CN202560114U - Efficient prestress thermal insulation pipe - Google Patents
Efficient prestress thermal insulation pipe Download PDFInfo
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- CN202560114U CN202560114U CN201220175413XU CN201220175413U CN202560114U CN 202560114 U CN202560114 U CN 202560114U CN 201220175413X U CN201220175413X U CN 201220175413XU CN 201220175413 U CN201220175413 U CN 201220175413U CN 202560114 U CN202560114 U CN 202560114U
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- pipe
- thermal insulation
- outer tube
- interior pipe
- wall
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Abstract
The utility model discloses an efficient prestress thermal insulation pipe, which includes an inner pipe, wherein the outer side of the inner pipe is sleeved with the outer pipe; and ring-shaped bulges are arranged at the two ends of the outer wall of the inner pipe, and are hermetically welded with the outer pipe, so as to form a sealed chamber between the inner pipe and the outer pipe. Through the adoption of the scheme, the thermal insulation level of the thermal insulation oil pipe is greatly improved and reaches to E grade in case of 0.133 pa of vacuum degree, and the thermal insulation oil pipe after long-term usage reaches the thermal insulation standard no lower than the C grade thermal insulation level, has stable quality and prolongs the service life.
Description
Technical field
The utility model relates to a kind of instlated tubular of heavy oil wells exploitation usefulness, relates in particular to a kind of high efficient prestress instlated tubular.
Background technology
High vacuum prestressing force insulated tubing is the visual plant that heavy oil wells exploitation via steam injection process adopts; Its purposes is to inject high temperature, high steam toward the down-hole as the gas injection passage; And protect oil well casing and oil well cement to avoid thermal stress damage, and reduce the pit shaft thermal loss, improve gas injection oil recovery effect.The prestressing force instlated tubular of present domestic oil recovery is between the instlated tubular inner and outer pipes, to add materials such as aluminium foil, glass, getter; And find time to reach effect of heat insulation; It is heat insulation poor to adopt the instlated tubular of this structure to exist, and the heat insulation life-span is short, and quality is unstable; Shortcomings such as easy fatigue damage influence the oil well ordinary production.
The utility model content
The problem that the utility model will solve is in order to overcome above-mentioned technological deficiency, a kind of steady quality to be provided, good heat-insulation effect, life-span length, intensity and the high high efficient prestress instlated tubular of thermal insulation level.
In order to address the above problem, the utility model adopts following technical scheme:
A kind of high efficient prestress instlated tubular; Comprise interior pipe, the interior pipe outside is set with outer tube, and it is characterized in that: the position that is positioned at two ends on the outer wall of interior pipe has annular protrusion respectively; Sealing welding between this annular protrusion and the outer tube forms a sealed chamber between pipe and the outer tube in making.
Below be the further improvement of the utility model to such scheme:
Be coated with the coating that high-performance reflective insulation coating is processed on the outer wall of interior pipe and on the inwall of outer tube.
Further improve: the outer wall of interior pipe is provided with integument.
The utility model adopts such scheme, and the arriving significantly of insulation level of insulated tubing improved, and under vacuum 0.133pa situation, just can reach E level insulation level.The heat insulation standard of the long-term insulated tubing that uses is not less than C level insulation level, and steady quality has improved application life.
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model embodiment.
Among the figure: pipe in the 1-; The 2-outer tube; The 3-integument; The 4-coating; The 5-box cupling; 6-sealed chamber; The 7-annular protrusion.
The specific embodiment
Embodiment; As shown in Figure 1, a kind of high efficient prestress instlated tubular, pipe 1 in comprising; Interior pipe 1 outside is set with outer tube 2; The position that is positioned at two ends on the outer wall of interior pipe 1 has annular protrusion 7 respectively, and sealing welding between this annular protrusion 7 and the outer tube 2 makes to form a sealed chamber 6 between interior pipe 1 and the outer tube 2.
During assembling, said in a pipe wherein end of 1 be welded on the inside of outer tube 2 through enlarging, the other end is elongated to behind the certain-length and outer tube 2 welding through the heating frock.
