CN102400656A - Dual-seal connected blowout preventer - Google Patents

Dual-seal connected blowout preventer Download PDF

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Publication number
CN102400656A
CN102400656A CN2011103347655A CN201110334765A CN102400656A CN 102400656 A CN102400656 A CN 102400656A CN 2011103347655 A CN2011103347655 A CN 2011103347655A CN 201110334765 A CN201110334765 A CN 201110334765A CN 102400656 A CN102400656 A CN 102400656A
Authority
CN
China
Prior art keywords
flashboard
flashboards
closed
leading screw
semi
Prior art date
Application number
CN2011103347655A
Other languages
Chinese (zh)
Inventor
李中标
徐彬
张树平
顾国才
魏志强
杨传还
Original Assignee
盐城市大冈石油工具厂有限责任公司
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 盐城市大冈石油工具厂有限责任公司 filed Critical 盐城市大冈石油工具厂有限责任公司
Priority to CN2011103347655A priority Critical patent/CN102400656A/en
Publication of CN102400656A publication Critical patent/CN102400656A/en

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Abstract

The invention provides a dual-seal connected blowout preventer, comprising a main body, side doors, locking lead screws, semi-closed flashboards and totally closed flashboards, wherein the middle part of the main body is provided with a main channel, flashboard mold cavities are symmetrically arranged at two sides of the main channel, the side doors are arranged at outer ends of the flashboard mold cavities, the semi-closed flashboards are arranged in the flashboard mold cavities, and the locking lead screws penetrate through the side doors and are connected with the semi-closed flashboard; and the totally closed flashboards are arranged in the semi-closed flashboards, the inner ends of the locking lead screws are connected with the totally closed flashboards, and the locking lead screws are respectively connected with the semi-closed flashboards and the totally closed flashboards through left hand threads and right hand threads, so that the locking lead screws are rotated clockwise and anticlockwise to realize the semi closure, the total closure and the full opening of a well hole. The dual-seal connected blowout preventer provided by the invention is reasonable in structure and easy to manufacture, the functions of semi closure and total closure can be realized on a same horizontal plane, thus, the blowout preventer is effectively reduced in integral height and is convenient to operate, and the working efficiency is increased.

Description

Two envelope disjunctor preventers
Technical field
The invention belongs to the petroleum machinery technical field, specifically, is a kind of two envelope disjunctor preventers that half-sum is sealed function entirely that have.
Background technology
In oilfield drilling and maintenance process, well kick and gas blowout accident happen occasionally, and must use preventer to seal well head, to guarantee the safety of operating personnel and equipment.Have for adapting in the well head, no oil pipe all can shunt in a well; The double ram type preventer that uses at present mainly is made up of housing, half-closed type flashboard assembly and full-enclosed type flashboard assembly, and half-closed type flashboard assembly and full-enclosed type flashboard assembly go to upper and lower the two-layer left and right sides, main channel that is installed on housing.When in the well head oil pipe being arranged, adopt half-closed type flashboard assembly, hold oil pipe tightly, form sealing; When in the well head during no oil pipe, then adopt full-enclosed type flashboard assembly that well head is sealed.But, the axis of the half-closed type flashboard assembly of existing double ram type preventer and full-enclosed type flashboard assembly laterally arranges because going to upper and lower; In order to leave enough operating spaces; The spacing of two flashboard assemblies is bigger, has strengthened the overall height of preventer and the operation height of raised platform around a well, brings great inconvenience to operating personnel; Increase working strength, reduced operating efficiency.For this reason; The applicant has researched and developed the patent of invention that the patent No. is 200720045970.9, name is called the novel double-gate plate preventer; It is half-closed type flashboard assembly and full-enclosed type flashboard assembly to be gone to upper and lower to distribute be installed in the housing main channel, and the axis of half-closed type flashboard assembly and full-enclosed type flashboard assembly is perpendicular.Because the axis of half-closed type flashboard assembly and full-enclosed type flashboard assembly is vertical setting, and has dwindled the spacing of two flashboard assemblies, has reduced the whole height of preventer; But, the outfit of two cover flashboard assemblies, its structure is still complicated, and its whole height still awaits further reduction.
Summary of the invention
For overcoming the weak point of prior art; The present invention provide a kind of rational in infrastructure, in a plane, having constituted not only can half envelope, but also two envelope disjunctor preventers that can seal entirely, with solved existing double ram type preventer volume greatly, highly high, be awkward, ineffective problem.
The technical solution adopted for the present invention to solve the technical problems is: comprise body, side door, locking leading screw, partly seal flashboard and blind rams; The middle part of body is provided with the main channel, is provided with the flashboard die cavity to the bilateral symmetry of main channel, and the outer end of flashboard die cavity is provided with side door, partly seals flashboard and places in the flashboard die cavity, and the locking leading screw passes side door and partly seals flashboard and link to each other; It is characterized in that: blind rams is loaded in the half envelope flashboard, and the inner of locking leading screw links to each other with blind rams, and lock leading screw respectively through left-hand thread and right-hand thread with partly seal flashboard, blind rams links to each other.Thereby through clockwise, rotate counterclockwise the locking leading screw, realize half envelope of well head, full envelope, standard-sized sheet.
Be provided with limited step between left-hand thread on the above-mentioned locking leading screw and the right-hand thread, to make blind rams to the location of partly sealing in the flashboard of shrinking back.
The right-hand thread that above-mentioned locking leading screw is in the blind rams is provided with traveling nut so that blind rams is retracted into behind the flashboard die cavity fully no longer along with clockwise rotating of leading screw of locking continues to do horizontal narrowing movement.
Beneficial effect of the present invention is: it is rational in infrastructure, be easy to make, and on a horizontal plane, realizes half envelope, seals two kinds of functions entirely, has reduced the whole height of preventer effectively, and is easy to operate, has improved operating efficiency.
Description of drawings
Fig. 1 is in the structural representation of full-gear for the present invention;
Fig. 2 is the structural representation of locking leading screw among the present invention;
Fig. 3 is in the structural representation of half envelope state for the present invention;
The structural representation of Fig. 4 full envelope state for the present invention is in.
Among the figure: 1 for lock nut, 2 for the side door bolt, 3 for side door, 4 for the locking leading screw, 5 for body, 6 be half envelope flashboard, 7 be sealing before half envelope, 8 for the sealing of partly binding, 9 for sealing before the full envelope, 10 for blind rams, 11 for the sealing of binding entirely, 12 for traveling nut, 13 for limited step, 14 for bearing, 15 be that boss, 16 is that left-hand thread, 17 is a right-hand thread.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is made further detailed description.
Two envelope disjunctor preventer of the present invention comprises body 5, side door 3, locks leading screw 4, partly seals flashboard 6 and blind rams 10; The middle part of body 5 is provided with the main channel, is provided with the flashboard die cavity to the bilateral symmetry of main channel, and side door 3 is equipped with through side door bolt 2 in the outer end of flashboard die cavity, partly seals flashboard 6 and places in the flashboard die cavity; Lock nut 1 is equipped with in the outer end of locking leading screw 4, and its inner is passed side door 3 and partly sealed flashboard 6 and link to each other; On locking leading screw 4, be provided with boss 15 with the folded mutually place of side door 3, the both sides of boss 15 are provided with bearing 14, make locking leading screw 4 axial restraints; Blind rams 10 is loaded in the half envelope flashboard 6, and the inner of locking leading screw 4 links to each other with blind rams 10, and ecto-entad is provided with left-hand thread 16 and right-hand thread 17 on the locking leading screw 4, through left-hand thread 16 and right-hand thread 17 respectively with partly seal flashboard 6, blind rams 10 links to each other; Between left-hand thread 16 on the above-mentioned locking leading screw 4 and right-hand thread 17, be provided with limited step 13, to do the shrink back location of blind rams 10 in partly sealing flashboard 6.The right-hand thread 17 that above-mentioned locking leading screw 4 is in the blind rams 10 is provided with traveling nut 12, so that blind rams 10 is retracted into back in the half envelope flashboard 6 fully and no longer continues to do horizontal narrowing movement along with locking clockwise rotating of leading screw 4.Sealing 7 seals 8 with partly binding before the inner arc chamber of partly sealing flashboard 6 and upper surface are respectively equipped with half envelope; Sealing 9 seals 11 with binding entirely before the inner of blind rams 10 and upper and lower side are respectively equipped with full envelope.
During work, at first lower flange and the well head with body 5 is fixedly linked.
Under the normal operating conditions that need not shunt in a well, the left and right sides partly seal flashboard 6, blind rams 10 all should be in full-gear, referring to Fig. 1.
When needs half envelope shut-in well, the both sides locking leading screw 4 that then turns clockwise simultaneously from the preventer left and right sides makes half envelope flashboard 6 move to center, body 5 main channel; Till hugging oil pipe; Blind rams 10 is return in the half envelope flashboard 6, referring to Fig. 3 from fully open position simultaneously.When needs when opening half envelope flashboard 6, then be rotated counterclockwise locking leading screw 4 simultaneously from the left and right sides, withdraw from body 5 main channels fully until partly sealing flashboard 6.
When needs are shunt in a well entirely; Then be rotated counterclockwise both sides locking leading screw 4 simultaneously, blind rams 10 moved, to center, body 5 main channel till both sides blind rams 10 contacts from the preventer left and right sides; Sealing 9 compressed before slightly afterburning again rotation made full envelope; Simultaneously partly seal flashboard 6, return in the body 5, referring to Fig. 4 from fully open position.When needs when opening blind rams 10, the locking leading screw 4 that then turns clockwise simultaneously from the preventer left and right sides withdraws from body 5 main channels fully until blind rams 10 and shrinks back to partly sealing in the flashboard 6.

Claims (3)

1. two envelope disjunctor preventers comprise body, side door, locking leading screw, partly seal flashboard and blind rams; The middle part of body is provided with the main channel, is provided with the flashboard die cavity to the bilateral symmetry of main channel, and the outer end of flashboard die cavity is provided with side door, partly seals flashboard and places in the flashboard die cavity, and the locking leading screw passes side door and partly seals flashboard and link to each other; It is characterized in that: blind rams is loaded in the half envelope flashboard, and the inner of locking leading screw links to each other with blind rams, and lock leading screw respectively through left-hand thread and right-hand thread with partly seal flashboard, blind rams links to each other.
2. two envelope disjunctor preventer according to claim 1 is characterized in that: be provided with limited step between left-hand thread on the above-mentioned locking leading screw and the right-hand thread.
3. two envelope disjunctor preventer according to claim 1 and 2, it is characterized in that: the right-hand thread that above-mentioned locking leading screw is in the blind rams is provided with traveling nut.
CN2011103347655A 2011-10-31 2011-10-31 Dual-seal connected blowout preventer CN102400656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011103347655A CN102400656A (en) 2011-10-31 2011-10-31 Dual-seal connected blowout preventer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011103347655A CN102400656A (en) 2011-10-31 2011-10-31 Dual-seal connected blowout preventer

Publications (1)

Publication Number Publication Date
CN102400656A true CN102400656A (en) 2012-04-04

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CN2011103347655A CN102400656A (en) 2011-10-31 2011-10-31 Dual-seal connected blowout preventer

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103806858A (en) * 2014-02-28 2014-05-21 成都大漠石油机械有限公司 Simple box board blowout preventer

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844406A (en) * 1988-02-09 1989-07-04 Double-E Inc. Blowout preventer
CN201180514Y (en) * 2008-03-25 2009-01-14 盐城市大冈石油工具厂有限责任公司 Multifunctional gripper pipe blowout preventer
CN201232534Y (en) * 2008-04-30 2009-05-06 山东创佳石油机械制造有限公司 Wellhead rapid spraying device
CN201241656Y (en) * 2008-08-12 2009-05-20 颜廷杰 Double-ram blowout preventer of single layer cavity structure
CN201428415Y (en) * 2009-06-27 2010-03-24 东营市天亿石油工具制造有限公司 Quick pressure testing device of well mouth blowout preventer
CN201486510U (en) * 2009-03-09 2010-05-26 江苏省金峰石油机械制造有限公司 Full/half dual-purpose single gate disc blowout preventer
CN201802344U (en) * 2010-08-20 2011-04-20 中国石油天然气股份有限公司 High temperature resistant double-tube working blowout preventer
CN201883989U (en) * 2010-07-01 2011-06-29 江苏省金峰石油机械制造有限公司 Shearing full-closed ram blowout preventer having clamping function
CN202300298U (en) * 2011-10-31 2012-07-04 盐城市大冈石油工具厂有限责任公司 Double-sealing integral blowout preventer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844406A (en) * 1988-02-09 1989-07-04 Double-E Inc. Blowout preventer
CN201180514Y (en) * 2008-03-25 2009-01-14 盐城市大冈石油工具厂有限责任公司 Multifunctional gripper pipe blowout preventer
CN201232534Y (en) * 2008-04-30 2009-05-06 山东创佳石油机械制造有限公司 Wellhead rapid spraying device
CN201241656Y (en) * 2008-08-12 2009-05-20 颜廷杰 Double-ram blowout preventer of single layer cavity structure
CN201486510U (en) * 2009-03-09 2010-05-26 江苏省金峰石油机械制造有限公司 Full/half dual-purpose single gate disc blowout preventer
CN201428415Y (en) * 2009-06-27 2010-03-24 东营市天亿石油工具制造有限公司 Quick pressure testing device of well mouth blowout preventer
CN201883989U (en) * 2010-07-01 2011-06-29 江苏省金峰石油机械制造有限公司 Shearing full-closed ram blowout preventer having clamping function
CN201802344U (en) * 2010-08-20 2011-04-20 中国石油天然气股份有限公司 High temperature resistant double-tube working blowout preventer
CN202300298U (en) * 2011-10-31 2012-07-04 盐城市大冈石油工具厂有限责任公司 Double-sealing integral blowout preventer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103806858A (en) * 2014-02-28 2014-05-21 成都大漠石油机械有限公司 Simple box board blowout preventer

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Application publication date: 20120404

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