CN107829708A - Multipurpose ball-and-seat - Google Patents

Multipurpose ball-and-seat Download PDF

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Publication number
CN107829708A
CN107829708A CN201711040499.9A CN201711040499A CN107829708A CN 107829708 A CN107829708 A CN 107829708A CN 201711040499 A CN201711040499 A CN 201711040499A CN 107829708 A CN107829708 A CN 107829708A
Authority
CN
China
Prior art keywords
main body
seat
ball
annular piston
spring
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201711040499.9A
Other languages
Chinese (zh)
Inventor
禹栽星
苗久厂
石莹
黄金
杨坤
张卫平
李青
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daqing Zhongke Laser Technology Co Ltd Service Completion
Original Assignee
Daqing Zhongke Laser Technology Co Ltd Service Completion
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 Daqing Zhongke Laser Technology Co Ltd Service Completion filed Critical Daqing Zhongke Laser Technology Co Ltd Service Completion
Priority to CN201711040499.9A priority Critical patent/CN107829708A/en
Publication of CN107829708A publication Critical patent/CN107829708A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00Valve arrangements for boreholes or wells
    • E21B34/06Valve arrangements for boreholes or wells in wells
    • E21B34/08Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Check Valves (AREA)

Abstract

The present invention relates to a kind of multipurpose ball-and-seat, including upper main body, lower main body, central tube, annular piston, spring, sealing ring composition, the side wall of described upper main body is circumferentially with some liquid-through holes, upper main body, to be threadedly coupled, is threaded in the inner side of main body, annular piston and spring are placed in the cavity between main body and central tube with lower main body beyond central tube, it is spring on annular piston, the periphery of annular piston is provided with sealing ring.Beneficial effect:A kind of multipurpose ball-and-seat proposed by the present invention is connected to the flushing fluid that can be injected on screw pump pumping pipe string in well-flushing season well head and enters pumping pipe string on pump;Ball-and-seat remains central longitudinal channel, in order to which pumping pipe string and screw pump rotor pass through from central longitudinal channel;Ball-and-seat is used in separate-zone producer, multistage can be used, and it is adjustable as needed to start pressure, and the hole of ball-and-seat is hard sealing, impact resistance, long lifespan.

Description

Multipurpose ball-and-seat
Technical field
The present invention relates to the downhole tool used in field of oil field oil extraction, more particularly to a kind of multipurpose ball-and-seat.
Background technology
In oil well production process, to realize the one-way flow of fluid, it need to be used under many circumstances on down-hole string Ball-and-seat;Such as hot water well-washing wax-cleaning is periodically injected into well, not make hot wash water pour into oil reservoir, palpus packer oil reservoir every Open, and correspond to oil reservoir position on tubing string and use ball-and-seat, oil reservoir production fluid when preventing the water of injection from entering oil reservoir, but producing It can be flowed out through ball-and-seat;Some tubing strings need to suppress releasing packer in job execution, just need to use in tubing string feed pathway Ball-and-seat, tubing string is set to form a closed system during pressurization releasing packer in tubing string;And it is also required to during screw bolt well hot wash The feed liquor on pump, it is also desirable to have ball-and-seat.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of multipurpose ball-and-seat, and the valve is closed in its natural state, And then opened when pipe external pressure is higher than overpressure, thus well liquid can be made to realize one-way flow.
The present invention is achieved through the following technical solutions:A kind of multipurpose ball-and-seat, including upper main body, lower main body, center Pipe, annular piston, spring, sealing ring composition, the side wall of described upper main body are circumferentially with some liquid-through holes, upper main body and lower master Body is threaded in the inner side of main body, annular piston and spring are placed in main body and center to be threadedly coupled beyond central tube It is spring in cavity between pipe, on annular piston, the periphery of annular piston is provided with sealing ring.
Further, described upper main body upper end and the lower end of lower main body are equipped with tubing thread.
Beneficial effects of the present invention:A kind of multipurpose ball-and-seat proposed by the present invention is connected to energy on screw pump pumping pipe string Entering pumping pipe string on pump in the flushing fluid of well-flushing season well head injection, ball-and-seat remains central longitudinal channel, in order to Pumping pipe string and screw pump rotor pass through from central longitudinal channel;Ball-and-seat is used in separate-zone producer, multistage can be used, is started Pressure is adjustable as needed, and the hole of ball-and-seat seals to be hard, impact resistance, long lifespan.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Main body on 1- in figure, main body under 2-, 3- central tubes, 4- annular pistons, 5- springs, 6- sealing rings.
Embodiment
As shown in figure 1, a kind of multipurpose ball-and-seat proposed by the present invention, including upper main body 1, lower main body 2, central tube 3, ring Shape piston 4, spring 5, sealing ring 6 form, and described upper main body 1 is the upper end of ball-and-seat, and lower main body 2 is the lower end of ball-and-seat, The upper upper end of main body 1 and the lower end of lower main body 2 are equipped with tubing thread, and to be connected with tubing string, the side wall of upper main body 1 is circumferentially with some Liquid-through hole, realizes lateral feed liquor, and upper main body 1, to be threadedly coupled, main body 1 is threaded in beyond central tube 3 with lower main body 2 Inner side, annular piston 4 and spring 5 are placed in the cavity between main body 1 and central tube 3, are spring 5 on annular piston 4, annular The periphery of piston 4 is provided with sealing ring 6, and sealing ring 6 is used for the gap between closed ring piston 4 and upper main body 1;In free state Under, annular piston 4 is pressed in the upper end of lower main body 2 in the presence of spring 5, ball-and-seat is in closed state, works as external pressure During more than internal pressure certain value, annular piston 4 is up, connects main body 1 and the liquid-through hole of central tube 3, realizes flushing fluid Enter tubing string, or oil reservoir production fluid enters well.
In actual use, if being used for screw bolt well pumping and washing, then ball-and-seat is connected on the tubing string on pump and gone into the well;If It is to be used for separate-zone producer, then is connected on the position for corresponding to pay interval on Back-off Pipe String or overall tubing string and goes into the well;When in pipe When releasing packer is suppressed in post, annular piston 4 falls in lower main body 2, seals liquid-through hole, tubing string is turned into a closing and is System.When oil well, which is put into, recovers the oil production, because pipe external pressure is higher than overpressure at that time, annular piston 4 is up under the pressure difference, well Liquid just enters from the circumferential inlet opening of upper main body, and the liquid-through hole through central tube 3 is entered in tubing string, by oil pumping pumped.

Claims (2)

1. a kind of multipurpose ball-and-seat, including upper main body (1), lower main body (2), central tube (3), annular piston (4), spring (5), Sealing ring (6) forms, it is characterised in that:The side wall of described upper main body (1) is circumferentially with some liquid-through holes, upper main body (1) with Lower main body (2) is threaded in the inner side of main body (1), annular piston (4) and spring to be threadedly coupled beyond central tube (3) (5) it is placed in the cavity between main body (1) and central tube (3), is spring (5) on annular piston (4), annular piston (4) Periphery is provided with sealing ring (6).
2. multipurpose ball-and-seat according to claim 1, it is characterised in that:Described upper main body (1) upper end and lower main body (2) lower end is equipped with tubing thread.
CN201711040499.9A 2017-10-31 2017-10-31 Multipurpose ball-and-seat Pending CN107829708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711040499.9A CN107829708A (en) 2017-10-31 2017-10-31 Multipurpose ball-and-seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711040499.9A CN107829708A (en) 2017-10-31 2017-10-31 Multipurpose ball-and-seat

Publications (1)

Publication Number Publication Date
CN107829708A true CN107829708A (en) 2018-03-23

Family

ID=61651075

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711040499.9A Pending CN107829708A (en) 2017-10-31 2017-10-31 Multipurpose ball-and-seat

Country Status (1)

Country Link
CN (1) CN107829708A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109209365A (en) * 2018-08-16 2019-01-15 宋协翠 A kind of separate-layer production string underground oil sampling device and application method
CN109209364A (en) * 2018-08-16 2019-01-15 宋协翠 Separate-layer production string underground oil sampling device
CN114427382A (en) * 2020-10-12 2022-05-03 中国石油化工股份有限公司 Downhole tubular oil production pump lower tubular column seating device and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109209365A (en) * 2018-08-16 2019-01-15 宋协翠 A kind of separate-layer production string underground oil sampling device and application method
CN109209364A (en) * 2018-08-16 2019-01-15 宋协翠 Separate-layer production string underground oil sampling device
CN109209364B (en) * 2018-08-16 2022-10-28 宋协翠 Underground oil sampling device for layered oil production pipe column
CN114427382A (en) * 2020-10-12 2022-05-03 中国石油化工股份有限公司 Downhole tubular oil production pump lower tubular column seating device and method

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WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20180323