Be coated with the coating 4 that high-performance reflective insulation coating is processed on the outer wall of interior pipe 1 and on the inwall of outer tube 2.
The outer wall of interior pipe 1 is provided with integument 3, the insulation layer that said integument 3 is processed for heat insulating material.
During assembling, connect through box cupling 5 between the joint of each prestressing force instlated tubular.
During production, the outer wall of pipe 1 carries out ball blast and blasting treatment with the inner wall surface of outer tube 2 in the prestressing force insulated tubing, has improved the matrix strength of interior pipe 1 and outer tube 2, and the oxide layer that will be prone to produce pernicious gas is simultaneously removed.
The utility model adopts such scheme, and arriving significantly of insulated tubing insulation level improved, and under vacuum 0.133pa situation, just can reach E level insulation level.The heat insulation standard of the long-term insulated tubing that uses is not less than C level insulation level, has improved application life.Pipe 1 has improved body intensity with outer tube 2 through shot-peening and blasting treatment in the insulated tubing, has reduced organism fatigue damage degree.
The preferred embodiment that more than is the utility model describes, and should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and is not used in qualification the utility model.
Claims (3)
1. high efficient prestress instlated tubular; Comprise interior pipe (1); Interior pipe (1) outside is set with outer tube (2); It is characterized in that: the position that is positioned at two ends on the outer wall of interior pipe (1) has annular protrusion (7) respectively, and sealing welding between this annular protrusion (7) and the outer tube (2) forms a sealed chamber (6) between pipe (1) and the outer tube (2) in making.
2. a kind of high efficient prestress instlated tubular according to claim 1 is characterized in that: be coated with the coating (4) that high-performance reflective insulation coating is processed on the outer wall of interior pipe (1) and on the inwall of outer tube (2).
3. a kind of high efficient prestress instlated tubular according to claim 2 is characterized in that: the outer wall of interior pipe (1) is provided with integument (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220175413XU CN202560114U (en) | 2012-04-24 | 2012-04-24 | Efficient prestress thermal insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220175413XU CN202560114U (en) | 2012-04-24 | 2012-04-24 | Efficient prestress thermal insulation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202560114U true CN202560114U (en) | 2012-11-28 |
Family
ID=47209779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220175413XU Expired - Fee Related CN202560114U (en) | 2012-04-24 | 2012-04-24 | Efficient prestress thermal insulation pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202560114U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047549A (en) * | 2014-06-25 | 2014-09-17 | 山东鸿盛石油化工装备有限公司 | High-abrasion-resistant corrosion-resistant insulation oil tube |
| CN106703707A (en) * | 2015-11-16 | 2017-05-24 | 胜利油田胜机石油装备有限公司 | Composite-structure heat-insulating oil pipe |
| CN113250669A (en) * | 2020-02-11 | 2021-08-13 | 中国石油天然气股份有限公司 | Fireflood injection string |
-
2012
- 2012-04-24 CN CN201220175413XU patent/CN202560114U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047549A (en) * | 2014-06-25 | 2014-09-17 | 山东鸿盛石油化工装备有限公司 | High-abrasion-resistant corrosion-resistant insulation oil tube |
| CN106703707A (en) * | 2015-11-16 | 2017-05-24 | 胜利油田胜机石油装备有限公司 | Composite-structure heat-insulating oil pipe |
| CN113250669A (en) * | 2020-02-11 | 2021-08-13 | 中国石油天然气股份有限公司 | Fireflood injection string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170727 Address after: 834000 the Xinjiang Uygur Autonomous Region Karamay Petrochemical Industrial Park Central Avenue Patentee after: Dongbao Karamay special tube Co., Ltd. Address before: 262700 Shandong city in Weifang Province, Shouguang City East Ring Road and Luo Fu Street intersection Patentee before: Shandong Dongbao Group Co.,Ltd. |
|
| 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: 20121128 Termination date: 20210424 |