CN2658385Y - Relief switch for gas well work - Google Patents
Relief switch for gas well work Download PDFInfo
- Publication number
- CN2658385Y CN2658385Y CN 200320101949 CN200320101949U CN2658385Y CN 2658385 Y CN2658385 Y CN 2658385Y CN 200320101949 CN200320101949 CN 200320101949 CN 200320101949 U CN200320101949 U CN 200320101949U CN 2658385 Y CN2658385 Y CN 2658385Y
- Authority
- CN
- China
- Prior art keywords
- cam
- gas well
- model
- utility
- sleeve
- 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 a non-discharging gas well switch, resolves the problem that the prior gas-discharging and well-killing operation of the gas well wastes energy and pollutes the strata layer environment, and is characterized in that an operating cylinder (7) having an inner wall with a groove (12) is disposed between the upper and lower connectors (2 and 10); the operating cylinder (7) inside is provided with a cam (8) having a through hole penetrated through a matched central sleeve (4) and an outer sleeve (5); the top and bottom of the cam(8) are respectively provided with a stop tube (6) of the cam and a seal body (9) connected with an underside of the central sleeve (4); the top of the central sleeve(4) is in parallel arranged with a protecting sleeve(11) and a connecting body(3) connected with a bailing head(1). The utility model has the advantages that the well pressure is not released and the strata layer environment is protected.
Description
Technical field:
The utility model relates to the used gas well down-hole control tool in oil field development field, belongs to not open flow switch of gas well operation.
Background technology:
Gas well is in the process of working long hours, can break down equally in the down-hole, therefore will carry out maintenance activity, produce blowout when preventing the gas well operation, general employing kill job, both wasted energy, pollute the stratum again, and do not have isolated plant in order to control blowout at present, therefore when kill-job, can only adopt well killing fluid, though adopt low injury well killing fluid, but fundamentally do not solve because of well killing fluid injures the influence that gas well deliverability caused, what influence was produced normally carries out, and brings unnecessary loss to production.
The utility model content:
Waste energy and pollute the deficiency of ground environment in order to overcome existing gas well operation open flow kill-job; the utility model provides not open flow switch of a kind of gas well operation; this switch has the characteristics of open flow not and protection ground environment when the gas well operation, can play the effect on energy conservation protection stratum.
The technical solution of the utility model is: gas well operation not open flow switch comprises lower contact, be equipped with the seating nipple of inner wall belt groove between the last lower contact, seating nipple is built-in with and passes through hole that the China and foreign countries that are nested put and the cam that blocks the groove upper end mutually, the seal that is equipped with cam interstage sleeve and continuous middle cover lower end up and down respectively of cam, middle set upper side is equipped with sheath and the connector of the fishing head that links to each other side by side.
The beneficial effect that the utlity model has is: because this switch is equipped with the seating nipple of inner wall belt groove between last lower contact, seating nipple is built-in with blanking plug, blanking plug is made up of middle cover and overcoat, seating nipple is built-in with the through hole that passes the middle overcoat that is nested and blocks the cam of groove upper end mutually, the cam interstage sleeve that is equipped with respectively up and down of middle cover cam ring reaches the middle seal that overlaps the lower end that links to each other, and blanking plug is by the rotation realization locking of cam; Put the connector that is equipped with the fishing head that links to each other in the overcoat, when ram bump fishing head 1, be delivered to seal by middle cover, seal is descending, opens the pressure release of balance relief hole, realizes pit shaft and strata pressure balance, it is simple to have technology, the advantage that operating expenses is low.
Description of drawings:
Accompanying drawing 1 is a structure sectional view of the present utility model.
1-fishing head among the figure, the 2-top connection, the 3-connector overlaps among the 4-, 5-overcoat, 6-cam interstage sleeve, 7-seating nipple, 8-cam, 9-seal, 10-lower contact, 11-sheath, 12-groove.
The specific embodiment:
Below in conjunction with accompanying drawing will the utility model is described in further detail:
By shown in Figure 1, gas well operation not open flow switch comprises lower contact (2,10), last lower contact (2,10) be equipped with the seating nipple 7 of inner wall belt groove 12 between, seating nipple 7 is built-in with blanking plug, blanking plug is made up of middle cover 4 and overcoat 5, seating nipple 7 is built-in with and passes the middle overcoat (4 that is nested, 5) through hole and block the cam 8 of groove 12 upper ends mutually, middle cover 4 cam rings 8 be equipped with cam interstage sleeve 6 up and down respectively and link to each other in the seal 9 of cover 4 lower ends, blanking plug is by the rotation of cam 8, block the groove upper end mutually, realize locking; Cover 4 tops are equipped with sheath 11 and the connector 3 of the fishing head 1 that links to each other side by side in the overcoat 5, and sheath 11 plays guide effect, and connector 3 plays the effect of transmission of power.
The gas well operation not open flow oil layer protection tubing string by oil pipe, screen casing, box cupling, packer, open flow switch and bridge-type ball-and-seat are not formed, this switch places between packer and the bridge-type ball-and-seat, during operation, down-hole formation need be carried out shutoff, under the effect of mine gas pressure, fishing head 1 is up, make cam interstage sleeve 6 up thereupon, after cam 8 loses support, lose auto-lock function, middle cover 4 places in the overcoat 5, and the seal 9 below the middle cover 4 is with the relief hole shutoff, reach the purpose of closing well, realize down-hole blowout prevention function; After the operation, use impact tool bump fishing head 1, be delivered to seal 9 by middle cover 4, seal 9 is descending, opens the pressure release of balance relief hole, realizes pit shaft and strata pressure balance, re-uses fishing tool blanking plug safety is pulled out, recovers the gas well ordinary production.
Because it is simple to have used this switch to have technology, the advantage that operating expenses is low has reached not The purpose of open flow and protection ground environment is for cost has been saved in production.
Claims (1)
1, gas well operation open flow switch not, comprise lower contact (2,10), it is characterized in that: go up lower contact (2,10) be equipped with the seating nipple (7) of inner wall belt groove (12) between, seating nipple (7) is built-in with and passes the middle overcoat (4 that is nested, 5) through hole on and block the cam (8) of groove (12) upper end mutually, the seal (9) that is equipped with cam interstage sleeve (6) and continuous middle cover (4) lower end up and down respectively of cam (8), middle cover (4) upper end is equipped with the connector (3) of sheath (11) and continuous fishing head (1) side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320101949 CN2658385Y (en) | 2003-10-27 | 2003-10-27 | Relief switch for gas well work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320101949 CN2658385Y (en) | 2003-10-27 | 2003-10-27 | Relief switch for gas well work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2658385Y true CN2658385Y (en) | 2004-11-24 |
Family
ID=34339890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320101949 Expired - Fee Related CN2658385Y (en) | 2003-10-27 | 2003-10-27 | Relief switch for gas well work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2658385Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405323A (en) * | 2014-10-23 | 2015-03-11 | 北京海蓝科技开发有限责任公司 | Die coupling for petroleum instrument and petroleum instrument |
-
2003
- 2003-10-27 CN CN 200320101949 patent/CN2658385Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405323A (en) * | 2014-10-23 | 2015-03-11 | 北京海蓝科技开发有限责任公司 | Die coupling for petroleum instrument and petroleum instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041124 Termination date: 20101027 |