CN102828731A - Oil field water injection well dual-pressure cavity anti-blowout operation technology - Google Patents
Oil field water injection well dual-pressure cavity anti-blowout operation technology Download PDFInfo
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- CN102828731A CN102828731A CN2012103494875A CN201210349487A CN102828731A CN 102828731 A CN102828731 A CN 102828731A CN 2012103494875 A CN2012103494875 A CN 2012103494875A CN 201210349487 A CN201210349487 A CN 201210349487A CN 102828731 A CN102828731 A CN 102828731A
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Abstract
The invention discloses an oil field water injection well dual-pressure cavity anti-blowout operation technology, belonging to the technical field of oil exploitation. In the technology, a self-sealing anti-well washing anti-blowout device is mounted at the lower end of a water injection pipe column; an upper pressure cavity and a lower pressure cavity are always formed on the water injection pipe column from the self-sealing anti-well washing anti-blowout device; and the up-down movement of the water injection pipe column is determined by the pressure of the liquid in the two pressure cavities. The pressure of the liquid in the lower pressure cavity is determined by the reservoir pressure and changes little simply by changing the pressure of the liquid in the upper pressure cavity. The pressure of the liquid in the upper pressure cavity is changed by injecting water into an oil jacket ring from a wellhead valve or discharging water from the oil jacket ring. Through the invention, by injecting water into an oil jacket ring from a wellhead valve or discharging water from the oil jacket ring, the pressure of the liquid in the upper pressure cavity is changed, thus the water injection pipe column can go down or up; and the technology disclosed by the invention has the advantages of high construction efficiency and the like, and is simple, convenient and safe to operate. The self-sealing anti-well washing anti-blowout device is a key device for implementing the technology; and meanwhile, the device realizes the function of a self-sealing packer, the function of an automatic oil pipe blowout preventer, the function of an anti-well washing valve and the function of a bottom valve.
Description
Technical field
The invention belongs to technical field of petroleum extraction.
Background technology
Along with the prolongation of oil field development time, formation pressure constantly reduces, need be through water injection well to oil-bearing stratum flooding to keep strata pressure.The water injection well construction operation generally is divided into putting presses operation, kill job and three kinds of technologies of preventing spraying operation (Operating Pressure).Put and press operation exactly borehole pressure all to be discharged, exist and put pressure time length, the shipping expense height that discharges water, strata pressure and recover slow, the influence shortcomings such as oil well output of being correlated with; Formation pressure in the highdensity well killing fluid balance water injection well is used in kill job exactly, exists well killing fluid to pollute the stratum, reduce the permeability in space, stratum, influences shortcomings such as later stage flood effectiveness; Preventing spraying operation is exactly in well Operating Pressure under the open flow situation not; It is the method that present oil-field brine well operations is promoted; Its job practices is to adopt preventing spraying operation equipment; Play lower tubular column and block the water injection string outer wall by the traveling slip of preventing spraying operation equipment, stretching through hydraulic cylinder moves up and down tubing string, has low, the dangerous big shortcoming of efficiency of construction.
Summary of the invention
The objective of the invention is: provide a kind of water injection well in oil fields two pressure chamber preventing spraying operation technologies, it can be applicable to the construction of water injection well in oil fields preventing spraying operation, has efficiency of construction height, easy and simple to handle, safety.
Technology of the present invention is:
1, in the water injection string lower end of water injection well in oil fields a self-styled anti-flushing well blowout hookup is installed; Water injection string forms upper and lower two pressure chambers all the time by self-styled anti-flushing well blowout hookup; Oil jacket annular space between the cartridge of self-styled anti-flushing well blowout hookup and preventing spraying operation device forms the upward pressure chamber, and self-styled anti-flushing well blowout hookup and oil reservoir form the downforce chamber.
2, water injection string moves up and down by the decision of two pressure chamber liquid pressure sizes.The liquid pressure size in downforce chamber determines by formation pressure, changes very for a short time, only needs to change a upward pressure chamber liquid pressure and gets final product.
3, the method that changes upward pressure chamber liquid pressure is to the oil jacket annulus water injection or discharge water by head valve.
