CN205330617U - Novel annular space relief valve - Google Patents
Novel annular space relief valve Download PDFInfo
- Publication number
- CN205330617U CN205330617U CN201521053517.3U CN201521053517U CN205330617U CN 205330617 U CN205330617 U CN 205330617U CN 201521053517 U CN201521053517 U CN 201521053517U CN 205330617 U CN205330617 U CN 205330617U
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- annular space
- central canal
- sliding sleeve
- piston
- safety valve
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Abstract
The utility model provides a novel annular space relief valve, including urceolus structure, inner tube structure, the urceolus structure includes biography pressure piston bush, last spring housing, sliding sleeve adapter sleeve, lower spring housing that top -down connected gradually, the inner tube structure includes sliding sleeve center tube, connection center pipe, center tube that top -down connected gradually, the biography of urceolus presses the piston bush, go up to form between the sliding sleeve center tube of spring housing and inner tube and go up the annular space, should go up the annular space in installation liquid accuse annular space open closing device, form annular space down between the lower spring housing of urceolus and the connection center pipe of inner tube, the center tube, closing device is opened to the reserve annular space of installation in this time annular space. The utility model discloses an opening and closing of annular space is realized to the hydraulic control pipeline, can open the alternate channel through the mode that the annular space was suppressed under the condition that liquid keyholed back plate line became invalid, and when stopping the annular space water injection, the alternate channel can be closed by oneself, guarantees well control safety.
Description
Technical field
This utility model relates to two-tube water filling annular space safety device, especially a kind of novel annulus safety valve。
Background technology
What current chengdao oilfield sand production petroleum reservoir water filling adopted is, and big orifice selective sand control surveys adjusts water injection technology, namely first enters down sand control string and sets process pipe string, then under enter to survey and adjust water injection string。This technique needs just to carry out a steel wire operation allotment at set intervals, and workload is bigger。Realize the two-tube water filling supporting with big orifice selective sand control and can reduce or remit steel wire test allotment operation, reduce water filling cost, improve waterflooding development effect。Annulus safety valve can play the effect preventing blowout or overflow, is to ensure that the important tool of two-tube water filling well control safety。Present invention can ensure that opening of water filling annular space and being automatically switched off in emergency circumstances。
Early stage chengdao oilfield carried out the experiment of two-tube dispensing, for some problems occurred at that time, two-tube water injection technology is improved, the annulus safety valve (ZL201010160360X of front complement, ZL201020175334X) in structure and reliability, new two-tube water injection technology has not been adapted to, and situation about cannot close after once in a while unlatching occurring, bring great potential safety hazard for on-the-spot well control。
The patent of invention annulus safety valve (ZL201010160360X) of Authorization Notice No. CN101839117B, day for announcing 2014-04-02 discloses one and is formed annulus safety valve by upper body, annulus line, piston, adapter sleeve, sealing ring, spring and centralizer。This annulus safety valve is applicable to interior pipe and enters down at twice, namely first enters down the interior pipe of below annulus safety valve, is connected with pipe in bottom by relief valve, then wait until under outer tube complete take hanger after, then under enter the interior pipe of more than annulus safety valve。This structure is inapplicable and the double-pipe technological pipe column of new improvement, this tubing string, is after complete under outer tube, will enter pipe in all under one time, and in water filling, pipe is connected to close traverse from annulus safety valve of inserting, and close inserts the appointment position being positioned at annulus safety valve。During this annulus safety valve is applied at the scene, it has been found that the situation that occasional cannot be closed after there is unlatching, bring great potential safety hazard for on-the-spot well control。Newly-designed annulus safety valve changes original hydraulic pressure and pushes directly on the structure of piston and sealing ring, change into and promoted piston push-and-pull set and sliding sleeve central canal by piston, it is to avoid the phenomenon that annular space cannot be closed after opening。New annulus safety valve adds standby waterflood path, when liquid controling pipe line open failure, it is possible to suppress the standby annulus access of unlatching by annular space。
Another retrieval finds Authorization Notice No.: CN201687435U, the utility model patent annulus safety valve (ZL201020175334X) of day for announcing 2010-12-29 is consistent in structure with principle with the patent of invention annulus safety valve (ZL201010160360X) of above-mentioned described Authorization Notice No. CN101839117B, day for announcing 2014-04-02。
Utility model content
The purpose of this utility model is to provide a kind of novel annulus safety valve, and what solve that prior art exists can not be precisely controlled annular space open and close and cannot with the problem of new two-tube process matching。It realizes the open and close of annular space by hydraulic control lines, can open alternate channel by the mode that annular space is suppressed when liquid controling pipe line loses efficacy, and when stopping annulus water injection, alternate channel can be closed voluntarily, it is ensured that well control safety。
