CN107420064A - A kind of underwater well head locking tool - Google Patents
A kind of underwater well head locking tool Download PDFInfo
- Publication number
- CN107420064A CN107420064A CN201710801740.9A CN201710801740A CN107420064A CN 107420064 A CN107420064 A CN 107420064A CN 201710801740 A CN201710801740 A CN 201710801740A CN 107420064 A CN107420064 A CN 107420064A
- Authority
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- China
- Prior art keywords
- well head
- mandrel
- top connection
- underwater well
- locking tool
- 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.)
- Withdrawn
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- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
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)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of underwater well head locking tool, belongs to marine drilling power tool technical field, is designed to solve the problems such as prior art construction complexity, installation, working procedure inconvenience.Underwater well head locking tool of the present invention includes mandrel, top connection and driving cylinder, top connection is sheathed on mandrel, the lower end of mandrel is used to be connected with underwater well head tripping in instrument, top connection is connected with driving cylinder, top connection can be axially moved relative to mandrel, and top connection can drive mandrel to rotate when rotating；Relative to mandrel, the top connection when being axially moved can apply axial force to driving cylinder for top connection, and driving cylinder is used to apply axial force to the retaining mechanism of underwater well head, and moment of torsion can be transmitted to underwater well head by mandrel when top connection rotates.Underwater well head locking tool of the present invention is simple in construction, and installation, working procedure are convenient, can realize high-pressure well it is oral with low pressure well is oral is rigidly connected, and to tripping in instrument transmission moment of torsion.
Description
Technical field
It is described the present invention relates to marine drilling power tool technical field, more particularly to a kind of underwater well head locking tool
Underwater well head locking tool and underwater well head tripping in instrument and the oral connection of high-pressure well, underwater well head can be sent into seabed and be arranged on
Low pressure well is in word.
Background technology
Marine oil and gas resource has turned into the important sources of energy supply, carries out the underwater production equipment research and development of Oil/gas Well in a deep going way,
Secure support is provided for exploitation deep water hydrocarbon resource.Underwater well head is one of visual plant of marine oil gas field development, underwater well
Casing hanger is installed in intraoral portion, and upper end is used to connect preventer group, marine riser, is that wellbore casing connects with mud line above equipment
Unique channel.Underwater well head force environment during drilling well, completion, production operation is harsh, the safety and stability of underwater well head
Property ensure underwater well head be on active service safety guarantee.Underwater well head includes that high-pressure well is oral and low pressure well is oral, high-pressure well it is oral and
Low pressure well is oral using retaining mechanism connection locking, and the locking that underwater well head high-pressure well is oral and low pressure well is oral is needed by special
Locking tool applies thrust, and locking tool pushes retaining mechanism and struts retainer to be engaged with underwater well head link slot.
But there is the problems such as complicated, installation, working procedure inconvenience in current locking tool.
The content of the invention
A kind of simple in construction it is an object of the present invention to propose, installation, working procedure are convenient, can realize high-pressure well mouth
Head with low pressure well is oral is rigidly connected, and to the underwater well head locking tool of tripping in instrument transmission moment of torsion.
To use following technical scheme up to this purpose, the present invention：
A kind of underwater well head locking tool, including mandrel, top connection and driving cylinder, the top connection are sheathed on the mandrel
On, the lower end of the mandrel is used to be connected with underwater well head tripping in instrument, and the top connection drives cylinder to be connected with described, it is described on
Joint can be axially moved relative to the mandrel, and the top connection can drive the mandrel to rotate when rotating；On described
Relative to the mandrel, the top connection when being axially moved can apply axial force, the driving cylinder to joint to the driving cylinder
, can be by the mandrel to underwater well head when the top connection rotates for applying axial force to the retaining mechanism of underwater well head
Moment of torsion is transmitted, can be locked or separate with underwater well head when underwater well head tripping in instrument rotates.
Further, sliding groove is provided with the outer wall of the mandrel, at least part of the sliding groove axially extends,
The underwater well head locking tool also includes circumferential locating part, and the circumferential locating part is arranged in the top connection and the slip
In groove, the top connection can be axially moved by the circumferential locating part and the sliding groove relative to the mandrel.
Further, the sliding groove is axially disposed strip groove；Or, the sliding groove is backward J-shaped groove.
Further, the circumferential locating part is screw, and the head of the screw is placed on the outside of the top connection, the spiral shell
Nail is threadedly coupled with the top connection.
Further, the top connection is connected with the driving cylinder by transmission mechanism, and the top connection is relative to described
Mandrel can apply axial force by the transmission mechanism when being axially moved to the driving cylinder.
Further, the transmission mechanism is linkage, and the underwater well head locking tool is also described including being sheathed on
Flange portion on mandrel, the linkage are hinged with top connection, flange portion and driving cylinder respectively, and the linkage can incite somebody to action
The axial force that the top connection applies is converted into the reverse axial thrust of the driving cylinder.
Further, the axial limit structure being axially moved for limiting the flange portion is provided with the mandrel.
Further, the axial limit structure includes the shaft shoulder being arranged on the mandrel, and the shaft shoulder is used to abut
The bottom of the flange portion；And/or the axial limit structure includes locking cylinder, the locking cylinder includes cylinder main body and described
The lower end of cylinder main body extends radially outward the annular pressing plate to be formed, and the pressing plate is used to press the top for setting the flange portion.
Further, it is provided with observation window on the driving cylinder.
Further, the linkage includes at least three connecting rods.
Beneficial effects of the present invention are as follows：
The underwater well head locking tool that the present embodiment provides, its top connection can be axially moved relative to mandrel, above connect
Head can drive mandrel to rotate when rotating, and relative to mandrel, the top connection when being axially moved can apply axle to driving cylinder for top connection
Xiang Li, and then by driving cylinder to apply axial force to the retaining mechanism of underwater well head, top connection can be driven underwater by mandrel
At least part structure of well head tripping in instrument rotates, so that underwater well head tripping in instrument is locked or separated with high-pressure well mouth,
The present invention is simple in construction, and installation, working procedure are convenient, can realize high-pressure well it is oral with low pressure well is oral is rigidly connected, and to
Tripping in instrument transmits moment of torsion.
Brief description of the drawings
Fig. 1 is the structural representation for the underwater well head locking tool that the preferred embodiment of the present invention one provides；
Fig. 2 is underwater well head locking tool, the underwater well head tripping in instrument and underwater that the preferred embodiment of the present invention one provides
Well head coordinates and underwater well head tripping in instrument is in the structural representation of locking state with underwater well head；
Fig. 3 be underwater well head locking tool and the underwater well head tripping in instrument that the preferred embodiment of the present invention one provides coordinate and
Underwater well head tripping in instrument is in the structural representation of released state with underwater well head；
Fig. 4 is the structural representation of sliding groove provided by the invention.
In figure：
1st, mandrel；2nd, top connection；3rd, cylinder is driven；4th, underwater well head tripping in instrument；5th, sliding groove；6th, circumferential locating part；7、
Linkage；8th, flange portion；9th, the shaft shoulder；10th, locking cylinder；11st, high-pressure well is oral.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
Preferred embodiment one：
This preferred embodiment provides a kind of underwater well head locking tool, as shown in Figure 1 to Figure 3, it include mandrel 1, on
Joint 2 and driving cylinder 3, top connection 2 are sheathed on mandrel 1, and the lower end of mandrel 1 is used to be connected with underwater well head tripping in instrument 4, on
Joint 2 is connected with driving cylinder 3, and top connection 2 can be axially moved relative to mandrel 1, and top connection 2 can drive mandrel when rotating
1 rotates；Relative to mandrel 1, the top connection 2 when being axially moved can apply axial force to driving cylinder 3 for top connection 2, and driving cylinder 3 is used
, can be by mandrel 1 to underwater well head tripping in work when top connection 2 rotates dynamic in applying axial force to the retaining mechanism of underwater well head
Tool 4 transmits moment of torsion.Underwater well head tripping in instrument 4 can be locked or separate with underwater well head when rotating, specifically, under underwater well head
Enter 11 locking oral with the high-pressure well of underwater well head of instrument 4 or separate.
The underwater well head locking tool that the present embodiment provides, top connection 2 can be axially moved relative to mandrel 1, above connect
First 2 can drive mandrel 1 to rotate when rotating, and relative to mandrel 1, when being axially moved, top connection 2 can be to driving cylinder 3 for top connection 2
Apply axial force, and then by driving cylinder 3 to apply axial force to the retaining mechanism of underwater well head, top connection 2 can pass through mandrel 1
At least part structure of underwater well head tripping in instrument 4 is driven to rotate, so that underwater well head tripping in instrument 4 and high-pressure well mouth point
From, the present embodiment is simple in construction, and installation, working procedure are convenient, can realize high-pressure well it is oral with low pressure well is oral is rigidly connected,
And transmit moment of torsion to tripping in instrument.
