CN203742573U - Thermal insulation oil casing pipe - Google Patents
Thermal insulation oil casing pipe Download PDFInfo
- Publication number
- CN203742573U CN203742573U CN201420068380.8U CN201420068380U CN203742573U CN 203742573 U CN203742573 U CN 203742573U CN 201420068380 U CN201420068380 U CN 201420068380U CN 203742573 U CN203742573 U CN 203742573U
- Authority
- CN
- China
- Prior art keywords
- pipe body
- thermal insulation
- intervalve
- welded
- oil casing
- 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 - Lifetime
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 28
- 239000011261 inert gas Substances 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 239000012774 insulation material Substances 0.000 claims abstract description 4
- 238000002955 isolation Methods 0.000 claims description 9
- 238000003754 machining Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000001257 hydrogen Substances 0.000 abstract description 5
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 5
- 230000035699 permeability Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 5
- 238000010793 Steam injection (oil industry) Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 150000001398 aluminium Chemical class 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Landscapes
- Thermal Insulation (AREA)
Abstract
The utility model relates to a thermal insulation oil casing pipe. The thermal insulation oil casing pipe is characterized by comprising an outer pipe body, a middle pipe body and an inner pipe body, wherein the outer pipe body, the middle pipe body and the inner pipe body arranged in a gap sleeve mode, one end of the middle pipe body is provided with inner threads, the other end of the middle pipe body is provided with outer threads, one end, provided with the inner threads, of the middle pipe body is welded to the pipe end of the outer pipe body and welded to the inner thread length position of the inner pipe body, and one end, provided with the outer threads, of the middle pipe body is welded to the outer thread length position of the outer pipe body and welded to the pipe end of the inner pipe body; an annular cavity formed by the outer pipe body and the middle pipe body is filled with thermal insulation materials, is vacuumized, and forms a first thermal insulation layer, an annular cavity formed by the middle pipe body and the inner pipe body is vacuumized, is filled with inert gas in an injected mode, and forms a second thermal insulation layer. The thermal insulation oil casing pipe has three layers of steel pipes and a double-layer thermal insulation structure, the thermal insulation performance is greatly improved, the inert gas can be injected into the second thermal insulation layer to relieve the hydrogen permeability phenomenon, thermal insulation service life is prolonged, and the double-layer structure at the thread joint thoroughly solves the problem that of the heat loss at the thread joint fundamentally.
Description
Technical field
The utility model relates to a kind of heat insulation tubing and casing, is specifically related to steam injection, the oil tool of heavy crude heat extraction operation in a kind of petroleum industry, belongs to technical field of petroleum extraction
Background technology
Along with the development of oil exploitation industry and the continuous increase of consumption of petroleum amount, heavy crude producing has become the main output source of domestic and international oil company, and steam soak and two kinds of techniques of steam flooding are taked in thickened oil recovery conventionally, and these two kinds of techniques all need to use insulated tubing and sleeve pipe as steam injection oil tool.Current insulated tubing all according to or with reference to the disclosed a kind of < < vacuum heat-insulation oil pipe of Chinese patent (application number 97115719.7) and manufacturing process > > thereof, produce, product is by box cupling, insulation bushing, bushing pipe, outer tube, inner tube, isolation layer, wiper block, inhale the compositions such as hydrogen agent, wherein insulating layer structure is: inner tube laminated aluminium foil, glass cross interval is wound around, annular space vacuumizes, and add and inhale hydrogen agent, the heat insulation tubing and casing apparent heat conductivity of this kind of fabrication process is better, at protection oil well casing, reduce wellbore heat loss, lifting note is adopted effect aspect and has been played positive effect, but the existence because of " negative pressure " in insulated tubing annular space and steel " hydrogen oozes " phenomenon, insulated tubing is obviously decayed in go into the well steam injection oil recovery about 2 years or 15 all after date heat-proof qualities of steam injection, had a strong impact on the application life of insulated tubing, box cupling junction heat waste is serious simultaneously, cause that this place's well cementing casing pipe occurs that cover damages phenomenon, therefore cause the huge waste of economic benefit.
Utility model content
The purpose of this utility model is to provide a kind of heat insulation tubing and casing that can overcome above-mentioned defect, heat-proof quality temperature, excellent working performance.Its technical scheme is:
A kind of heat insulation tubing and casing, it is characterized in that: the outer tube, intervalve and the inner tube that comprise steel gap suit, intervalve one end machining internal thread wherein, other end threading, one end of intervalve machining internal thread and outer tube weld at pipe end place, weld at reserved internal thread length place with inner tube, one end of intervalve threading and outer tube, in the welding of reserved external thread length place, weld at pipe end place with inner tube; Filling with insulation material vacuumize and form the first isolation layer in the annular space that outer tube and intervalve form, vacuumizes rear inert gas injecting, formation the second isolation layer in the annular space of intervalve and inner tube.
