CN107939306A - A kind of anti-corrosion offset-type ocean threaded drillpipe - Google Patents
A kind of anti-corrosion offset-type ocean threaded drillpipe Download PDFInfo
- Publication number
- CN107939306A CN107939306A CN201711128075.8A CN201711128075A CN107939306A CN 107939306 A CN107939306 A CN 107939306A CN 201711128075 A CN201711128075 A CN 201711128075A CN 107939306 A CN107939306 A CN 107939306A
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- Prior art keywords
- annular
- clamping
- connection
- corrosion
- groove
- Prior art date
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- Granted
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 41
- 238000005553 drilling Methods 0.000 claims abstract description 26
- 230000013011 mating Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 4
- 238000007667 floating Methods 0.000 claims description 43
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000003139 buffering effect Effects 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 2
- 238000003032 molecular docking Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 230000002421 anti-septic effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 210000002445 nipple Anatomy 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000007704 transition Effects 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
-
- 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
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
The invention discloses a kind of anti-corrosion offset-type ocean threaded drillpipe, including drilling rod body, male connection, female adapter, clamping buffer gear, anti-corrosion overcoat；The anti-corrosion overcoat is in ring body structurc；Connection curved surface is equipped with the inside of the anti-corrosion overcoat；The drilling rod outer body is equipped with curved surface mating surface；The anti-corrosion overcoat is socketed in drilling rod outer body；The connection curved surface of the anti-corrosion overcoat and the curved surface mating surface of drilling rod body cure connection；The anti-corrosion overcoat is made of polytetrafluoroethylene material.The present invention is socketed anti-corrosion overcoat in drilling rod outer body so that antiseptic property of the invention obtains the lifting of matter, and is cured by connecting curved surface and curved surface mating surface so that connection is more firm.
Description
Technical field
The present invention relates to a kind of anti-corrosion offset-type ocean threaded drillpipe.
Background technology
At present, marine petroleum exploitation generally uses oil drill rocker, and 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 oil, oil drill rocker
Often connection can occur at nipple to misplace and fracture built on the sand, since the connection of oil drill rocker is that end-to-end screw thread connects
Connect, be all rigid connection, the leeway not buffered, is eliminated once dislocation occurs and bends whole drilling rod, in addition, drilling rod is anti-
Rotten performance is not high, and service life is short.
The content of the invention
In view of the above shortcomings of the prior art part, the present invention solve the problems, such as be：A kind of connection of offer is reliable, buffering benefit
Repay the ocean threaded drillpipe that performance is high, anti-corrosive properties are strong.
To solve the above problems, the technical solution that the present invention takes is as follows：
A kind of anti-corrosion offset-type ocean threaded drillpipe, including drilling rod body, male connection, female adapter, clamping buffer
Structure, anti-corrosion overcoat；The drilling rod body both ends are respectively equipped with male connection and female adapter；The male connection
Equipped with annular mounting groove；The inner side of the annular mounting groove is equipped with external screw thread；The clamping buffer gear includes two folders
Tight plate and multiple elastic force connectors；Two clamping plates are fixed on the lateral wall of annular mounting groove by elastic force connector
On；Two arc-shaped structures of clamping plate；Two clamping plates are oppositely arranged in annular mounting groove；Described is interior
Nipple is equipped with the ring body part of loop configuration；The inner side of the ring body part is equipped with internal thread；The ring body part passes through interior
Screw thread is connected on the external screw thread of annular mounting groove；Two clamping plates compress the outside for being clamped in ring body part；Institute
The anti-corrosion overcoat stated is in ring body structurc；Connection curved surface is equipped with the inside of the anti-corrosion overcoat；The drilling rod outer body is equipped with
Curved surface mating surface；The anti-corrosion overcoat is socketed in drilling rod outer body；The connection curved surface and drilling rod sheet of the anti-corrosion overcoat
The curved surface mating surface of body cures connection；The anti-corrosion overcoat is made of polytetrafluoroethylene material.
Further, two clamping plates are distributed on same annular trace.
Further, the end face of the male connection is equipped with two annular floating grooves；In the male connection
Two annular floating grooves are located at the both sides of annular mounting groove；The end face of the female adapter is equipped with two annular floatings
Groove；Two annular floating grooves in the female adapter are located at the both sides of ring body part；The ring of the annular mounting groove both sides
Shape floating trough and the annular floating groove location of ring body part both sides correspondence are simultaneously mutually butted；The annular of the annular mounting groove both sides
Floating trough and the annular floating groove of ring body part both sides dock to form annular buckling groove；Annular is connected with the annular buckling groove
Elastic component.
Further, the diameter of section of the ring elastic parts is more than the diameter of annular buckling groove；The annular installation
Floating gap is left among the annular floating groove of groove both sides and the annular floating groove of ring body part both sides.
Further, the equal semicircular in shape structure of the annular floating groove.
Further, two clamping adjusting mechanisms are further included；One clamping adjusting machine is installed respectively on the outside of the clamping plate
Structure；The clamping adjusting mechanism includes adjusting rod and clamping block；Screw thread is equipped with outside the adjusting rod；The external screw thread
Connector sidepiece is equipped with threaded hole；The threaded hole connection annular mounting groove；The adjusting rod is by being threadably mounted at screw thread
In hole；The medial end of the adjusting rod, which is equipped with, rotates annular buckling groove；The clamping block is installed on the outside of clamping plate；
The rotation annular buckling groove of the adjusting rod medial end is rotated and is connected on clamping block.
Further, the rotation annular buckling groove and clamping block structure in a ring；The rotation annular buckling groove
With the T-shaped structure in longitudinal cross-section of clamping block.
Further, the outside of the adjusting rod is equipped with annular connecting plate；The male connection sidepiece is equipped with connection
Cavity；The connection cavity is connected with the threaded hole of male connection sidepiece；About two are equipped with the connection cavity
The annular clamping spring of distribution；Annular connecting plate on the outside of the adjusting rod is installed in connection cavity；The annular connection
The both sides up and down of plate compress annular clamping spring；The annular clamping spring is compressed in annular connecting plate and connection cavity
Between top and bottom sidewall.
Beneficial effects of the present invention
1. the present invention is socketed anti-corrosion overcoat in drilling rod outer body so that antiseptic property of the invention obtains the lifting of matter, and
Cured by connecting curved surface and curved surface mating surface so that connection is more firm；The present invention is equipped with annular in male connection
Mounting groove, is equipped with the ring body part of loop configuration in female adapter, is threaded in annular mounting groove, passed through by ring body part
Two clamping plates compress the outside for being clamped in ring body part, and clamping plate is to be fixed on annular mounting groove by multiple elastic force connectors
On lateral wall, can both ring body part be clamped it is also possible that ring body part is radially obtaining certain elasticity by being arranged such
Telescopic floating compensation buffering, avoids being ruptured without abrasion caused by buffering for traditional rigid connection.
2. the present invention is equipped with two annular floating grooves, two annulars on the end face of male connection and female adapter
Floating trough docks buckling groove in a ring, is connected with ring elastic parts in annular buckling groove, thus by cleverly structure design, makes
Obtaining the contact surface of male connection and female adapter realizes " soft connection " so that male connection and female adapter exist
It is subject to there can be certain axially and radially floating buffer leeway when foreign impacts, avoid traditional rigid connection twists off disadvantage
End.
3. the present invention is additionally arranged clamping adjusting mechanism, folder can be driven by clamping the rotation of the adjusting rod in adjusting mechanism
Tight plate moves inwardly or laterally, so as to control clamping plate to ring body part clamping degree, while passes through adjusting rod sidepiece
Annular connecting plate compresses cooperation with annular clamping spring so that adjusting rod is run more steady, and adjusting is more stablized.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the sectional view of male connection of the present invention.
Fig. 3 is the section view enlarged structure schematic diagram of side of the present invention.
Fig. 4 is that the section view of side of the present invention splits enlarged structure schematic diagram.
Fig. 5 is the connection enlarged structure schematic diagram that the present invention clamps adjusting mechanism and male connection.
Fig. 6 is the fractionation enlarged structure schematic diagram of the tight adjusting mechanism of the present invention and male connection.
Fig. 7 is the schematic cross-section of anti-corrosion overcoat of the present invention.
Fig. 8 is the schematic cross-section of drilling rod body of the present invention.
Embodiment
Present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1
As shown in Figures 1 to 4, a kind of anti-corrosion offset-type ocean threaded drillpipe, including drilling rod body 1, male connection 2, internal thread
Connector 3, clamp buffer gear 4, anti-corrosion overcoat 9.1 both ends of drilling rod body are respectively equipped with male connection 2 and internal thread
Connector 3.The male connection 2 is equipped with annular mounting groove 21.The inner side of the annular mounting groove 21 is equipped with external screw thread 23.
The clamping buffer gear 4 includes two clamping plates 41 and multiple elastic force connectors 42.Two clamping plates 41 pass through
Elastic force connector 42 is fixed on the lateral wall of annular mounting groove 21.Two clamping plates, the 41 arc-shaped structure.Described
Two clamping plates 41 are oppositely arranged in annular mounting groove 21.The female adapter 3 is equipped with the ring body part 31 of loop configuration.
The inner side of the ring body part 31 is equipped with internal thread 32.The ring body part 31 is threaded in annular installation by internal thread 32
On the external screw thread 23 of groove 21.Two clamping plates 41 compress the outside for being clamped in ring body part 31.Further preferably, it is described
Two clamping plates 41 are distributed on same annular trace.As shown in fig. 7, the anti-corrosion overcoat 9 is in ring body structurc.Described
The inner side of anti-corrosion overcoat 9 is equipped with connection curved surface 91.As shown in figure 8, the outside of drilling rod body 1 is equipped with curved surface mating surface 11.Institute
The anti-corrosion overcoat 9 stated is socketed in the outside of drilling rod body 1.The connection curved surface 91 of the anti-corrosion overcoat 9 and the curved surface of drilling rod body 1
Mating surface 11 cures connection.The anti-corrosion overcoat 9 is made of polytetrafluoroethylene material.
The present invention takes over control rotten overcoat 9 in 1 outer sheath of drilling rod body so that and antiseptic property of the invention obtains the lifting of matter,
And cured by connecting curved surface 91 and curved surface mating surface 11 so that connection is more firm.The present invention is in male connection 2
Equipped with annular mounting groove 21, the ring body part 31 of loop configuration is equipped with female adapter 3, ring is threaded in by ring body part 31
In shape mounting groove 21, the outside for being clamped in ring body part 31 is compressed by two clamping plates 41, clamping plate 41 is by multiple elastic force
Connector 42 is fixed on the lateral wall of annular mounting groove 21, be arranged such ring body part 31 can be clamped or
So that ring body part 31 is radially obtaining certain elastic telescopic floating compensation buffering, avoid traditional rigid connection without buffering
Caused by wear rupture.
Embodiment 2
As shown in Figures 3 and 4, for the present embodiment with reference to embodiment 2, difference is that the end face of the male connection 2 is equipped with two
A annular floating groove 7.Two annular floating grooves 7 in the male connection 2 are located at the both sides of annular mounting groove 21.It is described
The end face of female adapter 3 be equipped with two annular floating grooves 7.Two annular floating grooves 7 in the female adapter 3
Positioned at the both sides of ring body part 31.The annular floating of 31 both sides of annular floating groove 7 and ring body part of 21 both sides of annular mounting groove
7 position correspondence of groove is simultaneously mutually butted.The annular of 31 both sides of annular floating groove 7 and ring body part of 21 both sides of annular mounting groove
The docking of floating trough 7 forms annular buckling groove.Ring elastic parts 6 are connected with the annular buckling groove.Further preferably, it is described
The diameter of sections of ring elastic parts 6 be more than the diameter of annular buckling groove.The annular floating of 21 both sides of annular mounting groove
Floating gap 8 is left among the annular floating groove 7 of 31 both sides of groove and ring body part.Further preferably, the annular floating groove 7 is equal
Semicircular in shape structure.
The present invention is equipped with two annular floating grooves 7, two rings on the end face of male connection 2 and female adapter 3
Shape floating trough 7 docks buckling groove in a ring, and ring elastic parts 6 are connected with annular buckling groove, is set thus by cleverly structure
Meter so that the contact surface of male connection 2 and female adapter 3 realizes " soft connection " so that male connection 2 and interior spiral shell
Line connector 3 can have certain axially and radially floating buffer leeway when foreign impacts are subject to, and avoid traditional rigid connection
Twist off drawback.
Embodiment 3
As it can be seen in figures 5 and 6, the present embodiment, with reference to embodiment 1, difference is to further include two clamping adjusting mechanisms 5.Described
The outside of clamping plate 41 is installed by one clamping adjusting mechanism 5 respectively.The clamping adjusting mechanism 5 includes adjusting rod 51 and clamping block
53.The outside of adjusting rod 51 is equipped with screw thread 512.2 sidepiece of male connection is equipped with threaded hole 25.The screw thread
Hole 25 connects annular mounting groove 22.The adjusting rod 51 is by being threadably mounted in threaded hole 25.The adjusting rod 51
Medial end, which is equipped with, rotates annular buckling groove 511.The clamping block 53 is installed on the outside of clamping plate 41.The adjusting rod
The rotation annular buckling groove 511 of 51 medial ends is rotated and is connected on clamping block 53.Further limited, described rotation annular snap
Access slot 511 and clamping block 53 structure in a ring.The longitudinal cross-section of the annular buckling groove 511 of the rotation and clamping block 53 is in T
Shape structure.The clamping degree of clamping plate 41 can be adjusted by adjusting rod 51.Further preferably, it is steady for the ease of adjusting rod 51
Transition, the outside of the adjusting rod 51 is equipped with annular connecting plate 52.The male connection sidepiece is equipped with connection cavity
22.The connection cavity 22 is connected with the threaded hole 25 of 2 sidepiece of male connection.Two are equipped with the connection cavity 22
The annular clamping spring 24 being distributed up and down.The annular connecting plate 52 in the outside of adjusting rod 51 is installed in connection cavity 22.Institute
The both sides up and down for the annular connecting plate 52 stated compress annular clamping spring 24.Annular clamping 24 elastic compression of spring is in ring
Between shape connecting plate 52 and connection 22 top and bottom sidewall of cavity.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (8)
1. a kind of anti-corrosion offset-type ocean threaded drillpipe, it is characterised in that connect including drilling rod body, male connection, internal thread
Head, clamp buffer gear, anti-corrosion overcoat；The drilling rod body both ends are respectively equipped with male connection and female adapter；Institute
The male connection stated is equipped with annular mounting groove；The inner side of the annular mounting groove is equipped with external screw thread；The clamping buffering
Mechanism includes two clamping plates and multiple elastic force connectors；Two clamping plates are fixed on annular peace by elastic force connector
On the lateral wall of tankage；Two arc-shaped structures of clamping plate；Two clamping plates are opposite in annular mounting groove
Set；The female adapter is equipped with the ring body part of loop configuration；The inner side of the ring body part is equipped with internal thread；Described
Ring body part is threaded on the external screw thread of annular mounting groove by internal thread；Two clamping plates, which compress, is clamped in ring body
The outside of part；The anti-corrosion overcoat is in ring body structurc；Connection curved surface is equipped with the inside of the anti-corrosion overcoat；The drilling rod sheet
External side is equipped with curved surface mating surface；The anti-corrosion overcoat is socketed in drilling rod outer body；The connection of the anti-corrosion overcoat is bent
The curved surface mating surface of face and drilling rod body cures connection；The anti-corrosion overcoat is made of polytetrafluoroethylene material.
2. anti-corrosion offset-type ocean threaded drillpipe according to claim 1, it is characterised in that two clamping plates point
Cloth is on same annular trace.
3. anti-corrosion offset-type ocean threaded drillpipe according to claim 1, it is characterised in that the end of the male connection
Face is equipped with two annular floating grooves；Two annular floating grooves in the male connection are located at the two of annular mounting groove
Side；The end face of the female adapter is equipped with two annular floating grooves；Two annulars in the female adapter are floated
Dynamic groove is located at the both sides of ring body part；The annular floating groove of the annular mounting groove both sides and the annular floating groove position of ring body part both sides
Put corresponding and be mutually butted；The annular floating groove of the annular mounting groove both sides and the annular floating groove docking of ring body part both sides
Form annular buckling groove；Ring elastic parts are connected with the annular buckling groove.
4. anti-corrosion offset-type ocean threaded drillpipe according to claim 3, it is characterised in that the ring elastic parts
Diameter of section is more than the diameter of annular buckling groove；The annular floating groove of the annular mounting groove both sides and the ring of ring body part both sides
Floating gap is left among shape floating trough.
5. anti-corrosion offset-type ocean threaded drillpipe according to claim 3, it is characterised in that the annular floating groove is equal
Semicircular in shape structure.
6. anti-corrosion offset-type ocean threaded drillpipe according to claim 1, it is characterised in that further include two and clamp adjusting
Mechanism；One clamping adjusting mechanism is installed respectively on the outside of the clamping plate；The clamping adjusting mechanism include adjusting rod and
Clamping block；Screw thread is equipped with outside the adjusting rod；The male connection sidepiece is equipped with threaded hole；The threaded hole connects
Logical annular mounting groove；The adjusting rod is by being threadably mounted in threaded hole；The medial end of the adjusting rod, which is equipped with, to be turned
Rotating ring shape buckling groove；The clamping block is installed on the outside of clamping plate；The rotation annular snap of the adjusting rod medial end
Access slot is rotated and is connected on clamping block.
7. anti-corrosion offset-type ocean threaded drillpipe according to claim 6, it is characterised in that the rotation annular clamping
Groove and clamping block structure in a ring；The T-shaped structure in longitudinal cross-section of the annular buckling groove of the rotation and clamping block.
8. anti-corrosion offset-type ocean threaded drillpipe according to claim 6, it is characterised in that the outside of the adjusting rod
Equipped with annular connecting plate；The male connection sidepiece is equipped with connection cavity；The connection cavity and male connection side
The threaded hole connection in portion；The annular clamping spring of about two distributions is equipped with the connection cavity；On the outside of the adjusting rod
Annular connecting plate be installed on connection cavity in；The both sides up and down of the annular connecting plate compress annular clamping spring；It is described
Annular clamping spring be compressed in annular connecting plate and connection cavity top and bottom sidewall between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711128075.8A CN107939306B (en) | 2017-11-15 | 2017-11-15 | A kind of anti-corrosion offset-type ocean threaded drillpipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711128075.8A CN107939306B (en) | 2017-11-15 | 2017-11-15 | A kind of anti-corrosion offset-type ocean threaded drillpipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107939306A true CN107939306A (en) | 2018-04-20 |
| CN107939306B CN107939306B (en) | 2018-12-28 |
Family
ID=61932288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711128075.8A Active CN107939306B (en) | 2017-11-15 | 2017-11-15 | A kind of anti-corrosion offset-type ocean threaded drillpipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107939306B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184587A (en) * | 2018-11-06 | 2019-01-11 | 江苏和信石油机械有限公司 | A kind of slider-actuated formula ocean threaded drillpipe |
| CN109209253A (en) * | 2018-11-06 | 2019-01-15 | 江苏和信石油机械有限公司 | A kind of sealing compresses formula ocean threaded drillpipe |
| CN109236197A (en) * | 2018-11-06 | 2019-01-18 | 江苏和信石油机械有限公司 | A kind of guiding push type ocean threaded drillpipe |
| CN109236196A (en) * | 2018-11-06 | 2019-01-18 | 江苏和信石油机械有限公司 | One kind compressing formula ocean threaded drillpipe |
| CN109441365A (en) * | 2018-11-06 | 2019-03-08 | 江苏和信石油机械有限公司 | A kind of link formula ocean threaded drillpipe |
| CN109749147A (en) * | 2018-12-30 | 2019-05-14 | 广德天鹏实业有限公司 | A kind of ozone-resistant braided construction hose and its production and processing method |
| CN111271004A (en) * | 2020-03-17 | 2020-06-12 | 江苏和信石油机械有限公司 | High-torsion-resistance full-sealing locking threaded connection structure |
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| RU2009144378A (en) * | 2009-11-30 | 2011-06-10 | Открытое Акционерное Общество "Акционерная Нефтяная Компания" "Башнефть" (Оао "Анк "Башнефть) (Ru) | HYDRAULIC CALIBRATOR-CENTRATOR (KHZ) |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184587A (en) * | 2018-11-06 | 2019-01-11 | 江苏和信石油机械有限公司 | A kind of slider-actuated formula ocean threaded drillpipe |
| CN109209253A (en) * | 2018-11-06 | 2019-01-15 | 江苏和信石油机械有限公司 | A kind of sealing compresses formula ocean threaded drillpipe |
| CN109236197A (en) * | 2018-11-06 | 2019-01-18 | 江苏和信石油机械有限公司 | A kind of guiding push type ocean threaded drillpipe |
| CN109236196A (en) * | 2018-11-06 | 2019-01-18 | 江苏和信石油机械有限公司 | One kind compressing formula ocean threaded drillpipe |
| CN109441365A (en) * | 2018-11-06 | 2019-03-08 | 江苏和信石油机械有限公司 | A kind of link formula ocean threaded drillpipe |
| CN109749147A (en) * | 2018-12-30 | 2019-05-14 | 广德天鹏实业有限公司 | A kind of ozone-resistant braided construction hose and its production and processing method |
| CN111271004A (en) * | 2020-03-17 | 2020-06-12 | 江苏和信石油机械有限公司 | High-torsion-resistance full-sealing locking threaded connection structure |
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| Publication number | Publication date |
|---|---|
| CN107939306B (en) | 2018-12-28 |
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