CN204252947U - Self-closing water filling is blocked device - Google Patents
Self-closing water filling is blocked device Download PDFInfo
- Publication number
- CN204252947U CN204252947U CN201420585377.3U CN201420585377U CN204252947U CN 204252947 U CN204252947 U CN 204252947U CN 201420585377 U CN201420585377 U CN 201420585377U CN 204252947 U CN204252947 U CN 204252947U
- Authority
- CN
- China
- Prior art keywords
- lower contact
- valve ball
- spring
- positive cover
- supporting positive
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 210000002583 cell-derived microparticle Anatomy 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 abstract description 15
- 239000007924 injection Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000003129 oil well Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
Self-closing water filling is blocked device, relates to the down-hole kit in a kind of oil exploitation oil-field flooding technique.Its principal character is, is linked together by ectosome and lower contact, and valve ball is placed in lower contact upper end, is provided with supporting positive cover on lower contact top, is set with spring centralizer body, spring in supporting positive cover, has cross through hole in the bottom of supporting positive cover.Its usefulness is: because valve ball is arranged in supporting positive cover, above valve ball, Compress Spring is installed, by spring centralizer body, valve ball is pressed on the hole of lower contact upper end, when this device tilts to install, valve ball can not depart from lower contact, and the return performance of valve ball is good, and sealing is reliable, this device to be specially adapted in inclined shaft or in horizontal well, in water injection technology, realize the effect of self-enclosed sealing.
Description
Technical field
The utility model relates to the down-hole kit in a kind of oil exploitation oil-field flooding technique.
Background technology
In oil-field flooding technique, linked together by water-filling oil pipe and various water injection tool in oil well, composition water injection string, in their lower end, be provided with a water filling to block device, when underground water-injection, it can play sealing process, when anti-flushing well, it can open again under the effect of hydraulic pressure, realizes the object of backwash oil well.Only have a kind of water filling of installing in peupendicular hole to block device at present, it is made up of ectosome, lower contact, spheroid, and spheroid relies on the gravity of itself to be seated on the hole of lower contact.When being arranged in peupendicular hole by this device of blocking, the centre bore of lower contact can close by spheroid, reaches the effect cut off with casing annulus, plays the effect of shutoff.And now because inclined shaft and horizontal well implement the increasing of water injection technology, this water filling device of blocking just is not suitable in the water injection technology of inclined shaft and horizontal well, because when it is arranged in inclined shaft or horizontal well, lower contact will be tilted an angle, spheroid just can not be seated on the hole of lower contact upper end reposefully, be easy to tumble on one side, thus just can not play the effect of partition, not reach closed effect.
Utility model content
The purpose of this utility model is to provide a kind of self-closing water filling and blocks device, and it is applicable to, in inclined shaft or water injection of horizontal well technique, realize self-enclosed effect.
Technical solution of the present utility model realizes like this, a kind of self-closing water filling is blocked device, be together by a threaded connection by ectosome 1 and lower contact 7 and form, valve ball 6 is placed in the upper end of lower contact 7, and its special character is, is provided with supporting positive cover 3 on the top of lower contact 7 by screw thread, spring centralizer body 5 is set with in supporting positive cover 3, spring centralizer body 5 is set with spring 4, and spring pressure cap 2 is arranged on the upper end of supporting positive cover 3 by screw thread, has cross through hole in the bottom of supporting positive cover 3.
Usefulness of the present utility model is: because the valve ball in the utility model is contained in supporting positive cover, above valve ball, Compress Spring is installed, valve ball is pressed on the hole of lower contact upper end by spring centralizer body by Compress Spring, when this device tilts to install, valve ball can not depart from lower contact, and the return performance of valve ball is good, and sealing is reliable, can use during water filling in inclined shaft or in horizontal well, realize the effect of self-enclosed sealing.
Accompanying drawing explanation
Accompanying drawing is complete section structural representation of the present utility model.
In figure: 1, ectosome; 2, spring pressure cap; 3, supporting positive cover; 4, spring; 5, spring centralizer body; 6, valve ball; 7, lower contact.
Detailed description of the invention
Be described further below in conjunction with accompanying drawing: supporting positive cover 3 is the female cylindrical body of two ends tool, is evenly equipped with the rectangular through holes of 4 transverse directions in its underpart surrounding, through hole is longitudinally longer.Lower contact 7 is the cylindrical body inside and outside with step, all has external screw thread at its two ends and middle part, and its upper end has accurately machined interior chamfering.Spring centralizer body 5 is a cylindrical body, its external surface has a step, and inside is a longitudinal hole, and lower end has interior chamfering.Supporting positive cover 3 is linked together by screw thread and lower contact 7, valve ball 6, spring centralizer body 5 and spring 4 are sleeved in supporting positive cover 3 successively, valve ball 6 is made to be seated in the interior chamfering of lower contact 7 upper end, spring 4 is enclosed within spring centralizer body 5, the lower end of spring 4 is seated on the step of spring centralizer body 5, spring pressure cap 2 is arranged on the upper end of supporting positive cover 3, by spring-compressed by screw thread.Ectosome 1 is a female cylindrical body of two ends tool, and inner surface has step, and its lower end is linked together by screw thread and lower contact 7.
Use in down-hole this self-closing water filling block device time, the upper end of its ectosome 1 is threaded connection the bottom at water injection string, and the lower end of its lower contact 7 is linked together by screw thread and oil pipe, screen casing, is lowered in well.In the process of G.I.H, under fluid pressure effect in casing annulus, ball valve 6 is pushed upwardly out, by the cross through hole on supporting positive cover, make to be connected between water injection string and casing annulus, liquid in casing annulus can enter in water injection string, plays the effect of ball-and-seat, makes the pressure inside and outside water injection string reach balance.After the design attitude of G.I.H, after water injection string internal and external pressure balance, valve ball 6 resets under the effect of spring 4, realizes the passage between self-closed water injection string and casing annulus.Because spring 4 is in by the state compressed all the time, be pressed on valve ball 6 by spring centralizer body 5, and due to spring, spring centralizer body, valve ball be all be contained in supporting positive cover 3, no matter this device tilts much angles, valve ball 6 all can not be deviate from, when water filling work is carried out, valve ball 6 is in sealing state all the time, effectively can block the passage between water injection string and casing annulus.When backwash oil well, the fluid pressure effect lower valve ball in sleeve pipe is opened, and opens the passage of backwash oil well, can realize the object of backwash oil well.This device is specially adapted in the water injection technology of inclined shaft or horizontal well.
Claims (1)
1. a self-closing water filling is blocked device, be together by a threaded connection by ectosome (1) and lower contact (7) and form, valve ball (6) is placed in the upper end of lower contact (7), it is characterized in that, by screw thread, supporting positive cover (3) is installed on the top of lower contact (7), spring centralizer body (5) is set with in supporting positive cover (3), spring centralizer body (5) is set with spring (4), spring pressure cap (2) is arranged on the upper end of supporting positive cover (3) by screw thread, have cross through hole in the bottom of supporting positive cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585377.3U CN204252947U (en) | 2014-09-22 | 2014-09-22 | Self-closing water filling is blocked device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585377.3U CN204252947U (en) | 2014-09-22 | 2014-09-22 | Self-closing water filling is blocked device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204252947U true CN204252947U (en) | 2015-04-08 |
Family
ID=52957267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420585377.3U Expired - Fee Related CN204252947U (en) | 2014-09-22 | 2014-09-22 | Self-closing water filling is blocked device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204252947U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-09-22 CN CN201420585377.3U patent/CN204252947U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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: 20150408 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |