CN2464930Y - Pneumatic and heat double-driving heat production packer - Google Patents
Pneumatic and heat double-driving heat production packer Download PDFInfo
- Publication number
- CN2464930Y CN2464930Y CN 01211451 CN01211451U CN2464930Y CN 2464930 Y CN2464930 Y CN 2464930Y CN 01211451 CN01211451 CN 01211451 CN 01211451 U CN01211451 U CN 01211451U CN 2464930 Y CN2464930 Y CN 2464930Y
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- CN
- China
- Prior art keywords
- heat
- central tube
- sealing
- pressure
- sealing shroud
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- Expired - Fee Related
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Abstract
The utility model relates to an air and heat double-driving heat-production packer, which is composed of a center pipe 1, a protecting cap 2, a sealing sleeve 3, a sheath 4, a heat sensitive sheet 5, a pressure ring 6, a top thread 7 and a sealing gasket 8. The middle of the center pipe 1 is provided with a cutting groove, the heat sensitive sheet 5 is arranged in the groove, and a through hole is arranged at the middle position of the center pipe 1. Because the inner part of the sealing sleeve of the utility model is provided with multiple heat sensitive sheets, the air and heat double-driving heat-production packer can achieve the function of sealing completely under the definite temperature and the pressure, has the advantages of reliable sealing and unsealing performance, simple structure, reasonable design and low cost, enhances the production efficiency of an oil well, and is suitable for the present popularization and application.
Description
The utility model relates to the downhole tool that uses on a kind of oilfield, the two moving thermal packers of particularly a kind of gas heat.
The thermal packer that use in existing oil field, usually because of the thermometal deflection is not enough, two ends helmet blow-by, sealing shroud insufficient strength, after packer was gone into the well, its sealing effectiveness was poor, and role in the time of can not reaching shut-in well has influenced the ordinary production of oil well.
The purpose of this utility model is to provide a kind of gas heat two moving thermal packers, changes the shape of thermometal, and the power that produces when making it that enough deflections and distortion be arranged has improved the sealing effectiveness of packer.
The purpose of this utility model is to realize like this, it is made up of central tube (1), helmet (2), sealing shroud (3), sheath (4), heat-sensitive sheet (5), pressure ring (6), jackscrew (7), sealing mat (8), there is grooving centre at central tube (1), in groove, place heat-sensitive sheet (5), and through hole is arranged in central tube (1) position intermediate, helmet (2) and central tube (1) welding, between helmet (2) and pressure ring (6), accompany sealing shroud (3), sealing shroud (3) is threaded with central tube (1), accompany sealing mat (8) therebetween, sealing shroud (3) is fixing by jackscrew (7).
Set: air pressure is through the pore at central tube (1) middle part, act on the sheath (4), and act on the inner surface of sealing shroud (3) through sheath (4), when air pressure at 3Mpa, temperature is more than 80 ℃ the time, sealing shroud (3) is because high temperature action produces elastic deformation, hardness descends, toughness improves, be subjected to thermal stretching, under the effect of thermometal (5) near the well arm because the air pressure of the air pressure of annular space and packer lower end sleeve pipe annular space is identical between central tube (1) and the sealing shroud (4), and more than between central tube (1) and the sealing shroud (4) pressure of thermometal, so make on the packer, the setting of casing annular space can not be communicated with, thereby plays the effect of shut-in well.
During work, down-hole air pressure is through the pore at central tube middle part, act on the sheath, and act on through sheath on the inner surface of sealing shroud, work as air pressure, temperature is under a stable condition, sealing shroud is because high temperature action produces elastic deformation, hardness descends, toughness improves, be subjected to thermal stretching, under the effect of thermometal near the borehole wall, because the air pressure of the air pressure of annular space and packer lower end sleeve pipe annular space is identical between central tube and the sealing shroud, and many pressure of thermometal between central tube and the sealing shroud, so make on the packer, the setting of casing annular space can not be communicated with, thereby plays the effect of shut-in well.
During deblocking, close oil well air pressure, temperature and descend, sealing shroud is owing to elastic deformation is recovered from sealing preceding shape, and thermometal is not owing to there being temperature to recover to set preceding shape, and deblocking.
The utility model is owing to adopted sealing shroud built-in many to heat-sensitive sheet, make the two moving thermal packers of gas heat be issued to the effect of sealing fully at uniform temperature, pressure, its sealing, deblocking are reliable, simple in structure, reasonable in design, processing cost is low, has improved the production efficiency of oil well, is well suited for on-the-spot applying.
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in the figure, the utility model is by central tube 1, helmet 2, sealing shroud 3, sheath 4, heat-sensitive sheet 5, pressure ring 6, jackscrew 7, sealing mat 8 is formed, three groovings are arranged in the centre of central tube 1, in groove, place three groups of 18 thermometal sheets 5, every group two-layer 6,60 ° of installations of dislocation between inner layer metal sheet and the skin, and position intermediate has φ 6.7 through holes below inner layer metal, central tube 1 and helmet 2 welding, length overall: 358mm, operating pressure: 17Mpa, maximum outside diameter: 152mm, set pressure: gas injection pressure adds thermometal pressure, minimum latus rectum: 60mm.When steam injection pressure at 17Mpa, the gas injection temperature is in the time of 300 ℃, casing pressure is zero.
Claims (3)
1, the two moving thermal packers of a kind of gas heat, it is by central tube (1), helmet (2), sealing shroud (3), sheath (4), heat-sensitive sheet (5), pressure ring (6), jackscrew (7), sealing mat (8) is formed, it is characterized in that: there is grooving the centre at central tube (1), in groove, place heat-sensitive sheet (5), and through hole is arranged in central tube (1) position intermediate, helmet (2) and central tube (1) welding, between helmet (2) and pressure ring (6), accompany sealing shroud (3), sealing shroud (3) is threaded with central tube (1), accompany sealing mat (8) therebetween, sealing shroud (3) is fixing by jackscrew (7).
2, the two moving thermal packers of gas heat according to claim 1, it is characterized in that: three groovings are arranged in the centre of central tube (1), in groove, place three groups 18 thermometal sheets (5), every group two-layer 6,60 ° of installations of dislocation between inner layer metal sheet and the skin, and position intermediate has φ 6.7 through holes below inner layer metal.
3, the two moving thermal packers of gas heat according to claim 1 is characterized in that: length overall: 358mm, and operating pressure: 17Mpa, maximum outside diameter: 152mm sets pressure: gas injection pressure adds thermometal pressure, minimum latus rectum: 60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01211451 CN2464930Y (en) | 2001-01-18 | 2001-01-18 | Pneumatic and heat double-driving heat production packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01211451 CN2464930Y (en) | 2001-01-18 | 2001-01-18 | Pneumatic and heat double-driving heat production packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2464930Y true CN2464930Y (en) | 2001-12-12 |
Family
ID=33630844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01211451 Expired - Fee Related CN2464930Y (en) | 2001-01-18 | 2001-01-18 | Pneumatic and heat double-driving heat production packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2464930Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555778B (en) * | 2009-05-18 | 2013-08-07 | 中国石油辽河油田钻采工艺研究院 | External packer of high temperature pipe |
| CN116856881A (en) * | 2023-09-04 | 2023-10-10 | 太原科技大学 | Bridge plug with embedded plugging structure and bridge plug setting method thereof |
-
2001
- 2001-01-18 CN CN 01211451 patent/CN2464930Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555778B (en) * | 2009-05-18 | 2013-08-07 | 中国石油辽河油田钻采工艺研究院 | External packer of high temperature pipe |
| CN116856881A (en) * | 2023-09-04 | 2023-10-10 | 太原科技大学 | Bridge plug with embedded plugging structure and bridge plug setting method thereof |
| CN116856881B (en) * | 2023-09-04 | 2023-11-17 | 太原科技大学 | Bridge plug with embedded plugging structure and bridge plug setting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |