematic diagram.
Specific embodiment
The content of present invention is described in further detail with reference to the accompanying drawing.
As shown in Figures 1 to 4, one kind compressing formula ocean threaded drillpipe, including the first butt joint body 1, the second butt joint body 2, driving
Clip assembly 3；It compresses ring 4, compress elastomer 5.
As shown in Figures 2 and 3, clamping internal screw thread channel 11 is equipped with inside described 1 one end of the first butt joint body；The clamping
11 outer end of internal screw thread channel is equipped with internal screw thread section 12；It is equipped on the outside of the surrounding of first butt joint body 1 axially distributed
Adjust annular groove 13；The two sides of first butt joint body are respectively equipped with a flexible arc groove 14；The flexible arc groove 14
Outside is connected to annular groove 13 is adjusted, and flexible 14 inside of arc groove is connected to clamping 11 inner end of internal screw thread channel；The adjusting ring
The inside of slot 13 is equipped with interior adjusting screw thread anchor ring 131；The outside of the flexible arc groove 14 is equipped with outer adjusting screwed ring face
141.The outer end face of first butt joint body 1 is equipped with connection annular groove 15.
As shown in Figures 2 and 3, described 2 one end of the second butt joint body is equipped with clamping external screw thread ring body 21；The outer spiral shell of the clamping
The inner end of line ring body 21 is equipped with external screw thread section 23, and the outer end of clamping external screw thread ring body 21 is equipped with annular clamping groove 22.Described
It is clamped on the outside of external screw thread ring body 21 and is equipped with connection anchor ring；The connection anchor ring is equipped with T shape and is clamped annular groove 24.
As shown in Figure 1, installation is multiple in the T shape clamping annular groove 24 compresses elastomer 5；Compress ring 4 one
End is equipped with T shape and is clamped ring tooth 41；The ring 4 that compresses is clamped the company that ring tooth 41 is connected to the second butt joint body 2 by the T shape of one end
It connects in the T shape clamping annular groove 24 of anchor ring；4 other end of ring that compresses is connected in the connection annular groove 15 of the first butt joint body 1；Institute
5 elasticity of elastomer that compresses stated squeezes the T shape clamping ring tooth 41 for compressing ring 4.
As shown in Figures 2 to 4, the driving clip assembly 3 includes two flexible arc card adapter plates, 32, two telescopic resiliences
33, driving ring sets 31 of body；One telescopic resilience body 33 and a flexible arc are installed respectively in the flexible arc groove 14
Shape card adapter plate 32；The 33 outer end elasticity of telescopic resilience body is pressed on flexible 14 inner wall of arc groove, telescopic resilience body 33
Inner end elasticity squeezes the outside of flexible arc card adapter plate 32；The driving ring set 31 includes inner ring body 312, outer ring body 311, connects
Connect annular slab 313；The outer ring body 311 is concentrically mounted on the outside of inner ring body 312；The inner ring body 312 and outer ring body
311 inner ends are fixed by connection annular slab 313；The inside of the outer ring body 311 is equipped with outer driving screw thread anchor ring 3111；It is described
Inner ring body 312 inside be equipped with interior driving screw thread anchor ring 3121；Outer 3111 He of driving screw thread anchor ring of the outer ring body 311
The outer adjusting screwed ring face 141 of flexible arc groove 14 carries out screw thread rotation connection；The interior driving screwed ring of the inner ring body 312
Face 3121 carries out screw thread rotation with the interior adjusting screw thread anchor ring 131 for adjusting annular groove 13 and connects；The outer end of the inner ring body 312
It is pressed on the inside of two flexible arc card adapter plates 34.
As shown in Figures 2 and 3, the external screw thread section 23 and that second butt joint body 2 passes through clamping external screw thread ring body 21
The internal screw thread section 12 in the clamping internal screw thread channel 11 of one butt joint body 1 carries out screw thread rotation connection；The telescopic resilience body 33
Elastic force drives the flexible insertion of arc card adapter plate 32 to be connected in the annular clamping groove 22 of the second ring body 2；The driving ring set 31
Two flexible arc card adapter plates 32 of driving are compressed by the outer end of inner ring body 312, and flexible fortune is carried out in flexible arc groove 14
It is dynamic.
As shown in Figures 1 to 4, further preferably, the driving clip assembly 3 further includes two guide rods 34；Described
One guide rod 34 of installation is respectively perpendicular in flexible arc groove 14；A telescopic resilience body is socketed on the guide rod 34 respectively
33.Further, the flexible arc card adapter plate 32 is equipped with guide groove 321；34 outer end of guide rod is fixed on flexible
On 14 inner wall of arc groove, the inner end of guide rod 34 extends through the guiding of the flexible arc card adapter plate 32 of insertion after telescopic resilience body 33
In slot 321.Further preferably, the driving clip assembly 3 further includes two arc drive blocks 35；The flexible arc card
The inside of fishplate bar 32 is installed by one arc drive block 35 respectively；As shown in figure 4, the inside of the arc drive block 35 is equipped with wedge
The driven cambered surface 351 of shape；The outer end of the inner ring body 312 is equipped with wedge shape driving anchor ring 3122；It is compressed using lozenges sliding
Principle, the inner ring body 312 drives anchor ring 3122 to compress the driven cambered surface of wedge shape of driving arc drive block 35 by wedge shape
351.When the wedge shape driving anchor ring moves axially, wedge-shaped driven cambered surface is bonded wedge shape driving anchor ring and carries out radial slide
It is dynamic.Further preferably, in order to slide convenient and reduce friction, the arc drive block 35 is by polytetrafluoroethylene material system
At.Further preferably, first butt joint body 1 and the second butt joint body 2 ring body structurc cylindrical.
When driving ring set 31 to carry out axial rotation motion in the first ring body 1, the inner ring body 312 of driving ring set 31 passes through
The wedge-shaped driven cambered surface 351 of wedge shape for driving anchor ring 3122 to compress driving arc drive block 35, the principle slided using lozenges, when
When inner ring body 312 is axially moved, wedge shape driving anchor ring 3122 can squeeze the driven cambered surface 351 of wedge shape and be radially slided, from
And arc drive block 35 is driven to be radially slided, it is final that flexible arc card adapter plate 32 is driven to carry out diameter in flexible arc groove 14
To telescopic moving, be inserted into out of annular clamping groove 22 or extract out to control flexible arc card adapter plate 32, during this
Due to the elastic force driving effect of telescopic resilience body 33, telescopic resilience body 33 always stretch arc card adapter plate 32 by resiliency urged, thus
The driven cambered surface 351 of wedge shape of arc drive block 35 is driven to be bonded the wedge shape driving anchor ring 3122 of inner ring body 312 always.
The present invention is additionally arranged between the first butt joint body 1 and the second butt joint body 2 and compresses ring 4, compresses T of the ring 4 by one end
Shape clamping ring tooth 41 is connected in the T shape clamping annular groove 24 of the connection anchor ring of the second butt joint body 2, is compressed 4 other end of ring and is connected to
In the connection annular groove 15 of first butt joint body 1, recycles to compress the elasticity of elastomer 5 and squeeze and compress the T shape clamping ring tooth 41 of ring 4 and play
The effect of cushioning supportive；Smart structural design of the invention is carried out by the first butt joint body 1 and the second butt joint body 2 by screw thread
Driving clip assembly 3 is additionally arranged while connection, by driving the rotation of ring set 31 in driving clip assembly 3 to utilize inner ring
The outer end of body 312 compresses the flexible arc card adapter plate 32 of driving so that flexible arc card adapter plate 32 in flexible arc groove 14 into
Conduct is to stretching motion, so that the flexible insertion of arc card adapter plate 32 is connected in the annular clamping groove 22 of the second butt joint body 2, so that
The radial and axial stability for all realizing connection of first butt joint body 1 and the second butt joint body 2；Of the invention operates conveniently, benefit
Two flexible arc card adapter plates 32 can be driven to carry out radial expansion movement with the rotation of driving ring set 31, disassembly installation is very
It is convenient, start the precedent of this field.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. one kind compresses formula ocean threaded drillpipe, which is characterized in that including the first butt joint body, the second butt joint body, driving clamping group
Part compresses ring, compresses elastomer；
Clamping internal screw thread channel is equipped with inside the first described butt joint body one end；The clamping internal screw thread channel outer end is equipped with interior
Threaded sections；Axially distributed adjusting annular groove is equipped on the outside of the surrounding of first butt joint body；First butt joint body
Two sides be respectively equipped with a flexible arc groove；It is connected to, stretches in arc groove with adjusting annular groove on the outside of the flexible arc groove
Side is connected to clamping internal screw thread channel inner end；The inside of the adjusting annular groove is equipped with interior adjusting screw thread anchor ring；Described is flexible
The outside of arc groove is equipped with outer adjusting screwed ring face；The outer end face of first butt joint body is equipped with connection annular groove；
The second described butt joint body one end is equipped with clamping external screw thread ring body；The inner end of the clamping external screw thread ring body is equipped with outer spiral shell
Line section, the outer end of clamping external screw thread ring body are equipped with annular clamping groove；Connection ring is equipped on the outside of the clamping external screw thread ring body
Face；The connection anchor ring is equipped with T shape and is clamped annular groove；
Installation is multiple in the T shape clamping annular groove compresses elastomer；Described one end for compressing ring is equipped with T shape and is clamped ring tooth；
The ring that compresses is clamped in annular groove by the T shape that the T shape of one end is clamped the connection anchor ring that ring tooth is connected to the second butt joint body；Institute
The ring other end that compresses stated is connected in the connection annular groove of the first butt joint body；The elastomeric resilient extruding that compresses compresses ring
T shape is clamped ring tooth；
The driving clip assembly includes two flexible arc card adapter plates, two telescopic resilience bodies, a driving ring set；It is described
Flexible arc groove in a telescopic resilience body and a flexible arc card adapter plate are installed respectively；The telescopic resilience is held in vitro
Elasticity is pressed on flexible arc groove inner wall, and the inner end elasticity of telescopic resilience body squeezes the outside of flexible arc card adapter plate；It is described
Driving ring set include inner ring body, outer ring body, connection annular slab；The outer ring body is concentrically mounted on the outside of inner ring body；Institute
The inner ring body stated and outer ring body inner end are fixed by connecting annular slab；The inside of the outer ring body is equipped with outer driving screwed ring
Face；The inside of the inner ring body is equipped with interior driving screw thread anchor ring；The outer driving screw thread anchor ring of the outer ring body and flexible arc
The outer adjusting screwed ring face of shape slot carries out screw thread rotation connection；The interior driving screw thread anchor ring and adjusting annular groove of the inner ring body
Interior adjusting screw thread anchor ring carry out screw thread rotation connection；The outer end of the inner ring body is pressed on two flexible arc card adapter plates
Inside；
Second butt joint body is logical by the external screw thread section of clamping external screw thread ring body and the clamping internal screw thread of the first butt joint body
The internal screw thread section in road carries out screw thread rotation connection；The telescopic resilience body elastic force drives flexible arc card adapter plate insertion clamping
In the annular clamping groove of the second ring body；The driving ring set compresses two flexible arcs of driving by the outer end of inner ring body
Card adapter plate carries out stretching motion in flexible arc groove.
2. according to claim 1 compress formula ocean threaded drillpipe, which is characterized in that the driving clip assembly also wraps
Include two guide rods；One guide rod of installation is respectively perpendicular in the flexible arc groove；It is socketed respectively on the guide rod
One telescopic resilience body.
3. according to claim 2 compress formula ocean threaded drillpipe, which is characterized in that in the flexible arc card adapter plate
Equipped with guide groove；The guide rod outer end is fixed on flexible arc groove inner wall, and the inner end of guide rod extends through flexible bullet
Property body after be inserted into the guide groove of flexible arc card adapter plate.
4. according to claim 1 compress formula ocean threaded drillpipe, which is characterized in that the driving clip assembly also wraps
Include two arc drive blocks；The inside of the flexible arc card adapter plate is installed by one arc drive block respectively；The arc
The inside of drive block is equipped with the driven cambered surface of wedge shape；The outer end of the inner ring body is equipped with wedge shape driving anchor ring；The inner ring
Body compresses the driven cambered surface of wedge shape of driving arc drive block by wedge shape driving anchor ring；The wedge shape driving anchor ring carries out axial
When mobile, the driven cambered surface of wedge shape is bonded wedge shape driving anchor ring and is radially slided.
5. according to claim 4 compress formula ocean threaded drillpipe, which is characterized in that the arc drive block is by poly- four
Fluoride material is made.
6. according to claim 1 compress formula ocean threaded drillpipe, which is characterized in that first butt joint body and second
Butt joint body ring body structurc cylindrical.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811312903.8A CN109236196A (en) | 2018-11-06 | 2018-11-06 | One kind compressing formula ocean threaded drillpipe |
| PCT/CN2018/114366 WO2020093270A1 (en) | 2018-11-06 | 2018-11-07 | Pressing-type marine threaded drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811312903.8A CN109236196A (en) | 2018-11-06 | 2018-11-06 | One kind compressing formula ocean threaded drillpipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109236196A true CN109236196A (en) | 2019-01-18 |
Family
ID=65077027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811312903.8A Pending CN109236196A (en) | 2018-11-06 | 2018-11-06 | One kind compressing formula ocean threaded drillpipe |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109236196A (en) |
| WO (1) | WO2020093270A1 (en) |
Cited By (5)
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| CN110318678A (en) * | 2019-04-29 | 2019-10-11 | 江苏和信石油机械有限公司 | A kind of drilling rod for shale gas |
| CN110331938A (en) * | 2019-04-29 | 2019-10-15 | 江苏和信石油机械有限公司 | A kind of gear wheel drilling rod |
| CN112412350A (en) * | 2020-11-29 | 2021-02-26 | 江苏力克石油机械有限公司 | Support and press disconnect-type oil production pipe anticreep device |
| CN114165172A (en) * | 2021-12-14 | 2022-03-11 | 江苏和信石油机械有限公司 | Firm formula of supporting is rescued and is used drilling rod and drill bit structure |
| CN114165168A (en) * | 2021-12-10 | 2022-03-11 | 江苏和信石油机械有限公司 | Dismantle convenient formula rescue and use drilling rod structure |
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| CN107630666A (en) * | 2017-11-15 | 2018-01-26 | 江苏和信石油机械有限公司 | One kind clamps buffer-type ocean threaded drillpipe |
| CN107939306A (en) * | 2017-11-15 | 2018-04-20 | 江苏和信石油机械有限公司 | A kind of anti-corrosion offset-type ocean threaded drillpipe |
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| CN110318678A (en) * | 2019-04-29 | 2019-10-11 | 江苏和信石油机械有限公司 | A kind of drilling rod for shale gas |
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| CN110318678B (en) * | 2019-04-29 | 2021-04-09 | 江苏和信石油机械有限公司 | Drill rod for shale gas |
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| CN114165168A (en) * | 2021-12-10 | 2022-03-11 | 江苏和信石油机械有限公司 | Dismantle convenient formula rescue and use drilling rod structure |
| CN114165168B (en) * | 2021-12-10 | 2023-10-31 | 江苏和信石油机械有限公司 | Dismantle convenient formula rescue and use drilling rod structure |
| CN114165172A (en) * | 2021-12-14 | 2022-03-11 | 江苏和信石油机械有限公司 | Firm formula of supporting is rescued and is used drilling rod and drill bit structure |
| CN114165172B (en) * | 2021-12-14 | 2023-07-25 | 江苏和信石油机械有限公司 | Firm pressure formula is rescued and is used drilling rod and drill bit structure |
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