CN205225087U - Bellows heat insulation oil pipe - Google Patents
Bellows heat insulation oil pipe Download PDFInfo
- Publication number
- CN205225087U CN205225087U CN201520896375.0U CN201520896375U CN205225087U CN 205225087 U CN205225087 U CN 205225087U CN 201520896375 U CN201520896375 U CN 201520896375U CN 205225087 U CN205225087 U CN 205225087U
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- China
- Prior art keywords
- heat insulation
- oil pipe
- inner tube
- insulation oil
- bellows
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- 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.)
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Abstract
The utility model relates to a heat insulation oil pipe, in particular to bellows heat insulation oil pipe are used in the exploitation of viscous crude thermal recovery steam flooding. The coupling is connected to the device's outer tube one end, and the welding of inner tube both ends is on outer inside pipe wall, and the annular space is equipped with thermal insulation material and evacuation between inner tube and the outer tube, is connected with one section or multistage bellows in the middle part of the inner tube. The utility model discloses a prevent that heat insulation oil pipe inner tube when using from taking place the bending deformation, life when having prolonged heat insulation oil pipe and being used for special exploitation technology such as steam flooding, guarantee the inner tube long -term high temperature working condition the deformation does not take place down or the deflection less, guarantee passing through smoothly of test instrument in the pit to the admission of on -the -spot steam flooding well monitoring data. Overcome the flexible deformation under long -term high temperature working condition of current heat insulation oil pipe inner tube, what lead to in the pit that test instrument can't pass through is not enough.
Description
Technical field:
The utility model relates to a kind of heavy crude heat extraction steam driving exploitation insulated tubing, particularly a kind of bellows insulated tubing.
Background technology:
Domestic pre existing stress insulated tubing tubing is common API oil pipe, in the fabrication process to tubing Shi Hanzhang, but cause pipe in insulated tubing to deform in long-time high temperature action lower prestress release deficiency, test finds that in insulated tubing, pipe undergauge phenomenon is serious, interior nominal pipe diameter is φ 62mm, and after long-term steam injection, the downhole testing instrument of φ 38mm also cannot pass through.The interior pipe undergauge phenomenon that steam injection well casing column condition difference causes constrains the admission of steam flooding well monitoring materials greatly.For the oil well of steam driving exploitation technique and other special operation conditions and technique, existing insulated tubing can not meet the demands.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of bellows insulated tubing, the arrangement achieves prevent insulated tubing in use in pipe occur bending and deformation, extend insulated tubing for the application life during special exploitation techniques such as steam flooding, ensure in pipe do not deform under long term high temperature duty or deflection less, ensure passing through smoothly, so that on-site steam drives the admission of well monitoring materials of downhole testing instrument.Overcome pipe flexible distortion under long term high temperature duty in existing insulated tubing, cause the deficiency that downhole testing instrument cannot pass through.
Technical solution adopted in the utility model is: a kind of bellows insulated tubing, comprises box cupling, outer tube and interior pipe; Outer tube one end connection coupling, interior pipe two ends are welded on outer tube wall, and between interior pipe and outer tube, annular space is equipped with heat-barrier material and vacuumizes, and are connected with one or more snippets bellows in the middle part of interior pipe.
The beneficial effects of the utility model are: the utility model prevent insulated tubing in use in pipe occur bending and deformation, extend insulated tubing for the application life during special exploitation techniques such as steam flooding, ensure in pipe do not deform under long term high temperature duty or deflection less, ensure passing through smoothly, so that on-site steam drives the admission of well monitoring materials of downhole testing instrument.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention:
As shown in Figure 1, a kind of bellows insulated tubing, comprises box cupling 1, outer tube 2 and interior pipe 4; Outer tube 2 one end connection coupling 1, interior pipe 4 two ends are welded on outer tube 2 inwall, and between interior pipe 4 and outer tube 2, annular space is equipped with heat-barrier material 3 and vacuumizes, and are connected with one or more snippets bellows in the middle part of interior pipe 4.
On interior pipe 4, one or more snippets bellows is added according to designing and calculating, ensure that the elongation of bellows can compensate insulated tubing for the deflection of interior pipe when long-term steam flooding or other special exploitation technique by thermal stretching, ensure in pipe 4 do not deform under long term high temperature duty or deflection less, meet field working conditions requirement.
Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection domain of the present utility model as long as meet.
Claims (1)
1. a bellows insulated tubing, comprises box cupling (1), outer tube (2) and interior pipe (4); It is characterized in that: outer tube (2) one end connection coupling (1), interior pipe (4) two ends are welded on outer tube (2) inwall, between interior pipe (4) and outer tube (2), annular space is equipped with heat-barrier material (3) and vacuumizes, and interior pipe (4) middle part is connected with one or more snippets bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520896375.0U CN205225087U (en) | 2015-11-11 | 2015-11-11 | Bellows heat insulation oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520896375.0U CN205225087U (en) | 2015-11-11 | 2015-11-11 | Bellows heat insulation oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225087U true CN205225087U (en) | 2016-05-11 |
Family
ID=55900161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520896375.0U Active CN205225087U (en) | 2015-11-11 | 2015-11-11 | Bellows heat insulation oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205225087U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804712A (en) * | 2016-05-17 | 2016-07-27 | 太原理工大学 | In-situ heat injection slice mining section well body device of thick ore deposit of oil shale |
| CN106014357A (en) * | 2016-05-17 | 2016-10-12 | 太原理工大学 | Oil gas slice mining method through in-situ heat injection in oil shale thick ore bed |
| CN109424325A (en) * | 2017-08-22 | 2019-03-05 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of flow string and oil extraction system |
-
2015
- 2015-11-11 CN CN201520896375.0U patent/CN205225087U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804712A (en) * | 2016-05-17 | 2016-07-27 | 太原理工大学 | In-situ heat injection slice mining section well body device of thick ore deposit of oil shale |
| CN106014357A (en) * | 2016-05-17 | 2016-10-12 | 太原理工大学 | Oil gas slice mining method through in-situ heat injection in oil shale thick ore bed |
| CN105804712B (en) * | 2016-05-17 | 2018-08-14 | 太原理工大学 | A kind of oil shale thick deposit original position heat injection separate zone production section well device |
| CN106014357B (en) * | 2016-05-17 | 2018-11-06 | 太原理工大学 | A kind of method of oil shale thick deposit original position heat injection separate zone production oil gas |
| CN109424325A (en) * | 2017-08-22 | 2019-03-05 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of flow string and oil extraction system |
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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 |
Effective date of registration: 20201015 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Petroleum Equipment Manufacturing Co.,Ltd. Address before: 300457 Binhai New Area, Tianjin Binhai Service Outsourcing Industrial Park, building 3 Patentee before: CNPC Bohai Petroleum Equipment Manufacturing Co.,Ltd. |
|
| TR01 | Transfer of patent right |