CN203394438U - Annulus safety valve for electric pump - Google Patents
Annulus safety valve for electric pump Download PDFInfo
- Publication number
- CN203394438U CN203394438U CN201320485302.3U CN201320485302U CN203394438U CN 203394438 U CN203394438 U CN 203394438U CN 201320485302 U CN201320485302 U CN 201320485302U CN 203394438 U CN203394438 U CN 203394438U
- Authority
- CN
- China
- Prior art keywords
- valve
- safety valve
- electric pump
- slide
- adapter 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 an annulus safety valve for an electric pump. The safety valve is composed of an upper connector (1), a nut (2), a spring (3), a valve rod (4), a connection sleeve (7), a sliding valve (8) and a lower connector (12). The upper connector (1) is sequentially connected with the connection sleeve (7) and the lower connector (12). The nut (2), the spring (3) and the valve rod (4) are sequentially installed in the upper connector (1) and an inner cavity of the connection sleeve (7). The valve rod (4) in the inner cavity of the connection sleeve (7) is connected with the sliding valve (8), and a balance hole B is formed in the sliding valve (8). The safety valve can achieve the effects of sealing the oil sleeve annulus area, discharging sleeve gas and conducting circulation well control under emergent conditions, and effectively prevents blowout or overflowing.
Description
Technical field
The utility model relates to a kind of oil field development downhole safety control instrument, particularly a kind of electric pump well annulus safety valve.
Background technology
At present, existing marine electric pump well annulus safety valve, although coordinate with electric pump packer, can play the annular space (hereinafter to be referred as oil jacket annular space) in case of emergency sealing between oil pipe and sleeve pipe, the effect of putting casing gas and circulation kill-job, but there is following problem: 1.Dang bottom pressure is during higher than upper pressure, it is higher or have the phenomenon of not opening that safety valve is opened pressure, affects crude oil production; 2. because valve body is taper, adopt taper upper thread contact form to seal, when circulation well cleanup flow is larger, valve body and valve seat are vulnerable to erosion or damage, cause blow-by, affect reliability.For this reason, the present invention adopts unique texture design to overcome above shortcoming, has met marine electric pump well production requirement.
Utility model content
For the above-mentioned defect of prior art, the technical problems to be solved in the utility model is to provide a kind of electric pump well annulus safety valve, realizes safe opening and closes, and prevents blowout or overflow.
For solving the problems of the technologies described above, the utility model electric pump well is comprised of top connection 1, nut 2, spring 3, valve rod 4, adapter sleeve 7, slide-valve 8 and lower contact 12 with annulus safety valve, and above-mentioned top connection 1 is threaded with adapter sleeve 7, lower contact 12 in turn; In top connection 1 and adapter sleeve 7 inner chambers, nut 2, spring 3 and valve rod 4 are installed successively; In adapter sleeve 7 inner chambers, valve rod 4 is threaded with slide-valve 8, and above-mentioned slide-valve 8 is provided with balance pipe B.
Above-mentioned balance pipe B is arranged on slide-valve 8 step places.
Above-mentioned balance pipe B is arranged on slide-valve 8 paths.
Above-mentioned balance pipe B is inclined hole.
Above-mentioned balance pipe B is straight hole.
Sealing ring 1 and sealing ring 26 are set between above-mentioned top connection 1 and adapter sleeve 7; Sealing ring 39, O circle 1 and O circle 2 11 are set between above-mentioned adapter sleeve 7 and lower contact 12.
Compare with present technical scheme, the utility model electric pump well has the following advantages with annulus safety valve tool: when safety valve bottom pressure is higher than controlled pressure Bu Shou bottom, upper pressure Shi， ground pressure influence, safety valve ratio is easier to open; Valve body is sleeve type, and when circulation well cleanup amount is larger, valve body is subject to damage not also, has long-term reliability; During circulation well cleanup, flushing fluid does not contact with valve rod, can not produce loosening or obscission.
Accompanying drawing explanation
Fig. 1 is the structural representation of annulus safety valve for the utility model electric pump well
Wherein: 1 is that top connection, 2 is that nut, 3 is that spring, 4 is that valve rod, 5 is that sealing ring one, 6 is that sealing ring two, 7 is that adapter sleeve, 8 is that slide-valve, 9 is that sealing ring three, 10 is that lower contact, A are that aperture one, B are that balance pipe, C are aperture two for O encloses one, 11 for O encloses two, 12;
Fig. 2 is pit shaft instance graph;
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.
As shown in Figure 1, the utility model electric pump well consists of top connection 1, nut 2, spring 3, valve rod 4, sealing ring 1, sealing ring 26, adapter sleeve 7, slide-valve 8, sealing ring 39, O circle 1, O circle 2 11 and lower contact 12 with annulus safety valve, and top connection 1 is threaded with adapter sleeve 7, lower contact 12 in turn; Top connection 1 and nut 2, spring 3 and the valve rod 4 of being threaded in turn in adapter sleeve 7 inner chambers; In adapter sleeve 7 inner chambers, valve rod 4 is threaded with slide-valve 8; In lower contact 12 inner chambers, be designed with O circle 1 and O circle 2 11, coordinate the opening and closing that can realize safety valve with slide-valve 8.Top connection 1 top is provided with and connects the connecting hole that pipeline is controlled on ground.
Safety valve is opened: when hydraulic oil injects by top connection 1 from upper end, in the annular seal space that adapter sleeve 7 and valve rod 4 form (hereinafter to be referred as annular seal space), when hydraulic oil acts on pressure on valve rod 4 and is greater than the elastic force of spring, valve rod 4 moves down with the assembly of slide-valve 8, the step place that arrives lower contact 12 stops, now align and be communicated with C hole in A hole, realizes the unlatching of safety valve, and the gas in oil jacket annular space or liquid can enter packer top thus.
Safety valve cuts out: during hydraulic fluid pressure in removing annular seal space, valve rod 4 moves up under the effect of the elastic force of spring with the assembly of slide-valve 8, makes A hole turn back to position shown in Fig. 1, and safety valve cuts out.
As shown in Figure 2, before going into the well, in annular space between oil pipe and sleeve pipe, first annulus safety valve is connected with packer, again liquid controling pipe line is connected with the connecting hole of annulus safety valve top connection 1, liquid controling pipe line is suppressed, and force value is the summation of 21MPa and shut-in pressure, voltage stabilizing 30 minutes, observe pressure without after leaking, normal with pressure being lowered to.
After completion, when needs are closed annular space, by the drainage of liquid controling pipe line pressure to 0MPa, slide-valve 8 under 4 effects of spring 3, valve rod, homing, annulus safety valve is closed, and plays safeguard protection effect.
During work, liquid controling pipe line is suppressed, and force value is the summation of 21MPa and shut-in pressure, and is stabilized in this pressure, keeps annulus safety valve open mode, now can realize functions such as putting casing gas or circulation well cleanup, kill-job.Also can smooth opening when guaranteeing that slide-valve 8 bears high pressure in bottom, on slide-valve 8, be provided with balance pipe B, balance pipe B makes downforce on slide-valve 8 reach balance, and safety valve is more easily opened.There is balance pipe B, fluid flows only by the A hole on slide-valve 8, the C hole in lower contact 12, do not contact with valve rod 4, effectively prevented that slide-valve 8 and valve rod 4 from producing loosening or obscission when larger because of fluid flow, balance pipe B can be positioned at step place, also can be positioned at slide-valve 8 path Shang， holes can be inclined hole, straight hole.
Claims (6)
1. an electric pump well annulus safety valve, by top connection (1), nut (2), spring (3), valve rod (4), adapter sleeve (7), slide-valve (8) and lower contact (12), formed, it is characterized in that: described top connection (1) is threaded with adapter sleeve (7), lower contact (12) in turn; In top connection (1) and adapter sleeve (7) inner chamber, nut (2), spring (3) and valve rod (4) are installed successively; In adapter sleeve (7) inner chamber, valve rod (4) is threaded with slide-valve (8), and described slide-valve (8) is provided with balance pipe B.
2. electric pump well annulus safety valve according to claim 1, is characterized in that: described balance pipe B is arranged on slide-valve (8) step place.
3. electric pump well annulus safety valve according to claim 1, is characterized in that: described balance pipe B is arranged on slide-valve (8) path.
4. according to the electric pump well annulus safety valve described in claims 1 to 3 any one, it is characterized in that: described balance pipe B is inclined hole.
5. according to the electric pump well annulus safety valve described in claims 1 to 3 any one, it is characterized in that: described balance pipe B is straight hole.
6. electric pump well annulus safety valve according to claim 1, is characterized in that: sealing ring one (5) and sealing ring two (6) are set between described top connection (1) and adapter sleeve (7); Sealing ring three (9), O circle one (10) and O circle two (11) are set between described adapter sleeve (7) and lower contact (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485302.3U CN203394438U (en) | 2013-08-09 | 2013-08-09 | Annulus safety valve for electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485302.3U CN203394438U (en) | 2013-08-09 | 2013-08-09 | Annulus safety valve for electric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394438U true CN203394438U (en) | 2014-01-15 |
Family
ID=49905974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320485302.3U Expired - Fee Related CN203394438U (en) | 2013-08-09 | 2013-08-09 | Annulus safety valve for electric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394438U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2733345C1 (en) * | 2020-04-14 | 2020-10-01 | Общество С Ограниченной Ответственностью "Оклэс Технолоджиз" | Downhole device for gas discharge |
| CN111927391A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Safety valve used in oil pipe and working method thereof |
-
2013
- 2013-08-09 CN CN201320485302.3U patent/CN203394438U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2733345C1 (en) * | 2020-04-14 | 2020-10-01 | Общество С Ограниченной Ответственностью "Оклэс Технолоджиз" | Downhole device for gas discharge |
| CN111927391A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Safety valve used in oil pipe and working method thereof |
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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: 20140115 Termination date: 20210809 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |