CN204024591U - Horizontal well casing pressure is opened reverse circulation valve - Google Patents
Horizontal well casing pressure is opened reverse circulation valve Download PDFInfo
- Publication number
- CN204024591U CN204024591U CN201420505628.2U CN201420505628U CN204024591U CN 204024591 U CN204024591 U CN 204024591U CN 201420505628 U CN201420505628 U CN 201420505628U CN 204024591 U CN204024591 U CN 204024591U
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- CN
- China
- Prior art keywords
- sliding sleeve
- urceolus
- inner sliding
- boss
- retaining ring
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of horizontal well casing pressure and open reverse circulation valve, it comprises the top connection being threaded, urceolus and lower contact, urceolus top has guiding gutter, urceolus inside is also provided with an inner sliding sleeve, lower contact inside is connected with a balance set by shear pin, inner sliding sleeve top seal is installed in the endoporus of top connection bottom, bottom is pressed on balance set upper end, on inner sliding sleeve outer wall, be formed with boss and the pressure transmission hole that is positioned at boss below, boss sealing paste is combined on outer tube inner wall and boss is positioned at below the guiding gutter of urceolus, pressure transmission hole can be communicated with the ring cavity between inner sliding sleeve endoporus and urceolus and inner sliding sleeve, urceolus and lower contact junction are provided with a retaining ring, inner sliding sleeve is positioned on the outer wall above retaining ring and is also formed with the locating slot being used in conjunction with retaining ring.The utility model is safe and reliable, easy accessibility, the problem with pressure-bearing deficiency of opening in advance that can effectively solve that reverse circulation valve in use occurs, and can realize fast and be communicated with oil jacket and locking lastingly.
Description
Technical field
The utility model relates to downhole tool Manufacture and application technical field, and especially a kind of horizontal well casing pressure is opened reverse circulation valve.
Background technology
After fractured horizontal well work progress, often need to face following point.The one, kill job, is used KCL solution to carry out circulation well cleanup; The 2nd, press rear oil and gas production deficiency or without output, need to instead arrange from sleeve pipe injecting gas from oil pipe the row of helping; The 3rd, carry out oil pressure and casing pressure monitoring in postpartum.
During due to pressing crack construction, oil jacket annular space is kept apart by oil pipe and packer, cannot carry out above operation.In use easily there is opening in advance the situation with pressure-bearing deficiency in existing reverse circulation valve, causes tieback string to lose efficacy, and increased operating cost.If there is no reverse circulation valve, while carrying out above operation, need to carry tieback string, increase construction risk.Reverse circulation valve, as down-hole kit, has played the effect can not be substituted in above operation.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of safe and reliable, easy accessibility, the problem with pressure-bearing deficiency of opening in advance that can effectively solve that reverse circulation valve in use occurs, and can realize fast the horizontal well casing pressure that is communicated with oil jacket and lasting locking and open reverse circulation valve.
In order to solve the problems of the technologies described above, the utility model comprises the top connection being threaded successively, urceolus and lower contact, described urceolus top has guiding gutter, this urceolus inside is also provided with an inner sliding sleeve, described lower contact inside is connected with a balance set by shear pin, described inner sliding sleeve top seal is installed in the endoporus of top connection bottom, bottom is pressed on described balance set upper end, on this inner sliding sleeve outer wall, be formed with boss and the pressure transmission hole that is positioned at boss below, described boss sealing paste is combined on outer tube inner wall and this boss is positioned at below the guiding gutter of urceolus, described pressure transmission hole can be communicated with the ring cavity between inner sliding sleeve endoporus and urceolus and inner sliding sleeve, at described urceolus and lower contact junction, be provided with a retaining ring, described inner sliding sleeve is positioned on the outer wall above retaining ring and is also formed with the locating slot being used in conjunction with retaining ring.
On described outer tube inner wall, be formed with for limiting the descending step of boss on inner sliding sleeve, wherein on the distance between boss and step and inner sliding sleeve, the distance between locating slot and retaining ring is consistent.
Described urceolus, inner sliding sleeve and balance put and are equipped with seal groove, adopt sulfuration rubber sealing in seal groove.
The beneficial effects of the utility model are:
(1) be designed with seal groove and adopt sulfuration rubber sealing, guaranteeing integrally-built sealing;
(2) design of compensating cylinder, while guaranteeing pressing crack construction all the time in equilibrium state;
(3) designed lock ring retaining mechanism, guaranteed that shear pin cuts off rear inner sliding sleeve and can not reseal by rollback;
(4) easy to operate, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model horizontal well casing pressure is opened reverse circulation valve.
The specific embodiment
Referring to Fig. 1, horizontal well casing pressure of the present utility model is opened reverse circulation valve and is comprised the top connection 1 being threaded successively, urceolus 2 and lower contact 7, described urceolus 2 tops have guiding gutter, these urceolus 2 inside are also provided with an inner sliding sleeve 3, described lower contact 7 inside are connected with a balance set 6 by shear pin 5, described inner sliding sleeve 3 top seals are installed in top connection 1 bottom endoporus, bottom is pressed on described balance set 6 upper ends, on these inner sliding sleeve 3 outer walls, be formed with boss and the pressure transmission hole that is positioned at boss below, described boss sealing paste is combined on urceolus 2 inwalls and this boss is positioned at below the guiding gutter of urceolus 2, described pressure transmission hole can be communicated with the ring cavity between inner sliding sleeve 3 endoporus and urceolus 2 and inner sliding sleeve 3, at described urceolus 2 and lower contact 7 junctions, be provided with a retaining ring 4, described inner sliding sleeve 3 is positioned on the outer wall of retaining ring 4 tops and is also formed with the locating slot being used in conjunction with retaining ring 4.
On described urceolus 2 inwalls, be formed with for limiting the descending step of boss on inner sliding sleeve 3, wherein on the distance between boss and step and inner sliding sleeve 3, the distance between locating slot and retaining ring 4 is consistent.
On described urceolus 2, inner sliding sleeve 3 and balance set 6, be equipped with seal groove, in seal groove, adopt sulfuration rubber sealing.On urceolus 2, inner sliding sleeve 3 and balance set 6, be all designed with seal groove and guarantee integrally-built sealing for placing sealing ring.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
The utility model adopts sleeve pipe to suppress and cuts off shear pin, opens the design of rear locking, and the utility model structure comprises top connection 1, urceolus 2, inner sliding sleeve 3, retaining ring 4, shear pin 5, balance set 6 and lower contact 7.Reverse circulation valve of the present utility model is divided into piecing devices, sliding bush apparatus and retaining mechanism.Piecing devices comprise top connection 1 and lower contact 7, and upper and lower joint adopts tubing thread, is convenient to be connected with the oil pipe of going into the well; Sliding bush apparatus comprises inner sliding sleeve 3 and balance set 6, inner sliding sleeve 3 tops are installed on top connection 1 bottom endoporus, middle part boss and urceolus 2 are by rubber sealing, and bottom is installed on urceolus 2 and lower contact 7 endoporus, and balance set 6 is arranged in lower contact 7 endoporus and by shear pin 5 and fixes; Retaining mechanism comprises the locating slot on retaining ring 4 and inner sliding sleeve 3, and when inner sliding sleeve 3 moves to bottom, retaining ring 4 locking positioning grooves are realized the object of self-locking.Casing pressure acts on inner sliding sleeve 3 and promotes balance set 6 cuts off shear pin 5, thereby the guiding gutter on urceolus 2 is opened stable and discharge opeing reliably and a casing pressure monitoring channel are provided.
Lower contact 7 and and balance set 6 on be equipped with respectively screwed hole and groove, for placing shear pin, the opening pressure of reverse circulation valve is determined by the size of shear pin.
During horizontal well completion construction, reverse circulation valve is connected to tieback string and according to segmentation transformation, require to be lowered into the above position of hanger.Reverse circulation valve is by suppressing and operate in sleeve pipe.When carrying out pressing crack construction, must guarantee that tubing pressure is greater than casing pressure, thereby make reverse circulation valve all the time in closed condition.During normal pressing crack construction pressure break, oil pressure is higher than casing pressure force value all the time, and oil pressure acts on boss lower surface by the pressure transmission hole on inner sliding sleeve 3, guarantees in work progress that inner sliding sleeve is all the time in stationary state.Balance set 6 pressure at two ends values are identical, and shear pin 5 can not cut off.After construction finishes, balance pump truck is beaten casing pressure.As overlap the high certain numerical value of pressure ratio oil pressure, and acting on inner sliding sleeve 3 downwards active force and promote balance set 6 and cut off shear pin, pressure continues to promote that inner sliding sleeve 3 is descending to put in place, and retaining mechanism starts, and realizes locking.Cover is after pressure valve opens, and can carry out anti-circulation well cleanup, gas well helps row and oil jacket to press the operations such as detection, avoids later stage lift pipe string, has reduced construction risk.
