CN105201454B - Anti-spraying multifunctional tail pipe for water injection well - Google Patents
Anti-spraying multifunctional tail pipe for water injection well Download PDFInfo
- Publication number
- CN105201454B CN105201454B CN201510549979.2A CN201510549979A CN105201454B CN 105201454 B CN105201454 B CN 105201454B CN 201510549979 A CN201510549979 A CN 201510549979A CN 105201454 B CN105201454 B CN 105201454B
- Authority
- CN
- China
- Prior art keywords
- injection well
- top connection
- water injection
- telescopic
- way valve
- 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.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 title claims abstract description 30
- 239000007924 injection Substances 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000005507 spraying Methods 0.000 title 1
- 230000007306 turnover Effects 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000011010 flushing procedure Methods 0.000 description 6
- 210000002445 nipple Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
- Revetment (AREA)
Abstract
The invention relates to a jet-proof multifunctional tail pipe for a water injection well. The problem of current water injection well area pressure operation used preset working barrel shutoff performance unreliable, water injection well operation overflow easily arrange outside and pollute the environment is mainly solved. The method is characterized in that: the inner part of the upper joint (1) is connected with a plugging ball seat (3), the bottom of the upper joint (1) is connected with a jacket (5), and a piston (4) is arranged among the upper joint (1), the jacket (5) and the plugging ball seat (3); a telescopic sleeve (10) is arranged in the outer sleeve (5), a sliding sleeve (12) is connected to the outer portion of the telescopic sleeve (10), the lower portion of the telescopic sleeve (10) is connected with an upper connector (14) of the two-way valve, and a spring (13) is arranged between the sliding sleeve (12) and the upper connector (14) of the two-way valve. The multifunctional blowout prevention tail pipe for the water injection well can be applied to operation under pressure and conventional operation, the bottom of the injection well is blocked, the internal overflow of the oil pipe in the process of lifting the pipe column in the operation of the injection well can be reduced, and environment-friendly construction is realized.
Description
Technical field
The present invention relates to oilfield, specifically a kind of multi-functional tail pipe of water injection well jet proof type.
Background technology
Separated-zone water infection oil field well casing column bottom is mostly using blocking, and routinely blocking, it is close under normal production status to be only capable of realizing
Envelope and anti-flushing well open function, overflow is larger during operation plays lower tubular column and can not obstruct for injection well, pollutes ground environment.
There is a kind of preset seating nipple of water injection well Operating Pressure on oil field at present, with tubing string tripping in two-way valve top during operation, then
During subjob blanking plug seal operation bucket, the purpose of not overflow when having reached tubing string, but this seating nipple are delivered in well head
Problems be present：First, liquid below afterbody bias is static, the blanking plug of delivery can not smoothly reach preset
Seating nipple precalculated position plugging tubing string；If second, there is the card phenomenon that is hampered in water injection well, or cover damage seriously, the blanking plug of delivery
Preset seating nipple position plugging tubing string can not smoothly be reached.Therefore such instrument sealing characteristics is unreliable, it is impossible to is fully solved
The problem of easily pollution environment is arranged outside the overflow of water filling well operations.
The content of the invention
In order to overcome, the preset seating nipple sealing characteristics of existing water injection well Operating Pressure is unreliable, water filling well operations overflow
Arrange outside stream is easy and pollute the deficiency of environment, the present invention provides a kind of multi-functional tail pipe of water injection well jet proof type, the water injection well jet proof type
Multi-functional tail pipe can be applied in Operating Pressure and routine work, realize injection bottom closure, it is possible to reduce injection well is made
Industry plays oil pipe internal overflow during lower tubular column, realizes environmental protection construction.
The technical scheme is that：A kind of multi-functional tail pipe of water injection well jet proof type, including top connection, in the top connection
Portion is connected with closure ball seat, and the conical surface is provided with inside closure ball seat, and the conical surface matches with ball sealer A, the connection of closure ball seat bottom
There is closure turnover panel；The top connection bottom is connected with overcoat, and piston, piston bottom are provided between top connection, overcoat and closure ball seat
Boss is provided with the outside of portion, jacket internal is equipped with telescopic, and telescopic internal whorl is connected with support bar, and support bar top is stretched
Support base is fixed with set inwall, and support base is positioned at closure turnover panel bottom；Liquid pass hole is provided with the middle part of the telescopic, and crosses liquid
Outside at hole is connected with sliding sleeve by pin, the connection two-way valve top connection of telescopic bottom, sliding sleeve and two-way valve top connection it
Between be provided with spring；The two-way valve top connection bottom inside is engaged by the conical surface with ball sealer B, and two-way valve top connection bottom connects
Lower contact is connected to, turnover panel is connected with the inside of lower contact.
The present invention has the advantages that：The multi-functional tail pipe of water injection well jet proof type is due to using the reserved closure work in underground
Skill, closure function and the injection of normal tubing string and well-flushing function during going into the well can be achieved；Tagged during operation, you can release
Ball sealer A is put, realizes that tubing string bottom blocks, blocking tube column bottom high pressure liquid stream enters in tubing string, by sleeve pipe by wellhead casing pipe
Gate reclaims.So there is the multi-functional tail pipe of water injection well jet proof type operation to act tubing string closure function, operation decentralization tubing string envelope
Anti-flushing well function in plugging function and normal injection production, prevents from arranging outside the liquid stream in operation process in tubing string, realizes green ring
Protect job execution.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
1- top connections in figure, 2- jump rings, 3- closure tee apparatus, 4- pistons, 5- overcoats, 6- closure turnover panels, 7- ball sealers
A, 8- support base, 9- support bars, 10- telescopics, 11- pins, 12- sliding sleeve 13- springs, 14- two-way valve top connections, 15- sealings
Ball B, 16- turnover panel, 17- lower contacts.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of multi-functional tail pipe of water injection well jet proof type, including top connection 1, the inside of top connection 1 connect
There is closure ball seat 3, the inner side of closure ball seat 3 bottom is provided with circular conical surface, ball sealer, and circular conical surface are provided with circular conical surface lower openings
Matched with ball sealer A7, closure ball seat 3 bottom is connected with closure turnover panel 6, ball sealer A7 in the presence of the external force can on move down
It is dynamic, promote closure turnover panel 6 to overturn, ball sealer A7 is fallen into closure ball seat 3, form check valve.The check valve, which has in pipe, to be sealed
The effect of stifled and aerial drainage.During lift pipe string, if hydraulic pressure is high below tubing string, ball sealer A7 is adjacent to the epicone of closure ball seat 3
Face, play closure blowout prevention effect；When hydraulic pressure is low, ball sealer A7 is fallen on closure turnover panel 6, plays aerial drainage effect.Connect on described
First 1 bottom is connected with overcoat 5, and piston 4, the inner surface of piston 4 and ball sealer are provided between top connection 1, overcoat 5 and closure ball seat 3
The contact of 3 outer surfaces of seat, is connected between the top of piston 4 and top connection 1 by jump ring 2, and boss is provided with the middle part of the outer surface of piston 4, convex
Fixed between platform outer surface and overcoat by pin.
Telescopic 10 is equipped with inside overcoat 5, the top of telescopic 10 is holding card mechanism, i.e. the outer surface of cupular part periphery of telescopic 10
There is projection, and raised bottom surface is inclined-plane above, is provided with the groove being engaged with above-mentioned projection on the inwall of overcoat 5, makes to face directly
When telescopic 10 slides so far position, projection may be stuck in groove.The internal whorl of telescopic 10 is connected with support bar 9, support bar 9
Support base 8 is fixed with the inwall of telescopic 10 on top, and support base 8 is positioned at closure turnover panel 6 bottom；Above-mentioned support bar 9
Through hole is provided with the axial direction on support seat 8.Liquid pass hole, and the outside at liquid pass hole are provided with the middle part of sliding channel of telescopic 10
Sliding sleeve 12, the bottom of telescopic 10 connection two-way valve top connection 14, sliding sleeve 12 and two-way valve top connection 14 are connected with by pin 11
Between be provided with spring 13.The bottom inside of two-way valve top connection 14 is provided with the conical surface, and the conical surface is engaged with ball sealer B15, double
Lower contact 17 is connected with to the bottom of valve top connection 14, the inner side of lower contact 17 is connected with turnover panel 16.
The seating nipple is installed on injection well tubing string bottom, effects of the ball sealer B15 in turnover panel 16 during tubing string is gone into the well
Under be close to two-way valve top connection 14, channel enclosed is prevented in tubing string decentralization process feed liquor inside tubing string, stretched by ball sealer B15
The holding card mechanism for covering 10 upper ends plays less than one well protection tubing string, and during going into the well, the projection of telescopic 10 is stuck in outside
In the groove for covering 5 inwalls, left side and upside are by the defined position of piston 4, therefore, telescopic 10 axial direction, radial direction during going into the well
It is immovable；Liquid stream is injected in ground to tubing string inside after tubing string tripping in, and ball sealer B15 is stirred under action of hydraulic force
Plate 16, drop into the valve seat of lower contact 17, realize and closed under injection state；Now ground continues to inject liquid to tubing string inside
Stream, while packer setting, piston 4 moves up, and by the monodirectional locking of jump ring 2 in top connection 1, is slided to telescopic 10 pre-
Spacing.Ball sealer B15 is promoted by upward liquid stream during anti-flushing well, but realizes anti-flushing well function by the barrier of turnover panel 16；Block turnover panel
6th, support base 8, have liquid pass hole on support bar 9, do not influence water injection well normally production and anti-flushing well.
Again during operation, first overall tubing string is tagged, after tubing string contacts shaft bottom, overcoat 5 touches sliding sleeve 12 and cut
Pin 11, together compression spring 13, two-way valve top connection 14, telescopic 10 drive support bar 9, support base 8, ball sealer A7 relative
Tubing string moves upwards, the stifled turnover panel 6 in top Kaifeng, ball sealer A7 is headed into the closure device of ball seat 3.After artificial bottom of a well has been visited, pipe
Carried on post, spring 13 recovers normal condition, promotes two-way valve top connection 14, telescopic 10, support bar 9, support base 8 to transport downwards
It is dynamic, while sliding sleeve 12 is opened on top to spring 13 upwards, and the hole on telescopic 10 is exposed, connects oil jacket.
When now playing out tubing string, telescopic 10 is hung on overcoat 5, cannot come off, and ball sealer A7 forms list with closure ball seat 3
To valve, when bottom pressure is larger, ball sealer A7 is fitted in closure ball seat 3 top, stops tubing string inner high voltage overflow, overflow is by covering
Pipe reclaims through wellhead casing pipe gate；When oily overpressure is more than tubing string base pressure, fallen under ball sealer A7 under ball sealer seat 3
Portion, liquid likewise enters sleeve pipe and reclaimed via wellhead casing pipe gate in tubing string, realizes injection bottom closure function, reduces injection
Well operations play oil pipe internal overflow during lower tubular column, ensure environmental protection construction.
Claims (2)
1. a kind of multi-functional tail pipe of water injection well jet proof type, including top connection（1）, it is characterised in that：The top connection（1）Inside connects
It is connected to closure ball seat（3）, block ball seat（3）Inside is provided with the conical surface, and the conical surface and ball sealer A（7）Match, block ball seat（3）
Bottom is connected with closure turnover panel（6）；The top connection（1）Bottom is connected with overcoat（5）, top connection（1）, overcoat（5）With closure
Ball seat（3）Between be provided with piston（4）, piston（4）Bottom outside is provided with boss, overcoat（5）Inside is equipped with telescopic（10）, stretch
Set（10）Internal whorl is connected with support bar（9）, support bar（9）The telescopic on top（10）Support base is fixed with inwall（8）,
And support base（8）Positioned at closure turnover panel（6）Bottom；The telescopic（10）Middle part is provided with liquid pass hole, and the outside at liquid pass hole
Pass through pin（11）It is connected with sliding sleeve（12）, telescopic（10）Bottom connects two-way valve top connection（14）, sliding sleeve（12）With it is two-way
Valve top connection（14）Between be provided with spring（13）；The two-way valve top connection（14）Bottom inside passes through the conical surface and ball sealer B
（15）It is engaged, two-way valve top connection（14）Bottom is connected with lower contact（17）, lower contact（17）Inner side is connected with turnover panel（16）.
