CN204312025U - A kind of outer sliding sleeve can closing switch - Google Patents
A kind of outer sliding sleeve can closing switch Download PDFInfo
- Publication number
- CN204312025U CN204312025U CN201420691947.7U CN201420691947U CN204312025U CN 204312025 U CN204312025 U CN 204312025U CN 201420691947 U CN201420691947 U CN 201420691947U CN 204312025 U CN204312025 U CN 204312025U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- outer sliding
- top connection
- lower contact
- tube wall
- 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
Abstract
The utility model discloses a kind of outer sliding sleeve can closing type switch, be made up of top connection, outer sliding sleeve, spring, lower contact, top connection is threaded with lower contact, conical surface ball seat is provided with in the central through hole of top connection, the outer tube wall of top connection is provided with stepped outer shoulder, in the middle part of it, tube wall has fluid hole, bottom tube wall has pressure transmission hole; Be provided with circular table in the middle part of the inner tubal wall of outer sliding sleeve, its top has outage, and outer sliding sleeve is socketed on the outer tube wall of top connection and lower contact, the lower contact of the lower surface of sliding sleeve is set with spring, and is fixed by adjustable ring.The utility model provides one not to be stressed and tubing string inner impact affects, seals reliable outer sliding sleeve switch, and separate stratum fracfturing, separate layer acid treatment are constructed complete, pull steel ball out, can not the water filling of lift pipe string direct layering or oil production by layer.
Description
Technical field
The utility model relates to oil field well instrument, and particularly a kind of outer sliding sleeve can closing switch.
Background technology
Sliding sleeve switch is one of downhole tool important in oil, gas, well separate stratum fracfturing, acidizing treatment operation, and conventional closed sliding sleeve switch is made up of overcoat, inner sliding sleeve, spring.When separate stratum fracfturing, acidizing treatment, pass through pitching, Compress Spring suppressed by oil pipe, inner sliding sleeve is descending, switch opens, after construction, inner sliding sleeve resets closedown under spring force, can direct layering water filling or oil production by layer, but in separate layer water injection string test process, because inner sliding sleeve is placed in overcoat, reduce the interior latus rectum of running string, tester is when by cutting out sliding sleeve switch, clash into inner sliding sleeve, inner sliding sleeve produces and reciprocatingly slides in overcoat, causes seal failure, tubing string is missed, and causes separate injection tubing string to lose efficacy.
Utility model content
The purpose of this utility model overcomes existing sliding sleeve switch inner sliding sleeve tested person instrument of closing to clash into, and the defect of seal failure, provides one not affect by tubing string inner impact, and sealing reliable outer sliding sleeve can closing switch.
The utility model is made up of top connection, outer sliding sleeve, spring, lower contact, top connection is threaded with lower contact, is provided with conical surface ball seat in the central through hole of top connection, and the outer tube wall of top connection is provided with stepped outer shoulder, in the middle part of it, tube wall has fluid hole, bottom tube wall has pressure transmission hole; Be provided with circular table in the middle part of the inner tubal wall of outer sliding sleeve, its top has outage, and outer sliding sleeve is socketed on the outer tube wall of top connection and lower contact, the lower contact of the lower surface of sliding sleeve is set with spring, and is fixed by adjustable ring.
In the middle part of described outer sliding sleeve inner tubal wall, the internal diameter of circular table is less than the external diameter of lower contact upper end, and the internal diameter of outer sliding sleeve lower end is greater than the external diameter of lower contact upper end.
Between described outer sliding sleeve lower end and the bonding surface of lower contact upper end, O-ring seal is installed.
Between the fluid hole upper and lower both sides outer tube wall of described top connection and outer sliding sleeve, O-ring seal is installed.
The beneficial effects of the utility model are, provide one not to be stressed and the impact of tubing string inner impact, seal reliable outer sliding sleeve switch, separate stratum fracfturing, separate layer acid treatment are constructed complete, pull steel ball out, can not the water filling of lift pipe string direct layering or oil production by layer.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Detailed description of the invention
With reference to accompanying drawing 1, the utility model is made up of top connection 1, outer sliding sleeve 2, spring 10, lower contact 12, top connection 1 is threaded with lower contact 12, conical surface ball seat 6 is provided with in the central through hole of top connection 1, the outer tube wall of top connection 1 is provided with stepped outer shoulder, tube wall has fluid hole 5 in the middle part of it, bottom tube wall has pressure transmission hole 8; Be provided with circular table in the middle part of the inner tubal wall of outer sliding sleeve 2, its top has outage 3, and outer sliding sleeve 2 is socketed in top connection 1 with on the outer tube wall of lower contact 12, the lower contact 12 of the lower surface of sliding sleeve 2 is set with spring 10, and is fixed by adjustable ring 11.
In the middle part of described outer sliding sleeve 2 inner tubal wall, the internal diameter of circular table is less than the external diameter of lower contact 12 upper end, and the internal diameter of outer sliding sleeve 2 lower end is greater than the external diameter of lower contact 12 upper end.
Between the bonding surface of described outer sliding sleeve 2 lower end and lower contact 12 upper end, O-ring seal 9 is installed.
Between fluid hole about the 5 both sides outer tube wall of described top connection 1 and outer sliding sleeve 2 bonding surface, O-ring seal 4, O-ring seal 7 are installed.
The utility model is connected on tubing string, under enter projected depth, under the elastic force of spring 10, outer sliding sleeve 2 moves up, and the fluid hole 5 of top connection 1 is misplaced with the outage 3 of sliding sleeve 2, and switch is in closed condition, when need open switch, salvagable steel ball is dropped into from well head, steel ball falls to being sitting on the conical surface ball seat 6 in top connection 1 central through hole, tubing string inside is divided into two sections, suppressed by oil pipe, steel ball upper pressure is greater than steel ball low pressure, pressure is passed to the upper surface of annular shoulder in the middle part of outer sliding sleeve 2 by pressure liquid through the fluid hole 5 of top connection 1, overcome spring 10 elastic force, promote outer sliding sleeve 2 descending, when the outage 3 on outer sliding sleeve 2 is communicated with the fluid hole 5 in top connection 1, oil liquid in pipe is through fluid hole 5, outage 3 enters oil jacket annular space, implement separate stratum fracfturing, acidizing treatment.By well head releasing liquid pressure after construction, outer sliding sleeve 2 moves up return under the effect of spring 10, and the fluid hole 5 of top connection 1 is misplaced with the outage 3 of sliding sleeve 2, and switch is in closed condition again, pull steel ball out, the not water filling of lift pipe string direct layering or oil production by layer can be realized.
Claims (4)
1. an outer sliding sleeve can closing switch, be made up of top connection (1), outer sliding sleeve (2), spring (10), lower contact (12), it is characterized in that: top connection (1) is threaded with lower contact (12), conical surface ball seat (6) is provided with in the central through hole of top connection (1), the outer tube wall of top connection (1) is provided with stepped outer shoulder, in the middle part of it, tube wall has fluid hole (5), bottom tube wall has pressure transmission hole (8); Circular table is provided with in the middle part of the inner tubal wall of outer sliding sleeve (2), its top has outage (3), outer sliding sleeve (2) is socketed in top connection (1) with on the outer tube wall of lower contact (12), the lower contact (12) of the lower surface of sliding sleeve (2) is set with spring (10), and is fixed by adjustable ring (11).
2. a kind of outer sliding sleeve according to claim 1 can closing switch, it is characterized in that: in the middle part of outer sliding sleeve (2) inner tubal wall, the internal diameter of circular table is less than the external diameter of lower contact (12) upper end, the internal diameter of outer sliding sleeve (2) lower end is greater than the external diameter of lower contact (12) upper end.
3. a kind of outer sliding sleeve according to claim 1 and 2 can closing switch, it is characterized in that: be provided with O-ring seal (9) between the bonding surface of outer sliding sleeve (2) lower end and lower contact (12) upper end.
4. a kind of outer sliding sleeve according to claim 1 and 2 can closing switch, it is characterized in that: the fluid hole (5) of described top connection (1) is provided with O-ring seal between both sides outer tube wall and outer sliding sleeve (2) bonding surface up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420691947.7U CN204312025U (en) | 2014-11-18 | 2014-11-18 | A kind of outer sliding sleeve can closing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420691947.7U CN204312025U (en) | 2014-11-18 | 2014-11-18 | A kind of outer sliding sleeve can closing switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204312025U true CN204312025U (en) | 2015-05-06 |
Family
ID=53134347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420691947.7U Expired - Fee Related CN204312025U (en) | 2014-11-18 | 2014-11-18 | A kind of outer sliding sleeve can closing switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204312025U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345479A (en) * | 2017-07-21 | 2017-11-14 | 中国石油天然气股份有限公司 | Steam injection string |
| CN110005372A (en) * | 2019-05-21 | 2019-07-12 | 唐山冀东石油机械有限责任公司 | Mechanical repeat switch sliding sleeve |
| CN110017119A (en) * | 2019-05-21 | 2019-07-16 | 唐山冀东石油机械有限责任公司 | Hydraulic repeat switch device |
| CN110130855A (en) * | 2019-07-02 | 2019-08-16 | 陕西延长石油(集团)有限责任公司研究院 | A kind of switchable sliding sleeve of pressure break full-bore and its application method |
-
2014
- 2014-11-18 CN CN201420691947.7U patent/CN204312025U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345479A (en) * | 2017-07-21 | 2017-11-14 | 中国石油天然气股份有限公司 | Steam injection string |
| CN110005372A (en) * | 2019-05-21 | 2019-07-12 | 唐山冀东石油机械有限责任公司 | Mechanical repeat switch sliding sleeve |
| CN110017119A (en) * | 2019-05-21 | 2019-07-16 | 唐山冀东石油机械有限责任公司 | Hydraulic repeat switch device |
| CN110017119B (en) * | 2019-05-21 | 2024-01-26 | 唐山冀东石油机械有限责任公司 | Hydraulic repeating switch device |
| CN110005372B (en) * | 2019-05-21 | 2024-01-26 | 唐山冀东石油机械有限责任公司 | Sliding sleeve for mechanical repeated switch |
| CN110130855A (en) * | 2019-07-02 | 2019-08-16 | 陕西延长石油(集团)有限责任公司研究院 | A kind of switchable sliding sleeve of pressure break full-bore and its application method |
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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: 20150506 Termination date: 20191118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |