CN202882846U - Downhole isolating valve - Google Patents
Downhole isolating valve Download PDFInfo
- Publication number
- CN202882846U CN202882846U CN 201220523712 CN201220523712U CN202882846U CN 202882846 U CN202882846 U CN 202882846U CN 201220523712 CN201220523712 CN 201220523712 CN 201220523712 U CN201220523712 U CN 201220523712U CN 202882846 U CN202882846 U CN 202882846U
- Authority
- CN
- China
- Prior art keywords
- ball seat
- runner pipe
- isolating valve
- pipe
- runner
- 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
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Abstract
The utility model relates to an oil field drill completing tools, in particular to a downhole isolating valve. The inner wall of an outer pipe of the downhole isolating valve is in threaded connection with a runner pipe, and the inner wall of the outer pipe is sealed with the runner pipe through a sealing ring. A ball seat is connected on the inner wall of the runner pipe through a shearing pin. The ball seat is correspondingly communicated with a running hole in the runner pipe. Sealing rings are arranged on the upper portion and the lower portion of communication holes of the ball seat so that the ball seat and the runner pipe can be sealed. An anti-toppling ring is arranged on a step of the ball seat and is locked through an anti-toppling ring blocking sleeve. A ball seat blocking sleeve and the lower end of the runner pipe are in threaded connection and are fixed through an anti-rotating pin. A runner lower connector and the lower end of the outer pipe are in threaded connection and are fixed through an anti-rotating pin. According to the downhole isolating valve, a self-locking function is achieved, reliability of isolation is improved, and annular fluid reverse is avoided, and the shortcomings that an existing isolating valve is not reliable in isolating, and annular fluid reverse can happen easily are overcome.
Description
Technical field:
The utility model relates to a kind of oil field drilling completion tool, particularly a kind of down-hole isolating valve.
Background technology:
In recent years along with the raising of drilling well and exploration engineering, in order to improve better oil recovery rate or the horizontal well of low-permeability oil gas reservoir to be increased production transformation, just must adopt some yield-increasing technologies.For the horizontal well of extensive use in the oil field and ripe multilateral well day by day, how research realizes that its flow segmentation control, staged fracturing are further to improve the new method that recovery ratio prolongs the oil well life-span.
Isolating valve generally is connected to the least significant end of multistage sliding sleeve staged fracturing tool pipe string, is lowered in the process at the pipe string, can circulate.Transfer put in place after, the pitching swaging of spraining becomes sealing, realizes the inside and outside isolation of pipe string.Yet existing isolating valve isolation is unreliable, is prone to the phenomenon that annular fluid is returned.
The utility model content:
The technical problems to be solved in the utility model provides a kind of down-hole isolating valve, and this device has realized having auto-lock function, improves the reliability of isolation, prevents that annular fluid from returning.It is unreliable to have overcome existing isolating valve isolation, is prone to the deficiency that annular fluid is returned phenomenon.
Technical solution adopted in the utility model is: a kind of down-hole isolating valve comprises outer tube and ball; Be threaded runner pipe and seal by sealing ring of outer tube wall, ball seat is connected on the runner pipe inwall by shear pin, ball seat and the corresponding connection of the opening on the runner pipe, and up and down sealing ring is installed and runner pipe seals at the intercommunicating pore of ball seat; Inverted-proof ring is installed on the step of ball seat, and is locked by the inverted-proof ring interstage sleeve; The ball seat interstage sleeve is threaded with the runner pipe lower end and fixes by the anti-rotation pin, and the circulation lower contact is threaded with the outer tube lower end and fixes by the anti-rotation pin.
The beneficial effects of the utility model are: the utility model has been owing to adopted the mode that inverted-proof ring is installed, thereby has auto-lock function, improves the reliability of isolation, prevents that annular fluid from returning, and is simple in structure, easy to operate.
Description of drawings:
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
As shown in drawings, a kind of down-hole isolating valve comprises outer tube 1 and ball 2; Outer tube 1 inner thread connects runner pipe 3 and seals by sealing ring, ball seat 4 is connected on runner pipe 3 inwalls by shear pin 5, the corresponding connection of opening on ball seat 4 and the runner pipe 3, and sealing ring is installed up and down and runner pipe 3 seals at the intercommunicating pore of ball seat 4; Inverted-proof ring 6 is installed on the step of ball seat 4, and by 7 lockings of inverted-proof ring interstage sleeve; Ball seat interstage sleeve 8 is threaded with runner pipe 3 lower ends and fixes by the anti-rotation pin, and circulation lower contact 10 is threaded with outer tube 1 lower end and is fixing by anti-rotation pin 9.
Construction is lowered in the process, the opening of ball seat 4 is relative with the opening of runner pipe 3, can circulate, after tubing string is lowered into projected depth, pitching 2 falls on the tapered slope of ball seat 4, inwardly suppress, when pressure reached design load, shear pin 5 was cut off, ball seat 4 drives inverted-proof ring 6 and inverted-proof ring interstage sleeve 7 moves down, the opening of the opening of ball seat 4 and runner pipe 3 staggers, circulation blocking-up, the inside and outside isolation of pipe.Inverted-proof ring 6 blocks self-locking in runner pipe 3, prevent that annular fluid from returning.
Be understandable that, more than about specific descriptions of the present utility model, only for the utility model being described and being not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.
Claims (1)
1. a down-hole isolating valve comprises outer tube (1) and ball (2); It is characterized in that: outer tube (1) inner thread connects runner pipe (3) and seals by sealing ring, ball seat (4) is connected on runner pipe (3) inwall by shear pin (5), the corresponding connection of opening on ball seat (4) and the runner pipe (3), and sealing ring is installed up and down and runner pipe (3) seals at the intercommunicating pore of ball seat (4); Inverted-proof ring (6) is installed on the step of ball seat (4), and is locked by inverted-proof ring interstage sleeve (7); Ball seat interstage sleeve (8) is threaded with runner pipe (3) lower end and fixes by the anti-rotation pin, and circulation lower contact (10) is threaded with outer tube (1) lower end and is fixing by anti-rotation pin (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523712 CN202882846U (en) | 2012-10-12 | 2012-10-12 | Downhole isolating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523712 CN202882846U (en) | 2012-10-12 | 2012-10-12 | Downhole isolating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202882846U true CN202882846U (en) | 2013-04-17 |
Family
ID=48074286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220523712 Expired - Fee Related CN202882846U (en) | 2012-10-12 | 2012-10-12 | Downhole isolating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202882846U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670332A (en) * | 2013-12-31 | 2014-03-26 | 安东石油技术（集团）有限公司 | Wellbore isolation valve |
| CN103670331A (en) * | 2013-12-31 | 2014-03-26 | 安东石油技术（集团）有限公司 | Shaft isolation valve |
| CN103696735A (en) * | 2013-12-31 | 2014-04-02 | 安东石油技术（集团）有限公司 | Anti-flyback type shaft isolating valve |
| CN104514517A (en) * | 2013-09-27 | 2015-04-15 | 中国石油化工集团公司 | Isolating valve |
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
| CN106522912A (en) * | 2016-12-09 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Leather cup packing fracturing pipe string for preventing leather cup from being worn |
-
2012
- 2012-10-12 CN CN 201220523712 patent/CN202882846U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514517A (en) * | 2013-09-27 | 2015-04-15 | 中国石油化工集团公司 | Isolating valve |
| CN103670332A (en) * | 2013-12-31 | 2014-03-26 | 安东石油技术（集团）有限公司 | Wellbore isolation valve |
| CN103670331A (en) * | 2013-12-31 | 2014-03-26 | 安东石油技术（集团）有限公司 | Shaft isolation valve |
| CN103696735A (en) * | 2013-12-31 | 2014-04-02 | 安东石油技术（集团）有限公司 | Anti-flyback type shaft isolating valve |
| CN103670332B (en) * | 2013-12-31 | 2016-02-10 | 安东石油技术（集团）有限公司 | Shaft isolation valve |
| CN103670331B (en) * | 2013-12-31 | 2016-06-08 | 安东石油技术（集团）有限公司 | A kind of shaft isolation valve |
| CN103696735B (en) * | 2013-12-31 | 2016-08-17 | 安东石油技术（集团）有限公司 | Anti-flyback type shaft isolating valve |
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
| CN106522912A (en) * | 2016-12-09 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Leather cup packing fracturing pipe string for preventing leather cup from being worn |
| CN106522912B (en) * | 2016-12-09 | 2024-03-12 | 中国石油天然气集团有限公司 | Leather cup packing pressure-separation fracture-prevention pipe string capable of preventing leather cup from being worn |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20141012 |
|
| EXPY | Termination of patent right or utility model |