2. the multi-functional tail pipe of water injection well jet proof type according to claim 1, it is characterised in that：Described telescopic（10）Top
Portion's outer surface periphery has a projection, and raised bottom surface is faces directly, is inclined-plane above, the overcoat（5）Be provided with inwall with it is above-mentioned
The groove that projection is engaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510549979.2A CN105201454B (en) | 2015-09-01 | 2015-09-01 | Anti-spraying multifunctional tail pipe for water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510549979.2A CN105201454B (en) | 2015-09-01 | 2015-09-01 | Anti-spraying multifunctional tail pipe for water injection well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105201454A CN105201454A (en) | 2015-12-30 |
| CN105201454B true CN105201454B (en) | 2017-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510549979.2A Expired - Fee Related CN105201454B (en) | 2015-09-01 | 2015-09-01 | Anti-spraying multifunctional tail pipe for water injection well |
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| Country | Link |
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| CN (1) | CN105201454B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604520A (en) * | 2016-01-31 | 2016-05-25 | 梁伟成 | Packer with function of pressure relief protection |
| CN105781508A (en) * | 2016-05-01 | 2016-07-20 | 中国石油化工股份有限公司 | Constant-pressure throttling device for small-diameter water injection well |
| CN106522900B (en) * | 2016-12-09 | 2019-01-22 | 中国石油天然气股份有限公司 | Bidirectional blowout prevention ball seat for well shaft fluid control |
| CN107461174B (en) * | 2017-09-26 | 2023-07-21 | 西南石油大学 | Underground safety valve |
| CN107842336B (en) * | 2017-11-28 | 2023-12-22 | 大庆元山油田技术服务有限公司 | Lifting type oil pipe channel blowout preventer |
| CN111075373B (en) * | 2018-10-22 | 2023-08-04 | 中国石油化工股份有限公司 | Continuous sand flushing well-flushing tool and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5472054A (en) * | 1995-02-09 | 1995-12-05 | Hinds; Arron C. | Free pumping apparatus safety valve system and method |
| CN2554344Y (en) * | 2002-06-12 | 2003-06-04 | 辽河石油勘探局兴隆台工程技术处 | Reversable pressure stop ball seat |
| CN201024982Y (en) * | 2007-04-28 | 2008-02-20 | 中国石油天然气股份有限公司 | Cement squeezing control tool |
| CN201024988Y (en) * | 2007-02-09 | 2008-02-20 | 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 | An overflow leakage flowing ball base |
| RU2391592C1 (en) * | 2008-12-30 | 2010-06-10 | Владимир Александрович Чигряй | Check valve |
| CN102561994A (en) * | 2012-02-28 | 2012-07-11 | 盐城彩阳电器阀门有限公司 | Completion reoperation blowout control tail tube valve |
| RU2467158C1 (en) * | 2011-05-04 | 2012-11-20 | Открытое Акционерное Общество "Тяжпрессмаш" | Check valve for casing string |
| CN204457571U (en) * | 2015-01-08 | 2015-07-08 | 中国石油天然气股份有限公司 | Bumping pump type blowout prevention device |
-
2015
- 2015-09-01 CN CN201510549979.2A patent/CN105201454B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5472054A (en) * | 1995-02-09 | 1995-12-05 | Hinds; Arron C. | Free pumping apparatus safety valve system and method |
| CN2554344Y (en) * | 2002-06-12 | 2003-06-04 | 辽河石油勘探局兴隆台工程技术处 | Reversable pressure stop ball seat |
| CN201024988Y (en) * | 2007-02-09 | 2008-02-20 | 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 | An overflow leakage flowing ball base |
| CN201024982Y (en) * | 2007-04-28 | 2008-02-20 | 中国石油天然气股份有限公司 | Cement squeezing control tool |
| RU2391592C1 (en) * | 2008-12-30 | 2010-06-10 | Владимир Александрович Чигряй | Check valve |
| RU2467158C1 (en) * | 2011-05-04 | 2012-11-20 | Открытое Акционерное Общество "Тяжпрессмаш" | Check valve for casing string |
| CN102561994A (en) * | 2012-02-28 | 2012-07-11 | 盐城彩阳电器阀门有限公司 | Completion reoperation blowout control tail tube valve |
| CN204457571U (en) * | 2015-01-08 | 2015-07-08 | 中国石油天然气股份有限公司 | Bumping pump type blowout prevention device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105201454A (en) | 2015-12-30 |
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Granted publication date: 20171208 Termination date: 20210901 |
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