The purpose of this utility model can be achieved by the following technical measures:
This novel annulus safety valve includes outer tube structure, inner tube structure, described outer tube structure includes the pressure transmission piston bush being sequentially connected with from top to bottom, upper spring housing, sliding sleeve adapter sleeve, lower spring set, described inner tube structure includes the sliding sleeve central canal, connection central canal, the central canal that are sequentially connected with from top to bottom, form upper annular space between the pressure transmission piston bush of described urceolus, upper spring housing and the sliding sleeve central canal of inner core, this installs in annular space hydraulic control annular space opening closure；Form lower annular space between lower spring set and the connection central canal of inner core, the central canal of described urceolus, standby annular space opening closure is installed in this lower annular space。
The purpose of this utility model realizes also by following technical measures:
Described pressure transmission piston bush, sliding sleeve central canal upper end are simultaneously connected with top connection, and described lower spring set, central canal lower end are simultaneously connected with lower contact, described top connection upper end connection coupling；Described upper annular space and lower annular space are subject to the obstruct of sliding sleeve adapter sleeve not connected state each other mutually in the axial direction。
Described hydraulic control annular space opening closure includes piston, piston push-and-pull set, locking nail, upper spring, installs piston in described pressure transmission piston bush, and described piston push-and-pull set is positioned at piston, and piston push-and-pull set is fixed on sliding sleeve central canal by locking nail。
Described pressure transmission piston bush offers the pressure transmission hole that axial two are symmetrical, and the axially extending bore that the connection top connection of this pressure transmission hole upper end is offered, lower end is communicated to the piston in pressure transmission piston bush。
Described standby annular space opening closure includes unidirectional bonnet, shear pin and lower spring, described unidirectional bonnet is installed between lower spring set and central canal, described lower spring is connected to unidirectional bonnet lower end, described unidirectional bonnet is fixed on central canal by shear pin, the through hole of the lower annular space of connection radially is offered in central canal bottom, also installing pressure cap in lower annular space, lower spring lower end is connected on pressure cap。
Be provided with between described sliding sleeve central canal and sliding sleeve connecting tube outer trough of belt back-up ring, middle trough of belt back-up ring, interior trough of belt back-up ring and O and formed packing group be connected guarantee seal。
Described connection central canal has T-shaped packing to be connected guarantee sealing with central canal。
Compared to prior art, this utility model has the advantages that
Can adapt to novel two-tube water injection string, change the mechanism of former annulus safety valve, it is ensured that will not annulus safety valve is still opened after liquid controling pipe line pressure release situation。Change the original unlatching way of propelling, improve the reliability of open and close。
Add standby unlatching passage, when liquid controling pipe line is suppressed and cannot be opened annulus safety valve, it is possible to the mode suppressed by annular space opens standby waterflood path, it is ensured that normal water filling；
When stopping note and emergency, alternate channel can be automatically switched off when opening, it is ensured that well control safety。
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment。
In figure: box cupling 1, top connection 2, back-up ring 3, O 4, back-up ring 5, O 6, pressure transmission piston bush 7, back-up ring 8, O 9, piston 10, piston push-and-pull set 11, locking nail 12, upper spring housing 13, sliding sleeve central canal 14, upper spring 15, sliding sleeve adapter sleeve 16, back-up ring 17, O 18, back-up ring 19, O 20, outer trough of belt back-up ring 21, middle trough of belt back-up ring 22, interior trough of belt back-up ring 23, O 24, lower spring set 25, connect central canal 26, back-up ring 27, O 28, central canal 29, T-shaped packing 30, packing pressure cap 31, unidirectional bonnet 32, back-up ring 33, O 34, shear pin 35, lower spring 36, back-up ring 37, O 38, pressure cap 39, back-up ring 40, O 41, back-up ring 42, O 43, lower contact 44。
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to illustrate as follows, but accompanying drawing only provides reference and purposes of discussion, is not used for this utility model is any limitation as。
According to Fig. 1, this figure is plotted as three sections, respectively a, b, c, a kind of annulus safety valve, including outer tube structure, inner tube structure, pressure transmission piston bush 7 that described outer tube structure includes being sequentially connected with from top to bottom, upper spring housing 13, sliding sleeve adapter sleeve 16, lower spring set 25, described inner tube structure includes the sliding sleeve central canal 14, connection central canal 26, the central canal 29 that are sequentially connected with from top to bottom, form upper annular space between the pressure transmission piston bush of described urceolus, upper spring housing and the sliding sleeve central canal of inner core, this installs in annular space hydraulic control annular space opening closure；Form lower annular space between lower spring set and the connection central canal of inner core, the central canal of described urceolus, standby annular space opening closure is installed in this lower annular space。Described pressure transmission piston bush, sliding sleeve central canal upper end are simultaneously connected with top connection 2, and described lower spring set, central canal lower end are simultaneously connected with lower contact 44, described top connection upper end connection coupling 1；Described upper annular space and lower annular space are subject to the obstruct of sliding sleeve adapter sleeve 16 not connected state each other mutually in the axial direction。Described hydraulic control annular space opening closure includes piston 10, piston push-and-pull set 11, locking nail 12, upper spring 15, piston 10 is installed in described pressure transmission piston bush, described piston push-and-pull set 11 is positioned at piston, and piston push-and-pull set is fixed on sliding sleeve central canal by locking nail 12。Described pressure transmission piston bush offers the pressure transmission hole that axial two are symmetrical, the axially extending bore that the connection top connection of this pressure transmission hole upper end is offered, lower end is communicated to the piston in pressure transmission piston bush, described standby annular space opening closure includes unidirectional bonnet 32, shear pin 35 and lower spring 36, described unidirectional bonnet 32 is installed between lower spring set and central canal, described lower spring is connected to unidirectional bonnet 32 lower end, described unidirectional bonnet is fixed on central canal by shear pin 35, the through hole of the lower annular space of connection radially is offered in central canal bottom, in lower annular space, pressure cap 39 is also installed, lower spring lower end is connected on pressure cap。
Be provided with between described sliding sleeve central canal and sliding sleeve connecting tube outer trough of belt back-up ring, middle trough of belt back-up ring, interior trough of belt back-up ring and O and formed packing group be connected guarantee seal。Described connection central canal has T-shaped packing to be connected guarantee sealing with central canal。Described piston, top connection and back-up ring, back-up ring and upper spring housing, upper spring housing and sliding sleeve adapter sleeve, sliding sleeve adapter sleeve and lower spring set, it is connected central canal and all has back-up ring and O to be connected with lower contact, pressure cap with lower contact with pressure cap, central canal with central canal, lower spring set to ensure sealing。
Described box cupling 1 car has female thread to be connected with top connection 2, top connection 2 has screw thread to be connected with pressure transmission piston bush 7, the outer car of pressure transmission piston bush 7 has screw thread to be connected with upper spring housing 13, upper spring housing 13 lower end car has screw thread to be connected with sliding sleeve adapter sleeve 16, sliding sleeve adapter sleeve 16 lower end inside is connected with being connected central canal 26 by screw thread, connecting central canal 26 to be threaded connection with central canal 29, central canal 29 lower end is provided with screw thread and is connected with lower contact 44。
Described pressure transmission piston cylinder 7 is provided with two symmetrical pressure-transmission tubes and puts into piston 10, piston 10 lower end snaps in described piston push-and-pull and overlaps in 11 grooves, piston push-and-pull set 11 is fixed with sliding sleeve central canal 14 by locking nail 12, overlaps on the downside of in the of 11 in piston push-and-pull and puts into spring 15 outside sliding sleeve central canal 14。
Being inserted in check valve cap 32 outside described central canal 29, make unidirectional bonnet 32 be fixed on central canal 29 by shear pin 35, on the downside of unidirectional bonnet 32, lower spring is put in the outside with central canal 2。
Being inserted in lower spring set 25 outside described sliding sleeve adapter sleeve 16, connection central canal 26, central canal 29 and lower contact 44, described lower spring set 25 is connected with pressure cap 39 by screw thread, and the external screw thread in lower contact 44 connects fixes pressure cap 39。
When opening annulus water injection passage, ground hydraulic-control pipeline is suppressed, piston 10 is promoted by the hole in the hole of described top connection 2 with pressure transmission piston bush 7, piston 10 promotes piston push-and-pull set 11 drive sliding sleeve central canal 14 to move down, when the hole of sliding sleeve central canal 14 overlaps with the hole of sliding sleeve connecting tube 16, annulus water injection passage is opened。By sliding sleeve adapter sleeve 16, connect the annulus access that central canal 26, central canal 29, unidirectional bonnet 32 and spring housing 25, pressure cap 39 are formed, it is achieved normal water filling。
During closedown annulus water injection passage, ground hydraulic-control pipeline pressure release, described upper spring 15 promotes piston push-and-pull set 11, and piston push-and-pull set 11 drive sliding sleeve central canals 14 move, and stagger in the hole of sliding sleeve central canal 14 and sliding sleeve connecting tube 16, annulus water injection pathway closure。
When annulus water injection passage opening failure, the mode can suppressed by annular space, open alternate channel, unidirectional bonnet 32 is acted on by the pore pressure power of described central canal 29, promote unidirectional bonnet 32 to move down standby waterflood path to open, by the annulus access that central canal 29, unidirectional bonnet 32 and spring housing 25, pressure cap 39 are formed, it is achieved alternate channel water filling。
When stopping water filling or water injection pressure less than strata pressure, lower spring 36 promotes and moves on unidirectional bonnet 32, and standby waterflood path is closed。
The foregoing is only preferred embodiment of the present utility model, be not used to limit the scope of the claims of the present utility model, other use the equivalence change of patent spirit of the present utility model, all should all belong to the scope of the claims of the present utility model。
Claims (7)
1. a novel annulus safety valve, it is characterized in that, including outer tube structure, inner tube structure, described outer tube structure includes the pressure transmission piston bush being sequentially connected with from top to bottom, upper spring housing, sliding sleeve adapter sleeve, lower spring set, described inner tube structure includes the sliding sleeve central canal, connection central canal, the central canal that are sequentially connected with from top to bottom, form upper annular space between the pressure transmission piston bush of described urceolus, upper spring housing and the sliding sleeve central canal of inner core, this installs in annular space hydraulic control annular space opening closure；Form lower annular space between lower spring set and the connection central canal of inner core, the central canal of described urceolus, standby annular space opening closure is installed in this lower annular space。
2. the novel annulus safety valve of one according to claim 1, it is characterised in that described pressure transmission piston bush, sliding sleeve central canal upper end are simultaneously connected with top connection, described lower spring set, central canal lower end are simultaneously connected with lower contact, described top connection upper end connection coupling；Described upper annular space and lower annular space are subject to the obstruct of sliding sleeve adapter sleeve not connected state each other mutually in the axial direction。
3. the novel annulus safety valve of one according to claim 1, it is characterized in that, described hydraulic control annular space opening closure includes piston, piston push-and-pull set, locking nail, upper spring, piston is installed in described pressure transmission piston bush, described piston push-and-pull set is positioned at piston, and piston push-and-pull set is fixed on sliding sleeve central canal by locking nail。
4. the novel annulus safety valve of one according to claim 3, it is characterised in that described pressure transmission piston bush offers the pressure transmission hole that axial two are symmetrical, the axially extending bore that the connection top connection of this pressure transmission hole upper end is offered, lower end is communicated to the piston in pressure transmission piston bush。
5. the novel annulus safety valve of one according to claim 1, it is characterized in that, described standby annular space opening closure includes unidirectional bonnet, shear pin and lower spring, described unidirectional bonnet is installed between lower spring set and central canal, described lower spring is connected to unidirectional bonnet lower end, and described unidirectional bonnet is fixed on central canal by shear pin, and the through hole of the lower annular space of connection radially is offered in central canal bottom, also installing pressure cap in lower annular space, lower spring lower end is connected on pressure cap。
6. the novel annulus safety valve of one according to claim 1, it is characterised in that be provided with between described sliding sleeve central canal and sliding sleeve connecting tube outer trough of belt back-up ring, middle trough of belt back-up ring, interior trough of belt back-up ring and O and formed packing group be connected guarantee seal。
7. the novel annulus safety valve of one according to claim 1, it is characterised in that described connection central canal has T-shaped packing to be connected guarantee sealing with central canal。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521053517.3U CN205330617U (en) | 2015-12-16 | 2015-12-16 | Novel annular space relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521053517.3U CN205330617U (en) | 2015-12-16 | 2015-12-16 | Novel annular space relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205330617U true CN205330617U (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521053517.3U Expired - Fee Related CN205330617U (en) | 2015-12-16 | 2015-12-16 | Novel annular space relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205330617U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804693A (en) * | 2015-12-16 | 2016-07-27 | 中国石油化工股份有限公司 | Annulus safety valve |
| CN111706295A (en) * | 2020-07-14 | 2020-09-25 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
-
2015
- 2015-12-16 CN CN201521053517.3U patent/CN205330617U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804693A (en) * | 2015-12-16 | 2016-07-27 | 中国石油化工股份有限公司 | Annulus safety valve |
| CN105804693B (en) * | 2015-12-16 | 2017-07-25 | 中国石油化工股份有限公司 | A kind of annulus safety valve |
| CN111706295A (en) * | 2020-07-14 | 2020-09-25 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
| CN111706295B (en) * | 2020-07-14 | 2021-03-23 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
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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: 20160622 Termination date: 20181216 |