CN102704867B - Vacuum heat-preservation circulating pipe special for oil production of oilfield - Google Patents
Vacuum heat-preservation circulating pipe special for oil production of oilfield Download PDFInfo
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- CN102704867B CN102704867B CN201210186559.9A CN201210186559A CN102704867B CN 102704867 B CN102704867 B CN 102704867B CN 201210186559 A CN201210186559 A CN 201210186559A CN 102704867 B CN102704867 B CN 102704867B
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Abstract
The invention relates to the technical field of oil production equipment, in particular to a vacuum heat-preservation circulating pipe special for the oil production of an oilfield. The vacuum heat-preservation circulating pipe is applied to the viscosity reduction and paraffin precipitation prevention of crude oil in thick oil production heating operation. The technical scheme is that: a vacuum heat-preservation pipe is arranged in a hollow outer pipe, and an annular cavity is formed between the vacuum heat-preservation pipe and the hollow outer pipe; a joint is arranged at each of the two ends of the vacuum heat-preservation pipe, and a double-layer vacuum heat-preservation structure is arranged on the middle part of the vacuum heat-preservation pipe; a runner groove is formed in the joint at each of the two ends of the vacuum heat-preservation pipe; and the runner grooves, the annular cavity and a pipe cavity of the vacuum heat-preservation pipe form a circulation communicating channel. The vacuum heat-preservation circulating pipe has the advantages of simple structure, convenience for mounting, long service life and reusability; the vacuum heat-preservation pipe has a good heat-preservation effect; and the viscosity of the crude oil can be reduced, and paraffin precipitation can be prevented, so that the yield of the crude oil can be improved.
Description
Technical field
The present invention relates to technical field of oil extraction equipment, particularly relate to a kind of oil extraction in oil field Special vacuum heat preserving circle tube be applicable to for reducing crude oil viscosity, Wax proofing in thickened oil recovery heating operation.
Background technology
In thickened oil recovery process, due to the comparatively large and easy wax deposition of recovery process Crude Oil viscosity, greatly affect crude oil yield.For this reason existing processing mode injects high-temperature-hot-water by sucker rod or oil pipe to down-hole, and hot water direct mixing with viscous crude carries out interchange of heat, to reduce thick oil viscosity, improves the output of recovering the oil.The immediate problem that this mode of heating brings is that the water content of crude oil improves, and causes crude quality significantly to lower, and adds the burden of follow-up water-oil separating.Due to oil field well oil recovery bad environments, the technological means being realized heavy oil heating by pipe fitting Inner eycle also do not found at present.
Summary of the invention
The object of the invention is the defect for prior art, providing in a kind of thickened oil recovery can viscosity reduction, Wax proofing and can improve the oil extraction in oil field Special vacuum heat preserving circle tube of crude output and quality.
The present invention is achieved by the following technical solutions: comprise hollow outer tube, is provided with vacuum heat-preserving tube in it, and form annular space chamber therebetween; The two ends of described vacuum heat-preserving tube be respectively equipped with joint, middle be double-layered vacuum heat-insulation structure, described joint is equipped with flow path groove, and the segment dislocation circulation communicating passage of flow path groove, annular space chamber and vacuum heat-preserving tube.
The described vacuum heat-preserving tube at least joint of one end is provided with and vacuumizes hole, which is provided with plug, thus facilitates vacuum pumping; Be provided with spacer ring between the interior pipe of described double-layered vacuum heat-insulation structure and outer tube, to prevent inner and outer pipes from contacting, affect heat insulation effect.
Below provide the concrete syndeton of a kind of hollow outer tube and vacuum heat-preserving tube: the inwall at described hollow outer tube two ends is equipped with step, one end joint of described vacuum heat-preserving tube is provided with to coordinate with described step fixing boss, other end joint be provided with and coordinates fastening nut with described step, described flow path groove is located on boss and nut respectively, from hollow outer tube one end, Inner eycle vacuum tube is penetrated in it during use, make boss and corresponding step against, then the other end by fastening nuts on corresponding step.
Described joint is the male and female nipple cooperatively interacted, and wherein male thread joint is provided with sealing ring, to prevent the seepage of high-temperature medium.
The present invention has that structure is simple, easy for installation, long service life the advantage that can reuse, hollow rod or oil pipe for injecting high-temperature-hot-water during existing heavy oil heating can be replaced to operate, and the vacuum tube insulation construction high insulating effect of Inner eycle, former oil viscosity can be reduced, and can Wax proofing, and heat medium is by self-loopa thus avoid being mixed in crude oil, therefore crude oil yield and quality are all improved largely.
Accompanying drawing explanation
Fig. 1 is the structural representation of oil extraction in oil field Special vacuum heat preserving circle tube;
Fig. 2 is the structural representation of vacuum heat-preserving tube 2 in Fig. 1;
Fig. 3 is the structural representation of hollow outer tube 1 in Fig. 1;
In figure: 1, hollow outer tube, 2, vacuum heat-preserving tube, 3-4, sealing ring, 5, male thread joint, 6, jackscrew, 7, outer tube, 8, interior pipe, 9, spacer ring, 10, nut, 11, box thread joint, 12 (12-1,12-2) step, 13, boss.
Detailed description of the invention
Below in conjunction with accompanying drawing and instantiation, the invention will be further described, but not as a limitation of the invention.
As illustrated in the accompanying drawings from 1 to 3, a kind of oil extraction in oil field Special vacuum heat preserving circle tube, comprises the vacuum heat-preserving tube 2 of hollow outer tube 1 and interior installation thereof, forms annular space chamber therebetween; Hollow outer tube 1 two ends are respectively equipped with male thread joint and box thread joint, and wherein male thread joint is provided with sealing ring 3; Vacuum heat-preserving tube two ends be respectively equipped with male thread joint 5 and box thread joint 11, middle be double-layered vacuum heat-insulation structure, wherein male thread joint 5 is provided with sealing ring 4, and double-layered vacuum heat-insulation structure comprises interior pipe 8 and outer tube 7, therebetween spacer ring 9 spaced apart.The syndeton of hollow outer tube 1 and vacuum heat-preserving tube 2 is: the inwall at hollow outer tube 1 two ends is processed with step 12-1 and 12-2 respectively; The male thread joint 5 of vacuum heat-preserving tube 2 one end is provided with to coordinate with step 12-1 the box thread joint 11 of fixing boss 13, the other end is provided with and coordinates fastening nut 10 with step 12-2, boss 13 be provided be communicated with the vacuum layer between outer tube 8 and interior pipe 7 with the flow path groove of ring cavity connects vacuumize hole, Kong Shangyong jackscrew 6 seals; During installation, vacuum heat-preserving tube 2 is penetrated wherein from the male thread tip side of hollow outer tube 1, make boss 13 and step 12-1 against, nut 10 is fastened on step 12-2 by instrument at the box thread tip side of hollow outer tube 1.
The oil extraction in oil field Special vacuum heat preserving circle tube assembled many is connected successively by screw thread, the tube chamber of interior pipe 7, flow path groove and annular space chamber is made to form circulation communicating passage, then lower to object well depth, high-temperature medium is injected into down-hole by pipe 7 in vacuum heat-preserving tube 2 by surface pump, returned by the annular space chamber between vacuum heat-preserving tube 2 and hollow outer tube 1 and flow path groove again, thus heat is passed to crude oil, make its viscosity reduction or prevent wax deposition, improving crude output.
This programme is proved by field test: utilize oil well associated gas heat cycles medium, is heating oil well viscosity reduction, can saves a large amount of electric power.Because in vacuum, pipe thermal insulation is good, effectively heat can be passed to stratum, reduce viscosity of crude, improve the jig frequency 1.5 times of oil pumper, extend manufacture cycle 50%, greatly improve well yield.After hollow rod wearing and tearing are scrapped, unload lower nut, in taking out, pipe can repeat to be installed in new hollow rod, and cost-saved more than 30%.
Claims (1)
1. an oil extraction in oil field Special vacuum heat preserving circle tube, comprises hollow outer tube, it is characterized in that: be provided with vacuum heat-preserving tube in hollow outer tube, and forms annular space chamber therebetween; The two ends of described vacuum heat-preserving tube be respectively equipped with joint, middle be double-layered vacuum heat-insulation structure, described joint is equipped with flow path groove, and the segment dislocation circulation communicating passage of flow path groove, annular space chamber and vacuum heat-preserving tube; The described vacuum heat-preserving tube at least joint of one end is provided with and vacuumizes hole, which is provided with plug; Spacer ring is provided with between the interior pipe of described double-layered vacuum heat-insulation structure and outer tube; The inwall at described hollow outer tube two ends is equipped with step, one end joint of described vacuum heat-preserving tube is provided with to coordinate with described step fixing boss, other end joint be provided with and coordinates fastening nut with described step, and described flow path groove is located on boss and nut respectively; Described joint is the male and female nipple cooperatively interacted, and wherein male thread joint is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210186559.9A CN102704867B (en) | 2012-06-08 | 2012-06-08 | Vacuum heat-preservation circulating pipe special for oil production of oilfield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210186559.9A CN102704867B (en) | 2012-06-08 | 2012-06-08 | Vacuum heat-preservation circulating pipe special for oil production of oilfield |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102704867A CN102704867A (en) | 2012-10-03 |
| CN102704867B true CN102704867B (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210186559.9A Active CN102704867B (en) | 2012-06-08 | 2012-06-08 | Vacuum heat-preservation circulating pipe special for oil production of oilfield |
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| CN (1) | CN102704867B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464643B (en) * | 2014-09-12 | 2019-02-15 | 中国石油天然气股份有限公司 | A kind of circuit protection structure of resistance to ultralow temperature of downhole tester |
| CN105134093B (en) * | 2015-08-31 | 2017-08-29 | 东营新佳环保技术开发有限公司 | Interior circulation is incubated oil pick-up tube |
| CN105386732A (en) * | 2015-12-08 | 2016-03-09 | 中国石油天然气股份有限公司 | Tool applied to underground hot water circulation |
| CN107166137B (en) * | 2017-07-05 | 2018-07-13 | 中国石油大学(北京) | Geothermal well double-layered vacuum heat-insulation structure and its application method |
| CN114382435A (en) * | 2020-10-21 | 2022-04-22 | 中国海洋石油集团有限公司 | Hot washing pipe column of internal circulation heat preservation pipe of offshore oilfield and use method of hot washing pipe column |
| CN113236142A (en) * | 2021-03-03 | 2021-08-10 | 沧州润涛石油设备有限公司 | Double-layer vacuum insulation pipe, sucker rod and assembly process |
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| CN2544086Y (en) * | 2002-06-14 | 2003-04-09 | 孟范中 | Thermal-insulation oil production pipe for thick oil |
| CN201078195Y (en) * | 2007-09-20 | 2008-06-25 | 范振明 | Hollow sucker rod |
| CN201110133Y (en) * | 2007-10-09 | 2008-09-03 | 沧州润涛石油设备有限公司 | Double hollow sucker rod |
| CN201276975Y (en) * | 2008-10-30 | 2009-07-22 | 李国栋 | Hollow sucker rod |
| CN101575967A (en) * | 2009-05-22 | 2009-11-11 | 李慧源 | Heat insulation pipe and hollow sucker rod comprising same |
| CN101638977A (en) * | 2009-10-16 | 2010-02-03 | 沧州润涛石油设备有限公司 | Sectional combined double hollow oil pumping rod |
| CN202578543U (en) * | 2012-06-08 | 2012-12-05 | 山东创佳石油机械制造有限公司 | Vacuum thermal insulation circulating pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO318968B1 (en) * | 2002-12-16 | 2005-05-30 | Einar Kristiansen | Casing with insulated annular cavity |
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2012
- 2012-06-08 CN CN201210186559.9A patent/CN102704867B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2544086Y (en) * | 2002-06-14 | 2003-04-09 | 孟范中 | Thermal-insulation oil production pipe for thick oil |
| CN201078195Y (en) * | 2007-09-20 | 2008-06-25 | 范振明 | Hollow sucker rod |
| CN201110133Y (en) * | 2007-10-09 | 2008-09-03 | 沧州润涛石油设备有限公司 | Double hollow sucker rod |
| CN201276975Y (en) * | 2008-10-30 | 2009-07-22 | 李国栋 | Hollow sucker rod |
| CN101575967A (en) * | 2009-05-22 | 2009-11-11 | 李慧源 | Heat insulation pipe and hollow sucker rod comprising same |
| CN101638977A (en) * | 2009-10-16 | 2010-02-03 | 沧州润涛石油设备有限公司 | Sectional combined double hollow oil pumping rod |
| CN202578543U (en) * | 2012-06-08 | 2012-12-05 | 山东创佳石油机械制造有限公司 | Vacuum thermal insulation circulating pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102704867A (en) | 2012-10-03 |
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Address after: 257000, No. 17, Zoucheng Road, Shengli Industrial Park, Dongying District, Shandong, Dongying Patentee after: Shandong Chuangjia New Energy Technology Co., Ltd Address before: 257000, No. 17, Zoucheng Road, Shengli Industrial Park, Dongying District, Shandong, Dongying Patentee before: Shandong Chuangjia Petroleum Machinery Manufacturing Co., Ltd. |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xie Wei Inventor after: Ye Shupeng Inventor after: Zheng Jiayuan Inventor after: Liu Guangdong Inventor after: Wang Weilin Inventor after: Tang Shukai Inventor after: Zhang Hongsheng Inventor after: Zhao Zhirong Inventor after: Li Long Inventor after: Ding Haibin Inventor before: Xie Wei Inventor before: Ye Shupeng Inventor before: Zheng Jiayuan Inventor before: Liu Guangdong Inventor before: Wang Weilin Inventor before: Tang Shukai Inventor before: Zhang Hongsheng Inventor before: Zhao Zhirong Inventor before: Li Long Inventor before: Ding Haibin |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200426 Address after: 257000 Ji'nan Road, Dongying District, Shandong, No. 125, No. Co-patentee after: SHENGLI OILFIELD DONGSHENG JINGGONG PETROLEUM DEVELOPMENT GROUP Co.,Ltd. Patentee after: China Petroleum & Chemical Corp. Address before: 257000, No. 17, Zoucheng Road, Shengli Industrial Park, Dongying District, Shandong, Dongying Patentee before: Shandong Chuangjia New Energy Technology Co., Ltd |