CN202215184U - Protective device of underwater well head in sea - Google Patents
Protective device of underwater well head in sea Download PDFInfo
- Publication number
- CN202215184U CN202215184U CN2011202832428U CN201120283242U CN202215184U CN 202215184 U CN202215184 U CN 202215184U CN 2011202832428 U CN2011202832428 U CN 2011202832428U CN 201120283242 U CN201120283242 U CN 201120283242U CN 202215184 U CN202215184 U CN 202215184U
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- CN
- China
- Prior art keywords
- end cap
- protective device
- connector
- well head
- underwater wellhead
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a protective device of an underwater well head in the sea, which comprises a main casing composed of a barrel and an end cap. A plurality of groups of locating blocks are evenly distributed on the inner wall of the barrel along the circumference of the barrel, one locking spring piece is fixed on each group of locating blocks through screws, and the upper end face of each locking spring piece is matched with the inclined plane of a tooth-shaped surface arranged on the outer portion of the underwater well head. A connector is fixedly installed in a center hole of the end cap, a check valve is installed in a through hole arranged at the axial center of the connector, fluid channels are arranged in the end cap, one ends of all the fluid channels are connected with a pipe manifold, the other ends of all the fluid channels are led to the outside of the end cap, and a seal ring is arranged on a contact surface of the end cap and the tip of the underwater well head. The protective device of the underwater well head in the sea effectively prevents the underwater well head from being damaged by a falling object and corroded by seawater and marine organisms, and is simple in structure, reliable to work and convenient to dismantle.
Description
Technical field
The utility model belongs to sea oil drilling and production equipment technology field, relates to a kind of ocean underwater wellhead protective device.
Background technology
In marine oil and gas exploration and development process, underwater wellhead is one of crucial ocean drilling and extracting equipment.The underwater wellhead protective device is a kind of a kind of unit that underwater wellhead top is used to protect underwater well head that is installed in.Its effect is when be drilled to a bite oil gas well in the seabed after, does not also carry out production of hydrocarbons, needs interim abandoned well, is used for preventing that it from receiving that falling object injures by a crashing object, seawater and marine organism corrsion.The underwater wellhead protective device is as the important component part of subsea wellhead equipment, behind the intact instantly sleeve pipe, and before completion practice, need be with it to oil gas well close and protect.If the underwater wellhead endoporus is directly exposed in the seawater, is easy to receive that falling object injures by a crashing object, seawater and marine organism corrsion, and then damages underwater wellhead.
Summary of the invention
The purpose of the utility model provides a kind of ocean underwater wellhead protective device, has solved to exist underwater wellhead to be directly exposed in the seawater in the prior art, receives easily that falling object injures by a crashing object, the problem of seawater and marine organism corrsion.
The technical scheme that the utility model adopted is; A kind of ocean underwater wellhead protective device; Comprise the main casing of forming by cylindrical shell and end cap; The inwall of cylindrical shell evenly is furnished with many group locating pieces along circumference, through screw a locking shell fragment is installed on every group of locating piece, matches with the inclined-plane of underwater wellhead external tooth form face in the upper surface of each locking shell fragment; Be installed with connector in the end cap central bore; The connector axle center has through hole; In this through hole one way valve is installed, the inside of end cap is provided with the fluid passage, and all fluid passage one ends all are connected with manifold; All fluid passage other ends lead to outside the end cap, and end cap and underwater wellhead termination contact surface are provided with sealing ring.
The device of the utility model has prevented effectively that underwater wellhead receives that falling object injures by a crashing object, seawater and marine organism corrsion, has the advantage of simple in structure, reliable operation, convenient disassembly.
Description of drawings
Fig. 1 is the structural representation of the utility model ocean underwater wellhead protective device.
Among the figure, 1. cylindrical shell, 2. locating piece, 3. screw, 4. locking shell fragment, 5. manifold, 6. sealing ring, 7. end cap, 8. one way valve, 9. connector.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is elaborated.
Like Fig. 1; The structure of the ocean underwater wellhead protective device of the utility model is; Comprise the main casing of forming by cylindrical shell 1 and end cap 7; The inwall of cylindrical shell 1 evenly is furnished with many group locating pieces 2 along circumference, through screw 3 a locking shell fragment 4 is installed on every group of locating piece 2, matches with the inclined-plane of underwater wellhead external tooth form face in the upper surface of each locking shell fragment 4; Be installed with connector 9 in end cap 7 centre bores, connector 9 axle center have through hole, and one way valve 8 is installed in this through hole; The inside of end cap 7 is provided with at least one group of fluid passage (showing two groups among the figure); All fluid passage one ends all are connected with manifold 5, and all fluid passage other ends lead to outside the end cap 7, and end cap 7 lower surfaces are provided with closure gasket groove; Sealing ring 6 is installed in the sealing annular groove, and end cap 7 is realized contacting and sealing through sealing ring 6 and underwater wellhead termination.
The assembling process of the utility model underwater wellhead protective device embodiment is: be welded into main casing by cylindrical shell 1 and end cap 7; The inwall of cylindrical shell 1 evenly is furnished with 4 groups of locating pieces 2 along circumference; Through screw 3 a locking shell fragment 4 being installed on every group of locating piece 2, matches with the inclined-plane of underwater wellhead external tooth form face in the upper surface of locking shell fragment 4.End cap 7 is connected with connector 9 through screw thread; In the lower surface closure gasket groove of end cap 7 sealing ring 6 is installed; Connector 9 axle center have through hole; And one way valve 8 is installed in through hole, the inside of end cap 7 is provided with two groups of fluid passages, and is connected with the manifold 5 that is connected underwater wellhead inner chamber and main casing inner chamber in the lower surface.The underwater wellhead protective device is locked on the inclined-plane of underwater wellhead external tooth form face through locking shell fragment 4, prevents that ocean current from dashing protective device to leave.
The operating principle of the utility model device is: cylindrical shell 1, end cap 7 and connector 9 is integrally welded; Then one way valve 8 through being threaded in the connector 9; 4 groups of locating pieces 2 evenly are welded on the inwall of cylindrical shell 1; Locking shell fragment 4 is installed on the locating piece 2 through screw 3, and end cap 7 is connected with manifold 5 through 2 place's screwed holes on the lower surface, forms the fluid circuit of a sealing.
After a bite well has been bored at the sea, need interim abandoned well, during protection device for installing, be connected on the connector 9 with sleeve tool, this protective device seat is placed on the underwater wellhead.Because there is the inclined-plane that matches with underwater wellhead external tooth form face the upper end of locking shell fragment 4, therefore locks shell fragment 4 and just this protective device is automatically locked on the underwater wellhead, purpose is to prevent that huge ocean current from washing out this protective device.After treating that this protective device automatically locks, endoporus and the one way valve 8 of impregnating fluid through connector 9 is injected in the underwater wellhead endoporus, through constantly exerting pressure, the seawater in the underwater wellhead endoporus is discharged through manifold 5 gradually.All be full of impregnating fluid in the annular space chamber that well head head inside, outside and protective device are formed like this, under water.After impregnating fluid has been replaced the seawater in underwater wellhead and the protective device, stop to inject impregnating fluid.Because one way valve 8 is installed; Promptly stoped the impregnating fluid in the underwater wellhead endoporus to overflow in the seawater; Also stoped the external sea aqueous reflux to be gone in the oral endoporus of underwater well, this just prevents that underwater wellhead receives corrosion such as seawater and marine organisms, plays the corrosion protection effect.
When needs take down the underwater wellhead protective device, to carry on directly with the special-purpose dismantling device of protective device, the pulling force that is produced can make locking shell fragment 4 throw off underwater wellhead along the inclined-plane that underwater wellhead matches, and realizes automatic unlocking.
Claims (2)
1. ocean underwater wellhead protective device; Its characteristics are: comprise the main casing of being made up of cylindrical shell (1) and end cap (7); The inwall of cylindrical shell (1) evenly is furnished with many group locating pieces (2) along circumference; Every group of locating piece (2) gone up through screw (3) a locking shell fragment (4) is installed, and matches with the inclined-plane of underwater wellhead external tooth form face in the upper surface of each locking shell fragment (4); Be installed with connector (9) in end cap (7) centre bore; Connector (9) axle center has through hole; One way valve (8) is installed in this through hole, and the inside of end cap (7) is provided with the fluid passage, and all fluid passage one ends all are connected with manifold (5); All fluid passage other ends lead to outside the end cap (7), and end cap (7) is provided with sealing ring (6) with underwater wellhead termination contact surface.
2. ocean according to claim 1 underwater wellhead protective device, its characteristics are: described end cap (7) is connected with connector (9) through screw thread, and one way valve (8) passes through thread set in connector (9) through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202832428U CN202215184U (en) | 2011-08-05 | 2011-08-05 | Protective device of underwater well head in sea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202832428U CN202215184U (en) | 2011-08-05 | 2011-08-05 | Protective device of underwater well head in sea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202215184U true CN202215184U (en) | 2012-05-09 |
Family
ID=46014444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202832428U Expired - Lifetime CN202215184U (en) | 2011-08-05 | 2011-08-05 | Protective device of underwater well head in sea |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202215184U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390089A (en) * | 2014-11-10 | 2015-03-04 | 中国海洋石油总公司 | Underwater control module |
| CN107143300A (en) * | 2017-05-12 | 2017-09-08 | 中国海洋石油总公司 | A kind of underwater horizontal connector landwaste cap device |
| CN107420064A (en) * | 2017-09-07 | 2017-12-01 | 中国石油大学(北京) | A kind of underwater well head locking tool |
| CN107724989A (en) * | 2017-10-11 | 2018-02-23 | 中国海洋石油总公司 | For the kuppe for preventing marine drilling shallow gas from endangering |
| 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 |
| 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 |
-
2011
- 2011-08-05 CN CN2011202832428U patent/CN202215184U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390089A (en) * | 2014-11-10 | 2015-03-04 | 中国海洋石油总公司 | Underwater control module |
| CN107143300A (en) * | 2017-05-12 | 2017-09-08 | 中国海洋石油总公司 | A kind of underwater horizontal connector landwaste cap device |
| CN107420064A (en) * | 2017-09-07 | 2017-12-01 | 中国石油大学(北京) | A kind of underwater well head locking tool |
| CN107724989A (en) * | 2017-10-11 | 2018-02-23 | 中国海洋石油总公司 | For the kuppe for preventing marine drilling shallow gas from endangering |
| CN107724989B (en) * | 2017-10-11 | 2020-09-18 | 中国海洋石油集团有限公司 | Air guide sleeve for preventing harm of shallow gas of ocean drilling |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |
|
| CX01 | Expiry of patent term |