CN105221108A - Circulation slide sleeve - Google Patents
Circulation slide sleeve Download PDFInfo
- Publication number
- CN105221108A CN105221108A CN201510718294.6A CN201510718294A CN105221108A CN 105221108 A CN105221108 A CN 105221108A CN 201510718294 A CN201510718294 A CN 201510718294A CN 105221108 A CN105221108 A CN 105221108A
- Authority
- CN
- China
- Prior art keywords
- top connection
- ball seat
- lower contact
- pin
- slide 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.)
- Pending
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Abstract
The present invention relates to oilfield drilling and production technology field, particularly relate to a kind of circulation slide sleeve, comprise lower contact, top connection, ball seat, pin, metal o-ring and spheroid, the top of described lower contact is connected with the lower thread of described top connection, gap is left between the bottom ring week of top connection and described lower contact, described top connection is provided with through hole, described ball seat is inserted in described top connection, circular hole is provided with in the middle part of described ball seat, described circular hole is corresponding with described lead to the hole site, and the bottom of described ball seat is connected by the lower end of described pin with described top connection.Relative to prior art, this device can realize tubing seal, is convenient to aboveground operation, can recover voluntarily meanwhile, can recycle.
Description
Technical field
The present invention relates to oilfield drilling and production technology field, particularly relate to a kind of circulation slide sleeve.
Background technology
Oil well casing causes sleeve pipe to occur leakage phenomena because of reasons such as cementing quality, connecting thread, ground movement, corrosions, brings unfavorable factor to oil well measure construction and affects crude output.Once leakage situation appears in the non-payzone of oil well, must leakage points be determined before enforcement is repaired, now verify that the method for casing leakage point generally adopts packer, close oil jacket annular space at the above position of payzone, by sleeve pipe pressuring method, sleeve pipe is verified.Protect reservoir to protect during aboveground operation, preventing pollution, urgently needing to develop a kind of sliding sleeve can protect oil pipe.
Summary of the invention
The object of the invention is to the deficiency overcoming above-mentioned technology, and a kind of circulation slide sleeve is provided, can to protection reservoir, preventing pollution.
The present invention for achieving the above object, by the following technical solutions: a kind of circulation slide sleeve, comprise lower contact, top connection, ball seat, pin, metal o-ring and spheroid, the top of described lower contact is connected with the lower thread of described top connection, gap is left between the bottom ring week of top connection and described lower contact, described top connection is provided with through hole, described ball seat is inserted in described top connection, circular hole is provided with in the middle part of described ball seat, described circular hole is corresponding with described lead to the hole site, and the bottom of described ball seat is connected by the lower end of described pin with described top connection.Relative to prior art, this device can realize tubing seal, is convenient to aboveground operation,, can recover voluntarily meanwhile, can recycle, when spheroid does not enter, upper and lower joint is in connected state, and liquid can flow, when dropping into spheroid, be in sealing state, when pressure continues to increase, pin is cut off, spheroid and ball seat move down, and elliptical aperture staggers, and are formed and survey end sealing.When after the distress resolves injected, below strata pressure opens elliptical aperture higher than ball seat is up after fluid column pressure, and upper and lower joint is in connected state again, and liquid can flow.
Preferably, sealed by described metal o-ring between described top connection and described ball seat.Because shaft bottom situation is complicated, corrosivity is strong, adopts metal sealing can improve the application life of sealing ring.
The invention has the beneficial effects as follows: relative to prior art, this device can realize tubing seal, is convenient to aboveground operation,, can recover voluntarily meanwhile, can recycle, when spheroid does not enter, upper and lower joint is in connected state, and liquid can flow, when dropping into spheroid, be in sealing state, when pressure continues to increase, pin is cut off, spheroid and ball seat move down, and elliptical aperture staggers, and are formed and survey end sealing.When after the distress resolves injected, below strata pressure opens elliptical aperture higher than ball seat is up after fluid column pressure, and upper and lower joint is in connected state again, and liquid can flow.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is sealing state schematic diagram in the present invention;
Fig. 3 is released state schematic diagram in the present invention.
Detailed description of the invention
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing and preferred embodiment.As shown in Figure 1 to Figure 3, a kind of circulation slide sleeve, comprise lower contact 1, top connection 2, ball seat 3, pin 4, metal o-ring 5 and spheroid 6, the top of described lower contact is connected with the lower thread of described top connection, gap is left between the bottom ring week of top connection and described lower contact, described top connection is provided with through hole, described ball seat is inserted in described top connection, circular hole is provided with in the middle part of described ball seat, described circular hole is corresponding with described lead to the hole site, and the bottom of described ball seat is connected by the lower end of described pin with described top connection.Sealed by described metal o-ring between described top connection and described ball seat.Because shaft bottom situation is complicated, corrosivity is strong, adopts metal sealing can improve the application life of sealing ring.Relative to prior art, this device can realize tubing seal, is convenient to aboveground operation,, can recover voluntarily meanwhile, can recycle, when spheroid does not enter, upper and lower joint is in connected state, and liquid can flow, when dropping into spheroid, be in sealing state, when pressure continues to increase, pin is cut off, spheroid and ball seat move down, and elliptical aperture staggers, and are formed and survey end sealing.When after the distress resolves injected, below strata pressure opens elliptical aperture higher than ball seat is up after fluid column pressure, and upper and lower joint is in connected state again, and liquid can flow.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. a circulation slide sleeve, it is characterized in that: comprise lower contact, top connection, ball seat, pin, metal o-ring and spheroid, the top of described lower contact is connected with the lower thread of described top connection, gap is left between the bottom ring week of top connection and described lower contact, described top connection is provided with through hole, described ball seat is inserted in described top connection, circular hole is provided with in the middle part of described ball seat, described circular hole is corresponding with described lead to the hole site, and the bottom of described ball seat is connected by the lower end of described pin with described top connection.
2. circulation slide sleeve according to claim 1, is characterized in that: sealed by described metal o-ring between described top connection and described ball seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510718294.6A CN105221108A (en) | 2015-10-30 | 2015-10-30 | Circulation slide sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510718294.6A CN105221108A (en) | 2015-10-30 | 2015-10-30 | Circulation slide sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105221108A true CN105221108A (en) | 2016-01-06 |
Family
ID=54990332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510718294.6A Pending CN105221108A (en) | 2015-10-30 | 2015-10-30 | Circulation slide sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105221108A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878036A (en) * | 2020-08-05 | 2020-11-03 | 中石化石油工程技术服务有限公司 | Multifunctional fluid one-way injection device and use method thereof |
-
2015
- 2015-10-30 CN CN201510718294.6A patent/CN105221108A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878036A (en) * | 2020-08-05 | 2020-11-03 | 中石化石油工程技术服务有限公司 | Multifunctional fluid one-way injection device and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160106 |