Compared with prior art, its advantage is the utility model:
1) there is double thermal insulation layer, greatly promoted the heat-proof quality of product;
2) in the annular space of inner tube and intervalve, inert gas injecting has slowed down " hydrogen oozes " phenomenon, has extended the heat insulation life-span;
3) in junction, be double-decker, thoroughly solved the heat waste problem at this place, its heat-proof quality is promoted to D～E level by current A～E level, junction heat waste 70% is reduced to 10% by what originally accounted for the total heat waste of tubing string, it is estimated that, the heat insulation life-span of the heat insulation tubing and casing of the utility model can extend to 8～10 years by current 2 years;
4) cover that has solved junction damages problem;
5) internal diameter is unified, and junction is without turbulent flow.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
In figure: 1, outer tube 2, intervalve 3, inner tube 4, the first isolation layer 5, the second isolation layer 6, take out orifice
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.In the embodiment shown in fig. 1: the outer tube 1, intervalve 2 and the inner tube 3 that comprise steel gap suit, intervalve 2 one end machining internal threads wherein, other end threading, one end of intervalve 2 machining internal threads and outer tube 1 weld at pipe end place, weld at reserved internal thread length place with inner tube 3, one end of intervalve 2 threadings and outer tube 1, in the welding of reserved external thread length place, weld at pipe end place with inner tube 3; Filling with insulation material vacuumize and form the first isolation layer 4 in the annular space that outer tube 1 and intervalve 2 form, vacuumizes rear inert gas injecting in the annular space of intervalve 2 and inner tube 3, forms the second isolation layer 5.
By SY/T5324-94 standard, the heat insulation tubing and casing of firm manufacture (newly pipe) and the heat insulation tubing and casing (old pipe) of use after 2 years are tested to its heat-proof quality, the results are shown in Table 1.Visible, the heat-proof quality of the new pipe of the heat insulation tubing and casing of the present invention all, between D～E, is used apparent heat conductivity after 2 years to change not quite, and data, can calculate accordingly, and the heat insulation life-span of the heat insulation tubing and casing of the present invention can reach 8～10 years.
The heat-proof quality of the heat insulation tubing and casing of table 1 the present invention
Claims (1)
1. a heat insulation tubing and casing, it is characterized in that: the outer tube (1), intervalve (2) and the inner tube (3) that comprise steel gap suit, intervalve (2) one end machining internal thread wherein, other end threading, one end of intervalve (2) machining internal thread and outer tube (1) weld at pipe end place, weld at reserved internal thread length place with inner tube (3), one end of intervalve (2) threading and outer tube (1), in the welding of reserved external thread length place, weld at pipe end place with inner tube (3); Filling with insulation material vacuumize and form the first isolation layer (4) in the annular space that outer tube (1) and intervalve (2) form, in the annular space of intervalve (2) and inner tube (3), vacuumize rear inert gas injecting, form the second isolation layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068380.8U CN203742573U (en) | 2014-02-17 | 2014-02-17 | Thermal insulation oil casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068380.8U CN203742573U (en) | 2014-02-17 | 2014-02-17 | Thermal insulation oil casing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742573U true CN203742573U (en) | 2014-07-30 |
Family
ID=51342390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420068380.8U Expired - Lifetime CN203742573U (en) | 2014-02-17 | 2014-02-17 | Thermal insulation oil casing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612628A (en) * | 2015-02-02 | 2015-05-13 | 中国海洋石油总公司 | Method for prolonging service life of vacuum insulated oil tube by filling high-pressure argon |
-
2014
- 2014-02-17 CN CN201420068380.8U patent/CN203742573U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612628A (en) * | 2015-02-02 | 2015-05-13 | 中国海洋石油总公司 | Method for prolonging service life of vacuum insulated oil tube by filling high-pressure argon |
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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: 20200305 Address after: 255000 west head of Weisi Road, Qilu Chemical Industry Zone, Linzi District, Zibo City, Shandong Province Patentee after: ZIBO FURUITE THERMAL ENERGY TECHNOLOGY Co.,Ltd. Address before: 257082 No. 203, South Road, Dongying District, Shandong, Dongying Patentee before: SHENGLI OILFIELD FREET PETROLEUM EQUIPMENT CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Insulating oil sleeve Effective date of registration: 20220530 Granted publication date: 20140730 Pledgee: Qi commercial bank Limited by Share Ltd. Linzi branch Pledgor: ZIBO FURUITE THERMAL ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2022980006527 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |