CN115977537A - Rotary control head lower sleeve assembly and J-shaped groove taking and placing tool - Google Patents
Rotary control head lower sleeve assembly and J-shaped groove taking and placing tool Download PDFInfo
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- CN115977537A CN115977537A CN202310013408.1A CN202310013408A CN115977537A CN 115977537 A CN115977537 A CN 115977537A CN 202310013408 A CN202310013408 A CN 202310013408A CN 115977537 A CN115977537 A CN 115977537A
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- sleeve
- casing
- control head
- rotary control
- shaped groove
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- 238000005553 drilling Methods 0.000 claims abstract description 46
- 230000001681 protective effect Effects 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 25
- 239000003292 glue Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a rotary control head lower sleeve assembly and a J-shaped groove taking and placing tool, which comprise a sleeve protective sleeve, a flange connecting disc, a lower sleeve rubber core and a J-shaped groove taking and placing tool, wherein the lower end of the sleeve protective sleeve is connected with the upper end of the lower sleeve rubber core through the flange connecting disc, a plurality of J-shaped grooves are formed in the sleeve protective sleeve, and are matched with the J-shaped groove taking and placing tool, so that the transverse and axial displacement of the lower sleeve assembly is well ensured, the lower sleeve assembly can be conveniently sent and taken back, the sleeve is better protected from being damaged, and the stable screwing action is ensured. The invention can assist the relative workers of casing running to complete the casing running work more quickly and better, can strip the casing quickly, and realizes the quick and correct setting of the casing, thereby saving the time of a drilling machine.
Description
Technical Field
The invention relates to the technical field of petroleum drilling, in particular to a rotary control head casing assembly and a J-shaped groove taking and placing tool.
Background
In the technical field of petroleum, a rotary control head system is pressure wellhead control equipment necessary for well drilling, the rotary control head system has the functions of bearing wellhead pressure and realizing rotary sealing, and the rotary sealing is completed by a rubber core assembly.
Improper casing running mode is one of the important reasons for causing the casing problem, 10% -12% of the drilling machine time is spent in the casing running process, the conventional casing running mode is complicated and difficult to control accurately, operations such as drilling fluid circulation and casing string rotation cannot be performed during the casing running process, and high operation risks exist.
Disclosure of Invention
In order to solve the problems, the invention provides a casing running assembly of a rotary control head and a J-shaped groove taking and placing tool, so that the casing running is quickly and correctly placed, and the time of a drilling machine is saved.
The invention adopts the following technical scheme:
a rotary control head lower sleeve assembly and a J-shaped groove taking and placing tool comprise a rotary control head lower sleeve assembly and a J-shaped groove taking and placing tool which is matched with the rotary control head lower sleeve assembly.
The utility model provides a rotary control head case assembly, glues the core including sleeve pipe protective sheath, flange connection dish, case, sleeve pipe protective sheath lower extreme is glued the core upper end through flange connection dish connection case, the inside a plurality of J type grooves that are equipped with of sleeve pipe protective sheath, get with J type groove and put the instrument and cooperate, the horizontal or axial displacement who gets the instrument in J type groove gets fine assurance. The lower sleeve assembly can be conveniently sent in and taken back, the sleeve is better protected from being damaged, and the stable screwing action is ensured.
Preferably, the upper and lower parts of the sleeve protective sleeve are respectively provided with an upper O-shaped sealing ring and a lower O-shaped sealing ring, and the double sealing ensures the sealing performance.
Preferably, sleeve pipe protective sheath upper end outer wall is equipped with two internal thread holes for the cooperation rings, the hoist and mount of being convenient for.
Preferably, a locking clamping groove is formed in the middle of the outer wall of the sleeve protective sleeve and used for hydraulic clamping and positioning during loading. And a positioning inclined plane is arranged below the locking clamping groove and used for positioning the lower casing tool.
Preferably, a flange plate O-shaped sealing ring is arranged on the outer wall, in contact with the sleeve protective sleeve, of the flange connection disc, so that the sealing performance of the assembly is guaranteed.
Preferably, the sleeve protective sleeve is connected with the flange connection disc through an inner hexagon screw.
Preferably, the lower sleeve rubber core is connected with the flange connection disc through a plurality of rubber core screw caps matched with a plurality of lower sleeve rubber core screws.
Preferably, the upper end opening of the sleeve protective sleeve is an inclined plane and is funnel-shaped, and a good guiding effect is achieved when the J-shaped groove taking and placing tool is placed below the sleeve protective sleeve. The middle lower part of the outer side of the casing protective sleeve is also provided with an inclined plane for positioning a lower casing tool.
Preferably, the upper end opening of the J-shaped groove is an inclined plane, is funnel-shaped and has a guiding function.
Preferably, the lower casing rubber core is a pre-tightening type casing rubber core, so that a certain interference magnitude exists between the lower casing rubber core and the casing, a good sealing effect can be achieved even if the lower casing rubber core is abraded to a certain extent, and the sealing reliability is guaranteed. Due to the interference fit, certain sealing pressure exists initially between the sleeve and the rubber core of the lower sleeve, so that the sealing reliability is improved.
Preferably, different lower casing rubber cores correspond to different sizes of casings, the lower casing rubber cores can be replaced relatively, the sealing performance is guaranteed, and replacement is convenient and rapid.
Preferably, when the flange connection disc is connected with the sleeve protection sleeve, grease is smeared on the outer circle of the flange connection disc to play a role in lubrication protection, so that the flange connection disc is convenient to mount and adjust the position.
A J-slot pick and place tool, cooperating with a rotating control head lower casing assembly according to claim 9, comprising a longitudinal stop, a boss pin, a through hole, a positioning step surface, a transverse stop, a threaded central shaft with a drilling tool; the upper end and the lower end of the central shaft with the drilling tool thread are provided with the drilling tool thread, so that the drilling tool can be connected with a related drilling tool, and the lifting is convenient. An external disk is arranged in the middle of the threaded central shaft with the drilling tool, a longitudinal limiting device is arranged at the position where the upper end of the external disk is connected with the threaded central shaft with the drilling tool, and a transverse limiting device is arranged at the position where the lower end of the external disk is connected with the threaded central shaft with the drilling tool; the longitudinal limiting device is fixedly embedded between the threaded central shaft with the drilling tool and the external disk by two semicircular rings through bolts, and the transverse limiting device is fixed by the bolts in the form of keys at the lower part of the disk to avoid relative movement during rotation. The outer disc is provided with a vertical through hole and a positioning step surface, and the vertical through hole can balance the up-down pressure and pass through slurry; the outer disc is provided with protruding pins, and the positions and the number of the protruding pins are matched with the J-shaped grooves to send and take down the sleeve assembly. The outside disc still is equipped with two and carries a silk screw hole, can load and dismantle outside disc comparatively conveniently.
The invention has the beneficial effects that: the J-shaped groove is matched with the J-shaped groove taking and placing tool, so that the transverse and axial displacement of the casing running assembly is well ensured, the casing running assembly can be conveniently sent in and taken back, the casing is better protected from being damaged, the stable screwing action is ensured, the casing running work can be completed more quickly and better by workers related to casing running, the casing can be stripped quickly, and the casing can be quickly and correctly placed, so that the time of a drilling machine is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a flange connection plate according to the present invention;
fig. 3 and fig. 4 are schematic views of a structure of a J-slot pick-and-place tool according to the present invention.
In the figure:
1-casing protection sleeve; 2-flange connection disc; 3-setting a rubber core of the sleeve; 4-J type groove; 5-installing an O-shaped sealing ring; 6-an internal threaded hole; 7-locking the clamping groove; 8-positioning the inclined plane; 9-lower O-ring seal; 10-flange O-ring seal; 11-glue core screw cap; 12-socket head cap screw; 13-lower sleeve rubber core screw; 14-longitudinal stop means; 15-a boss pin; 16-a via; 17-positioning the step surface; 18-a lateral stop device; 19-threaded central shaft with drilling tool.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs.
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, a rotary control head lower casing assembly, including sleeve pipe protective sheath 1, flange connection pad 2, lower casing rubber core 3, the 3 upper ends of lower casing rubber core are connected through flange connection pad 2 to 1 lower extreme of sleeve pipe protective sheath, 1 inside a plurality of J type grooves 4 that are equipped with of sleeve pipe protective sheath, this embodiment is equipped with 4, and evenly distributed. The J-shaped groove 4 taking and placing tools are matched, and the transverse or axial displacement of the J-shaped groove 4 taking and placing tools is well ensured. The lower sleeve assembly can be conveniently sent in and taken back, the sleeve is better protected from being damaged, and the stable screwing action is ensured.
An upper O-shaped sealing ring 5 and a lower O-shaped sealing ring 9 are respectively arranged on the upper part and the lower part of the sleeve protective sleeve 1, and the sealing performance of the sleeve protective sleeve is ensured by double sealing.
The outer wall of the upper end of the sleeve protective sleeve 1 is provided with two inner threaded holes 6 which are used for being matched with a lifting ring and facilitating lifting.
And a locking clamping groove 7 is arranged in the middle of the outer wall of the sleeve protective sleeve 1 and used for hydraulic clamping and positioning during loading. And a positioning inclined plane 8 is arranged below the locking clamping groove 7 and used for positioning a casing running tool.
As shown in fig. 2, a flange O-ring 10 is arranged on the outer wall of the flange connection disc 2 contacting the sleeve protection sleeve 1, so as to ensure the sealing performance of the assembly. The sleeve protective sleeve 1 is connected with the flange connection disc 2 through an inner hexagon screw 12. The lower sleeve rubber core 3 is connected with the flange connection disc 2 through a plurality of rubber core screw caps 11 matched with a plurality of lower sleeve rubber core screws 13. Six threaded holes are uniformly formed in the embodiment, so that the rubber core screw cap 11 and the lower sleeve rubber core screw 13 are respectively six.
The upper end opening of the sleeve protective sleeve 1 is an inclined plane and is funnel-shaped, and a good guiding effect is achieved when the J-shaped groove 4 is placed under the sleeve protective sleeve.
The upper end opening of the J-shaped groove is an inclined plane and is funnel-shaped, and the J-shaped groove has a guiding function.
The lower casing rubber core 3 adopts a pre-tightening type casing rubber core, so that a certain interference magnitude exists between the lower casing rubber core 3 and the casing, a good sealing effect can be achieved even if the lower casing rubber core 3 is abraded to a certain extent, and the sealing reliability is guaranteed. Due to the interference fit, a certain sealing pressure exists initially between the sleeve and the rubber core 3 of the lower casing, so that the sealing reliability is improved.
Different lower casing rubber cores 3 correspond different size sleeve pipes, can carry out relevant change to lower casing rubber core 3, have guaranteed its leakproofness, change convenient and fast.
When the flange connection disc 2 is connected with the sleeve protective sleeve 1, grease oil is smeared on the outer circle of the flange connection disc to play a role in lubrication protection, so that the flange connection disc is convenient to install and adjust the position.
As shown in fig. 3 and 4, a J-slot pick and place tool, which is matched with a rotary control head lower casing assembly of claim 9, comprises a longitudinal limiting device 14, a convex pin 15, a through hole 16, a positioning step surface 17, a transverse limiting device 18, a threaded central shaft 19 with a drilling tool; the upper end and the lower end of the central shaft 19 with the drilling tool thread are provided with drilling tool threads which can be connected with related drilling tools, so that the lifting is convenient. An external disc is arranged in the middle of the threaded central shaft 19 with the drilling tool, a longitudinal limiting device 14 is arranged at the position where the upper end of the external disc is connected with the threaded central shaft 19 with the drilling tool, and a transverse limiting device 18 is arranged at the position where the lower end of the external disc is connected with the threaded central shaft 19 with the drilling tool; the longitudinal limiting device 14 is fixedly embedded between the threaded central shaft 19 with the drilling tool and the outer disk by two semicircular rings through bolts, and the transverse limiting device 18 is fixed by the bolts in a key mode at the lower part of the disk to avoid relative movement during rotation. The outer disc is provided with a vertical through hole 16 and a positioning step surface 17, and the vertical through hole 16 can balance the upper and lower pressure and pass through slurry; the outer disk is provided with convex pins 15, the positions and the number of the convex pins 15 are matched with the J-shaped grooves 4 to send and take off the sleeve assembly, and the number of the convex pins 15 is 4 in the embodiment. The outside disc still is equipped with two and carries a silk screw hole, can load and dismantle outside disc comparatively conveniently.
The installation process comprises the following steps:
connecting a J-shaped groove taking and delivering tool to a drilling tool, and placing a lower casing assembly on a turntable; aligning 4 convex pins 15 on the J-shaped groove taking and delivering tool with the J-shaped groove 4, putting the J-shaped groove 4 in the J-shaped groove taking and delivering tool, and rotationally locking the J-shaped groove taking and delivering tool; ensuring that a hydraulic locking claw of a shell of the hydraulic pump station is not opened; unloading the rotary table and the large and small square tiles, descending the lower casing assembly into the shell, and pressing down the lower casing assembly to a pressure not exceeding 5,000lbs (2.268T) to verify whether the lower casing assembly is completely seated into the shell or not; and the hydraulic locking claw is locked by operating the hydraulic pump station, so that the lower sleeve assembly is locked in the shell. 5,000lbs (2.268T) upward lifting force is used for verifying whether the anti-abrasion sleeve in the shell is locked or not; after the locking is verified to be in place, the drilling tool is lowered to release the upward pulling force, the drilling tool is rotated clockwise by 20 degrees, the drilling tool is slowly lifted, the change of a hanging weight table of the drilling tool is observed in the lifting process, the hanging weight is not increased abnormally, the drilling tool is lifted by at least 145mm, and the fact that the J-shaped groove taking and delivering tool is completely separated from the wear-resistant sleeve in the shell is proved; lifting the J-shaped groove taking and delivering tool to get out of the rotary table surface, detaching the J-shaped groove taking and delivering tool from the drilling tool, and cleaning and then placing the J-shaped groove taking and delivering tool in a protection area; and slowly lowering the casing to the top of the casing running assembly, slowly lowering the casing until the casing completely enters and passes through the rubber core, and carrying out normal casing running operation by casing running operators according to the casing running operation flow.
The retrieval process comprises the following steps:
connecting a J-shaped groove taking and delivering tool to the drilling tool, and detaching the large and small square tiles of the turntable; lowering a J-shaped groove taking and delivering tool into the shell by observing the change of the hanging weight of a hanging weight surface of the drilling tool until the J-shaped groove taking and delivering tool is lowered to the top of the casing assembly, and then slowly lowering the J-shaped groove taking and delivering tool until the hanging weight of the drilling tool is reduced by no more than 5,000lbs (2.268T) so as to verify that the convex pin 15 of the J-shaped groove taking and delivering tool is completely contacted with the top of the wear-resistant sleeve in the shell; and lifting the drilling tool to release the downward pressure, rotating the drilling tool to enable the convex pin 15 to fall into the J-shaped groove 4, and rotating the drilling tool by 90 degrees at the maximum until the convex pin 15 finds the opening of the J-shaped groove 4. Slowly lowering the drilling tool for about 145mm until the convex pin 15 falls into the bottom of the J-shaped groove 4, rotating the J-shaped groove for 20 degrees anticlockwise, and connecting and locking the J-shaped groove feeding tool with the casing assembly; verifying whether the J-shaped groove taking and delivering tool is locked in the J-shaped groove 4 by using the tension of 5,000lbs (2.268T); opening a shell hydraulic locking claw by operating a hydraulic pump station; lifting the casing assembly and the J-shaped groove taking and delivering tool above the surface of the drill floor rotating disc, dismounting the casing assembly, and dismounting the J-shaped groove taking and delivering tool from the drilling tool; and (4) cleaning the lower casing assembly and the J-shaped groove taking and conveying tool, and then placing the lower casing assembly and the J-shaped groove taking and conveying tool into a pipe protecting area, and finishing the operation.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a rotary control head lower casing assembly, its characterized in that, glues core (3) including sleeve pipe protective sheath (1), flange connection dish (2), lower casing, sleeve pipe protective sheath (1) lower extreme passes through flange connection dish (2) and connects lower casing and glue core (3) upper end, sleeve pipe protective sheath (1) inside is equipped with a plurality of J type grooves (4).
2. The rotary control head casing assembly according to claim 1, wherein the casing protection sleeve (1) is provided with an upper O-shaped sealing ring (5) and a lower O-shaped sealing ring (9) at the upper and lower parts respectively.
3. A rotary control head running sleeve assembly according to claim 1, wherein the outer wall of the upper end of the sleeve protective sleeve (1) is provided with two internal threaded holes (6) for matching with the hanging ring.
4. The rotary control head casing assembly according to claim 1, wherein a locking slot (7) is formed in the middle of the outer wall of the casing protective sleeve (1), and a positioning inclined surface (8) is arranged below the locking slot (7).
5. The rotary control head casing assembly according to claim 1, wherein the flange plate (2) is provided with a flange O-ring (10) on the outer wall contacting with the casing protection sleeve (1).
6. A rotary control head running sleeve assembly according to claim 1, wherein the sleeve protection sleeve (1) is connected with the flange connection disc (2) by means of socket head cap screws (12).
7. A rotary control head casing assembly according to claim 1, wherein the casing rubber core (3) is connected to the flange connection disc (2) by a plurality of rubber core nuts (11) in cooperation with a plurality of casing rubber core screws (13).
8. The rotary control head casing assembly according to claim 1, wherein the upper end of the casing protection sleeve (1) is a slope and funnel-shaped.
9. The rotary control head lower bushing assembly of claim 1, wherein the upper J-slot opening is beveled and funnel shaped.
10. A J-slot pick-and-place tool, which is matched with the rotary control head lower casing assembly of claim 9, and comprises a longitudinal limiting device (14), a convex pin (15), a through hole (16), a positioning step surface (17), a transverse limiting device (18) and a threaded central shaft (19) with a drilling tool; the upper end and the lower end of the central shaft (19) with the drilling tool thread are provided with the drilling tool thread, the middle part of the central shaft with the drilling tool thread is provided with an external disc, the upper end of the external disc is provided with a longitudinal limiting device (14) at the position connected with the central shaft (19) with the drilling tool thread, and the lower end of the external disc is provided with a transverse limiting device (18) at the position connected with the central shaft (19) with the drilling tool thread; a vertical through hole (16) and a positioning step surface (17) are arranged on the outer disc; the outer disc is provided with convex pins (15), and the positions and the number of the convex pins (15) are matched with the J-shaped grooves (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013408.1A CN115977537A (en) | 2023-01-05 | 2023-01-05 | Rotary control head lower sleeve assembly and J-shaped groove taking and placing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013408.1A CN115977537A (en) | 2023-01-05 | 2023-01-05 | Rotary control head lower sleeve assembly and J-shaped groove taking and placing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115977537A true CN115977537A (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310013408.1A Pending CN115977537A (en) | 2023-01-05 | 2023-01-05 | Rotary control head lower sleeve assembly and J-shaped groove taking and placing tool |
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| Country | Link |
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| CN (1) | CN115977537A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200952366Y (en) * | 2005-12-28 | 2007-09-26 | 新疆石油管理局钻井工艺研究院 | Rotary flow guiding device |
| CN200955370Y (en) * | 2006-07-12 | 2007-10-03 | 新疆石油管理局钻井工艺研究院 | Rotary control head for drilling well |
| CN201963245U (en) * | 2011-01-26 | 2011-09-07 | 四川内江宏生石油机械有限公司 | Easy-mounting and easy-dismounting rotary blowout preventer |
| US20140158367A1 (en) * | 2012-12-07 | 2014-06-12 | Smith International, Inc. | Wellhead latch and removal systems |
| CN106555560A (en) * | 2016-04-01 | 2017-04-05 | 中国石油大学(华东) | A kind of casing hanger under water and seal assembly decentralization instrument |
| CN208122803U (en) * | 2018-03-12 | 2018-11-20 | 胜利油田中利石油工程技术有限公司 | A kind of rotating well plugging device |
| CN210714561U (en) * | 2019-07-02 | 2020-06-09 | 中国石油天然气股份有限公司 | Well control blowout preventer for rotary operation in well repair |
| CN210798910U (en) * | 2019-11-08 | 2020-06-19 | 中国石油大学(华东) | Tool for lowering underwater wellhead head sleeve pipe hanger and sealing assembly |
| CN111425162A (en) * | 2020-05-07 | 2020-07-17 | 四川国励石油工程有限公司 | Large-drift-diameter single-double quick-change rotary blowout preventer assembly |
| CN215830463U (en) * | 2021-09-03 | 2022-02-15 | 国洪云 | Safe and reliable wellhead pressure test casing head pressure test plug taking and placing device |
-
2023
- 2023-01-05 CN CN202310013408.1A patent/CN115977537A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200952366Y (en) * | 2005-12-28 | 2007-09-26 | 新疆石油管理局钻井工艺研究院 | Rotary flow guiding device |
| CN200955370Y (en) * | 2006-07-12 | 2007-10-03 | 新疆石油管理局钻井工艺研究院 | Rotary control head for drilling well |
| CN201963245U (en) * | 2011-01-26 | 2011-09-07 | 四川内江宏生石油机械有限公司 | Easy-mounting and easy-dismounting rotary blowout preventer |
| US20140158367A1 (en) * | 2012-12-07 | 2014-06-12 | Smith International, Inc. | Wellhead latch and removal systems |
| CN106555560A (en) * | 2016-04-01 | 2017-04-05 | 中国石油大学(华东) | A kind of casing hanger under water and seal assembly decentralization instrument |
| CN208122803U (en) * | 2018-03-12 | 2018-11-20 | 胜利油田中利石油工程技术有限公司 | A kind of rotating well plugging device |
| CN210714561U (en) * | 2019-07-02 | 2020-06-09 | 中国石油天然气股份有限公司 | Well control blowout preventer for rotary operation in well repair |
| CN210798910U (en) * | 2019-11-08 | 2020-06-19 | 中国石油大学(华东) | Tool for lowering underwater wellhead head sleeve pipe hanger and sealing assembly |
| CN111425162A (en) * | 2020-05-07 | 2020-07-17 | 四川国励石油工程有限公司 | Large-drift-diameter single-double quick-change rotary blowout preventer assembly |
| CN215830463U (en) * | 2021-09-03 | 2022-02-15 | 国洪云 | Safe and reliable wellhead pressure test casing head pressure test plug taking and placing device |
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Inventor after: Liu Shujie Inventor after: Xiao Ping Inventor after: Li Zhujun Inventor after: Wei Anchao Inventor after: Zeng Chunmin Inventor after: Gao Yu Inventor after: Li Xuegang Inventor after: Fan Guangxin Inventor after: Zou Peng Inventor before: Xiao Ping Inventor before: Li Zhujun Inventor before: Wei Anchao Inventor before: Zeng Chunmin Inventor before: Gao Yu Inventor before: Li Xuegang Inventor before: Fan Guangxin Inventor before: Zou Peng |