CN2804363Y - Hot extraction casing head with double casing slip - Google Patents
Hot extraction casing head with double casing slip Download PDFInfo
- Publication number
- CN2804363Y CN2804363Y CN 200520111564 CN200520111564U CN2804363Y CN 2804363 Y CN2804363 Y CN 2804363Y CN 200520111564 CN200520111564 CN 200520111564 CN 200520111564 U CN200520111564 U CN 200520111564U CN 2804363 Y CN2804363 Y CN 2804363Y
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- CN
- China
- Prior art keywords
- slip
- conical surface
- sleeve
- slips
- gland
- 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 relates to a hot extraction casing head with a double slip for a thick oil hot extraction well, which belongs to a well head mechanical device for a petroleum drilling well. The utility model is mainly composed of a pressing cover (2), a slip seat (5), a lower slip (6), a main body (7), etc., wherein an upper slip (3) which is inversely assembled and a slip sleeve (4) are arranged between the slip seat (5) and the pressing cover (2), the inner part of the slip sleeve (4) also has a conical surface, the directions of the big end and the small end of the conical surface of the slip sleeve (4) are opposite to that of the conical surface of the inner part of the slip seat (5), namely, the end which is adjacent to the pressing cover is the small end of the conical surface. The outer surface of the upper slip (3) is matched with the conical surface of the inner part of the slip sleeve (4), and the direction of each tooth of the upper slip (3) is opposite to that of each tooth of the lower slip. The utility model adopts the structure that the upper slip (3) and the slip sleeve (4) are inversely arranged on the upper part of the lower slip (6), the inner conical surface of the slip sleeve (4) can drive inverse teeth of the upper slip (3)to embed a sleeve tube (1), and the slip sleeve (1) can be tightly pressed by the pressing cover (2); consequently, the sleeve tube can be tightly embraced by the upper slip (3) so as to achieve the aim of preventing the sleeve tube from sliding upwards.
Description
Technical field
The utility model relates to the well head control plant equipment of (gas) well that recovers the oil in the field produces, and particularly a kind of thick oil thermal extraction dual-grip thermal extraction casing head belongs to oil drilling bank head machinery device.
Background technology
At present, the thermal extraction casing head that the oil field is installed and used in the drilling and well completion process has the following disadvantages: in order to prevent to scurry on the sleeve pipe, seal high temperature, high steam in it, the top of sleeve pipe need be amputated, load onto crossover sub, and it and sleeve pipe are welded, compress with gland again.Bring following problem thus: at first, the complicated cost height of execute-in-place, the well site potential safety hazard of getting angry is big; Secondly, field Welding difficulty big (overhead welding can not be incubated) can't guarantee welding quality.
Summary of the invention
The purpose of this utility model is to provide a kind of dual-grip thermal extraction casing head that prevents to scurry on the sleeve pipe and need not amputate sleeve pipe top.
The utility model is mainly by gland 2, slip spider 5, lower slips 6, body 7 is formed, gland 2 relies on thread connection in the top of body 7, body 7 inner chambers are processed with a step, slip spider 5 is loaded on body 7 inside, the step of the conical surface of slip spider 5 external surfaces and body 7 inner chambers is suitable, slip spider 5 inner chambers have bellmouth, the big end of bellmouth is positioned near gland 2 ends, lower slips 6 is equipped with in slip spider 5 inside, between slip spider 5 and gland 2, also design upper slips 3 and the slip sleeve 4 that upside-down mounting is arranged, open slip sleeve 4 inside also the conical surface, its conical surface is big, little extreme direction is opposite with the direction of the conical surface of slip spider 5 inside, be conical surface small end near gland 2 ends promptly, the conical surface of the external surface of upper slips 3 and slip sleeve 4 inside is suitable, and the slips tooth direction of the upper slips 3 also direction with the slips tooth of lower slips 6 is opposite.
The utility model adopts the structure of loading onto slips 3 and slip sleeve 4 in the inverted upper of lower slips 6, utilize the pawl of the inner conical surface driving upper slips 3 of slip sleeve 4 to embed sleeve pipe 1, and compress slip sleeve 4 by gland 2, thus force upper slips 3 to hold sleeve pipe 1 tightly, reach and prevent the purpose of scurrying on the sleeve pipe.
Description of drawings
Fig. 1 the utility model structural representation
The specific embodiment
As shown in Figure 1, the utility model is mainly by gland 2, slip spider 5, lower slips 6, body 7 is formed, gland 2 relies on thread connection in the top of body 7, body 7 inner chambers are processed with a step, slip spider 5 is loaded on body 7 inside, the step of the conical surface of slip spider 5 external surfaces and body 7 inner chambers is suitable, slip spider 5 inner chambers have bellmouth, the big end of bellmouth is positioned near gland 2 ends, lower slips 6 is equipped with in slip spider 5 inside, lower slips 6 inner chambers have equally distributed vertically annular tooth, of the present utility model being characterised in that: between slip spider 5 and gland 2, also design upper slips 3 and the slip sleeve 4 that upside-down mounting is arranged, open slip sleeve 4 inside also the conical surface, its conical surface is big, little extreme direction is opposite with the direction of the conical surface of slip spider 5 inside, be conical surface small end near gland 2 ends promptly, the conical surface of the external surface of upper slips 3 and slip sleeve 4 inside is suitable, and the slips tooth direction of the upper slips 3 also direction with the slips tooth of lower slips 6 is opposite.
After having descended sleeve pipe, be sleeved on after the lower slips that assembles 6 and slip spider 5 assembled in the annular space that sleeve pipe 1 and body 7 form, the slips tooth of lower slips 6 cooperates in order to seat with slip spider 5 cone structures and tangles sleeve pipe, install slips 3 and slip sleeve 4 then on the top of slip spider 5, compress slip sleeve 4 by gland 2, when scurrying on the sleeve pipe 1, the pawl that the inner conical surface of slip sleeve 4 drives upper slips 3 embeds sleeve pipe 1, thereby force upper slips 3 to hold sleeve pipe 1 tightly, reach and prevent the purpose of scurrying on the sleeve pipe.
Claims (1)
1. dual-grip thermal extraction casing head, mainly by gland (2), slip spider (5), lower slips (6), body (7) is formed, gland (2) relies on thread connection in the top of body (7), body (7) inner chamber is processed with a step, slip spider (5) is loaded on body (7) inside, the step of the conical surface of slip spider (5) external surface and body (7) inner chamber is suitable, slip spider (5) inner chamber has bellmouth, the big end of bellmouth is positioned near gland (2) end, lower slips (6) is equipped with in slip spider (5) inside, it is characterized in that: between slip spider (5) and gland (2), also design upper slips (3) and the slip sleeve (4) that upside-down mounting is arranged, slip sleeve (4) inside also has the conical surface, its conical surface is big, little extreme direction is opposite with the direction of the conical surface of slip spider (5) inside, promptly be conical surface small end near gland (2) end, the inner conical surface of the external surface of upper slips (3) and slip sleeve (4) is suitable, and the slips tooth direction of upper slips (3) the also direction with the slips tooth of lower slips (6) is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520111564 CN2804363Y (en) | 2005-06-16 | 2005-06-16 | Hot extraction casing head with double casing slip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520111564 CN2804363Y (en) | 2005-06-16 | 2005-06-16 | Hot extraction casing head with double casing slip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2804363Y true CN2804363Y (en) | 2006-08-09 |
Family
ID=36909657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520111564 Expired - Lifetime CN2804363Y (en) | 2005-06-16 | 2005-06-16 | Hot extraction casing head with double casing slip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2804363Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015939A (en) * | 2012-12-21 | 2013-04-03 | 东营鑫华莲石油机械有限公司 | Protective device for thermal recovery well mouth |
-
2005
- 2005-06-16 CN CN 200520111564 patent/CN2804363Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015939A (en) * | 2012-12-21 | 2013-04-03 | 东营鑫华莲石油机械有限公司 | Protective device for thermal recovery well mouth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081212 Address after: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee after: Western Drilling Kelamayi Drilling Technology Institute Address before: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee before: Research Inst of Drilling Technology, Xinjiang Petroleum Administration |
|
| ASS | Succession or assignment of patent right |
Owner name: WEST DRILLING KARAMAY DRILLING CRAFT RESEARCH INST Free format text: FORMER OWNER: DRILLING WELL TECHNOLOGY INSTITUTE, PETROLEUM ADMINISTRATION BUREAU, XINJIANG Effective date: 20081212 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150616 Granted publication date: 20060809 |