CN102182418B - Joint device for underwater dry-type Christmas tree sealed cabin - Google Patents
Joint device for underwater dry-type Christmas tree sealed cabin Download PDFInfo
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- CN102182418B CN102182418B CN201110082208.9A CN201110082208A CN102182418B CN 102182418 B CN102182418 B CN 102182418B CN 201110082208 A CN201110082208 A CN 201110082208A CN 102182418 B CN102182418 B CN 102182418B
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- steel ball
- pipeline
- christmas tree
- round pipe
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Abstract
The invention relates to a joint device for an underwater dry-type Christmas tree sealed cabin. The joint device for the underwater dry-type Christmas tree sealed cabin is characterized by comprising a seal joint and an operating joint, wherein the seal joint is connected to the top end of the sealed cabin, and the operating joint is connected to the lower end of a drill pole; the seal joint comprises a first round pipe, the upper part of the first round pipe is provided with an inner thread to form a female fastener, the middle part of the pipeline of the first round pipe is provided with a check valve consisting of a steel ball and a spring, the diameter of the pipeline at the upper part of the steel ball is smaller than the diameter of the steel ball, and the diameter of the pipeline at the lower part of the steel ball is larger than that of the steel ball; the operating joint comprises a second round pipe, the lower part of the second round pipe is provided with an outer thread to form a male fastener, and the pipeline of the second round pipe is internally provided with a limit step; the pipe wall of the second round pipe is provided with at least one lateral path communicated with the pipeline of the second round pipe, and an inlet of the lateral path is arranged above the limit step; and a tubular valve core with a sealed upper end is slidably arranged in the second round pipe below the limit step, and the pipe wall of the valve core is provided with at least one through hole. The joint device for the underwater dry-type Christmas tree sealed cabin, disclosed by the invention, has a simple structure and reliable work performance and can conveniently realize the communication between the drill pole and the underwater dry-type Christmas tree sealed cabin.
Description
Technical field
The present invention relates to a kind of sealed joint apparatus, the piecing devices of particularly using about a kind of underwater dry-type Christmas tree sealed cabin, these piecing devices can conveniently be realized the connection of drilling rod and underwater dry-type Christmas tree sealed cabin.
Background technology
At present, the production tree that China's marine drilling engineering is used mainly contains two kinds: platform production tree and underwater wet-type production tree, and platform production tree is that well head and production tree are placed on platform, is dry type tree; Underwater wet-type production tree is that well head and production tree are placed under water, and production tree completely and contact with sea water.Device of the present invention is for underwater dry-type Christmas tree, and namely production tree is placed in a sealed compartment, and sealed compartment is placed under water, still adopts underwater well head, but production tree is dry type tree.The advantage that adopts this device is that production tree itself can adopt common dry type tree, but again offshore platform needn't be set.
Adopt underwater dry-type Christmas tree must solve a problem---the maintenance of production tree.When production tree is keeped in repair under water, more than must first sealed compartment enclosing cover being risen to the water surface, this just need to arrange a joint outer the covering of sealed compartment, and this joint can have convenience and be connected with drilling rod, bears certain pulling force, and can seal under water; Also require drilling rod to be conveniently connected with this joint simultaneously.
Summary of the invention
For the problems referred to above, the object of this invention is to provide the piecing devices that a kind of underwater dry-type Christmas tree sealed cabin is used, these piecing devices can conveniently be realized the connection of drilling rod and underwater dry-type Christmas tree sealed cabin.
For achieving the above object, the present invention takes following technical scheme: the piecing devices that a kind of underwater dry-type Christmas tree sealed cabin is used, is characterized in that: it comprises that one is connected to the seal nipple on sealed compartment top and the operation joint of a jointed rod lower end; Described seal nipple comprises the first pipe, institute first states pipe top and internal thread is set to form box, the pipeline middle part of described the first pipe is provided with an one way valve being comprised of steel ball and spring, and the pipe diameter on described steel ball top is less than described steel ball size, the pipe diameter of described steel ball bottom is greater than described steel ball size; Described operation joint comprises the second pipe, and the bottom of described the second pipe arranges external screw thread to form pin thread, is provided with a limited step in the pipeline of described the second pipe; On the tube wall of described the second pipe, be provided with at least one with the side line of the pipeline communication of described the second pipe, and the import of described side line is positioned at described limited step top; Described the second pipe that is positioned at described limited step below slides and is provided with the tubulose spool of a upper end closed, is provided with at least one through hole on the tube wall of described spool.
Be positioned on the described spool outer wall of described through hole top and be circumferentially provided with a groove, in described groove, be provided with a sealing ring.
The present invention is owing to taking above technical scheme, and it has the following advantages: 1, the present invention adopts the operation pin thread of joint and the box of seal nipple to be connected, and the upper button of drilling rod rotation makes convenient connection between underwater sealing cabin and drilling rod, does not need extra operation.2, in seal nipple of the present invention, be provided with the one way valve that one way valve one is comprised of steel ball and spring, at drilling rod, be connected with sealed compartment put in place before one way valve in closed condition, guaranteed that seawater can not enter in drilling rod runner and sealed compartment.3, the present invention is simple in structure, and reliable working performance can conveniently realize the connection of drilling rod and underwater dry-type Christmas tree sealed cabin.
Accompanying drawing explanation
Fig. 1 is the structural representation of seal nipple of the present invention
Fig. 2 is the structural representation that the present invention operates joint
Fig. 3～Fig. 6 is course of work schematic diagram of the present invention
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1 and Figure 2, the present invention includes one and be connected to the seal nipple 1 on sealed compartment top and the operation joint 2 of a jointed rod lower end.
In above-described embodiment, be positioned on spool 25 outer walls of through hole 26 tops and be circumferentially provided with a groove, in groove, be provided with a sealing ring 27, better to realize the sealing function of the pipeline of 25 pairs of pipes 21 of spool.
As shown in Fig. 3～Fig. 6, specific works process of the present invention is as follows:
1, after drilling rod attended operation joint 2, transfer;
2, transfer to sealed compartment top, the operation pin thread 22 of joint 2 and the box 12 of seal nipple 1 are connected, the upper button of drilling rod rotation, and sealed compartment is connected with drilling rod;
3, along with detaining on drilling rod, operation spool 25 tops of joint 2 and the steel ball 13 of seal nipple 1 contact, and the spool 25 of operation joint 2 moves upward;
4, when the spool 25 of operation joint 2 moves upward to the position of limited step 23, spool 25 cannot continue up, and spool 25 backs down the steel ball 13 of seal nipple 1, and at this moment the passage of seal nipple 1 and operation joint 2 is all opened, and drilling rod runner and sealed compartment are communicated with;
5, in continuation, detain until screw thread tightens.
Said process is while entering sealed compartment maintenance lift-off seal hatchcover, the connection procedure of drilling rod and plug hatch, on the contrary the process that maintenance finishes to transfer plug hatch is.
When maintenance, by drilling rod, connect, in cabin, inject air, after maintenance finishes, can connect to inert gas injecting in cabin by drilling rod.
The present invention only describes with above-described embodiment; the structure of each parts, setting position and connection thereof all can change to some extent; on the basis of technical solution of the present invention; all improvement of indivedual parts being carried out according to the principle of the invention and equivalents, all should not get rid of outside protection scope of the present invention.
Claims (2)
1. the piecing devices that underwater dry-type Christmas tree sealed cabin is used, is characterized in that: it comprises that one is connected to the seal nipple on sealed compartment top and the operation joint of a jointed rod lower end;
Described seal nipple comprises the first pipe, institute first states pipe top and internal thread is set to form box, the pipeline middle part of described the first pipe is provided with an one way valve being comprised of steel ball and spring, and the pipe diameter on described steel ball top is less than described steel ball size, the pipe diameter of described steel ball bottom is greater than described steel ball size;
Described operation joint comprises the second pipe, and the bottom of described the second pipe arranges external screw thread to form pin thread, is provided with a limited step in the pipeline of described the second pipe; On the tube wall of described the second pipe, be provided with at least one with the side line of the pipeline communication of described the second pipe, and the import of described side line is positioned at described limited step top; Described the second pipe that is positioned at described limited step below slides and is provided with the tubulose spool of a upper end closed, is provided with at least one through hole on the tube wall of described spool.
2. the piecing devices that a kind of underwater dry-type Christmas tree sealed cabin as claimed in claim 1 is used, is characterized in that: be positioned on the described spool outer wall of described through hole top and be circumferentially provided with a groove, be provided with a sealing ring in described groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110082208.9A CN102182418B (en) | 2011-04-01 | 2011-04-01 | Joint device for underwater dry-type Christmas tree sealed cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110082208.9A CN102182418B (en) | 2011-04-01 | 2011-04-01 | Joint device for underwater dry-type Christmas tree sealed cabin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102182418A CN102182418A (en) | 2011-09-14 |
| CN102182418B true CN102182418B (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110082208.9A Active CN102182418B (en) | 2011-04-01 | 2011-04-01 | Joint device for underwater dry-type Christmas tree sealed cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102182418B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397871B (en) * | 2013-08-14 | 2015-10-28 | 大连理工大学 | A kind of ultra-deep-water oil and gas development system based on dry type tree and mounting method thereof |
| CN112392429B (en) * | 2020-11-18 | 2022-09-27 | 中海石油(中国)有限公司 | Underwater wellhead emergency releasing well sealing device and method with inner and outer barrel structures |
| CN114086905B (en) * | 2022-01-21 | 2022-04-08 | 中海油能源发展股份有限公司采油服务分公司 | Underwater dry type wellhead cabin suitable for offshore oil field and installation method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2588040Y (en) * | 2002-12-10 | 2003-11-26 | 四川石油管理局钻采工艺技术研究院 | One-direction pressure-fixed joint |
| CN2881080Y (en) * | 2006-01-11 | 2007-03-21 | 赵培文 | Square drill rod back pressure valve |
| CN200978651Y (en) * | 2006-12-06 | 2007-11-21 | 吉林石油集团有限责任公司 | Pressure relief coupler |
| CN202031520U (en) * | 2011-04-01 | 2011-11-09 | 中国海洋石油总公司 | Joint device for underwater dry-type Christmas tree sealed cabin |
-
2011
- 2011-04-01 CN CN201110082208.9A patent/CN102182418B/en active Active
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| Publication number | Publication date |
|---|---|
| CN102182418A (en) | 2011-09-14 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |