CN107269244A - Ring packing assembly - Google Patents
Ring packing assembly Download PDFInfo
- Publication number
- CN107269244A CN107269244A CN201710711430.8A CN201710711430A CN107269244A CN 107269244 A CN107269244 A CN 107269244A CN 201710711430 A CN201710711430 A CN 201710711430A CN 107269244 A CN107269244 A CN 107269244A
- Authority
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- China
- Prior art keywords
- metal
- lock ring
- sealing
- ring
- casing hanger
- 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.)
- Granted
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- 238000012856 packing Methods 0.000 title abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 98
- 239000002184 metal Substances 0.000 claims abstract description 84
- 229920001971 elastomer Polymers 0.000 claims description 15
- 239000000806 elastomer Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000003566 sealing material 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Gasket Seals (AREA)
Abstract
The present invention relates to sealing device technical field, and in particular to a kind of ring packing assembly, for being sealed between casing hanger high-pressure well is oral, and high-pressure well is oral to have lock ring groove；Ring packing assembly includes：Metal sealing body, the inner surface of metal sealing body and outer surface have raised metal sealing contact, are contacted for the inner surface oral with the outer surface and high-pressure well of casing hanger；And lock ring, lock ring couples with metal sealing body, and when being snapped into lock ring groove, metal sealing body is locked between the outer surface of casing hanger and the oral inner surface of high-pressure well.Casing hanger is sealed by metal seal, fixed again by lock ring in lock ring groove, make metal seal and the oral close connection sealing of high-pressure well, two way seal and be without any pure metal seal sealing for adding other secondary materials above and below realizing, the various operating modes of current oil drilling and production can be met, it is possible to achieve the high-pressure metal sealing under the conditions of wide temperature.
Description
Technical Field
The invention relates to the technical field of sealing devices, in particular to an annular sealing assembly.
Background
The ring Seal assembly ASA (annual Seal assembly) of the underwater well head system is the most critical part of the underwater well head system, and the quality of the sealing performance and the reliability of the operation of the ring Seal assembly ASA (annual Seal assembly) directly influence and determine the safety and the service life of the whole marine oil exploitation system. The sealing pressure grade of the annular sealing assembly ASA belongs to high pressure and even ultrahigh pressure, the working condition is complex, and the performance requirements are high. The designed sealing device can meet the requirements of sealing and corrosion resistance, and also must meet the performance requirements of wide temperature range (design temperature is minus 20 ℃ to minus 150 ℃), long service life, impact resistance, fatigue resistance and the like. The annular seal assembly can only be set to the oral setting position of underwater well and reach sealed state through lowering instrument remote control, has more increased sealed degree of difficulty, still need can be retrieved after its mission is accomplished, consequently lower retrieve simple, reliable, also be the problem that seal assembly design will be considered.
The annular sealing assembly of the underwater wellhead provides pressure packing between each layer of casing hanger and the underwater wellhead, is pressure control equipment of an underwater wellhead system, and the sealing performance of the annular sealing assembly directly influences the working reliability and stability of the whole underwater wellhead system.
Subsea wellhead systems place high demands on sealing technology, including high seal pressure ratings, sealing materials resistant to the H2S environment, wide temperature range of the seal, etc. At present, the deep-water oil and gas drilling and production equipment such as an underwater wellhead system does not exist in China, and one bottleneck restricting the development of the deep-water oil and gas drilling and production equipment is that a sealing device suitable for an ocean deep-water oil and gas production system is not developed and developed in China. A large gap exists at home and abroad in the aspect of ocean deepwater sealing technology.
The prior common sealing assembly generally consists of an upper driving body and a lower sealing body. The inner wall of the seal assembly is provided with a structure matched with the lowering tool. And after the sealing assembly matched with the lowering tool is lowered into the casing hanger along the casing hanger, and after the sealing assembly is lowered into an outer ring shaft shoulder of the casing hanger, an upper driving body of the sealing ring assembly extrudes a lower sealing body until a sealing effect is achieved.
The existing common seal assembly is mainly characterized in that: and the lip edge seal is formed by pressing the elastomer on the lip edge to realize sealing with the body when a part of the rubber elastomer contained in the lip edge is pressed by the body. Still others have pressed the metal body directly inside the metal lip to seal the lip pressure to the body. The disadvantage of this configuration is that the lip is relatively thin and the open side of the lip is prone to snagging during passage of the seal assembly through the riser and blowout preventer, thereby causing seal failure.
Disclosure of Invention
In response to the deficiencies in the above-mentioned problems, the present invention provides an annular seal assembly.
To achieve the above objects, the present invention provides an annular seal assembly for sealing between a high pressure wellhead head and a casing hanger, the high pressure wellhead head having a lockring groove;
the annular seal assembly includes:
a metal seal body having raised metal seal contacts on its inner and outer surfaces for contacting the outside surface of the casing hanger and the inner surface of the high pressure wellhead; and
a lock ring coupled with the metal seal body and locking the metal seal body between an outside surface of the casing hanger and an inside surface of the high pressure wellhead when snapped into the lock ring groove.
In the above annular seal assembly, further, the metal seal body is filled with a compressible elastomer or an incompressible liquid for compressing the metal seal body, so that the metal seal contact generates a reaction force to the casing hanger and the high-pressure wellhead.
According to the annular seal assembly provided by the embodiment of the invention, the casing is hung and sealed through the metal seal piece and then clamped and fixed in the lock ring groove through the lock ring, so that the metal seal piece is tightly connected and sealed with the high-pressure wellhead head, the up-and-down bidirectional sealing is realized, the pure metal seal piece without any additional auxiliary material is used for sealing, various working conditions of current oil drilling and production can be met, and the high-pressure metal seal under the wide-temperature condition can be realized.
In addition, the annular sealing assembly provided according to the above embodiment of the present invention further has the following technical features:
in the above annular seal assembly, preferably, the elastomer is rubber, and the liquid is oil or water.
In the above annular seal assembly, further, the outer surface of the lock ring is configured with a protrusion, and the protrusion is matched with the shape of the lock ring groove.
In the above annular seal assembly, further, the convex portion is in the shape of convex teeth, and the lock ring groove is in the shape of concave teeth.
In the above annular sealing assembly, further, the annular sealing assembly further comprises a driving pressure ring, and an inclined surface of the driving pressure ring is in contact with an inclined surface of the locking ring;
wherein,
and a plane contact surface is processed below the inclined surface of the driving pressing ring, and a contact plane clamped with the plane contact surface is processed above the inclined surface of the locking ring.
In the above annular seal assembly, further comprising a main body disposed between the lock ring and the metal seal body;
the main body and the metal sealing body are in threaded connection, and the main body and the lock ring are connected through a lock ring anti-rotation pin.
In the above ring-shaped seal assembly, the ring-shaped seal assembly further comprises six drive pins which are uniformly distributed on the periphery of the main body and provided with dustproof seal rings, the upper inclined surfaces of the drive pins are in contact with the lower inclined surfaces of the lock ring, and the lower end surfaces of the drive pins are in contact with the top of the casing hanger so as to push the drive pins upwards, so that the lock ring is opened outwards to be locked in the lock ring groove.
In the above annular seal assembly, further, the seal ring further comprises a positioning steel wire, and the positioning steel wire is arranged between the main body and the metal seal main body.
In the above annular seal assembly, the annular seal assembly further includes a link ring engaged between the main body and the drive compression ring.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of the construction of an annular seal assembly in accordance with one embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
As shown in fig. 1, an embodiment of the present invention provides an annular seal assembly for sealing between a high pressure wellhead head 1 and a casing hanger 10, the high pressure wellhead head 1 having a lockring groove 11;
the annular seal assembly includes: a metal seal body 18 and a lock ring 4;
wherein the inner surface 15 and the outer surface 12 of the metal seal body 18 have raised metal seal contacts for contacting the outer side surface 14 of the casing hanger 10 and the inner surface 13 of the high pressure wellhead 1;
and the locking ring 4 is connected with the metal sealing body 18 and clamped with the locking ring groove 11.
It should be understood that for simplicity of illustration, fig. 1 shows only a portion along the left side of the central axis of the high-pressure wellhead head 1, and does not show the entire circumferential portion that is symmetrical to the left portion along the central axis. The aforementioned metal sealing contacts are of small dimensions and therefore not evident in fig. 1. With this metal seal contact, the strength of the joint between the metal seal body 18 and the high pressure wellhead head 1 and the casing hanger 10, respectively, can be increased when the metal seal body 18 is pressed in between the high pressure wellhead head 1 and the casing hanger 10.
The casing is hung and sealed through the metal sealing element, and then the metal sealing element is clamped and fixed in the locking ring groove through the locking ring, so that the metal sealing element is tightly connected and sealed with the high-pressure wellhead, the up-and-down bidirectional sealing is realized, the pure metal sealing element without any additional auxiliary material is used for sealing, various working conditions of current petroleum drilling and production can be met, and the high-pressure metal sealing under the wide-temperature condition can be realized.
In the above technical solution, the metal sealing body 18 is filled with a compressible elastomer or an incompressible liquid for pressing the metal sealing body 18, so that the metal sealing contact generates a reaction force against the casing hanger 10 and the high pressure wellhead 1. Further, the elastomer is rubber and the liquid is oil or water. By pouring rubber or oil or water into the metal sealing body 18, the metal sealing contact can be promoted to be closely attached to the outer side surface 14 of the casing hanger 10 and the inner surface 13 of the high-pressure well head 1, and the sealing effect is improved.
In the above technical solution, the outer surface of the lock ring 4 is configured with a convex part, and the convex part and the lock ring groove 11 are matched in shape. Wherein the protrusion is in the shape of a convex tooth and the locking ring groove 11 is in the shape of an inwardly concave tooth. The convex part can also be in the shape of convex teeth with different angles, the lock ring groove 11 can also be in the shape of concave teeth with different angles, the convex teeth and the concave teeth are mutually clamped and connected for locking the annular sealing assembly and the high-pressure wellhead 1, and the installation mode has the effect of convenient and fast installation and locking.
In another technical scheme, still include drive clamping ring 2, the inclined plane of drive clamping ring 2 contacts with the inclined plane of catch 4, and the angle on two inclined planes is the same to better laminating avoids because the laminating is not good, arouses the problem that catch 4 removes not well. A plane contact surface 19 is processed below the inclined surface of the driving pressing ring 2, and a plane clamped with the plane contact surface 19 is processed above the inclined surface of the locking ring 4, so that the situation that the locking ring 4 is opened in advance due to the action of the inclined surface of the locking ring 4 and the inclined surface of the driving pressing ring in the downward releasing process can be avoided.
In another technical solution, the sealing device further comprises a main body 5, wherein the main body 5 is arranged between the locking ring 4 and the metal sealing body 18; wherein, the main body 5 and the metal sealing body 18 are in threaded connection, and the main body 5 and the lock ring 4 are positioned by the lock ring anti-rotation pin 6. Wherein the front part of the main body 5 is inserted into the rear end of the metal sealing body 18 and is positioned and locked by the steel wire 8, so that the connection stability of the main body 5 and the metal sealing body 18 is improved, and the stability of the annular sealing assembly is further improved.
In another technical scheme, the device also comprises driving pins 7, six driving pins 7 are uniformly distributed on the periphery of the main body 5 and provided with dustproof sealing rings 9, the upper inclined surfaces of the driving pins 7 are in contact with the lower inclined surfaces of the locking rings 4, and the lower end surfaces 17 are in contact with the top 16 of the casing hanger 10, namely when the sealing assembly is in place, the upper inclined surfaces of the driving pins 7 drive the lower inclined surfaces of the locking rings 4, so that the locking rings 4 are enabled to be opened outwards and locked in the locking ring grooves 11.
In another technical scheme, the device further comprises a positioning pin 6, and the positioning pin 6 is arranged on the upper portion of the main body 5. The lock ring is positioned by the positioning pin 6 to avoid moving, and the positioning effect is good.
In another technical scheme, the device further comprises a linkage ring 3, and the linkage ring 3 is connected to the side of the driving pressure ring 2 through threads. The inner sides of the linkage ring 3 and the driving compression ring 2 are flat, so that the occurrence of protrusion is avoided, and the operation is not influenced.
When in specific use: under the action of the pushing force F of the feeding tool, the driving press ring 2 utilizes a plane contact surface 19 with the lock ring 4 to push the main body 5 and the metal sealing body 18 downwards, the metal sealing body 18 and the outer side 14 of the casing hanger 10 have a matching surface with the same angle, when the bottom of the driving pin 7 is in contact with the top 16 of the casing hanger 10 under the action of the pushing force, the upper inclined surface of the driving pin 7 and the inner side of the lock ring 4 act to drive the lock ring 4 to expand outwards, the driving press ring 2 is enabled to move to be in inclined surface contact with the contact plane 19 of the lock ring 4, and the lock ring 4 is pushed outwards to be extruded into a wellhead lock ring groove 11 through the inclined surface of.
Meanwhile, the bottom of the main body 5 is in contact with the top 16 of the casing hanger 10, the sealing assembly is installed in place, at the moment, a metal sealing body 18 of the sealing assembly is extruded into an annular space between the casing hanger 10 and the high-pressure wellhead 1, three protruding metal sealing contacts are arranged on the inner side 15 of the metal sealing body 18 and are in contact with the outer side surface 14 of the casing hanger 10 to achieve metal sealing, and three protruding metal contacts are also arranged on the outer surface 12 of the metal sealing body 18 and are in contact with the inner surface 13 of the high-pressure wellhead 1 to achieve metal sealing.
The positive hydraulic action of the metal seal body 18 in the seal assembly resembles a D-ring seal, and the metal seal between the inner and outer surfaces 15 and 12 of the metal seal body 18 and the outer surface 14 of the casing hanger 10 and the inner surface 13 of the high pressure wellhead head 1 is more effective. When the pressure is reversely tested from the bottom of the sealing assembly, the positions of the main body 5 of the sealing assembly and the top of the metal sealing body 18 are kept still under the action of the locking ring 4, so that the D-shaped sealing ring of the metal sealing body 18 can also deform inwards and outwards, and the metal sealing effect is realized. The annular sealing assembly of the design realizes up-and-down bidirectional sealing and is pure metal sealing without any additional auxiliary materials.
The sealing assembly is made of corrosion-resistant metal materials, can meet various working conditions of current oil drilling and production, and can realize high-pressure metal sealing under wide-temperature conditions.
1. The key point of the design is that the metal sealing body 18 is internally filled with an incompressible elastomer to generate a reaction force, so that the inner surface and the outer surface of the metal sealing body 18 are respectively implemented on the outer surface of the casing hanger 10 and the inner surface 13 of the high-pressure wellhead head 1 to realize effective metal sealing;
2. by utilizing the same angle between the inner surface 15 of the metal sealing body 18 and the outer surface 14 of the casing hanger 10, the sealing assembly is easily extruded in place under the action of the downward pushing force of a feeding tool, and the metal sealing is realized between the integral deformation of the metal sealing body 18 and the high-pressure wellhead head 1 under the action of the whole inclined surface;
3. the contact plane 19 between the driving compression ring 2 and the locking ring 4 can ensure that the sealing assembly cannot be seated and hung in advance in the lowering process, the sealing assembly can be seated and hung only when the main body 5 and the driving pin 7 are in contact with the top 16 of the casing hanger 10, and at the moment, the 45-degree inclined plane extrusion of the locking ring 4 and the locking ring groove 11 further enables the sealing assembly to be completely in place.
4. The metal sealing body 18 is integral, and can be welded up and down to facilitate the simplification of processing;
5. the metal sealing body 18 is connected with the main body 5 in a torque threaded manner, and can also be in a locking ring form to achieve the locking effect; the metal seal body 18 may be impregnated with an elastomer by impregnating it with a suitable liquid.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An annular seal assembly for sealing between a high pressure wellhead head (1) and a casing hanger (10), the high pressure wellhead head (1) having a lockring groove (11);
the annular seal assembly includes:
a metal seal body (18), the inner surface (15) and the outer surface (12) of the metal seal body (18) having raised metal seal contacts for contacting the outside surface (14) of the casing hanger (10) and the inner surface (13) of the high pressure wellhead (1); and
a locking ring (4), said locking ring (4) being coupled with said metal seal body (18) and locking said metal seal body (18) between an outer side surface (14) of said casing hanger (10) and an inner surface (13) of said high pressure wellhead (1) when snapped into said locking ring groove (11).
2. The annular seal assembly according to claim 1, wherein the metal seal body (18) is internally filled with a compressible elastomer or an incompressible liquid for squeezing the metal seal body (18) such that the metal seal contact generates a reaction force against the casing hanger (10) and the high pressure well head (1).
3. The annular seal assembly of claim 2 wherein the elastomer is rubber and the liquid is oil or water.
4. An annular seal assembly according to claim 1, wherein the outer surface of the locking ring (4) is configured with a protrusion that is adapted to the shape of the locking ring groove (11).
5. The annular seal assembly of claim 4 wherein the boss is in the shape of raised teeth and the lock ring groove is in the shape of inwardly recessed teeth.
6. The annular seal assembly according to any of claims 1 to 5, further comprising a drive collar (2), an inclined surface of the drive collar (2) being in contact with an inclined surface of the lock ring (4);
wherein,
a plane contact surface (19) is processed below the inclined surface of the driving pressing ring (2), and a contact plane which is clamped with the plane contact surface (19) is processed above the inclined surface of the locking ring (4).
7. The annular seal assembly according to any of claims 1-6, further comprising a main body (5), the main body (5) being disposed between the lock ring (4) and the metal seal body (18);
the main body (5) and the metal sealing body (18) are in threaded connection, and the main body (5) and the lock ring (4) are connected through a lock ring anti-rotation pin (6).
8. The ring seal assembly according to claim 7, further comprising six drive pins (7), said drive pins (7) being evenly distributed around said main body (5) with dust seals (9), the upper inclined surface of said drive pins (7) contacting the lower inclined surface of said lock ring (4), the lower end surface (17) contacting the top portion (16) of said casing hanger (10) to push said drive pins (7) upward so that said lock ring (4) opens outwardly into said lock ring groove (11).
9. Annular seal assembly according to claim 8, further comprising a positioning wire (8), said positioning wire (8) being arranged between said main body (5) and said metal seal main body (18).
10. The annular sealing assembly according to any of claims 8 to 9, further comprising a link ring (3), the link ring (3) being snapped between the main body (5) and the driving collar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710711430.8A CN107269244B (en) | 2017-08-18 | 2017-08-18 | Annular seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710711430.8A CN107269244B (en) | 2017-08-18 | 2017-08-18 | Annular seal assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107269244A true CN107269244A (en) | 2017-10-20 |
| CN107269244B CN107269244B (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710711430.8A Active CN107269244B (en) | 2017-08-18 | 2017-08-18 | Annular seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107269244B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360997A (en) * | 2018-05-09 | 2018-08-03 | 上海霞为石油设备技术服务有限公司 | A kind of new type of deep-water annular space seal assembly device |
| CN108487874A (en) * | 2018-05-09 | 2018-09-04 | 上海霞为石油设备技术服务有限公司 | A kind of novel annular space seal assembly device |
| CN109000914A (en) * | 2018-07-11 | 2018-12-14 | 中海石油(中国)有限公司湛江分公司 | A kind of experimental rig and method of ring packing assembly seal body |
| CN110552651A (en) * | 2018-06-04 | 2019-12-10 | 上海霞为石油设备技术服务有限公司 | novel deep water well head equipment |
| CN114320211A (en) * | 2020-10-09 | 2022-04-12 | 中国海洋石油集团有限公司 | Thermal recovery positioning insertion sealing device |
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Cited By (10)
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| CN108487874B (en) * | 2018-05-09 | 2024-02-13 | 上海霞为石油设备技术服务有限公司 | Annular space sealing assembly device |
| CN108360997B (en) * | 2018-05-09 | 2024-02-13 | 上海霞为石油设备技术服务有限公司 | Annular sealing assembly device for deep water |
| CN110552651A (en) * | 2018-06-04 | 2019-12-10 | 上海霞为石油设备技术服务有限公司 | novel deep water well head equipment |
| CN110552651B (en) * | 2018-06-04 | 2024-06-11 | 上海霞为石油设备技术服务有限公司 | Novel deep water wellhead equipment |
| CN109000914A (en) * | 2018-07-11 | 2018-12-14 | 中海石油(中国)有限公司湛江分公司 | A kind of experimental rig and method of ring packing assembly seal body |
| CN109000914B (en) * | 2018-07-11 | 2024-02-02 | 中海石油(中国)有限公司湛江分公司 | Test device and method for sealing body of annular sealing assembly |
| CN114320211A (en) * | 2020-10-09 | 2022-04-12 | 中国海洋石油集团有限公司 | Thermal recovery positioning insertion sealing device |
| CN114320211B (en) * | 2020-10-09 | 2024-03-08 | 中国海洋石油集团有限公司 | Thermal recovery positioning insertion sealing device |
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| CN107269244B (en) | 2023-07-04 |
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