CN201539227U - Combined annular blowout preventer - Google Patents
Combined annular blowout preventer Download PDFInfo
- Publication number
- CN201539227U CN201539227U CN2009202451217U CN200920245121U CN201539227U CN 201539227 U CN201539227 U CN 201539227U CN 2009202451217 U CN2009202451217 U CN 2009202451217U CN 200920245121 U CN200920245121 U CN 200920245121U CN 201539227 U CN201539227 U CN 201539227U
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- CN
- China
- Prior art keywords
- upper shell
- glue core
- piston
- blowout preventer
- combined
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- Expired - Lifetime
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Abstract
The utility model discloses a combined annular blowout preventer comprising a lower shell and an upper shell, wherein the upper shell and the lower shell are connected through a screw rod I; a piston is arranged in an annular groove of the lower shell facing one end of the upper shell; a combined sealing ring I is arranged between the piston and the upper shell; a combined sealing ring II is arranged between the piston and the lower shell; a dust-proof ring is arranged between the piston and the upper shell; a combined sealing ring III is arranged between the dust-proof ring and the piston; a sealing ring I is arranged between the dust-proof ring and the lower shell; a sealing ring II is arranged between the dust-proof ring and the upper shell; a sphere glue core is arranged at the inner surface of the lower section of the upper shell; a barrel glue core I and a barrel glue core II are arranged at the inner surface of the upper section of the upper shell; the upper shell is provide with a malong sleeve assembly at a through hole outer port at a cylinder groove; and an end cover is arranged at the upper end port of the upper shell. The utility model has the advantages of simple and compact structure, convenient operation, safety and reliability, low use and maintaining cost and high well drilling and checking operation efficiency.
Description
Technical field
The utility model belongs to oil brill, well workover equipment technology field, relates to a kind of combined annular blowout preventer.
Background technology
The snubbing serving technology owing to have the operating efficiency height, can effectively protect the stratum, realize characteristics such as environmental protection operation, more and more is subject to people's attention in oil, gas exploration exploitation.Existing snubbing serving device in that well head band pressure is capable when playing lower tubular column, can only be realized that by the continuous switch of the flashboard of single ram type perventer and double ram type preventer operation is very slow, and need be furnished with special-purpose well liquid discharging recovery system; The snubbing serving device that also has, adopt spherical glue core in the annular preventer to embrace in the well tubing string and seal well head, realize band pressure is capable playing the lower tubular column operation, but the wearing and tearing of spherical glue core are very fast, operation a bite well just needs to change a glue core, and the price of spherical glue core is very expensive.In addition, the kill-job technology is mostly adopted in present drilling and repairing well operation, when increasing operating cost, has polluted ground environment hugely, has damaged the oil gas amount of gathering.
Summary of the invention
The purpose of this utility model provides a kind of combined annular blowout preventer, has solved the prior art complex structure, uses inconvenient, the high problem of maintenance use cost, is implemented in not kill-job, not under the situation of open flow, band pressure is capable when playing lower tubular column sealing well head.
The technical scheme that the utility model adopted is, a kind of combined annular blowout preventer, comprise lower house and the upper shell that is connected with lower house, lower house is provided with annular groove towards an end of upper shell, the piston that the cross section is the S type is installed in this annular groove, be provided with combined seal ring I between the outer shroud contact surface of piston and lower house, be provided with combined seal ring II between the interior loop contacts face of piston and lower house, be provided with dust ring between piston and the upper shell contact surface, combine with the mode of fin by groove between dust ring and the upper shell, be provided with combined seal ring III between dust ring and the piston contact surface, be provided with sealing ring I between the outer shroud contact surface of dust ring and lower house, be provided with sealing ring II between dust ring and the upper shell contact surface;
Hypomere inner surface at upper shell is provided with the ball-type groove, and spherical glue core is installed in this ball-type groove, and the lower end of spherical glue core contacts with the upper surface of piston;
Epimere inner surface at upper shell is provided with cylinder shape groove, from the axle center tubular glue core I, tubular glue core II outwards is installed successively in this cylinder shape groove, and upper shell outwards has through hole at the cylinder shape groove place, through hole collar extension and Malong cover assembly UNICOM;
The upper port of upper shell is provided with end cap, and alignment pin is installed on the end cap.
Combined annular blowout preventer of the present utility model, its feature also is:
Described spherical glue core is sphere or conical in shape.
Be connected by buckle or bolt-nut structure between described end cap and the upper shell.
Described tubular glue core I is made up of iron core and rubber I; Iron core is split type or monolithic construction.
Described tubular glue core II forms by rubber II and at the iron core I and the iron core II of the setting of rubber II two ends.
Described tubular glue core II selects for use cylindric or capsule shape.
Be provided with a support between the iron core of described tubular glue core II, support is two halves formula or monolithic, and circumferencial direction has a plurality of inlet openings.
Rubber II on the described tubular glue core II offers groove in the inner periphery direction.
The beneficial effect of the utility model device is, adopts the API flange of standard, realizes and being connected of bottom ram preventer group; Adopt tubular glue core, under the effect of Hydrauservo System, realize the sealing of well head, simple in structure, easy to use, guarantee in well, to play lower tubular column under the situation with pressure smoothly, raising is bored, workover treatment efficient, has reduced the maintenance use cost.
Description of drawings
Fig. 1 be the utility model device partly cut open front view;
Fig. 2 is the complete section face view of the tubular glue core I among Fig. 1;
Fig. 3 is the complete section face view of the tubular glue core II among Fig. 1.
Among the figure, 1. lower house, 2. piston, 3. combined seal ring I, 4. combined seal ring II, 5. combined seal ring III, 6. sealing ring I, 7. dust ring, 8. sealing ring II, 9. spherical glue core, 10. screw rod I, 11. upper shells, 12. tubular glue core I, 13. tubular glue core II, 14. Malongs cover assembly, 15. supports, 16. end cap, 17. alignment pins, 18. screw rod II, 19. iron cores, 20. rubber I, 21. iron core I, 22. rubber II, 23. iron core II.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
As Fig. 1, the structure of the utility model device is, comprise lower house 1 and upper shell 11, connect by screw rod I10 between lower house 1 and the upper shell 11, lower house 1 is provided with annular groove towards an end of upper shell 11, it is the piston 2 of S type that the cross section is installed in this annular groove, be provided with combined seal ring I3 between the outer shroud contact surface of piston 2 and lower house 1, be provided with combined seal ring II4 between the interior loop contacts face of piston 2 and lower house 1, be provided with dust ring 7 between piston 2 and upper shell 11 contact surfaces, combine with the mode of fin by groove between dust ring 7 and the upper shell 11, guarantee the position relative fixed, be provided with combined seal ring III5 between dust ring 7 and piston 2 contact surfaces, be provided with sealing ring I6 between the outer shroud contact surface of dust ring 7 and lower house 1, be provided with sealing ring II8 between dust ring 7 and upper shell 11 contact surfaces, hypomere inner surface at upper shell 11 is provided with the ball-type groove, spherical glue core 9 is installed in this ball-type groove, and the lower end of spherical glue core 9 contacts with the upper surface of piston 2; Be provided with the cylinder shape groove of step at the epimere inner surface of upper shell 11, tubular glue core I12, tubular glue core II13, support 15 outwards are installed successively from the axle center in this cylinder shape groove, upper shell 11 outwards has through hole at the cylinder shape groove place, and the through hole collar extension is equipped with Malong cover assembly 14;
The upper port of upper shell 11 is provided with end cap 16, alignment pin 17, screw rod II18 are installed on the end cap 16, are connected by buckle between end cap 16 and the upper shell 11, during installation after 120 ° of the rotations, plug alignment pin 17 again and get final product, quick and convenient to guarantee that operation field is changed the glue core.
Add wear-resisting circle by positive and negative combined seal ring between lower house 1 and the piston 2, make it reach optimal seal and wear-resisting effect.Spherical glue core 9 moves upward under the effect of hydraulic coupling by piston 2 and realizes shut-in well.Spherical glue core 9 can be spherical glue core, also can be other form of structure such as taper.
Can be connected by buckle between end cap 16 and the upper shell 11, also can adopt other structures such as bolt-nut.End cap 16 is connected with buckle between the upper shell 11, can adopt the special tool rotation to realize, also can adopt alternate manners such as knocking.
As Fig. 2, tubular glue core I12 is sulfided with rubber I20 by iron core 19 and forms, and also can not have iron core 19.Wherein iron core 19 is split type, also can be monolithic; When iron core 19 adopted split-type structural, under the effect of tubular glue core II13 in hydraulic coupling, iron core 19 can move to the well head center, also can be irremovable.
As Fig. 3, tubular glue core II13 is sulfided by iron core I21, the iron core II23 at two ends and rubber II22 and forms, and also can not have iron core I21, iron core II23.Tubular glue core II13 goes up rubber II22 and offers groove in the inner periphery direction, also can not offer groove.Tubular glue core II13 can adopt cylindric, also can adopt other structures such as capsule shape.Have a support 15 between the tubular glue core II13 iron core, also can adopt not other structure of belt supporting frame.Support 15 is the two halves formula, and circumferencial direction has a plurality of inlet openings; Support 15 is monolithic also, and only opens two or more inlet openings.
Tubular glue core I12 realizes shut-in well to the crimp of well head center by tubular glue core II13 under the effect of hydraulic coupling.
The Hydrauservo System that Malong cover assembly 14 connects is provided with one or more accumulators, also can not be with accumulator.Accumulator on the Hydrauservo System is fixed on the combined annular blowout preventer or is located at the combined annular blowout preventer next door nearby, also can be located at the place far away apart from combined annular blowout preventer.The pressure that Hydrauservo System provides press according to real well and tubular glue core I12 and tubing string between well liquid leakage different and adjust at any time, to reach best overall economic efficiency; Also hydraulic control system provides constant compression force, realizes shut-in well.
The physicochemical property of above-mentioned all metals that directly contact with well liquid and nonmetals parts meets the requirement of API16A antagonism H2S corrosive environment, also can not possess the requirement of anti-H2S corrosive environment.
Combination preventer of the present utility model, upper shell 11, lower house 1 are API standard flange interface with outside the connection, to guarantee the versatility of this device; Be connected by buckle between end cap 16 and the upper shell 11; Adopt screw rod I10 to connect between upper shell 11, the lower house 1, guaranteed the reliability that in high, connects under the pressure effect.Spherical glue core 9 moves upward under action of hydraulic force by piston 2 and realizes shut-in well; Extruding realizes shut-in well to the well head center under the effect of hydraulic coupling for tubular glue core I12, tubular glue core II13.
During operate as normal, mainly rely on tubular glue core I12, tubular glue core II13 and Hydrauservo System that the synergy of pressure is provided, by hydraulic control system, tubing string is embraced and sealed well head, to reach dynamic seal (packing) to tubing string; Under special circumstances, behind the wear out failure of tubular glue core II13, or when high pressure occurring suddenly, then rely on spherical glue core 9,, embrace corresponding tubing string by the oil pressure that control system provides, play lower tubular column by force, so that change tubular glue core II13 or handle high voltages hole condition, make it be in correct position, in order to subsequent job.
The utility model has the advantages that, be connected by buckle between end cap and the upper shell, be convenient to change tubular rubber core I and tubular rubber core II, and install simple and direct, convenient; Easily realize the annular space between sealing wellhead and the tubing string when playing lower tubular column by force with pressure, be easy to realize hydraulic servo control, reduce the wearing and tearing of tubular rubber core I, the working service cost significantly reduces, and operating efficiency obviously improves, and has satisfied the demand of snubbing serving.
Claims (8)
1. combined annular blowout preventer, it is characterized in that: comprise lower house (1) and the upper shell (11) that is connected with lower house (1), lower house (1) is provided with annular groove towards an end of upper shell (11), the piston that the cross section is the S type (2) is installed in this annular groove, be provided with combined seal ring I (3) between the outer shroud contact surface of piston (2) and lower house (1), be provided with combined seal ring II (4) between the interior loop contacts face of piston (2) and lower house (1), be provided with dust ring (7) between piston (2) and upper shell (11) contact surface, combine with the mode of fin by groove between dust ring (7) and the upper shell (11), be provided with combined seal ring III (5) between dust ring (7) and piston (2) contact surface, be provided with sealing ring I (6) between the outer shroud contact surface of dust ring (7) and lower house (1), be provided with sealing ring II (8) between dust ring (7) and upper shell (11) contact surface;
Hypomere inner surface at upper shell (11) is provided with the ball-type groove, and spherical glue core (9) is installed in this ball-type groove, and the lower end of spherical glue core (9) contacts with the upper surface of piston (2);
Epimere inner surface at upper shell (11) is provided with cylinder shape groove, tubular glue core I (12), tubular glue core II (13) outwards are installed successively from the axle center in this cylinder shape groove, upper shell (11) outwards has through hole at the cylinder shape groove place, through hole collar extension and Malong cover assembly (14) UNICOM;
The upper port of upper shell (11) is provided with end cap (16), and alignment pin (17) is installed on the end cap (16).
2. combined annular blowout preventer according to claim 1 is characterized in that: described spherical glue core (9) is sphere or conical in shape.
3. combined annular blowout preventer according to claim 1 is characterized in that: be connected by buckle or bolt-nut structure between described end cap (16) and the upper shell (11).
4. combined annular blowout preventer according to claim 1 is characterized in that: described tubular glue core I (12) is made up of with rubber I (20) iron core (19); Wherein iron core (19) is split type or monolithic construction.
5. combined annular blowout preventer according to claim 1 is characterized in that: described tubular glue core II (13) forms by rubber II (22) and at the iron core I (21) and the iron core II (23) of the setting of rubber II (22) two ends.
6. combined annular blowout preventer according to claim 1 or 5, it is characterized in that: described tubular glue core II (13) selects for use cylindric or capsule shape.
7. combined annular blowout preventer according to claim 5 is characterized in that: be provided with a support (15) between the iron core of described tubular glue core II (13), support (15) is two halves formula or monolithic, and circumferencial direction has a plurality of inlet openings.
8. combined annular blowout preventer according to claim 5 is characterized in that: the rubber II (22) on the described tubular glue core II (13) offers groove in the inner periphery direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202451217U CN201539227U (en) | 2009-11-06 | 2009-11-06 | Combined annular blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202451217U CN201539227U (en) | 2009-11-06 | 2009-11-06 | Combined annular blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539227U true CN201539227U (en) | 2010-08-04 |
Family
ID=42590681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202451217U Expired - Lifetime CN201539227U (en) | 2009-11-06 | 2009-11-06 | Combined annular blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539227U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705801B (en) * | 2009-11-06 | 2013-01-09 | 宝鸡石油机械有限责任公司 | Combined annular blowout preventer |
| CN104727774A (en) * | 2015-03-13 | 2015-06-24 | 成都大漠石油机械有限公司 | Wellhead blowout preventer for well repair |
| CN107313737A (en) * | 2017-06-30 | 2017-11-03 | 中国石油大学(华东) | Double glue core annular preventers |
| CN112647888A (en) * | 2021-03-12 | 2021-04-13 | 东营政阳自动化科技有限公司 | Combined annular blowout preventer for petroleum drilling |
-
2009
- 2009-11-06 CN CN2009202451217U patent/CN201539227U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705801B (en) * | 2009-11-06 | 2013-01-09 | 宝鸡石油机械有限责任公司 | Combined annular blowout preventer |
| CN104727774A (en) * | 2015-03-13 | 2015-06-24 | 成都大漠石油机械有限公司 | Wellhead blowout preventer for well repair |
| CN107313737A (en) * | 2017-06-30 | 2017-11-03 | 中国石油大学(华东) | Double glue core annular preventers |
| CN107313737B (en) * | 2017-06-30 | 2019-04-26 | 中国石油大学(华东) | Double glue core annular preventers |
| CN112647888A (en) * | 2021-03-12 | 2021-04-13 | 东营政阳自动化科技有限公司 | Combined annular blowout preventer for petroleum drilling |
| CN112647888B (en) * | 2021-03-12 | 2021-08-06 | 东营政阳自动化科技有限公司 | Combined annular blowout preventer for petroleum drilling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100804 Effective date of abandoning: 20091106 |
|
| RGAV | Abandon patent right to avoid regrant |