CN202674702U - Outer sealing device for marine riser - Google Patents
Outer sealing device for marine riser Download PDFInfo
- Publication number
- CN202674702U CN202674702U CN 201220275765 CN201220275765U CN202674702U CN 202674702 U CN202674702 U CN 202674702U CN 201220275765 CN201220275765 CN 201220275765 CN 201220275765 U CN201220275765 U CN 201220275765U CN 202674702 U CN202674702 U CN 202674702U
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- CN
- China
- Prior art keywords
- marine riser
- sealing
- gland
- seal
- sealing device
- 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 - Fee Related
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Abstract
The utility model discloses an outer sealing device for marine riser, which comprises a lifting pin, a packing gland, a sealing pad and a body, wherein the body is provided with a hanging ring and a positioning pin which provide convenience for hoisting in installation. Both ends of the side part of the body are provided with regulating nuts which can be tightly locked at the outer part of the water riser pipe system. The outer sealing device for the marine riser can be arranged outside the marine riser of which the connection sealing is invalid due to long-time use to play a sealing role, and further has the characteristics of simplicity in structure, convenience in installation, wide applicability and the like.
Description
Technical field
The utility model belongs to a kind of ocean marine riser outer seal device.
Background technique
Along with the increase in operation time of marine oil and gas production platform, a lot of production platforms all are faced with the marine riser etching problem, may cause the marine riser corrosion leakage when serious, thus pollution of marine environment, even can cause Oil/gas Well to close a well in, and bring difficulty when giving ocean abandoned well operation.At sea usually by slow down the corrosion of marine riser at marine riser outer brush anticorrosive property paint, by installing scraper additional, increase marine riser working life.After the marine riser corrosion leakage occured, if adopt replacing marine riser method to solve this problem, the cycle is long, cost is high, and was not high from construction cycle and economic evaluation aspect consideration feasibility.
Summary of the invention
The purpose of this utility model provides a kind of ocean marine riser outer seal device, realizes the sealing of marine riser leakage point, thereby reaches the effect of protecting the marine environment when continuing production or abandoned well.
The utility model is comprised of lift pin, Gland, sealing gasket, body, in up and down symmetrical lift pin, Gland and bolt, packing seal of body, plays the leak point upper and lower end effect of sealing marine riser.
Symmetrical locating stud, hanger on the described body are fixed on the marine riser outside by the lock bolt combination, by gasket seal sealing marine riser leakage point both sides.
Described body, Gland and bolt, packing seal, gasket seal are bilateral symmetry two-part, are connected by lock bolt.
Main effect of the present utility model:
1) the sealing apparatus structure is simple, and cost of investment is low, easy for installation.
2) can when normal production or abandoned well operation, prevent that annular space oily water or oil-cut mud from leaking, and protects the marine environment.
Description of drawings
Fig. 1 is the structural representation of model utility;
Fig. 2 is the plan view of model utility.
Embodiment
Below in conjunction with accompanying drawing specific implementation method of the present invention is further described.
As shown in Figure 1, 2, packing seal 3 can be fixed on the body 4 by Gland and bolt 2 in advance on ground.Lift pin 1 can make Gland and bolt 2 mention easily, the convenient installation, and after Gland installed, lift pin 1 can be laid down.
When well head is installed, can be connected to by compressed air hoist and slowly send body 4 to the outside leakage point of marine riser on the hanger 6, by lock bolt combination 7 seal arrangement is locked at the marine riser outside.Lock bolt make up 7 urgent after, can make seal arrangement be fixed on the marine riser outside by locating stud 5, prevent its down sliding.Guarantee when mounted leakage point between two groups of packing seals 3, by packing seal 3 seal leakage point upper and lower end, gasket seal 8 is fixed in the body 4 by lock bolt combination 7, plays seal leakage point double side acting, can guarantee so the fully sealing of leakage point.
Claims (3)
1. ocean marine riser outer seal device, formed by lift pin, Gland, sealing gasket, body, it is characterized in that in up and down symmetrical lift pin (1), Gland and bolt (2), packing seal (3) of body (4), play the leak point upper and lower end effect of sealing marine riser.
2. according to ocean claimed in claim 1 marine riser outer seal device, it is characterized in that the upper symmetrical locating stud (5) of body (4), hanger (6), be fixed on the marine riser outside by lock bolt combination (7), by gasket seal (8) sealing marine riser leakage point both sides.
3. according to ocean claimed in claim 1 marine riser outer seal device, it is characterized in that body (4), Gland and bolt (2), packing seal (3), gasket seal (8) are bilateral symmetry two-part, connect by lock bolt combination (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220275765 CN202674702U (en) | 2012-06-07 | 2012-06-07 | Outer sealing device for marine riser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220275765 CN202674702U (en) | 2012-06-07 | 2012-06-07 | Outer sealing device for marine riser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674702U true CN202674702U (en) | 2013-01-16 |
Family
ID=47495608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220275765 Expired - Fee Related CN202674702U (en) | 2012-06-07 | 2012-06-07 | Outer sealing device for marine riser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202674702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720918A (en) * | 2012-06-07 | 2012-10-10 | 中国海洋石油总公司 | Outer sealing device for marine riser |
-
2012
- 2012-06-07 CN CN 201220275765 patent/CN202674702U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720918A (en) * | 2012-06-07 | 2012-10-10 | 中国海洋石油总公司 | Outer sealing device for marine riser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20170607 |