CN202039832U - Oil seal of under balance pressure drilling rotating control device - Google Patents
Oil seal of under balance pressure drilling rotating control device Download PDFInfo
- Publication number
- CN202039832U CN202039832U CN2011200557267U CN201120055726U CN202039832U CN 202039832 U CN202039832 U CN 202039832U CN 2011200557267 U CN2011200557267 U CN 2011200557267U CN 201120055726 U CN201120055726 U CN 201120055726U CN 202039832 U CN202039832 U CN 202039832U
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- oil seal
- oil
- oil sealing
- seal
- rotating control
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Abstract
The utility model discloses an oil seal of an under balance pressure drilling rotating control device. The oil seal comprises an oil seal support seat (1), an oil seal body (2), an O-shaped ring (3) and an oil seal skeleton (4), wherein the oil seal skeleton (4) is mounted inside the oil seal body (2); the O-shaped ring (3) is mounted in a seal groove of the oil seal body (2); and the oil seal support seat (1) is wrapped at the bottom of the oil seal body (2) through sulfurization to integrally form a combined oil seal made of two different materials. The utility model has the advantages that the oil seal has stronger wearing resistance and temperature resistance; the sealability of the oil seal in rotation is higher than that of similar products; the oil seal can seal rated static pressure and rated dynamic pressure without the aid of any external conditions, so that the oil is saved, and a rubber core is saved; and the structure is simple, the cost is low, the wearing capacity of the oil seal component is balanced, and the service life of a seal body is prolonged.
Description
Technical field
The utility model relates to control device, is specifically related to the oil sealing of the under balance pressure drilling rotating control assembly that uses in a kind of oil under balance pressure drilling.
Background technology
Under-balanced drilling technology is full-fledged at present, and under-balanced drilling technology also obtains approval in the effect of finding and protect aspects such as oil-gas Layer and raising bit speed.Along with petroleum industry develops rapidly, field of oil drilling with under-balanced drilling technology as a kind of one preferred technique.
Under balance pressure drilling is exactly in crossing of drilling well claims, the pressure that the stratum produces in the pit shaft is greater than under the pressure of drilling well circulation meson density generation all the time, and band is compressed into capable under-balance drilling operation.During pressure that the pressure that the stratum produces in the pit shaft produces greater than drilling well circulatory mediator density, bottom pressure will push away drilling well circulatory mediator high speed uplink, if well head does not have control device, the blowout phenomenon will take place.In order to address this problem, just need swivel control head to be installed and to finish this process at well head.
Domestic employed swivel control head type mostly is the WILLIAMS and the SHAFFER of high price import, and is wherein in the majority with WILLIAMS.On the one hand, the high pressure WILLIAMS7100EP swivel control head assembly 35MPa of anti-static pressure the, dynamic pressure 17.5MPa, the controlled pressure of the balance well of studying intensively generally is no more than 5MPa at present; The maintenance cost of WILLIAMS7100EP swivel control head is expensive unusually on the other hand, more than 500 ten thousand yuans of cover swivel control head prices, and a cover bearing unit repair expense is about 200,000 yuans; Domestic research in this respect occupy the leading position with Sichuan, they developed oneself in, low pressure (3MPa, 7MPa, 10.5MPa) swivel control head product, and use at the scene, but the oil sealing sealing of this swivel control head is poor, wear extent is big, and application life is short.
Summary of the invention
The purpose of this utility model is: a kind of oil sealing of under balance pressure drilling rotating control assembly is provided, solves oil sealing problem easy to wear, improve sealing, prolong the application life of oil sealing.
Technical solution of the present utility model is: oil sealing comprises oil sealing supporting seat, oil sealing body, O type circle and oil tight skeleton, oil tight skeleton is installed in the inside of oil sealing body, O shape circle is installed in the seal groove of oil sealing body, the oil sealing supporting seat is wrapped in the bottom of oil sealing body through sulfuration, the whole combination oil seal of being made up of two kinds of different materials that forms.
During use, oil sealing cooperates in the seal receptacle that is installed in swivel control head with last static seal body and following static seal body respectively.
The utlity model has following advantage: 1, owing to the complementarity of two kinds of material properties, this oil sealing has very strong wear-resisting and resistance to elevated temperatures, and the sealing performance during rotation exceeds like product; 2, this oil sealing can not sealed the rated pressure of static pressure and dynamic pressure by any external condition, especially saves oil plant, saves the glue core, should be comparatively desirable rotary oil seal; 3, simple in structure, with low cost, balanced Oil sealing assembly wear extent prolongs the seal long service life.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1 oil sealing supporting seat, 2 oil sealing bodies, 3 O shapes circle, 4 oil tight skeletons.
The specific embodiment
As shown in Figure 1, oil sealing comprises oil sealing supporting seat 1, oil sealing body 2, O type circle 3 and oil tight skeleton 4, oil tight skeleton 4 is installed in the inside of oil sealing body 2, O shape circle 3 is installed in the seal groove of oil sealing body 2, oil sealing supporting seat 1 is wrapped in the bottom of oil sealing body 2 through sulfuration, the whole combination oil seal of being made up of two kinds of different materials that forms.
During use, oil sealing cooperates in the seal receptacle that is installed in swivel control head with last static seal body and following static seal body respectively.
Claims (1)
1. the oil sealing of under balance pressure drilling rotating control assembly, it is characterized in that: oil sealing comprises oil sealing supporting seat (1), oil sealing body (2), O type circle (3) and oil tight skeleton (4), oil tight skeleton (4) is installed in the inside of oil sealing body (2), O shape circle (3) is installed in the seal groove of oil sealing body (2), oil sealing supporting seat (1) is wrapped in the bottom of oil sealing body (2) through sulfuration, the whole combination oil seal of being made up of two kinds of different materials that forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200557267U CN202039832U (en) | 2011-03-05 | 2011-03-05 | Oil seal of under balance pressure drilling rotating control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200557267U CN202039832U (en) | 2011-03-05 | 2011-03-05 | Oil seal of under balance pressure drilling rotating control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202039832U true CN202039832U (en) | 2011-11-16 |
Family
ID=44967281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200557267U Expired - Fee Related CN202039832U (en) | 2011-03-05 | 2011-03-05 | Oil seal of under balance pressure drilling rotating control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202039832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499690A (en) * | 2016-11-01 | 2017-03-15 | 北京航空航天大学 | A kind of hydraulic swing motor of frame-type sealing |
-
2011
- 2011-03-05 CN CN2011200557267U patent/CN202039832U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499690A (en) * | 2016-11-01 | 2017-03-15 | 北京航空航天大学 | A kind of hydraulic swing motor of frame-type sealing |
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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: 20111116 Termination date: 20130305 |