CN204252882U - A kind of Junk prevention pressure transmission ball seat - Google Patents

A kind of Junk prevention pressure transmission ball seat Download PDF

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Publication number
CN204252882U
CN204252882U CN201420635491.2U CN201420635491U CN204252882U CN 204252882 U CN204252882 U CN 204252882U CN 201420635491 U CN201420635491 U CN 201420635491U CN 204252882 U CN204252882 U CN 204252882U
Authority
CN
China
Prior art keywords
ball seat
pressure transmission
screen casing
mozzle
ring
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.)
Withdrawn - After Issue
Application number
CN201420635491.2U
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Chinese (zh)
Inventor
王丽莉
张晓文
麻德玉
张静波
欧阳涛
华晋伟
韩军
马启军
董丽娜
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.)
Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas Co Ltd
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 China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN201420635491.2U priority Critical patent/CN204252882U/en
Application granted granted Critical
Publication of CN204252882U publication Critical patent/CN204252882U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a kind of Junk prevention pressure transmission ball seat, comprise: outer tubing string, comprise the outer tube, connection ring body and the flow tube that connect successively, the outside of described flow tube is arranged with screen casing, ring cavity is formed between described screen casing and described flow tube, its front end is tightly connected with the described ring body that is connected, and seals mutually between its rear end with described flow tube; One-way flow guide device, described one-way flow guide device is arranged in described outer tubing string, pressure transmission passage is formed between its lateral surface and described outer tubing string, the inner chamber of described one-way flow guide device is connected by a mozzle with described ring cavity, be not communicated with between mozzle with described pressure transmission passage, when liquid enters described one-way flow guide device through described ring cavity, mozzle, the inner chamber of one-way flow guide device can be in conducting state, and correspondence is connected with described pressure transmission passage.The utility model by the Impurity deposition inside liquid to down-hole, can be avoided the water nozzle blocking the pump in oil well or the injection well downhole flow regulator in water injection well, guarantees normal oil recovery, backwash operation.

Description

A kind of Junk prevention pressure transmission ball seat
Technical field
The utility model belongs to field of petroleum exploitation, relates to a kind of Junk prevention pressure transmission ball seat, in oil recovery, water blockoff, water injection technology, can meet the requirement such as oil pipe feed liquor and pressure transmission, anti-flushing well.
Background technology
When the oil recovery of oil well and water injection well and anti-flushing well; often can use conventional side direction ball-and-seat or ball valve; but; in recovery process; owing to there is sand production or the dirty situation of well; can cause in liquid stream containing impurity; impurity is wherein caused easily will singly to stay valve to block; the conventional side direction ball-and-seat simultaneously at present used in oil well and water injection well or ball seat; the ball seat of many existence and the poorly sealed problem of ball; when can cause setting, tubing string does not play pressure or cause cannot the problem of seperated layer water injection, and then impact is produced, and adds cost of production.
In view of this, the design people, according to the Production design experience being engaged in this area and association area for many years, develops a kind Junk prevention pressure transmission ball seat, to solving prior art Problems existing.
Utility model content
The purpose of this utility model is to provide a kind of Junk prevention pressure transmission ball seat, by the Impurity deposition inside liquid to down-hole, can avoid the water nozzle blocking the pump in oil well or the injection well downhole flow regulator in water injection well, thus realize normal oil recovery, backwash operation.
For this reason, the utility model proposes a kind of Junk prevention pressure transmission ball seat, it comprises:
Outer tubing string, comprise the outer tube, connection ring body and the flow tube that connect successively, the outside of described flow tube is arranged with a screen casing, is formed with a ring cavity between described screen casing and described flow tube, its front end is tightly connected with the described ring body that is connected, and seals mutually between its rear end with described flow tube;
One-way flow guide device, described one-way flow guide device is arranged in described outer tubing string, pressure transmission passage is formed between its lateral surface and described outer tubing string, the inner chamber of described one-way flow guide device is connected by a mozzle with described ring cavity, be not communicated with between described mozzle with described pressure transmission passage, when liquid enters described one-way flow guide device through described ring cavity, mozzle, the inner chamber of described one-way flow guide device can be in conducting state, and correspondence is connected with described pressure transmission passage.
Junk prevention pressure transmission ball seat as above, wherein, described one-way flow guide device comprises screen casing in, a ball seat and an elasticity closeouts, the front end of described interior screen casing is connected with fair water cone, and its rear end is connected by the front end of internal thread with described ball seat, and described ball seat in a tubular form, its rear end is provided with plug, described elasticity closeouts is positioned at described screen casing, and its one end is connected to the end face of described fair water cone, and its other end is then plugged in the port of described ball seat front end;
Wherein, described ball seat is connected with described flow tube by described mozzle, its sidewall is provided with an inflow hole, described flow tube offers a fluid hole corresponding with described inflow hole, the two ends correspondence of described mozzle is communicated with described fluid hole and described inflow hole, and the inner chamber of described ball seat is connected with described ring cavity by described inflow hole, mozzle and fluid hole.
Junk prevention pressure transmission ball seat as above, wherein, described elasticity closeouts includes an elastic component and a ball sealer, and described ball sealer correspondence is plugged in the port of described ball seat front end, one end of described elastic component and the end face of described fair water cone abut against, and its other end is resisted against described ball sealer.
Junk prevention pressure transmission ball seat as above, wherein, separately be provided with a sand retention pipe, described sand retention pipe is set in the outside of described interior screen casing and ball seat, its front end and described interior screen casing are tightly connected, and are separated with distance between the lateral surface of its rear end and described ball seat, and are formed with a ring opening, annular space is formed with, described annular space and ring opening in communication between described sand retention pipe and described interior screen casing.
Junk prevention pressure transmission ball seat as above, wherein, described interior screen casing is inclined hole screen casing, and its sieve aperture is obliquely installed towards the direction of described ring opening from the inside to the outside.
Junk prevention pressure transmission ball seat as above, wherein, sheathedly on described flow tube be fixed with a baffle ring, the rear end of described screen casing and the lateral surface of described baffle ring are tightly connected.
Junk prevention pressure transmission ball seat as above, wherein, the free end of described outer tube is connected with a top connection, and the free end of described flow tube is then provided with a lower contact.
Junk prevention pressure transmission ball seat of the present utility model, when producing well normally recovers the oil or water injection well anti-flushing well time, liquid enters ring cavity by down-hole annular through the sieve aperture of described screen casing sidewall, flow to through mozzle again in the inner chamber of described ball seat, under the effect of hydraulic coupling, promote ball sealer and compression elastic piece, the port of ball seat front end is made to be in open mode, and be connected with described interior screen casing, then be connected with described pressure transmission passage, thus the inner chamber realizing described one-way flow guide device is in conducting state, like this, liquid can flow out in described pressure transmission passage by down-hole annular, and liquid is under the stop of sand retention pipe, speed can reduce and conversion direction, impurity inside such liquid under gravity, sink in tail pipe along described pressure transmission passage is slowly descending, liquid is then because pressure effect continues up, impurity is prevented to block the water nozzle of the pump in oil well or the injection well downhole flow regulator in water injection well, thus realize normal oil recovery, backwash operation.
Junk prevention pressure transmission ball seat of the present utility model, wide accommodation, not only adapts to the mining requirement of water injection well especially high angle hole dispensing, also can be applicable to the exploitation of oil well.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the composition structural representation of Junk prevention pressure transmission ball seat of the present utility model.
Critical element label declaration:
1 outer tubing string 11 outer tube
12 connect ring body 13 flow tube
131 fluid hole 132 baffle rings
14 screen casing 15 mozzles
16 top connection 17 lower contacts
Screen casing in 2 one-way flow guide devices 21
22 ball seat 221 inflow hole
23 elasticity closeouts 231 elastic components
232 ball sealer 24 fair water cones
25 plug 26 sand retention pipes
261 ring opening H1 ring cavities
H2 pressure transmission passage H3 annular space
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, below in conjunction with accompanying drawing and preferred embodiment, to the detailed description of the invention of the Junk prevention pressure transmission ball seat that the utility model proposes, structure, feature and effect, be described in detail as follows.In addition, by the explanation of detailed description of the invention, when can to the utility model for the technological means reaching predetermined object and take and effect are goed deep into concrete understanding more, but institute's accompanying drawing be only to provide with reference to and use is described, is not used for being limited the utility model.
Fig. 1 is the composition structural representation of Junk prevention pressure transmission ball seat of the present utility model.
As shown in Figure 1, the Junk prevention pressure transmission ball seat that the utility model proposes, comprise outer tubing string 1 and one-way flow guide device 2, wherein, described outer tubing string 1 comprises the outer tube 11, connection ring body 12 and the flow tube 13 that connect successively, and the outside of described flow tube 13 is arranged with a screen casing 14, is formed with a ring cavity H1 between described screen casing 14 and described flow tube 13, its front end is tightly connected with the described ring body 12 that is connected, and seals mutually between its rear end with described flow tube 13.
Described one-way flow guide device 2 is arranged in described outer tubing string 1, pressure transmission passage H2 is formed between its lateral surface and described outer tubing string 1, the inner chamber of described one-way flow guide device 2 is connected by a mozzle 15 with described ring cavity, be not communicated with between described mozzle 15 with described pressure transmission passage H2, when liquid enters described one-way flow guide device 2 through described ring cavity H1, mozzle 15, the inner chamber of described one-way flow guide device 2 can be in conducting state, and correspondence is connected with described pressure transmission passage H2.
The Junk prevention pressure transmission ball seat that the utility model proposes, the bottom of packer is connected to during use, and at its lower end union tail, enter in producing well down in the lump, when packer setting, its pressure (hydraulic coupling) is passed to down-hole by described pressure transmission passage H2, now, described one-way flow guide device 2 is in closed condition, does not affect normal use;
When producing well normally recovers the oil or water injection well anti-flushing well time, liquid (as water) by down-hole annular through as described in the sieve aperture of screen casing 14 sidewall enter ring cavity H1, flow in described one-way flow guide device 2 through mozzle 15 again, its inner chamber is made to be in conducting state, like this, liquid can flow out in described pressure transmission passage H2 by described one-way flow guide device 2, impurity inside liquid is due to Action of Gravity Field, slowly descending along described pressure transmission passage H2, and sink in tail pipe, liquid due to pressure effect continue up, prevent the water nozzle of the pump in the impurity blocking oil well contained in liquid or the injection well downhole flow regulator in water injection well, thus realize normal oil recovery or backwash operation.
Preferably, described one-way flow guide device 2 comprises screen casing 21, ball seat 22 and an elasticity closeouts 23 in one, the front end of described interior screen casing 21 is connected with fair water cone 24, its rear end is connected by the front end of internal thread with described ball seat 22, in a tubular form, its rear end is provided with plug 25 to described ball seat 22, and described elasticity closeouts 23 is positioned at described screen casing 21, its one end is connected to the end face of described fair water cone 24, and its other end is then plugged in the port of described ball seat 22 front end;
Wherein, described ball seat 22 is connected with described flow tube 13 by described mozzle 15, its sidewall is provided with an inflow hole 221, described flow tube 13 offers a fluid hole 131 corresponding with described inflow hole 221, the two ends correspondence of described mozzle 15 is communicated with described fluid hole 131 and described inflow hole 221, and the inner chamber of described ball seat 22 is connected with described ring cavity H1 by described inflow hole 221, mozzle 15 and fluid hole 131.When practicing, the two ends of preferred mozzle 15 and flow tube and ball seat are welded and fixed, better to seal the outer peripheral edge of fluid hole 131, inflow hole 221.
Thus, when liquid enters ring cavity H1 via down-hole annular through the sieve aperture of described screen casing 14 sidewall, again when mozzle 15 flow to the inner chamber of the ball seat 22 of described one-way flow guide device 2, under the effect of hydraulic coupling, can promote and elasticity of compression closeouts 23, make the port of ball seat 22 front end be in open mode, and be connected with described interior screen casing 21, corresponding and described pressure transmission passage H2 is connected, thus the inner chamber realizing described one-way flow guide device 2 is in conducting state.
Wherein, described elasticity closeouts 23 includes elastic component 231 and a ball sealer 232, described ball sealer 232 correspondence is plugged in the port of described ball seat 22 front end, one end of described elastic component 231 and the end face of described fair water cone 24 abut against, its other end is resisted against described ball sealer 232, and this ball sealer is preferably stainless steel ball.
In order to when normal oil recovery or water injection well anti-flushing well time, improve the effect of settling of impurity, separately be provided with a sand retention pipe 26, described sand retention pipe 26 is set in the outside of described interior screen casing 21 and ball seat 22, its front end and described interior screen casing 21 are tightly connected, and are separated with distance between the lateral surface of its rear end and described ball seat 22, and are formed with a ring opening 261, be formed with annular space H3 between described sand retention pipe 26 and described interior screen casing 21, described annular space H3 is connected with ring opening 261.When liquid flows out through interior screen casing 21, by arranging sand retention pipe, due to the barrier effect of described sand retention pipe 26, flow stream velocity can reduce and conversion direction, impurity inside such liquid more easily under gravity, sinks in tail pipe along described pressure transmission passage H2 is slowly descending.
Further, sheathedly on described flow tube 13 be fixed with a baffle ring 132, the rear end of described screen casing 14 and the lateral surface of described baffle ring 132 are tightly connected, thus realize the sealing between described flow tube.In addition, for ease of being connected with other parts such as packer, tail pipe, the free end of preferred described outer tube 11 is connected with a top connection 16, and the free end of described flow tube 13 is then provided with a lower contact 17.
In addition, when real work, preferred described interior screen casing 21 is inclined hole screen casing, its sieve aperture is obliquely installed towards the direction of described ring opening from the inside to the outside, that is, its sieve aperture is inclined to set towards the other end of described interior screen casing, and the outside port of the sieve aperture of described inclined hole screen casing is near described interior screen casing 21 front end, and inside it mouth near described interior screen casing 21 rear end, to be more conducive to liquid flow.
The Junk prevention pressure transmission ball seat that the utility model proposes, be connected to the bottom of packer by top connection 16 during use, and at its lower contact 17 union tail, enter in producing well down in the lump, when packer setting, the pressure (hydraulic coupling) in its inner chamber is passed to down-hole by described pressure transmission passage H2, now, described one-way flow guide device 2 is in closed condition, does not affect normal use;
When producing well normally recovers the oil or water injection well anti-flushing well time, liquid (as water) by down-hole annular through as described in the sieve aperture of screen casing 14 sidewall enter ring cavity H1, flow to through mozzle 15 again in the inner chamber of described ball seat 22, under the effect of hydraulic coupling, promote ball sealer 232 and compression elastic piece 231, the port of ball seat 22 front end is made to be in open mode, and be connected with described interior screen casing 21, then be connected with described pressure transmission passage H2, thus the inner chamber realizing described one-way flow guide device 2 is in conducting state, like this, liquid can by described ball seat 22, interior screen casing 21, annular space H3 and opening portion 261 flow out in described pressure transmission passage H2, make liquid under the stop of sand retention pipe 26, speed can reduce and conversion direction, impurity inside such liquid under gravity, sink in tail pipe along described pressure transmission passage H2 is slowly descending, liquid after Impurity deposition due to pressure effect continue up, impurity is prevented to block the water nozzle of the pump in oil well or the injection well downhole flow regulator in water injection well, thus realize normal oil recovery or backwash operation.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.

Claims (8)

1. a Junk prevention pressure transmission ball seat, is characterized in that, described Junk prevention ball seat comprises:
Outer tubing string, comprise the outer tube, connection ring body and the flow tube that connect successively, the outside of described flow tube is arranged with a screen casing, is formed with a ring cavity between described screen casing and described flow tube, its front end is tightly connected with the described ring body that is connected, and seals mutually between its rear end with described flow tube;
One-way flow guide device, described one-way flow guide device is arranged in described outer tubing string, pressure transmission passage is formed between its lateral surface and described outer tubing string, the inner chamber of described one-way flow guide device is connected by a mozzle with described ring cavity, be not communicated with between described mozzle with described pressure transmission passage, when liquid enters described one-way flow guide device through described ring cavity, mozzle, the inner chamber of described one-way flow guide device can be in conducting state, and correspondence is connected with described pressure transmission passage.
2. Junk prevention pressure transmission ball seat as claimed in claim 1, it is characterized in that, described one-way flow guide device comprises screen casing in, a ball seat and an elasticity closeouts, the front end of described interior screen casing is connected with fair water cone, and its rear end is connected by the front end of internal thread with described ball seat, and described ball seat in a tubular form, its rear end is provided with plug, described elasticity closeouts is positioned at described screen casing, and its one end is connected to the end face of described fair water cone, and its other end is then plugged in the port of described ball seat front end;
Wherein, described ball seat is connected with described flow tube by described mozzle, its sidewall is provided with an inflow hole, described flow tube offers a fluid hole corresponding with described inflow hole, the two ends correspondence of described mozzle is communicated with described fluid hole and described inflow hole, and the inner chamber of described ball seat is connected with described ring cavity by described inflow hole, mozzle and fluid hole.
3. Junk prevention pressure transmission ball seat as claimed in claim 2, it is characterized in that, described elasticity closeouts includes an elastic component and a ball sealer, described ball sealer correspondence is plugged in the port of described ball seat front end, one end of described elastic component and the end face of described fair water cone abut against, and its other end is resisted against described ball sealer.
4. Junk prevention pressure transmission ball seat as claimed in claim 2 or claim 3, it is characterized in that, separately be provided with a sand retention pipe, described sand retention pipe is set in the outside of described interior screen casing and ball seat, its front end and described interior screen casing are tightly connected, and are separated with distance between the lateral surface of its rear end and described ball seat, and are formed with a ring opening, annular space is formed with, described annular space and ring opening in communication between described sand retention pipe and described interior screen casing.
5. Junk prevention pressure transmission ball seat as claimed in claim 4, it is characterized in that, described interior screen casing is inclined hole screen casing, and its sieve aperture is obliquely installed towards the direction of described ring opening from the inside to the outside.
6. the Junk prevention pressure transmission ball seat as described in claim 1 or 5, is characterized in that, sheathedly on described flow tube is fixed with a baffle ring, and the rear end of described screen casing and the lateral surface of described baffle ring are tightly connected.
7. Junk prevention pressure transmission ball seat as claimed in claim 6, it is characterized in that, the free end of described outer tube is connected with a top connection, and the free end of described flow tube is then provided with a lower contact.
8. Junk prevention pressure transmission ball seat as claimed in claim 1, it is characterized in that, the free end of described outer tube is connected with a top connection, and the free end of described flow tube is then provided with a lower contact.
CN201420635491.2U 2014-10-29 2014-10-29 A kind of Junk prevention pressure transmission ball seat Withdrawn - After Issue CN204252882U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420635491.2U CN204252882U (en) 2014-10-29 2014-10-29 A kind of Junk prevention pressure transmission ball seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420635491.2U CN204252882U (en) 2014-10-29 2014-10-29 A kind of Junk prevention pressure transmission ball seat

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CN204252882U true CN204252882U (en) 2015-04-08

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CN201420635491.2U Withdrawn - After Issue CN204252882U (en) 2014-10-29 2014-10-29 A kind of Junk prevention pressure transmission ball seat

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104373063A (en) * 2014-10-29 2015-02-25 中国石油天然气股份有限公司 Anti-falling pressure transmission ball seat
CN108240200A (en) * 2016-12-27 2018-07-03 中国石油天然气股份有限公司 Oil pumping method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104373063A (en) * 2014-10-29 2015-02-25 中国石油天然气股份有限公司 Anti-falling pressure transmission ball seat
CN104373063B (en) * 2014-10-29 2017-03-08 中国石油天然气股份有限公司 A kind of Junk prevention pressure transmission ball seat
CN108240200A (en) * 2016-12-27 2018-07-03 中国石油天然气股份有限公司 Oil pumping method
CN108240200B (en) * 2016-12-27 2020-06-09 中国石油天然气股份有限公司 Oil pumping method

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C14 Grant of patent or utility model
AV01 Patent right actively abandoned

Granted publication date: 20150408

Effective date of abandoning: 20171114

AV01 Patent right actively abandoned