In the present embodiment, on the basis of said structure, transmission mechanism is provided between top connection 2 and driving cylinder 3, is above connect
First 2 can apply axial force by transmission mechanism when being axially moved relative to mandrel 1 to driving cylinder 3.Specifically, transmission mechanism
For linkage 7, underwater well head locking tool also includes the flange portion 8 being sheathed on mandrel 1, and linkage 7 is respectively with above connecing
First 2, flange portion 8 and driving cylinder 3 are be hinged, and the axial force that top connection 2 applies can be converted into the anti-of driving cylinder 3 by linkage 7
To axial thrust (the i.e. side for the axial thrust that the direction for the axial force that top connection 2 applies to linkage 7 is subject to driving cylinder 3
To conversely).In order to realize the reverse axial thrust that the axial force that top connection 2 applies is converted into driving cylinder 3, linkage 7 wraps
Include at least three connecting rods.In the present embodiment, be driven between top connection 2 and driving cylinder 3 by the connection of linkage 7, be simple in construction,
It is stable and reliable for performance.
In the present embodiment, the fit system between top connection 2 and mandrel 1 is not specifically limited, and enables to top connection 2 can be with
When being axially moved and top connection 2 rotates mandrel 1 can be driven to rotate relative to mandrel 1, for example, in the outer wall of mandrel 1
On be provided with sliding groove 5, at least part of sliding groove 5 axially extends, and underwater well head locking tool also includes circumferential locating part
6, circumferential locating part 6 is arranged in the sliding groove 5 on the through hole in top connection 2 and mandrel 1, and top connection 2 can pass through circumferential limit
Position part 6 and sliding groove 5 are being axially moved relative to mandrel 1.Circumferential locating part 6 can limit the week between top connection 2 and mandrel 1
To motion, and circumferential locating part 6 along sliding groove 5 axially move when can be simultaneously so that top connection 2 makees axial fortune along mandrel 1
It is dynamic.
In the present embodiment, preferably, circumferential locating part 6 is screw, and the head of screw is placed in the outside of top connection 2,
Screw is connected with the through hole whorl in top connection 2.In the present embodiment, the structure of circumferential locating part 6 is simple, cost is low, installation side
Just.
In the present embodiment, as shown in figure 4, sliding groove 5 is preferred but is not limited to backward J-shaped groove.Backward J-shaped groove refers to as in Fig. 4
Axial groove shown, that sliding groove 5 be arranged in parallel vertically including two and length is different, the bottom of two axial grooves passes through transverse direction
Groove connects.The sliding groove 5 that the present embodiment provides is backward J-shaped groove, applies coupling mechanism force by above putting on joint 2, underwater well is sent under
When mouth locking tool is prepared to enter into locking pattern, does not apply axial compressive force, avoid drill string and received larger axial force and unstability occurs
Destroy.Sliding groove 5 in the present embodiment can also be axially disposed strip groove.
In the present embodiment, on the basis of said structure, it is provided with mandrel 1 for limiting the axial movement of flange portion 8
Axial limit structure.Specifically, axial limit structure includes the shaft shoulder 9 being arranged on mandrel 1, and the shaft shoulder 9 is used to abut flange portion 8
Bottom；And/or axial limit structure includes locking cylinder 10, lower end of the locking cylinder 10 including cylinder main body and cylinder main body is radially
Stretch out the annular pressing plate to be formed, and pressing plate is used to press the top for setting flange portion 8.
In the present embodiment, on the basis of said structure, drive and observation window is provided with cylinder 3, observation window is used for from driving
Equipment below 3 external observation underwater well head locking tools of cylinder.
The present embodiment additionally provides a kind of underwater well head component, including underwater well head tripping in instrument 4, the high pressure of underwater well head
Well head first 11 and above-mentioned underwater well head locking tool, mandrel 1 and the underwater well head tripping in instrument 4 of underwater well head locking tool connect
Connect, moment of torsion, 4 turns of underwater well head tripping in instrument can be transmitted to underwater well head tripping in instrument 4 by mandrel 1 when top connection 2 rotates
When dynamic can it is oral with high-pressure well 11 locking or separate.Specifically, the mandrel 1 of underwater well head locking tool and underwater well head tripping in
The mandrel 1 of instrument 4 connects, and when the mandrel 1 of underwater well head locking tool rotates, can drive the core of underwater well head tripping in instrument 4
Axle 1 rotates, oral so as to open or lock high-pressure well.
The underwater well head component that the present embodiment provides, simple in construction as a result of above-mentioned underwater well head locking tool, peace
Dress, working procedure are convenient, can realize high-pressure well it is oral with low pressure well is oral is rigidly connected, and to tripping in instrument transmission moment of torsion.
The underwater well head locking tool of the present embodiment offer is briefly provided exemplified by being provided with backward J-shaped groove on mandrel 1 below
Method of work：
1st, high-pressure well oral 11 and sleeve pipe connection are placed on rig floor well, by underwater well head tripping in instrument 4 and high-pressure well
Oral 11 locking, underwater well head locking tool is connected with underwater well head tripping in instrument 4, underwater well head should be avoided in connection procedure
Tripping in instrument 4 departs from high-pressure well oral 11.
2nd, using drilling rod connect underwater well head locking tool, by underwater well head locking tool, underwater well head tripping in instrument 4,
In the well that high-pressure well is oral 11, sleeve pipe tripping in seabed has been drilled to, high-pressure well oral 11 is placed on mounted low pressure well
In word.
3rd, part drilling machine hook suspending weight is discharged, adjustment tubing string neutral point moves downwards one at underwater well head, by drilling rod
Measured length is equal to the short groove effective length of backward J-shaped groove, as shown in figure 4, now top connection 2 drives circumferential locating part 6 short by backward J-shaped groove
Groove A points are moved to B points；Vertical deviation and rotation reference face are marked on rig floor.
4th, such as 45 ° of dextrorotation drill string predetermined angle enters locking mode, the C that now circumferential locating part 6 is moved in Fig. 4
Point, above carries drilling rod and drives top connection 2 and circumferential locating part 6 to follow closely along backward J-shaped flute length groove and go upward to D points, linkage 7 vertically to
It is lower to promote driving cylinder 3, downward axial force is applied to retaining mechanism, locking high-pressure well oral 11 is oral with low pressure well, greatly
Hook load increment is no more than lower end casing wt.
5th, cementing well, sealing lower section casing string, marks vertical deviation and rotation reference face on rig floor.
6th, hook weigh is discharged, rotates top connection 2, top connection 2 drives mandrel 1 to rotate by circumferential locating part 6, mandrel 1
Transmitted to underwater well head tripping in instrument 4 and free moment of torsion, underwater well head tripping in instrument 4 withdraws locking mechanism, with high-pressure well oral 11
Free, by driving the observation window of cylinder 3 to determine that underwater well head tripping in instrument 4 has been freed with high-pressure well oral 11.
7th, drill string is above carried, acts underwater well head locking tool and underwater well head tripping in instrument 4, completes underwater well head installation.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed in any way.Based on explanation herein, the technology of this area
Personnel would not require any inventive effort the other embodiments that can associate the present invention, and these modes are fallen within
Within protection scope of the present invention.
Claims (9)
- A kind of 1. underwater well head locking tool, it is characterised in that including mandrel (1), top connection (2) and driving cylinder (3), it is described on Joint (2) is sheathed on the mandrel (1), and the lower end of the mandrel (1) is used to be connected with underwater well head tripping in instrument (4), institute Top connection (2) to be stated to be connected with the driving cylinder (3), the top connection (2) can be axially moved relative to the mandrel (1), The top connection (2) can drive the mandrel (1) to rotate when rotating；The top connection (2) is relative to the mandrel (1) in axle Axial force can be applied to the driving cylinder (3) to the top connection (2) during motion, the driving cylinder (3) is used for underwater well Mouthful retaining mechanism apply axial force, can be by the mandrel (1) to underwater well head tripping in work when the top connection (2) rotates Have (4) and transmit moment of torsion, can be locked or separate with underwater well head when underwater well head tripping in instrument (4) rotates.
- 2. underwater well head locking tool according to claim 1, it is characterised in that set on the outer wall of the mandrel (1) There is sliding groove (5), at least part of the sliding groove (5) axially extends, and the underwater well head locking tool also includes circumferential Locating part (6), the circumferential locating part (6) are arranged in the top connection (2) and the sliding groove (5), the top connection (2) It can be axially moved by the circumferential locating part (6) and the sliding groove (5) relative to the mandrel (1).
- 3. underwater well head locking tool according to claim 2, it is characterised in that the sliding groove (5) is to set vertically The strip groove put；Or, the sliding groove (5) is backward J-shaped groove.
- 4. underwater well head locking tool according to claim 2, it is characterised in that the circumferential locating part (6) is screw, The head of the screw is placed on the outside of the top connection (2), and the screw is threadedly coupled with the top connection (2).
- 5. the underwater well head locking tool according to any one of Claims 1-4, it is characterised in that the top connection (2) with The driving cylinder (3) is connected by transmission mechanism, and the top connection (2) can when being axially moved relative to the mandrel (1) Axial force is applied to the driving cylinder (3) by the transmission mechanism.
- 6. underwater well head locking tool according to claim 5, it is characterised in that the transmission mechanism is linkage (7), the underwater well head locking tool also includes the flange portion (8) being sheathed on the mandrel (1), the linkage (7) Be hinged with top connection (2), flange portion (8) and driving cylinder (3) respectively, the linkage (7) can apply the top connection (2) The axial force added is converted into the reverse axial thrust of the driving cylinder (3).
- 7. underwater well head locking tool according to claim 6, it is characterised in that the linkage (7) is included at least Three connecting rods；And/or the axial limiting knot for limiting the flange portion (8) axial movement is provided with the mandrel (1) Structure.
- 8. underwater well head locking tool according to claim 7, it is characterised in that when being provided with use on the mandrel (1) When the axial limit structure that the flange portion (8) is axially moved is limited, the axial limit structure includes being arranged at the core The shaft shoulder (9) on axle (1), the shaft shoulder (9) are used for the bottom for abutting the flange portion (8)；And/or the axial limiting knot Structure includes locking cylinder (10), and the locking cylinder (10) includes cylinder main body and the lower end of the cylinder main body extends radially outward to be formed Annular pressing plate, the pressing plate is used for pressure and sets the top of the flange portion (8).
- 9. the underwater well head locking tool according to any one of Claims 1-4, it is characterised in that on the driving cylinder (3) It is provided with observation window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801740.9A CN107420064A (en) | 2017-09-07 | 2017-09-07 | A kind of underwater well head locking tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801740.9A CN107420064A (en) | 2017-09-07 | 2017-09-07 | A kind of underwater well head locking tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107420064A true CN107420064A (en) | 2017-12-01 |
Family
ID=60432790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710801740.9A Withdrawn CN107420064A (en) | 2017-09-07 | 2017-09-07 | A kind of underwater well head locking tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107420064A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611050A (en) * | 2018-11-08 | 2019-04-12 | 中国海洋石油集团有限公司 | A kind of dedicated subsea equipment in deep water gas field |
| CN109899020A (en) * | 2019-03-28 | 2019-06-18 | 中国海洋石油集团有限公司 | Underwater well head anti-corrosion cap |
| 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 |
| CN115492547A (en) * | 2022-09-22 | 2022-12-20 | 上海霞为石油设备技术服务有限公司 | Tool for installing well drilling and completion wellhead |
| CN116163689A (en) * | 2023-01-30 | 2023-05-26 | 中国石油大学(北京) | Underwater wellhead running tool assembly and application method thereof |
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| US5273117A (en) * | 1992-06-22 | 1993-12-28 | Dril-Quip, Inc. | Subsea wellhead equipment |
| US20090314494A1 (en) * | 2008-06-23 | 2009-12-24 | Vetco Gray Inc. | Wellhead Housing Bootstrap Device |
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| US20140166298A1 (en) * | 2012-12-14 | 2014-06-19 | Vetco Gray Inc. | Closed-loop hydraulic running tool |
| US20170089162A1 (en) * | 2015-09-30 | 2017-03-30 | Vetco Gray Inc. | External Locking Mechanism for Seal Energizing Ring |
| CN207245668U (en) * | 2017-09-07 | 2018-04-17 | 中国石油大学(北京) | A kind of underwater well head locking tool |
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2017
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| US5273117A (en) * | 1992-06-22 | 1993-12-28 | Dril-Quip, Inc. | Subsea wellhead equipment |
| US20090314494A1 (en) * | 2008-06-23 | 2009-12-24 | Vetco Gray Inc. | Wellhead Housing Bootstrap Device |
| CN202215184U (en) * | 2011-08-05 | 2012-05-09 | 宝鸡石油机械有限责任公司 | Protective device of underwater well head in sea |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109611050A (en) * | 2018-11-08 | 2019-04-12 | 中国海洋石油集团有限公司 | A kind of dedicated subsea equipment in deep water gas field |
| CN109899020A (en) * | 2019-03-28 | 2019-06-18 | 中国海洋石油集团有限公司 | Underwater well head anti-corrosion cap |
| CN109899020B (en) * | 2019-03-28 | 2023-09-19 | 中国海洋石油集团有限公司 | Corrosion-proof cap for underwater wellhead |
| CN115492547A (en) * | 2022-09-22 | 2022-12-20 | 上海霞为石油设备技术服务有限公司 | Tool for installing well drilling and completion wellhead |
| CN116163689A (en) * | 2023-01-30 | 2023-05-26 | 中国石油大学(北京) | Underwater wellhead running tool assembly and application method thereof |
| CN116163689B (en) * | 2023-01-30 | 2023-09-19 | 中国石油大学(北京) | Underwater wellhead running tool assembly and application method thereof |
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Application publication date: 20171201 |