The mode that the utility model is suppressed by sleeve pipe is cut off shear pin to complete the descending and locking action of inner sliding sleeve, thereby completes the unlatching of cover pressure valve, and this is current relatively more effective implementation with guaranteeing success rate.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but within these embodiment are included in scope of the present utility model.
Claims (3)
1. a horizontal well casing pressure is opened reverse circulation valve, it is characterized in that: comprise the top connection (1) being threaded successively, urceolus (2) and lower contact (7), described urceolus (2) top has guiding gutter, this urceolus (2) inside is also provided with an inner sliding sleeve (3), described lower contact (7) is inner is connected with a balance set (6) by shear pin (5), described inner sliding sleeve (3) top seal is installed in the endoporus of top connection (1) bottom, bottom is pressed on described balance set (6) upper end, on this inner sliding sleeve (3) outer wall, be formed with boss and the pressure transmission hole that is positioned at boss below, described boss sealing paste is combined on urceolus (2) inwall and this boss is positioned at below the guiding gutter of urceolus (2), described pressure transmission hole can be communicated with the ring cavity between inner sliding sleeve (3) endoporus and urceolus (2) and inner sliding sleeve (3), at described urceolus (2) and lower contact (7) junction, be provided with a retaining ring (4), described inner sliding sleeve (3) is positioned on the outer wall above retaining ring (4) and is also formed with the locating slot being used in conjunction with retaining ring (4).
2. according to horizontal well casing pressure claimed in claim 1, open reverse circulation valve, it is characterized in that: on described urceolus (2) inwall, be formed with for limiting the descending step of boss on inner sliding sleeve (3), wherein boss is consistent with distance and the distance between the upper locating slot of inner sliding sleeve (3) and retaining ring (4) between step.
3. according to the horizontal well casing pressure described in any one in claim 1 and 2, open reverse circulation valve, it is characterized in that: on described urceolus (2), inner sliding sleeve (3) and balance set (6), be equipped with seal groove, in seal groove, adopt sulfuration rubber sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505628.2U CN204024591U (en) | 2014-09-03 | 2014-09-03 | Horizontal well casing pressure is opened reverse circulation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505628.2U CN204024591U (en) | 2014-09-03 | 2014-09-03 | Horizontal well casing pressure is opened reverse circulation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024591U true CN204024591U (en) | 2014-12-17 |
Family
ID=52064475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420505628.2U Expired - Fee Related CN204024591U (en) | 2014-09-03 | 2014-09-03 | Horizontal well casing pressure is opened reverse circulation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024591U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840141A (en) * | 2015-01-13 | 2016-08-10 | 中国石油天然气股份有限公司 | Impact type circulating valve |
| CN106482934A (en) * | 2015-08-28 | 2017-03-08 | 中国石油化工股份有限公司 | Reacting cycle downhole tool Opening pressure test device and method |
| CN115247545A (en) * | 2021-04-27 | 2022-10-28 | 中国石油化工股份有限公司 | Pressure transmission tool and method for drilling-plug-free cementing completion |
-
2014
- 2014-09-03 CN CN201420505628.2U patent/CN204024591U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840141A (en) * | 2015-01-13 | 2016-08-10 | 中国石油天然气股份有限公司 | Impact type circulating valve |
| CN105840141B (en) * | 2015-01-13 | 2018-10-16 | 中国石油天然气股份有限公司 | Impact type circulating valve |
| CN106482934A (en) * | 2015-08-28 | 2017-03-08 | 中国石油化工股份有限公司 | Reacting cycle downhole tool Opening pressure test device and method |
| CN106482934B (en) * | 2015-08-28 | 2019-12-10 | 中国石油化工股份有限公司 | Reverse circulation downhole tool opening pressure testing device and method |
| CN115247545A (en) * | 2021-04-27 | 2022-10-28 | 中国石油化工股份有限公司 | Pressure transmission tool and method for drilling-plug-free cementing completion |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20170903 |