CN203570293U - Locked slide sleeve seat - Google Patents
Locked slide sleeve seat Download PDFInfo
- Publication number
- CN203570293U CN203570293U CN201320760169.8U CN201320760169U CN203570293U CN 203570293 U CN203570293 U CN 203570293U CN 201320760169 U CN201320760169 U CN 201320760169U CN 203570293 U CN203570293 U CN 203570293U
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- CN
- China
- Prior art keywords
- slide sleeve
- opening
- sliding sleeve
- seat
- sleeve seat
- 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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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model discloses a locked slide sleeve seat. The upper end of the locked slide sleeve seat is provided with a slide sleeve seat cavity and a slide sleeve, wherein the slide sleeve seat cavity is formed by an upper joint and a lower joint through being connected via screw threads, the slide sleeve is arranged in the slide sleeve seat cavity, an inner chamfer angle for supporting a ball is arranged at an upper opening part of the slide sleeve, an outer chamfer angle is arranged at a lower opening part of the slide sleeve, sealing rings are respectively arranged between the outer peripheral surfaces near the upper opening and the lower opening of the slide sleeve and the inner peripheral surface of the upper joint, and a circumferential annular lock groove is formed in the outer peripheral surface at the upper part of the outer chamfer angle of the slide sleeve; a lower stop point step used for limiting the descending of the slide sleeve is arranged on the inner peripheral surface of the lower joint, an annular groove is formed between the upper joint and the lower joint, an opening lock ring is arranged in the annular groove, and the outer side of the opening lock ring is provided with a wave-shaped leaf spring. The locked slide sleeve seat has the beneficial effects that the slide sleeve enters the locked slide sleeve seat to plug an inner cavity of a lower pipe string; the slide sleeve realizes the position locking under the effect of a locked slide sleeve seat locking structure; the slide sleeve cannot generate the off-seat phenomenon during the large-emission inverse well-flushing operation.
Description
Technical field
The utility model relates to a kind of oil-gas mining downhole tool, especially relates to a kind of locking-type sleeve base for separate stratum fracfturing acidizing treatment.
Background technology
Sleeve base is the indispensable instrument that forms separate stratum fracfturing acidizing treatment pipe string.In construction, ball seat, on sliding sleeve, utilizes the pressure mode of spraining to cut sliding sleeve location shear pin, the descending pressure channel of opening construction pipe string and annular space and stratum of sliding sleeve, and ball and sliding sleeve enter sleeve base, stop up lower tube and gang up, and coordinate the power tools such as packer to implement layering.
Utilizing the former tubing string of separate stratum fracfturing acidifying to go into operation, is that producing well proceeds to a kind of turn model of production from measure, and the realization of this transformation needs large discharge capacity anti-flushing well that ball is washed out.After fracture acidizing, raffinate returns the same formation of row backwash operation.When conventional sleeve base carries out large discharge capacity backwash operation, occur that sometimes sliding sleeve is washed out the situation of sleeve base, owing to cannot going out well, so can cause bottom steel ball to wash out, even cause engineering accident.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of after sliding sleeve is taken a seat, and can utilize the locking-type sleeve base of latch-up structure locking sliding sleeve position.
For this reason, the technical scheme that the utility model adopts is: a kind of locking-type sleeve base, comprise the sleeve base cavity being formed by the top connection being threaded and lower contact and be arranged on the sliding sleeve in sleeve base cavity, upper shed place of described sliding sleeve is provided with interior chamfering, the lower opening of holding ball and is provided with outer chamfering, between near the outer peripheral face described sliding sleeve upper and lower opening and described top connection inner peripheral surface, be equipped with sealing ring, outside stating sliding sleeve, on the outer peripheral face on chamfering top, be provided with circumferential annular lock groove; On the inner peripheral surface of described lower contact, be provided with for limiting the descending lower dead center step of sliding sleeve, between described upper and lower joint, be formed with cannelure, in described cannelure, be provided with opening lock ring, in described opening lock ring outside, be provided with corrugated sheet spring.
At described opening lock ring inwall, be made as up big and down small broadening formation.
The beneficial effects of the utility model are: sliding sleeve enters locking-type sleeve base shutoff bottom pipe string inner chamber.Slide under the effect of locking-type sleeve base latch-up structure and realize locking position.While sliding over large discharge capacity anti-flushing well operation, can not go out a phenomenon.Simple and reasonable, stable performance.Construction application success rate is high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model locking-type sleeve base structure;
Fig. 2 is the utility model locking-type sleeve base split shed lock ring and corrugated sheet spring position schematic diagram.
In figure: 1. top connection, 2. ball, 3. sealing ring,
4. sliding sleeve, 5. sealing ring, 6. opening lock ring,
7. corrugated sheet spring, 8. lower contact.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figure 1 and Figure 2, comprise the sleeve base cavity being formed by the top connection 1 being threaded and lower contact 8 and be arranged on the sliding sleeve 4 in sleeve base cavity, top connection 1 is connected by regular screw threads with lower contact 8, sealing ring 5, at the connection of thread sealed sliding block set cavity of the two, forms locking-type sleeve base main body.Between near the outer peripheral face described sliding sleeve 4 upper and lower openings and described top connection inner peripheral surface, be equipped with sealing ring 3, sliding sleeve 4 upper open ends are provided with interior chamfering for holding ball 2, lower opening is provided with outer chamfering, on the outer peripheral face of stating the outer chamfering of sliding sleeve 4 top, is provided with circumferential annular lock groove; On the inner peripheral surface of described lower contact 8, be provided with for limiting the descending lower dead center step (figure does not mark) of sliding sleeve 4.Top connection 1 upper end is provided with petroleum oil threaded female screw thread, and lower contact 8 is provided with petroleum oil screw thread male thread.Corrugated sheet spring 7 and opening lock ring 6 are assemblied in the annular space forming between lower contact 8 and top connection 1, and corrugated sheet spring 7 is located at opening lock ring 6 outsides.Opening lock ring 6 inwalls are up big and down small broadening formation, and the internal diameter of opening lock ring 6 lower ends is less than the internal diameter of sleeve base body seal section.
The utility model locking-type sleeve base operating principle is as follows:
Sliding sleeve and ball enter locking-type sleeve base under hydraulic action, and the descending lower dead center step that terminates in lower contact completes sleeve base inner chamber and stops up.In this process, slide under thrust, force the broadening formation hatch lock ring resilience hole enlargement under corrugated sheet spring righting state, when sliding sleeve is descending while terminating in lower contact lower dead center step, opening lock ring enters sliding sleeve locked groove, and the undergauge shape that resiles, completes the locking position to sliding sleeve.In this sleeve base performance, can meet fracture acidizing construction requirement, simple in structure, sliding sleeve is taken a seat smoothly, and sealing is reliable, can guarantee to slide over the locking of anti-flushing well situation upper/lower positions.
The utility model locking-type sleeve base, can increase substantially and be constructed into power, reduces production costs.
Claims (2)
1. a locking-type sleeve base, it is characterized in that: comprise the sleeve base cavity being formed by the top connection being threaded (1) and lower contact (8) and be arranged on the sliding sleeve (4) in sleeve base cavity, upper shed place of described sliding sleeve (4) is provided with interior chamfering, the lower opening of holding ball (2) and is provided with outer chamfering, between near the outer peripheral face described sliding sleeve (4) upper and lower opening and described top connection inner peripheral surface, be equipped with sealing ring (3), outside stating sliding sleeve (4), on the outer peripheral face on chamfering top, be provided with circumferential annular lock groove; On the inner peripheral surface of described lower contact (8), be provided with for limiting the descending lower dead center step of sliding sleeve (4), between described upper and lower joint (1,8), be formed with cannelure, in described cannelure, be provided with opening lock ring (6), in described opening lock ring (6) outside, be provided with corrugated sheet spring (7).
2. locking-type sleeve base according to claim 1, is characterized in that: the inwall of described opening lock ring (6) forms up big and down small broadening formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320760169.8U CN203570293U (en) | 2013-11-26 | 2013-11-26 | Locked slide sleeve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320760169.8U CN203570293U (en) | 2013-11-26 | 2013-11-26 | Locked slide sleeve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570293U true CN203570293U (en) | 2014-04-30 |
Family
ID=50538027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320760169.8U Expired - Fee Related CN203570293U (en) | 2013-11-26 | 2013-11-26 | Locked slide sleeve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203570293U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257245A (en) * | 2015-10-12 | 2016-01-20 | 新疆罡拓能源科技有限公司 | Well completion machine tooth type slide sleeve tool |
| CN110043237A (en) * | 2019-05-31 | 2019-07-23 | 铁岭曲氏石油技术开发服务有限公司 | Plug-injection type sand blower of sliding sleeve and its control method |
-
2013
- 2013-11-26 CN CN201320760169.8U patent/CN203570293U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257245A (en) * | 2015-10-12 | 2016-01-20 | 新疆罡拓能源科技有限公司 | Well completion machine tooth type slide sleeve tool |
| CN105257245B (en) * | 2015-10-12 | 2017-07-04 | 新疆罡拓能源科技有限公司 | The tooth-like sliding sleeve instrument of completion machine |
| CN110043237A (en) * | 2019-05-31 | 2019-07-23 | 铁岭曲氏石油技术开发服务有限公司 | Plug-injection type sand blower of sliding sleeve and its control method |
| CN110043237B (en) * | 2019-05-31 | 2023-12-22 | 铁岭曲氏石油技术开发服务有限公司 | Plug-in type sliding sleeve sand blaster and control 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20191126 |