CN201428415Y - Quick pressure testing device of well mouth blowout preventer - Google Patents

Quick pressure testing device of well mouth blowout preventer Download PDF

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Publication number
CN201428415Y
CN201428415Y CN2009200288719U CN200920028871U CN201428415Y CN 201428415 Y CN201428415 Y CN 201428415Y CN 2009200288719 U CN2009200288719 U CN 2009200288719U CN 200920028871 U CN200920028871 U CN 200920028871U CN 201428415 Y CN201428415 Y CN 201428415Y
Authority
CN
China
Prior art keywords
pressure testing
main
ball
seat
blowout preventer
Prior art date
Application number
CN2009200288719U
Other languages
Chinese (zh)
Inventor
徐建
郭晓强
蔺怀志
白良虎
王德宽
李晓林
张书青
蒋连全
Original Assignee
东营市天亿石油工具制造有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 东营市天亿石油工具制造有限公司 filed Critical 东营市天亿石油工具制造有限公司
Priority to CN2009200288719U priority Critical patent/CN201428415Y/en
Application granted granted Critical
Publication of CN201428415Y publication Critical patent/CN201428415Y/en

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Abstract

The utility model relates to a quick pressure testing device of a well mouth blowout preventer. The technical scheme is that the blowout preventer comprises a blowout preventer main body, a totally-enclosed shutter assembly and a semi-enclosed shutter assembly. An internally and externally through radial interface and a plug are arranged under the semi-enclosed shutter of the blowout preventer main body. The inner cavity of the blowout preventer main body is provided with a pressure testing short piece the main body upper part of which is provided with a joint and the lower part thereof is provided with a check valve. The middle and lower part of the main body of the pressure testing short piece is provided with an internally and externally through diversion hole. The utility model optimizes the fussy work procedure of the filed pressure test of the prior blowout preventer and is the pressure testing device which is simple, convenient, quick and convenient. The utility model uses the one-way check valve structure to release the excess pressure in the well automatically after the pressure test and release and prevents impact or flying off in the dismantling and assembling process ofthe pressure testing device. In this way, the sealing performance of the pressure testing device is better, the sealing performance and other aspects of the product are more stable and the use is safer.

Description

The quick pressure testing device of wellhead blowout preventor

Technical field

The utility model relates to the wellhead assembly of a kind of oil field well workover effect, specifically is the quick pressure testing device of a kind of wellhead blowout preventor.

Background technology

In the oil well repairing operation process, because the well site condition restriction adds that preventer (primary structure is preventer main body, blind rams assembly and partly seals the flashboard assembly) is contained on the well head, brings very big inconvenience to pressure testing.Be in sleeve pipe or oil pipe, to suppress after the blanking plug water filling down at present, so also can only pressure testing half envelope state, can't seal the state pressure testing entirely.The pressure testing of wellhead blowout preventor is the guarantee prerequisite of workover treatment safety, and general well control requirement must pressure testing before every mouthful of well construction.But because existing pressure testing process is loaded down with trivial details, causing that pressure testing efficient is low, measuring accuracy is poor, when blowout occurring, is not that well head has problem, is exactly that preventer has leakage, is easy to take place great gas blowout accident.

The utility model content

The purpose of this utility model is exactly the defective that exists at prior art, a kind of quick, the safe quick pressure testing device of wellhead blowout preventor of innovating, transforming and propose on the basis of existing wellhead blowout preventor.

The technical solution of the utility model is: this preventer comprises preventer main body, blind rams assembly and partly seals the flashboard assembly, partly seal radially interface and the plug that is provided with inside and outside conducting below the flashboard in the preventer main body, the inner chamber of preventer main body disposes the pressure testing pipe nipple, the main body top of this pressure testing pipe nipple is provided with joint, the bottom is provided with ball-and-seat, is provided with the inside and outside pod apertures that connects in pressure testing pipe nipple main body middle and lower part.

Such scheme also comprises: described ball-and-seat is plunger type or ball type structure.Described plunger type ball-and-seat comprises spool, pressure spring and valve seat; Described ball type ball-and-seat comprises spheroid, pressure spring and ball seat.The main body of this pressure testing pipe nipple and top sub and bottom ball-and-seat are screwed connection, the ball-and-seat bottom have and hanger between screw thread, the screw thread that the screw thread of pressure testing pipe nipple lower body part and ball-and-seat top have is reverse rotation.

Effect of the present utility model is: having optimized the existing preventer loaded down with trivial details operation of pressure testing at the scene, is a kind of easy, quick and easy pressure testing device.If interior fittings adopts corrosion-resistant, rustless martensitic material, can significantly improve its application life.Utilize unidirectional ball-and-seat structure, can after pressure testing finishes to have let out pressure, automatically the overbottom pressure in the well be discharged, prevent from dismounting pressure testing device process, to produce impact or fly out, make the pressure testing device sealing performance better like this, make each side such as product hermeticity energy stable more, use safer.

Description of drawings

Accompanying drawing 1 is a kind of structural representation of specific embodiment; Accompanying drawing 2 is structure enlarged diagrams of pressure testing pipe nipple part.

The specific embodiment:

With reference to accompanying drawing 1, well head big four 7 tops are fixedly connected with preventer main body 2, and preventer main body 2 axial bore and big four 7 connect, and pressure testing pipe nipple 1 is through the preventer inner chamber, and its lower end is sealed in the upper port of big four 7 by hanger 6 lockings.Distributing blind rams 4 and partly seal flashboard 3 (upper-lower position is interchangeable) of preventer main body 2 both sides, below the flashboard preventer main body 2 on be provided with radially flange-interface 5.With reference to accompanying drawing 2, the top of the pressure testing pipe nipple main body 11 of pressure testing pipe nipple 1 connects central tube 10, and the top of central tube 10 is provided with joint 9, and pressure testing pipe nipple main body 11 bottoms are provided with ball-and-seat, is provided with the inside and outside pod apertures 8 that connects in the middle and lower part of central tube 10.The position that this pod apertures 8 is installed on behind the preventer should be below the flashboard of upper strata.The bottom of pressure testing pipe nipple main body 11 is provided with external screw thread so that be connected with hanger 6.

Described ball-and-seat is a plunger-type structure.By plunger type spool 12, pressure spring 13, valve seat 15, sealing ring 14, up and down two regulate and piece together caps 16 and cooperate with pressure testing pipe nipple main body 11 lower chamber and form.

Provided a kind of typicalness embodiment above,, can carry out the adjustment of multiple mode such scheme according to the content of manual and claims.As: do not increase flange-interface on the preventer main body, but can only carry out half envelope pressure testing.

Described ball type ball-and-seat mainly comprises spheroid, pressure spring and ball seat, and is identical with existing ball type ball-and-seat structure.

Operating principle: before the job execution production tree is removed from big four, be screwed in hanger 6 on together with ball-and-seat the pressure-test short joint main body and tighten, preventer is installed on the big four, pour water to more than the blind rams, and shut blind rams, the hydraulic test pump joint is connected with flange-interface, so just can seals state entirely by the hydraulic test pump pressure testing.Examination is honored as a queen fully and is opened blind rams, lay down the hydraulic test pump joint and block flange-interface, load onto pressure testing pipe nipple central tube then and (annotate: left-hand thread) tighten, pour water to partly sealing flashboard with plug, close half envelope flashboard, the hydraulic test pump joint is connected with short joint carries out half envelope and whole pressure testing like this.After having tried to press, unclamp half envelope flashboard, pressure testing pipe nipple integral body is laid down, and whole like this pressure testing process finishes.In this pressure testing process,, play the pressure process and only need about 5 minutes if be equipped with the manual double plunger hydraulic test pump that matches with it.If be equipped with pressure testing microelectronics recorder again, effectively write down the overall process of whole pressure testing, inspecting for acceptance for well control provides genuine and believable foundation.

Claims (4)

1, the quick pressure testing device of a kind of wellhead blowout preventor, this preventer comprises preventer main body, blind rams assembly and partly seals the flashboard assembly, it is characterized in that: partly seal radially interface and the plug that is provided with inside and outside conducting below the flashboard in the preventer main body, the inner chamber of preventer main body disposes the pressure testing pipe nipple, the main body top of this pressure testing pipe nipple is provided with joint, the bottom is provided with ball-and-seat, is provided with the inside and outside pod apertures that connects in pressure testing pipe nipple main body middle and lower part.
2, the quick pressure testing device of wellhead blowout preventor according to claim 1 is characterized in that: described ball-and-seat is plunger type or ball type structure.
3, the quick pressure testing device of wellhead blowout preventor according to claim 2 is characterized in that: described plunger type ball-and-seat comprises spool, pressure spring and valve seat; Described ball type ball-and-seat comprises spheroid, pressure spring and ball seat.
4, the quick pressure testing device of wellhead blowout preventor according to claim 1, it is characterized in that: the main body of this pressure testing pipe nipple and top sub and bottom ball-and-seat are screwed connection, the ball-and-seat bottom have and hanger between screw thread, the screw thread that the screw thread of pressure testing pipe nipple lower body part and ball-and-seat top have is reverse rotation.
CN2009200288719U 2009-06-27 2009-06-27 Quick pressure testing device of well mouth blowout preventer CN201428415Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200288719U CN201428415Y (en) 2009-06-27 2009-06-27 Quick pressure testing device of well mouth blowout preventer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200288719U CN201428415Y (en) 2009-06-27 2009-06-27 Quick pressure testing device of well mouth blowout preventer

Publications (1)

Publication Number Publication Date
CN201428415Y true CN201428415Y (en) 2010-03-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200288719U CN201428415Y (en) 2009-06-27 2009-06-27 Quick pressure testing device of well mouth blowout preventer

Country Status (1)

Country Link
CN (1) CN201428415Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102400656A (en) * 2011-10-31 2012-04-04 盐城市大冈石油工具厂有限责任公司 Dual-seal connected blowout preventer
CN104727756A (en) * 2015-02-10 2015-06-24 中国石油天然气股份有限公司 Short piece used for pressure test on well plugging device casing pipe
CN104791568A (en) * 2015-02-28 2015-07-22 美钻能源科技(上海)有限公司 Underwater rapid plug device with flexible component
CN104975818A (en) * 2015-06-30 2015-10-14 中国石油天然气股份有限公司 Device and technological method for pulling lower oil tube

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102400656A (en) * 2011-10-31 2012-04-04 盐城市大冈石油工具厂有限责任公司 Dual-seal connected blowout preventer
CN104727756A (en) * 2015-02-10 2015-06-24 中国石油天然气股份有限公司 Short piece used for pressure test on well plugging device casing pipe
CN104791568A (en) * 2015-02-28 2015-07-22 美钻能源科技(上海)有限公司 Underwater rapid plug device with flexible component
CN104975818A (en) * 2015-06-30 2015-10-14 中国石油天然气股份有限公司 Device and technological method for pulling lower oil tube
CN104975818B (en) * 2015-06-30 2017-05-10 中国石油天然气股份有限公司 Device and technological method for pulling lower oil tube

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100324

Termination date: 20110627

C17 Cessation of patent right