The technical scheme of the self-styled anti-flushing well blowout hookup in this technology is: central tube is connected to form by the number joint, by being threaded, is provided with several through holes around the upper center tube wall between each joint.The blanking plug seat is established in the upper center tube upper end, and blanking plug is cylindrical, and sealing ring is installed on the blanking plug, and blanking plug is in central tube, and blanking plug and center tube wall are fixed by shear pin.Outside the upper center tube through hole, sliding sleeve is installed, several joint rings are installed between sliding sleeve inwall and the central tube outer wall, the sliding sleeve wall is provided with several through holes, back-moving spring is installed below the sliding sleeve.On the upper center tube wall, establish several self-locking blocks, self-locking block is fixed on the upper center tube tube wall by the self-locking block axle.Outside lower center tube, install several between compression back-moving spring and the single current valve body to cup packer.Ball-and-seat is installed in the lower center tube lower end.Single current valve body and central tube are by being threaded.
The invention has the beneficial effects as follows: if through head valve to the oil jacket annulus water injection or discharge water, change liquid pressure in the upward pressure chamber, just can make the water injection string downlink or uplink, tubing string is descending when water filling, tubing string is up when discharging water.Water filling or the speed that discharges water decision water injection string downlink or uplink speed.Therefore, adopt this invented technology technology to carry out water injection well preventing spraying operation construction, have easy and simple to handle, safety and high efficient construction.Self-styled anti-flushing well blowout hookup is a key device of accomplishing above-mentioned technology, and this device is realized self-packing packer function, automatic oil pipe preventer function, anti-flushing well valve function, bottom valve function simultaneously.
Description of drawings
Fig. 1 is a principle schematic of the present invention;
Fig. 2 is the self-styled anti-flushing well blowout hookup sliding sleeve open mode structure sectional view among the present invention;
Fig. 3 is the self-styled anti-flushing well blowout hookup sliding sleeve closed condition structure sectional view among the present invention.
The specific embodiment
Embodiment 1:
Do below in conjunction with the two pressure chamber technologies of the water injection well in oil fields preventing spraying operation among 1 couple of the present invention of accompanying drawing and to further describe:
As shown in Figure 1, the 1st, preventing spraying operation device cartridge, the 2nd, preventing spraying operation device safety slip, the 3rd, head valve, the 4th, water injection string, the 5th, upper packer, the 6th, injection well downhole flow regulator, the 7th, self-styled anti-flushing well blowout hookup, the 8th, sleeve pipe, the 9th, oil reservoir, the 10th, artificial bottom of a well.
The two pressure chamber technology work progresss of water injection well in oil fields preventing spraying operation among the present invention are pressed water injection string and are described below respectively with a water injection string:
The work progress of following water injection string: at first, by conventional well preventing spraying operation method self-styled anti-flushing well blowout hookup 7 is lowered to water injection well, then; To head valve 3 water fillings, when the oil jacket annular space between the cartridge 1 of self-styled anti-flushing well blowout hookup 7 and preventing spraying operation device formed upward pressure cavity pressure and water injection string 4 weight sums greater than the pressure in self-styled anti-flushing well blowout hookup 7 and oil reservoir formation downforce chamber, water injection string 4 can move down with high-pressure hydraulic pump; When arriving box cupling; Close head valve 3, closed safe slips 2 connects water filling instrument or oil pipe; Open safety slip 2 and head valve 3 again; By head valve 3 upward pressure chamber water fillings, reciprocal according to this, the working design of pressing water injection well is one by one with injection well downhole flow regulator 6, packer 5 and oil pipe G.I.H.After the leather cup of self-styled anti-flushing well blowout hookup 7 is crossed a bottom oil reservoir 9; Two pressure chambers have up and down originally become a pressure chamber; Carry water injection string with the production rig hook, the liquid in self-styled anti-flushing well blowout hookup 7 and the artificial bottom of a well 10 gets into the oil jacket annular space between self-styled anti-flushing well blowout hookup 7 and the well head through self-styled anti-flushing well blowout hookup 7 from rushing down passage, opens head valve 3 and discharges water; The production rig hook is transferred, and arrives the precalculated position.Then, suppress with high-pressure pump water filling in water injection string 4, blanking plug shear pin in the self-styled anti-flushing well blowout hookup 7 is cut off, blanking plug is released blanking plug and is located in into lower center tube, and self-locking block rotates closes sliding sleeve.Make 5 envelopes of water injection packer simultaneously.
Play the work progress of water injection string: after installing well preventing spraying operation device,, make water injection packer 5 deblockings with carrying water injection string 4 on the production rig hook; Open head valve 3 and be full of liquid, close head valve 3, carry water injection string in the continuation until the oil jacket annular space; After the leather cup of self-styled anti-flushing well blowout hookup 7 was carried topmost an oil reservoir 9, forms two pressure chambers up and down by self-styled anti-flushing well blowout hookup 7, the working fluid effect that receives to make progress of the blanking plugs in the self-styled anti-flushing well blowout hookup 7 is pushed back the blanking plug seat; Shutoff in the oil pipe is opened head valve 3 and is discharged water, and upward pressure cavity pressure and water injection string weight sum are during less than the downforce chamber; Water injection string will move up, and closes head valve 3 when arriving box cupling, closes preventing spraying operation device safety card 2; Unload the oil pipe or the instrument that trip out; Open preventing spraying operation device safety slip 2 and head valve 3 again, according to said method move in circles, trip out whole tubing strings and instrument in the water injection well.
Self-styled anti-flushing well blowout hookup as shown in Figures 2 and 3, the 1st, top connection, the 2nd, blanking plug seat, the 3rd, blanking plug, the 4th, sealing ring, the 5th, sealed packing; The 6th, shear pin, the 7th, through hole, the 8th, self-locking block, the 9th, self-locking block axle, the 10th, sealing ring, the 11st, sliding sleeve; The 12nd, through hole, the 13rd, sealing ring, the 14th, upper center tube, the 15th, through hole, the 16th, sealing ring; The 17th, middle central tube, the 18th, back-moving spring, the 19th, lower center tube, the 20th, cup packer, the 21st, ball-and-seat.
Self-styled anti-flushing well blowout hookup before use; Fixing between blanking plug 3 and the upper center tube 14 by shear pin 6; Spacing can not the rotation of self-locking block 8 blocked devices; Sliding sleeve 11 is by the self-locking block 8 spacing open modes that are in, and central tube is inside and outside to be communicated with by through hole 7, and the ball-and-seat lower end is in the unilaterally connected state from the bottom to top.When from top connection when the central tube water filling is suppressed, blanking plug 3 receives the effect of liquid downward force, cuts off shear pin and moves down, moved self-locking block 8 after, self-locking block 8 loses the restriction of blanking plug 3 and rotates, sliding sleeve 11 is closed under action of reset spring, and is as shown in Figure 3.When the 3 lower end fluid pressures of blanking plug in the central tube greater than blanking plug 3 on during end pressure, blanking plug 3 is moving up under end pressure effect down at it, moves to blanking plug seat 2 and the seat envelope.In sliding sleeve 11 closed conditions, central tube 14 external pressures are during greater than inside, and liquid gets into sliding sleeves 11 and central tube 14 annular spaces through through hole 12, promotes sliding sleeve 11 downwards and compression reseting spring 18, open sliding sleeve 11 and make 14 inside and outside connections of central tube.Central tube 14 internal pressures are during greater than the outside, and liquid gets into sliding sleeves 11 and central tube 14 annular spaces through through hole 15, and promote sliding sleeve and move up, after sliding sleeve 11 upper ends and sealed packing 5 compress, central tube and sliding sleeve external seal.Cup packer 20 is an elastic body, and after self-styled anti-flushing well blowout hookup was lowered to sleeve pipe, cup packer was two chambeies up and down with sleeve pipe and the packing of self-styled anti-flushing well blowout hookup annular space all the time.21 of constant pressure check valves allow liquid to be flowed in the central tube by the lower end, and do not allow liquid to be flowed downward by central tube.
Claims (2)
1. two pressure chamber preventing spraying operation technologies of a water injection well in oil fields, its technology is:
A, a self-styled anti-flushing well blowout hookup is installed in the water injection string lower end of water injection well in oil fields; Water injection string forms upper and lower two pressure chambers all the time by self-styled anti-flushing well blowout hookup; Oil jacket annular space between the cartridge of self-styled anti-flushing well blowout hookup and preventing spraying operation device forms the upward pressure chamber, and self-styled anti-flushing well blowout hookup and oil reservoir form the downforce chamber;
B, water injection string move up and down by the decision of two pressure chamber liquid pressure sizes; The liquid pressure size in downforce chamber determines by formation pressure, changes very for a short time, only needs to change a upward pressure chamber liquid pressure and gets final product;
C, the method that changes upward pressure chamber liquid pressure are to the oil jacket annulus water injection or discharge water by head valve.
2. the self-styled anti-flushing well blowout hookup in the two pressure chamber preventing spraying operation technologies of a kind of water injection well in oil fields as claimed in claim 1 is characterized in that: self-styled anti-flushing well blowout hookup central tube is connected to form by the number joint, between each joint by being threaded; Be provided with several through holes around the upper center tube wall, the blanking plug seat is established in the upper center tube upper end, and blanking plug is cylindrical; Sealing ring is installed on the blanking plug, and blanking plug is in central tube, and blanking plug and center tube wall are fixed by shear pin; Outside the upper center tube through hole, sliding sleeve is installed, several joint rings are installed between sliding sleeve inwall and the central tube outer wall, the sliding sleeve wall is provided with several through holes; Back-moving spring is installed below the sliding sleeve, on the upper center tube wall, is established several self-locking blocks, self-locking block is fixed on the upper center tube tube wall by the self-locking block axle; Outside lower center tube; Install severally to cup packer between compression back-moving spring and the single current valve body, ball-and-seat is installed in the lower center tube lower end, single current valve body and central tube are by being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210349487.5A CN102828731B (en) | 2012-09-20 | 2012-09-20 | Oil field water injection well dual-pressure cavity anti-blowout operation technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210349487.5A CN102828731B (en) | 2012-09-20 | 2012-09-20 | Oil field water injection well dual-pressure cavity anti-blowout operation technology |
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| Publication Number | Publication Date |
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| CN102828731A true CN102828731A (en) | 2012-12-19 |
| CN102828731B CN102828731B (en) | 2015-02-04 |
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| CN201210349487.5A Expired - Fee Related CN102828731B (en) | 2012-09-20 | 2012-09-20 | Oil field water injection well dual-pressure cavity anti-blowout operation technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178333A (en) * | 2017-07-25 | 2017-09-19 | 东营市昌瑞石油机械配件有限责任公司 | A kind of polished rod sealer |
| CN107313755A (en) * | 2017-09-03 | 2017-11-03 | 盐城市金巨石油机械制造有限公司 | A kind of injection well downhole flow regulator external seal instrument and its application method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070039759A1 (en) * | 2005-08-22 | 2007-02-22 | Foley Lawrence E Jr | Mud saver valve |
| CN201110163Y (en) * | 2007-07-18 | 2008-09-03 | 唐永强 | Ir-kill-job environment protection operation fluid pressure control uncoupling machine for water injection well |
| CN201358775Y (en) * | 2009-03-13 | 2009-12-09 | 安东石油技术（集团）有限公司 | Controllable liquid-injecting pipe convenient to descending well and lifting |
-
2012
- 2012-09-20 CN CN201210349487.5A patent/CN102828731B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070039759A1 (en) * | 2005-08-22 | 2007-02-22 | Foley Lawrence E Jr | Mud saver valve |
| CN201110163Y (en) * | 2007-07-18 | 2008-09-03 | 唐永强 | Ir-kill-job environment protection operation fluid pressure control uncoupling machine for water injection well |
| CN201358775Y (en) * | 2009-03-13 | 2009-12-09 | 安东石油技术（集团）有限公司 | Controllable liquid-injecting pipe convenient to descending well and lifting |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178333A (en) * | 2017-07-25 | 2017-09-19 | 东营市昌瑞石油机械配件有限责任公司 | A kind of polished rod sealer |
| CN107178333B (en) * | 2017-07-25 | 2023-06-09 | 东营市昌瑞石油机械配件有限责任公司 | Polished rod sealer |
| CN107313755A (en) * | 2017-09-03 | 2017-11-03 | 盐城市金巨石油机械制造有限公司 | A kind of injection well downhole flow regulator external seal instrument and its application method |
| CN107313755B (en) * | 2017-09-03 | 2023-07-21 | 盐城市金巨石油机械制造有限公司 | Water distributor external sealing tool and use method thereof |
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| CN102828731B (en) | 2015-02-04 |
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