CN2740770Y - Automatic compensation low-temperature setting thermal recovery packer - Google Patents
Automatic compensation low-temperature setting thermal recovery packer Download PDFInfo
- Publication number
- CN2740770Y CN2740770Y CN 200420011356 CN200420011356U CN2740770Y CN 2740770 Y CN2740770 Y CN 2740770Y CN 200420011356 CN200420011356 CN 200420011356 CN 200420011356 U CN200420011356 U CN 200420011356U CN 2740770 Y CN2740770 Y CN 2740770Y
- Authority
- CN
- China
- Prior art keywords
- nut
- automatic compensation
- packer
- sealing
- central tube
- 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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- 238000011084 recovery Methods 0.000 title abstract 3
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 230000001681 protective effect Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model provides an automatic compensation low temperature seat that steam injection exploitation viscous crude was used seals packer, include: lower clutch, flexible pipe, nut, seal cover, power spare, center tube, sheath, sealed pad, pressure pad, nut and coupling, wherein: the lower joint is connected with a telescopic pipe, a nut is connected with a central pipe, a power piece is connected with the central pipe, a sealing sleeve is connected with the central pipe through a protective sleeve, the telescopic pipe is connected with the nut, the sealing sleeve, the power piece, the central pipe and the protective sleeve through a sealing pad and a pressing pad through stress generated after the sealing pad is deformed by screwing the nut through threads, and the telescopic pipe is connected with a coupling. The utility model discloses a thermal recovery packer's setting temperature is low (120 supplyes 150 ℃), and the setting time is short (15 minutes), need not use with the compensator is supporting in the pit, has reduced workman's intensity of labour and oil recovery cost on the well.
Description
Technical field
The utility model relates to the thermal packer that a kind of exploitation via steam injection viscous crude is used.
Background technology
Existing thermal packer mainly contains two kinds of heat expansion type and thermometal formulas, heat expansion type packer such as Chinese patent CN2204851Y, CN2078793U and CN2119498U are disclosed, its explosive payload is difficult for grasping, too much easily block also, burst sealing surface, very fewly do not set, and need with the supporting use of down-hole telescopic compensator; Thermometal formula packer such as Chinese patent CN2237714Y and CN1134499A are disclosed, its bimetallic deflection is less, serviceability temperature is difficult for too high, and it is bad that this packer secondary sets effect, also needs and the supporting use of down-hole telescopic compensator simultaneously, this in addition packer central tube middle part is drilled with aperture, when the gas injection temperature too high, when gas injection rate is excessive, fragile seal, during seal ruptures, the bimetal leaf of packer inside exposes easy Ka Jing.Other thermal packer such as Chinese patent CN87210515U, CN2454532Y, CN2509316Y etc. are disclosed, all exist set temperature height (200 ℃), set the time long (20 minutes) or need with the matching used problem of down-hole telescopic compensator.
Summary of the invention
The utility model aims to provide and a kind ofly sets that temperature is low, the time that sets is short and do not need and the matching used thermal packer of down-hole expansion loop.
Thermal packer of the present utility model comprises: lower contact, telescoping tube, nut, sealing shroud, power spare, central tube, sheath, sealing mat, pressure pad, nut and box cupling, wherein: lower contact is connected with telescoping tube, nut is connected with central tube, power spare is connected with central tube, sealing shroud is connected with central tube by sheath, telescoping tube is screwed by screw thread by nut through sealing mat, pressure pad with nut, sealing shroud, power spare, central tube, sheath the stress that produces after the sealing mat distortion is connected, and telescoping tube is connected with box cupling.
Automatic compensation low temperature of the present utility model set thermal packer set temperature low (120-150 ℃), the time that sets short (15 minutes), do not need and the supporting use of down-hole expansion loop, reduced surfaceman's labour intensity and cost for oil production.
Description of drawings
Fig. 1 is the structural representation of thermal packer of the present utility model.
The specific embodiment
The packer main member comprises lower contact 1, telescoping tube 2, nut 3, sealing shroud 4 (selecting material wear-resisting, heat-resisting, that thermal conductivity is good for use), leaf spring 5 (material is 30W4Cr2V), central tube 6, sheath 7, sealing mat 8, pressure pad 9, nut 10, box cupling 11.Be connected for oil pipe thread between lower contact 1 and the telescoping tube 2, nut 3 is connected for box thread with central tube 6, leaf spring 5 is connected with central tube 6 through screw (not illustrating in the drawings), sealing shroud 4 is connected with central tube 6 through screw thread by sheath 7, and telescoping tube 2 is screwed by screw thread by nut 10 through sealing mat 8, pressure pad 9 with nut 3, sealing shroud 4, leaf spring 5, central tube 6, sheath 7 stress that produces after sealing mat 8 distortion is connected.Telescoping tube 2 is connected for oil pipe thread with box cupling 11.Keep leaf spring 5 to have certain precompression not destroy the external diameter shape of sealing shroud 4 simultaneously during assembling, in steam injection process, when hot vapour passes through the centre bore of telescoping tube 2, produce heat radiation, make the metalwork heating of packer, and heat transferred sealing shroud 4, make its deliquescing, intensity descends, when the intensity of sealing shroud 4 during less than the pressure of leaf spring 5, sealing shroud 4 expands outwardly under the effect of leaf spring 5, relies on shaft in wall, play the shut-in well effect, air injection pipe will be compensated to lower slider by telescoping tube 2 by the part of thermal stretching in the steam injection process.
Claims (8)
1, a kind of automatic compensation low temperature sets thermal packer, comprise: lower contact (1), telescoping tube (2), nut (3), sealing shroud (4), power spare (5), central tube (6), sheath (7), sealing mat (8), pressure pad (9), nut (10) and box cupling (11), it is characterized in that: lower contact (1) is connected with telescoping tube (2), nut (3) is connected with central tube (6), power spare (5) is connected with central tube (6), sealing shroud (4) is connected with central tube (6) by sheath (7), telescoping tube (2) and nut (3), sealing shroud (4), power spare (5), central tube (6), sheath (7) is through sealing mat (8), pressure pad (9) screws the stress that sealing mat (8) distortion back is produced by nut (10) by screw thread and connects, and telescoping tube (2) is connected with box cupling (11).
2, automatic compensation low temperature as claimed in claim 1 sets thermal packer, it is characterized in that: power spare (5) is a leaf spring.
3, automatic compensation low temperature as claimed in claim 2 sets thermal packer, it is characterized in that: the material of leaf spring is 30W4Cr2V.
4, set thermal packer as each described automatic compensation low temperature in the claim 1 to 3, it is characterized in that: be oil pipe thread between lower contact (1) and telescoping tube (2), box cupling (11) and the telescoping tube (2) and be connected.
5, set thermal packer as each described automatic compensation low temperature in the claim 1 to 3, it is characterized in that: power spare (5) is connected with central tube (6) through screw.
6, set thermal packer as each described automatic compensation low temperature in the claim 1 to 3, it is characterized in that: sealing shroud (4) is connected with central tube (6) through screw thread by sheath (7).
7, automatic compensation low temperature as claimed in claim 4 sets thermal packer, it is characterized in that: power spare (5) is connected with central tube (6) through screw.
8, automatic compensation low temperature as claimed in claim 7 sets thermal packer, it is characterized in that: sealing shroud (4) is connected with central tube (6) through screw thread by sheath (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420011356 CN2740770Y (en) | 2004-07-28 | 2004-07-28 | Automatic compensation low-temperature setting thermal recovery packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420011356 CN2740770Y (en) | 2004-07-28 | 2004-07-28 | Automatic compensation low-temperature setting thermal recovery packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2740770Y true CN2740770Y (en) | 2005-11-16 |
Family
ID=35351061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420011356 Expired - Fee Related CN2740770Y (en) | 2004-07-28 | 2004-07-28 | Automatic compensation low-temperature setting thermal recovery packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2740770Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322237A (en) * | 2011-06-14 | 2012-01-18 | 中国石油天然气股份有限公司 | Self-expansion packer |
| CN115949370A (en) * | 2023-03-10 | 2023-04-11 | 太原科技大学 | Light ring type dissolvable bridge plug |
-
2004
- 2004-07-28 CN CN 200420011356 patent/CN2740770Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322237A (en) * | 2011-06-14 | 2012-01-18 | 中国石油天然气股份有限公司 | Self-expansion packer |
| CN102322237B (en) * | 2011-06-14 | 2014-01-15 | 中国石油天然气股份有限公司 | Self-expansion packer |
| CN115949370A (en) * | 2023-03-10 | 2023-04-11 | 太原科技大学 | Light ring type dissolvable bridge plug |
| CN115949370B (en) * | 2023-03-10 | 2023-06-16 | 太原科技大学 | Aperture type dissolvable bridge plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: He Changhong Document name: Notification of Termination of Patent Right |
|
| 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 |