CN204984337U - Drilling rod back pressure blowout preventer for marine rig - Google Patents
Drilling rod back pressure blowout preventer for marine rig Download PDFInfo
- Publication number
- CN204984337U CN204984337U CN201520531588.3U CN201520531588U CN204984337U CN 204984337 U CN204984337 U CN 204984337U CN 201520531588 U CN201520531588 U CN 201520531588U CN 204984337 U CN204984337 U CN 204984337U
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- China
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- sealing mechanism
- lining
- riser
- bush
- main part
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Abstract
The utility model relates to a drilling rod back pressure blowout preventer for marine rig, its technical scheme is: including main part, bearing, sealing mechanism, bush, pressure cap, the main part is the toper structure, and the inside of main part is hollow structure, the front end stationary support seat of main part, the inside of main part is equipped with sealing mechanism, sealing mechanism's front end to pass through the bearing fixed, sealing mechanism's rear end pass through the bush and connect, the outer tip of bush through pressing the cap fixed, sealing mechanism include rocket body, riser, spring, the rocket body on be equipped with the spring, the spring lie in between riser and the bush riser sealing connection on the interior tip of bush and the sealing mechanism, the beneficial effects of the utility model are that: simple structure, convenient to use has effectively improved drilling operation efficiency, prevents that ground voltol oil air current in place gets into the drilling tool hydrophthalmia in the work, guarantees the normal work of rig.
Description
Technical field
The utility model relates to a kind of drilling equipment, particularly a kind of marine rig drilling rod back pressure blowout hookup.
Background technology
Marine rig is the capital equipment of marine drilling, and the most equipment in marine rig all can be general with land rig; In drilling well, kelly bar, drilling rod, drill collar etc. with cooperation joint couple together composition downhole pipe string, be called drill string.Transmission, the mud circulation of drillng operation medium power and such as core, process other operations such as complex situations, drillstem test, all will rely on drill string to carry out.Thus drill string is the hinge of UNICOM's platform and underground, is in very consequence.Drilling rod back pressure valve is a kind of drilling tool of special construction, and drilling rod back pressure valve at work stratum inner high voltage gas stream enters drilling tool water hole, causes rig to work, affects normal drillng operation.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, provides a kind of marine rig drilling rod back pressure blowout hookup.
Its technical scheme is: comprise main body, supporting base, sealing mechanism, lining, pressure cap, the tapered structure of main body, the inside of main body is hollow structure, the front end fixed mounting base of described main body, the inside of main body is provided with sealing mechanism, the front end of described sealing mechanism is fixed by supporting base, the rear end of described sealing mechanism is connected by lining, the outer end of described lining is fixed by pressure cap, described sealing mechanism comprises rocket body, riser, spring, described rocket body is provided with spring, described spring is between riser and lining, riser on the inner end of lining and sealing mechanism is tightly connected.
The centre of above-mentioned pressure cap is provided with lifter cavity, and rocket body is located by lifter cavity through lifter cavity.
The inner end of above-mentioned lining is conical entrance, and the inner end of lining is provided with sealing mat.
Above-mentioned riser is that the conical entrance of conical structure and lining is combined closely.
The beneficial effects of the utility model are: structure is simple, easy to use, effectively improves drillng operation efficiency, prevents stratum inner high voltage gas stream in work and enter drilling tool water hole, ensure the normal work of rig.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is structural representations of sealing mechanism;
In upper figure: main body 1, supporting base 2, sealing mechanism 3, lining 4, pressure cap 5, sealing mat 6, rocket body 3.1, riser 3.2, spring 3.3, lifter cavity 5.1.
Detailed description of the invention
1-2 by reference to the accompanying drawings, the utility model will be further described:
The utility model comprises main body 1, supporting base 2, sealing mechanism 3, lining 4, pressure cap 5, the tapered structure of main body 1, the inside of main body 1 is hollow structure, the front end fixed mounting base 2 of main body 1, the inside of main body 1 is provided with sealing mechanism 3, the front end of sealing mechanism 3 is fixed by supporting base 2, the rear end of sealing mechanism 3 is connected by lining 4, the outer end of lining 4 is fixed by pressure cap 5, sealing mechanism 3 comprises rocket body 3.1, riser 3.2, spring 3.3, rocket body 3.1 is provided with spring 3.3, spring 3.3 is between riser 3.1 and lining 4, riser on the inner end of lining and sealing mechanism is tightly connected.
Wherein, the centre of pressure cap 5 is provided with lifter cavity 5.1, and rocket body 3.1 is located by lifter cavity 5.1 through lifter cavity 5.1.
Wherein, the inner end of lining 4 is conical entrance, and the inner end of lining 4 is provided with sealing mat 6.
Wherein, riser 3.2 is that the conical entrance of conical structure and lining 4 is combined closely.
Operating principle: when there is backflow, the riser of sealing mechanism 3 presses lining 4, liquid not by sealing mechanism 3 to upper reaches, during drilling fluid normal circulation, sealing mechanism 3 is fallen on supporting base 2, and drilling fluid passes through sealing mechanism 3 without pressure drop, ensure that the normal operation of drilling equipment, prevent stratum inner high voltage gas stream in work and enter drilling tool water hole, ensure the normal work of rig.
Claims (4)
1. a marine rig drilling rod back pressure blowout hookup, it is characterized in that: comprise main body, supporting base, sealing mechanism, lining, pressure cap, the tapered structure of main body, the inside of main body is hollow structure, the front end fixed mounting base of described main body, the inside of main body is provided with sealing mechanism, the front end of described sealing mechanism is fixed by supporting base, the rear end of described sealing mechanism is connected by lining, the outer end of described lining is fixed by pressure cap, described sealing mechanism comprises rocket body, riser, spring, described rocket body is provided with spring, described spring is between riser and lining, riser on the inner end of lining and sealing mechanism is tightly connected.
2. marine rig drilling rod back pressure blowout hookup according to claim 1, is characterized in that: the centre of described pressure cap is provided with lifter cavity, and rocket body is located by lifter cavity through lifter cavity.
3. marine rig drilling rod back pressure blowout hookup according to claim 1, is characterized in that: the inner end of described lining is conical entrance, and the inner end of lining is provided with sealing mat.
4. marine rig drilling rod back pressure blowout hookup according to claim 1, is characterized in that: described riser is that the conical entrance of conical structure and lining is combined closely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520531588.3U CN204984337U (en) | 2015-07-21 | 2015-07-21 | Drilling rod back pressure blowout preventer for marine rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520531588.3U CN204984337U (en) | 2015-07-21 | 2015-07-21 | Drilling rod back pressure blowout preventer for marine rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204984337U true CN204984337U (en) | 2016-01-20 |
Family
ID=55118716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520531588.3U Expired - Fee Related CN204984337U (en) | 2015-07-21 | 2015-07-21 | Drilling rod back pressure blowout preventer for marine rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204984337U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481295A (en) * | 2016-12-15 | 2017-03-08 | 成都市卓新实业有限公司 | A kind of back pressure valve |
| CN114233204A (en) * | 2021-12-08 | 2022-03-25 | 江苏和信石油机械有限公司 | Drilling and pumping integrated gas drill rod structure |
-
2015
- 2015-07-21 CN CN201520531588.3U patent/CN204984337U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481295A (en) * | 2016-12-15 | 2017-03-08 | 成都市卓新实业有限公司 | A kind of back pressure valve |
| CN114233204A (en) * | 2021-12-08 | 2022-03-25 | 江苏和信石油机械有限公司 | Drilling and pumping integrated gas drill rod structure |
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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 |
Granted publication date: 20160120 Termination date: 20160721 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |