CN102704867A - 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
- Publication number
- CN102704867A CN102704867A CN2012101865599A CN201210186559A CN102704867A CN 102704867 A CN102704867 A CN 102704867A CN 2012101865599 A CN2012101865599 A CN 2012101865599A CN 201210186559 A CN201210186559 A CN 201210186559A CN 102704867 A CN102704867 A CN 102704867A
- Authority
- CN
- China
- Prior art keywords
- vacuum heat
- pipe
- preservation
- preserving
- oil
- 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.)
- Granted
Links
Images
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 the oil production equipment technical field, relate in particular to a kind of oil field that is used for reducing crude oil viscosity, anti-wax deposition in the thickened oil recovery heating operation special-purpose vacuum heat-preserving circulation pipe that recovers the oil that is applicable to.
Background technology
In the thickened oil recovery process, because the bigger and easy wax deposition of viscosity of crude in the recovery process influences crude oil yield greatly.Existing for this reason processing mode is to inject high-temperature-hot-water through sucker rod or oil pipe to the down-hole, and direct the mixing with viscous crude of hot water carried out interchange of heat, to reduce the viscosity of viscous crude, 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 has increased the burden of follow-up water-oil separating.Because oil field down-hole oil production environment is abominable, the interior circulation of pipe fitting of passing through that does not also have at present to find realizes the technological means that viscous crude heats.
Summary of the invention
The objective of the invention is the defective to prior art, special-purpose vacuum heat-preserving circulation pipe but recover the oil in the oil field that viscosity reduction in a kind of thickened oil recovery, anti-wax deposition is provided and can improves crude output and quality.
The present invention realizes through following technical scheme: comprise the hollow outer tube, be provided with vacuum heat-preserving tube in it, and form the annular space chamber between the two; The two ends of described vacuum heat-preserving tube are respectively equipped with joint, the centre is the double-layer vacuum insulation construction, are equipped with flow path groove on the described joint, and the tube chamber of flow path groove, annular space chamber and vacuum heat-preserving tube forms the circulation communication passage.
The joint of at least one end of said vacuum heat-preserving tube is provided with and vacuumizes the hole, which is provided with plug, thereby makes things convenient for vacuum pumping; Be provided with spacer ring between the interior pipe of said double-layer vacuum insulation construction and the outer tube,, influence heat insulation effect to prevent the inner and outer pipes contact.
Below provide the concrete syndeton of a kind of hollow outer tube and vacuum heat-preserving tube: be equipped with step on the inwall at said hollow outer tube two ends; One end joint of said vacuum heat-preserving tube be provided with the boss of said step matching and fixing, other end joint on be equipped with described step and cooperate fastening nut; Described flow path groove is located at respectively on boss and the nut; From hollow outer tube one end interior circulating vacuum pipe is penetrated in it during use; Make boss and corresponding step against, at the other end nut is fastened on the corresponding step then.
Described joint is the public box thread joint that cooperatively interacts, and wherein the male thread joint is provided with sealing ring, to prevent the seepage of high-temperature medium.
That the present invention has is simple in structure, easy for installation, long service life, and the advantage that can reuse; Can replace the hollow rod or the oil pipe that are used to inject high-temperature-hot-water in the existing viscous crude heating operation; And the vacuum tube insulation construction high insulating effect of interior circulation can reduce the viscosity of crude oil, and can prevent wax deposition; And thereby heat medium avoids sneaking in the crude oil through self-loopa, so crude oil yield and quality all are improved largely.
Description of drawings
Fig. 1 is the recover the oil structural representation of special-purpose vacuum heat-preserving circulation pipe of oil field;
Fig. 2 is the structural representation of vacuum heat-preserving tube 2 among Fig. 1;
Fig. 3 is the structural representation of hollow outer tube 1 among Fig. 1;
Among the figure: 1, hollow outer tube, 2, vacuum heat-preserving tube, 3-4, sealing ring, 5, the male thread joint, 6, jackscrew, 7, outer tube, 8, interior pipe, 9, spacer ring, 10, nut, 11, the box thread joint, 12 (12-1,12-2) step, 13, boss.
The specific embodiment
Below in conjunction with accompanying drawing and instantiation the present invention is described further, but not as to qualification of the present invention.
Shown in accompanying drawing 1-3, a kind of oil field special-purpose vacuum heat-preserving circulation pipe that recovers the oil comprises the vacuum heat-preserving tube 2 of hollow outer tube 1 and interior installation thereof forming the annular space chamber between the two; Hollow outer tube 1 two ends are respectively equipped with male thread joint and box thread joint, and wherein the male thread joint is provided with sealing ring 3; The vacuum heat-preserving tube two ends are respectively equipped with male thread joint 5 and are the double-layer vacuum insulation construction with box thread joint 11, centre, and wherein male thread joint 5 is provided with sealing ring 4, pipe 8 and outer tube 7 in the double-layer vacuum insulation construction comprises, spacer ring 9 spaced apart between the two.The syndeton of hollow outer tube 1 and vacuum heat-preserving tube 2 is: be processed with step 12-1 and 12-2 respectively on the inwall at hollow outer tube 1 two ends; The male thread joint 5 of vacuum heat-preserving tube 2 one ends is provided with to be equipped with step 12-2 on the box thread joint 11 with the boss 13 of step 12-1 matching and fixing, the other end and cooperates fastening nut 10; Boss 13 be provided with the flow path groove that is communicated with the annular space chamber, be communicated with vacuum layer between outer tube 8 and the interior pipe 7 vacuumize hole, 6 sealings of Kong Shangyong jackscrew; During installation, the male thread tip side of vacuum heat-preserving tube 2 from hollow outer tube 1 penetrated wherein, make boss 13 and step 12-1 against, nut 10 is fastened on the step 12-2 through instrument at the box thread tip side of hollow outer tube 1.
The many oil fields that the assemble special-purpose vacuum heat-preserving circulation pipe that recovers the oil is connected through screw thread successively; The tube chamber of pipe 7, flow path groove and annular space chamber form the circulation communication passage in making, and down to the purpose well depth, surface pump is injected into the down-hole with high-temperature medium through the interior pipe 7 in the vacuum heat-preserving tube 2 then; Return through annular space chamber and flow path groove between vacuum heat-preserving tube 2 and the hollow outer tube 1 again; Thereby pass to crude oil to heat, make its viscosity reduction or prevent wax deposition, improve crude output.
This programme proves through field test: utilize oil well associated gas heat cycles medium, for oil well heating viscosity reduction, can save a large amount of electric power.Because the pipe thermal insulation is good in the vacuum, can effectively pass to the stratum to heat, reduces viscosity of crude, 1.5 times of the jig frequencies of raising oil pumper extend manufacture cycle 50%, improve well yield greatly.After the hollow rod wearing and tearing are scrapped, unload lower nut, pipe can repeat to be installed in the new hollow rod in taking out, and is cost-saved more than 30%.
Claims (4)
1. an oil field special-purpose vacuum heat-preserving circulation pipe that recovers the oil comprises the hollow outer tube, it is characterized in that: be provided with vacuum heat-preserving tube in the hollow outer tube, and form the annular space chamber between the two; The two ends of described vacuum heat-preserving tube are respectively equipped with joint, the centre is the double-layer vacuum insulation construction, are equipped with flow path groove on the described joint, and the tube chamber of flow path groove, annular space chamber and vacuum heat-preserving tube forms the circulation communication passage.
2. the oil field according to claim 1 special-purpose vacuum heat-preserving circulation pipe that recovers the oil, it is characterized in that: the joint of at least one end of said vacuum heat-preserving tube is provided with and vacuumizes the hole, which is provided with plug; Be provided with spacer ring between the interior pipe of said double-layer vacuum insulation construction and the outer tube.
3. special-purpose vacuum heat-preserving circulation pipe recovers the oil in oil field according to claim 1 and 2; It is characterized in that: be equipped with step on the inwall at said hollow outer tube two ends; One end joint of said vacuum heat-preserving tube be provided with the boss of said step matching and fixing, other end joint on be equipped with described step and cooperate fastening nut, described flow path groove is located at respectively on boss and the nut.
4. the oil field according to claim 3 special-purpose vacuum heat-preserving circulation pipe that recovers the oil, it is characterized in that: described joint is the public box thread joint that cooperatively interacts, and wherein the 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 true CN102704867A (en) | 2012-10-03 |
| CN102704867B CN102704867B (en) | 2015-01-21 |
Family
ID=46897894
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102704867B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134093A (en) * | 2015-08-31 | 2015-12-09 | 东营新佳环保技术开发有限公司 | Inner circulation and insulation oil sucking pipe |
| 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 |
| CN105464643A (en) * | 2014-09-12 | 2016-04-06 | 中国石油天然气股份有限公司 | Ultralow-temperature-resistant circuit protecting structure of downhole tester |
| CN107166137A (en) * | 2017-07-05 | 2017-09-15 | 中国石油大学(北京) | Geothermal well double-layered vacuum heat-insulation structure and its application method |
Citations (8)
| 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 |
| US20060048935A1 (en) * | 2002-12-16 | 2006-03-09 | Einar Kristiansen | Casing with isolated annular space |
| 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 |
-
2012
- 2012-06-08 CN CN201210186559.9A patent/CN102704867B/en active Active
Patent Citations (8)
| 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 |
| US20060048935A1 (en) * | 2002-12-16 | 2006-03-09 | Einar Kristiansen | Casing with isolated annular space |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464643A (en) * | 2014-09-12 | 2016-04-06 | 中国石油天然气股份有限公司 | Ultralow-temperature-resistant circuit protecting structure of downhole tester |
| CN105134093A (en) * | 2015-08-31 | 2015-12-09 | 东营新佳环保技术开发有限公司 | Inner circulation and insulation oil sucking pipe |
| 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 |
| CN107166137A (en) * | 2017-07-05 | 2017-09-15 | 中国石油大学(北京) | Geothermal well double-layered vacuum heat-insulation structure and its application method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102704867B (en) | 2015-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202578543U (en) | Vacuum thermal insulation circulating pipe | |
| CN102704867A (en) | Vacuum heat-preservation circulating pipe special for oil production of oilfield | |
| CN104847322A (en) | Method for improving recovery efficiency for deep common thickened oil water drive-converting into-steam flooding | |
| CN103470239B (en) | A kind of continuous fracturing technology method of dragging with pressure | |
| CN104653129A (en) | Method for washing screw pumping well | |
| CN204327030U (en) | Thermal extraction casing head easy to assemble and thermal production well wellhead assembly | |
| CN202348264U (en) | Fastening structure of ultrasonic transducer | |
| CN103452496A (en) | Injection-production integrated automatic switching production joint for thick oil thermal production well | |
| CN201507281U (en) | Hollow sucker rod well flushing device | |
| CN102562029A (en) | Method for protecting ultrasonic transducer from rotary installation and ultrasonic transducer fastening structure | |
| CN103161428B (en) | Improve method and the structure of oil well of oil well exit oil temperature | |
| CN101832108A (en) | Vacuum oil tubing coupling | |
| CN205714136U (en) | A kind of down-hole multilevel waterpower de-plugging supercharger | |
| CN105275422A (en) | Thermal recovery casing head | |
| CN203948067U (en) | Casing head syndeton | |
| CN104712298A (en) | Vacuum heating oil pipe | |
| CN202187747U (en) | Tubular magnetic wax-resisting and viscosity breaking device for oil well | |
| CN203685055U (en) | Hollow split type heat carrier sucker rod | |
| CN201730553U (en) | Expansion pipe column for petroleum drill | |
| CN206000473U (en) | Vacuum heat-insulation sucker rod | |
| CN201193602Y (en) | Composite selective mining pump with rod pump and electric submersible pump | |
| CN202108480U (en) | Constant pressure gas discharge wellhead device of oil well sleeve | |
| CN101289933A (en) | Thick oil well bore heating and viscosity reducing hot extraction method and apparatus | |
| CN204960909U (en) | Vacuum heating oil pipe | |
| CN205618340U (en) | Two effect oil -well pumps that no pole recovered oil and uses |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
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. |
|
| CP01 | Change in the name or title of a patent holder | ||
| 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 |
|
| CB03 | Change of inventor or designer information | ||
| 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 |
|
| TR01 | Transfer of patent right |