CN2811551Y - Simple decentralized wellhead - Google Patents
Simple decentralized wellhead Download PDFInfo
- Publication number
- CN2811551Y CN2811551Y CN 200520021251 CN200520021251U CN2811551Y CN 2811551 Y CN2811551 Y CN 2811551Y CN 200520021251 CN200520021251 CN 200520021251 CN 200520021251 U CN200520021251 U CN 200520021251U CN 2811551 Y CN2811551 Y CN 2811551Y
- Authority
- CN
- China
- Prior art keywords
- fixed cover
- oil pipe
- decentralized wellhead
- annular groove
- upper flange
- 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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- Earth Drilling (AREA)
Abstract
The utility model relates to a simple eccentric well head, which mainly solves the problems that the existing eccentric well head can not be rotated and testing tools are easily clamped. The utility model is characterized in that the connection between a fixing sleeve (2) and an upper flange (1) is a rotatable connection, and the connection between an oil tube (3) and the fixing sleeve (2) is also a rotatable connection. The simple eccentric well head not only the whole can be rotated, but also the oil pipe can be singly rotated, so the testing tools are not easily clamped.
Description
Technical field:
The utility model relates to used eccentric wellhead device in the oil recovery field, oil field, especially simple and easy decentralized wellhead.
Background technology:
In the oil recovery process of oil field, transfer testing tool in order to test toward the down-hole convenient, usually well head is designed to decentralized wellhead, the decentralized wellhead upper end of using at present fixes with flange and big four, can't rotate, when transferring testing tool when being hampered, steel wire is wrapped on the oil-pipe external wall easily, instrument does not reach MTD, even instrument is stuck and can't proposes.
The utility model content:
Can't rotate and easily make the jammed deficiency of testing tool in order to overcome existing decentralized wellhead, the utility model provides a kind of simple and easy decentralized wellhead, and this simple and easy decentralized wellhead not only integral body can rotate but also oil pipe can rotate separately, and testing tool is difficult for being stuck.
The technical solution of the utility model is: this simple and easy decentralized wellhead comprises upper flange, fixed cover, oil pipe and packing, between fixed cover and the upper flange for being rotatably connected, between oil pipe and the fixed cover also for being rotatably connected.
It is semicircular annular groove that above-mentioned fixed cover outer wall and upper flange inwall all have the cross section, is built-in with several steel balls at annular groove; It is semicircular annular groove that oil-pipe external wall and fixed cover inwall all have the cross section, is built-in with several steel balls at annular groove; Be fixed with the vent valve that import and export communicate with casing annulus and oil pipe respectively in the fixed cover; Packing is the flower basket type joint ring.
The utlity model has following beneficial effect: owing to take such scheme, when testing tool was hampered in the down-hole, rotatable oil pipe and fixed cover also can rotate oil pipe separately, solved the testing tool down-hole problem that is hampered, and testing tool is difficult for being stuck.
Description of drawings:
Accompanying drawing 1 is a structure sectional view of the present utility model;
Accompanying drawing 2 is A-A sectional views among Fig. 1.
1-upper flange among the figure, 2-fixed cover, 3-oil pipe, 4-vent valve, 5-steel ball, 6-packing.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As Fig. 1 in conjunction with shown in Figure 2, this simple and easy decentralized wellhead comprises upper flange 1, fixed cover 2, oil pipe 3 and packing 6, packing 6 is the flower basket type joint ring, be fixed with the vent valve 4 that import and export communicate with casing annulus and oil pipe 3 respectively in the fixed cover 2, between fixed cover 2 and the upper flange 1 for being rotatably connected, it is semicircular annular groove that fixed cover 2 outer walls and upper flange 1 inwall all have the cross section, is built-in with several steel balls 5 at annular groove; Also for being rotatably connected, it is semicircular annular groove that oil pipe 3 outer walls and fixed cover 2 inwalls all have the cross section, is built-in with several steel balls 5 at annular groove between oil pipe 3 and the fixed cover 2.When testing tool was hampered in the down-hole, rotatable oil pipe 3 and fixed cover 2 also can rotate oil pipe 3 separately, solved the testing tool down-hole problem that is hampered, and testing tool is difficult for being stuck.
Claims (5)
1, a kind of simple and easy decentralized wellhead comprises upper flange (1), fixed cover (2), oil pipe (3) and packing (6), it is characterized in that: between fixed cover (2) and the upper flange (1) for being rotatably connected, between oil pipe (3) and the fixed cover (2) also for being rotatably connected.
2, simple and easy decentralized wellhead according to claim 1 is characterized in that: it is semicircular annular groove that fixed cover (2) outer wall and upper flange (1) inwall all have the cross section, is built-in with several steel balls (5) at annular groove.
3, simple and easy decentralized wellhead according to claim 1 is characterized in that: it is semicircular annular groove that oil pipe (3) outer wall and fixed cover (2) inwall all have the cross section, is built-in with several steel balls (5) at annular groove.
4, simple and easy decentralized wellhead according to claim 1 is characterized in that: be fixed with the vent valve (4) that import and export communicate with casing annulus and oil pipe (3) respectively in the fixed cover (2).
5, simple and easy decentralized wellhead according to claim 1 is characterized in that: packing (6) is the flower basket type joint ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021251 CN2811551Y (en) | 2005-07-14 | 2005-07-14 | Simple decentralized wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021251 CN2811551Y (en) | 2005-07-14 | 2005-07-14 | Simple decentralized wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2811551Y true CN2811551Y (en) | 2006-08-30 |
Family
ID=36937938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520021251 Expired - Fee Related CN2811551Y (en) | 2005-07-14 | 2005-07-14 | Simple decentralized wellhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2811551Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241962A (en) * | 2013-06-09 | 2014-12-24 | 上海翔洲电气科技有限公司 | Rotary Farah plate used for explosion-proof type cable connector |
| CN104241961A (en) * | 2013-06-09 | 2014-12-24 | 上海翔洲电气科技有限公司 | Explosive-proof cable connector |
-
2005
- 2005-07-14 CN CN 200520021251 patent/CN2811551Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241962A (en) * | 2013-06-09 | 2014-12-24 | 上海翔洲电气科技有限公司 | Rotary Farah plate used for explosion-proof type cable connector |
| CN104241961A (en) * | 2013-06-09 | 2014-12-24 | 上海翔洲电气科技有限公司 | Explosive-proof cable connector |
| CN104241961B (en) * | 2013-06-09 | 2018-08-21 | 上海翔洲电气科技有限公司 | Bolted flame-proof cable coupling device for mine |
| CN104241962B (en) * | 2013-06-09 | 2018-09-11 | 上海翔洲电气科技有限公司 | Rotary method pulling plate for bolted flame-proof cable coupling device for mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060830 Termination date: 20130714 |