CN201650209U - Automatic shutdown switch for cementing of horizontal well - Google Patents
Automatic shutdown switch for cementing of horizontal well Download PDFInfo
- Publication number
- CN201650209U CN201650209U CN2010200150769U CN201020015076U CN201650209U CN 201650209 U CN201650209 U CN 201650209U CN 2010200150769 U CN2010200150769 U CN 2010200150769U CN 201020015076 U CN201020015076 U CN 201020015076U CN 201650209 U CN201650209 U CN 201650209U
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- CN
- China
- Prior art keywords
- outer tube
- switch
- sliding sleeve
- cementing
- horizontal well
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- Expired - Lifetime
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Abstract
The utility model relates to an automatic shutdown switch for cementing of a horizontal well. The automatic shutdown switch comprises an outer tube, an inner tube, a spring, a pin and a sliding sleeve switch; a liquid drain hole and a liquid outlet hole are respectively formed at the middle part of the outer tube, an inner cavity is formed inside the outer tube, and a liquid inlet hole is formed in the middle of the inner tube; the outer tube is connected with the inner tube through threads; a sliding seal is adopted between the outer tube and the inner tube; the spring and the sliding sleeve switch are respectively positioned in the inner cavity, one end of the spring is fixed with the outer tube, and the other end of the spring is fixed with the sliding sleeve switch; the sliding sleeve switch is connected with the outer tube via the pin; and the sliding sleeve switch respectively adopts a sliding seal relationship with the inner tube and the outer tube. The utility model has the advantages that the automatic shutdown switch for cementing of the horizontal well can fulfill the function of automatic opening and closing during the well cementing operation without mechanical assistance; and the automatic shutdown switch for cementing of the horizontal well is simple in structure, convenient for construction operation and high in reliability.
Description
Technical field
The utility model relates to the improvement that switch is closed in horizontal well cementing that a kind of oil well completion uses automatically.
Background technology
In the oil field development application of horizontal well more and more widely, the level of horizontal well completion tool technique also improves gradually.Sizing collar commonly used carries out the stage cementing operation in the horizontal cementing, and sizing collar adopts the interior cover motion of hydraulic-driven to realize opening closing motion, but the situation that normal appearance can't be closed or be not closed completely in the course of action has been brought inconvenience to well cementing operation.Newly-designed horizontal well cementing is closed switch automatically and utilize the automatic open and close of cement paste pressure in the cementing process, need not extra mechanical assistance, and extremely remarkable advantages is arranged in well cementing operation, and is significant in oil field development.
Summary of the invention
Sizing collar commonly used carries out the stage cementing operation in the horizontal cementing, but sizing collar adopts the interior cover motion of hydraulic-driven to realize switch motion, is prone to the phenomenon that can't close or be not closed completely, has brought inconvenience to well cementing operation.The purpose of this utility model is in order to overcome the problems referred to above, to close switch automatically for the scene provides a kind of horizontal well cementing, can realize automatic open and close in well cementing operation, it is auxiliary that it need not other instruments, simple in structure, easy and simple to handle, significant to simplifying the well shaft fixing technology process.
The utility model is achieved in that described horizontal well cementing closes switch automatically, comprises outer tube, interior pipe, spring, pin, sliding sleeve switch.There are outage, fluid hole in outer tube outer surface middle part, and there is inner chamber at the inner surface middle part, and interior Guan Yiduan has screw thread, and the middle part has inlet opening to be communicated with outer tube bore.Outer tube is connected with Internal Pipe Thread.Adopt slipper seal between outer tube and the interior pipe.Spring and sliding sleeve switch are arranged in the inner chamber between outer tube and pipe, and spring one end and outer tube are fixed, and the other end and sliding sleeve switch are fixed.Sliding sleeve switch is connected by pin with outer tube.All adopt slipper seal between sliding sleeve switch and interior pipe, the outer tube.Under the original state, sliding sleeve switch blocks fluid hole.This instrument is with after putting in place under the completion tubular string, and well cementing operation begins, and cement paste is entered by the inlet opening on the interior pipe and acts on the sliding sleeve switch, after pressure raises gradually and arrives starting pressure, pin is cut off, and sliding sleeve switch moves spring compression, and intracavity liquid is flowed out by outage.At this moment, inlet opening is communicated with fluid hole, and cement paste enters annular space between the sleeve pipe and the borehole wall.After well cementation finished, sliding sleeve switch was return initial position under spring action, inlet opening and fluid hole are separated, and cement paste solidifies in annular space, and the well cementation process finishes.
Advantage of the present utility model is:
1) the horizontal well cementing is closed switch automatically and be need not mechanical assistance just can realize automatic open and close function in well cementing operation;
2) to close construction of switch automatically simple in the horizontal well cementing, and construction operation is convenient, simplifies flow chart, the reliability height.
Description of drawings
The structural representation of switch is closed in accompanying drawing 1 horizontal well cementing automatically.
Pipe 3 springs 4 pins 5 sliding sleeve switches in 1 outer tube 2
The specific embodiment
Now the utility model will be further described in conjunction with Figure of description.
As shown in Figure 1, there is screw thread at outer tube 1 two ends, and there are outage, fluid hole in the middle part, and there is inner chamber inside.Interior pipe 2 one ends have the middle part that inlet opening is arranged.Outer tube 1 is threaded with interior pipe 2 and adopts slipper seal.Spring 3 and sliding sleeve switch 5 are arranged in inner chamber, and spring 3 one ends and outer tube are fixed, and the other end and sliding sleeve switch 5 are fixing.Sliding sleeve switch 5 and outer tube 1 are connected by pin.All adopt slipper seal between sliding sleeve switch 5 and interior pipe 2, the outer tube 1.Under the original state, sliding sleeve switch 5 blocks fluid hole.
This instrument is with after putting in place under the completion tubular string, cement paste is entered by the inlet opening on the interior pipe 2 and acts on the sliding sleeve switch 5 in the well cementing operation, and after pressure raise gradually and arrives starting pressure, pin 4 was cut off, sliding sleeve switch 5 is with spring compression, and intracavity liquid is flowed out by outage.At this moment, inlet opening is communicated with fluid hole, and cement paste enters annular space between the sleeve pipe and the borehole wall.After well cementation finished, sliding sleeve switch 5 was return initial position under spring 3 effects, inlet opening and fluid hole are separated, and cement paste solidifies in annular space, and the well cementation process finishes.
Claims (3)
1. switch is closed in the horizontal well cementing automatically, it is to be made of outer tube [1], interior pipe [2], spring [3], pin [4], sliding sleeve switch [5], it is characterized in that: there is screw thread at outer tube [1] two ends, and there are outage and fluid hole in outer tube [1] external surface middle part, and there is inner chamber at the inner surface middle part; Interior pipe [2] one ends have screw thread, and the middle part has inlet opening to be communicated with outer tube [1] inner chamber; Spring [3] and sliding sleeve switch [5] are in the inner chamber between outer tube [1] and interior pipe [2].
2. switch is closed in horizontal well cementing as claimed in claim 1 automatically, it is characterized in that: adopt slipper seal between outer tube [1] and the interior pipe [2].
3. switch is closed in horizontal well cementing as claimed in claim 1 automatically, it is characterized in that: sliding sleeve switch [5] and outer tube [1], interior pipe all adopt slipper seal between [2].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200150769U CN201650209U (en) | 2010-01-15 | 2010-01-15 | Automatic shutdown switch for cementing of horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200150769U CN201650209U (en) | 2010-01-15 | 2010-01-15 | Automatic shutdown switch for cementing of horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201650209U true CN201650209U (en) | 2010-11-24 |
Family
ID=43115441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200150769U Expired - Lifetime CN201650209U (en) | 2010-01-15 | 2010-01-15 | Automatic shutdown switch for cementing of horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201650209U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206189A (en) * | 2013-03-01 | 2013-07-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Timing automatic cement feeding mechanism |
| CN108643859A (en) * | 2018-03-27 | 2018-10-12 | 中国石油天然气股份有限公司 | Bleeder |
| CN112761577A (en) * | 2019-10-21 | 2021-05-07 | 中石化石油工程技术服务有限公司 | Non-reducing drilling plug-free cementing device and method for oil well of oil field |
-
2010
- 2010-01-15 CN CN2010200150769U patent/CN201650209U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206189A (en) * | 2013-03-01 | 2013-07-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Timing automatic cement feeding mechanism |
| CN103206189B (en) * | 2013-03-01 | 2016-03-16 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Timing automatic Tou Hui mechanism |
| CN108643859A (en) * | 2018-03-27 | 2018-10-12 | 中国石油天然气股份有限公司 | Bleeder |
| CN112761577A (en) * | 2019-10-21 | 2021-05-07 | 中石化石油工程技术服务有限公司 | Non-reducing drilling plug-free cementing device and method for oil well of oil field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150914 Address after: 100029 Beijing Chaoyang District Hui Xin a No. twelve layer 6 Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Patentee after: Drilling Well Technology Institute, Shengli Petroleum Engineering Co., Ltd., SINOPEC Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Well-Drilling Technology Inst., Shengli Petroleum Administration, SINOPEC |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |