CN102953688A - Heat insulation oil tube with vacuum coating - Google Patents
Heat insulation oil tube with vacuum coating Download PDFInfo
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- CN102953688A CN102953688A CN201210485532XA CN201210485532A CN102953688A CN 102953688 A CN102953688 A CN 102953688A CN 201210485532X A CN201210485532X A CN 201210485532XA CN 201210485532 A CN201210485532 A CN 201210485532A CN 102953688 A CN102953688 A CN 102953688A
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- heat insulation
- tube
- insulated tubing
- insulation oil
- box cupling
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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to a heat insulation oil tube of an oil field, in particular to a heat insulation oil tube with a vacuum coating. A coupling of the heat insulation oil tube and an outer tube of the heat insulation oil tube are connected, and are sealed through a coupling sealing ring, a heat insulation system is arranged between the outer tube and an inner tube of the heat insulation oil tube, and an anti-corrosion layer is respectively plated on an inner wall of the inner tube of the heat insulation oil tube, an outer wall of the outer tube of the heat insulation oil tube, a thread of the coupling and an outer wall of the coupling in an electrochemical manner. According to the invention, the corrosion to a tube column of the heat insulation oil tube is reduced, the phenomenon that the thread is stuck together is prevented, the steam injection and oil sampling effects are improved, the thickened oil recovery cost can be saved, and the defect that the existing heat insulation oil tube is easily corroded so as to lose the heat insulation effect can be overcome.
Description
Technical field:
The present invention relates to a kind of oil field insulated tubing, particularly a kind of Coatings in Vacuum insulated tubing.
Background technology:
The insulated tubing tubing string is steam injection tubing string the most frequently used in the heavy crude heat extraction technique, and insulated tubing is that bimetallic tube is inner and outer pipe.Conventional insulated tubing inner and outer pipes all adopts API5CT standard oil sleeve pipe.In oil field operation, often there are hydrogen sulfide, sulfate reducing bacteria, chemical flooding hydrodynamic, three to exist without Korrosionsmediums such as combination flooding hydrodynamic, high temperature oxygen, carbon dioxide, chlorions in the insulated tubing tubing string, conventional insulated tubing does not have anticorrosive function, insulated tubing is under the long-term work state, weld seam, inner tube wall, outer tube outer wall be being corroded property dielectric corrosion very easily, thereby cause weld cracking, inner and outer pipes to be corroded, insulated tubing loses function of heat insulation.
Summary of the invention:
The technical problem to be solved in the present invention provides a kind of Coatings in Vacuum insulated tubing, and this device has realized reducing the corrosion in the whole insulated tubing tubing string, prevents the generation of Thread-sticking phenomenon, improves steam injection and oil recovery effect, saves the thickened oil recovery cost.Overcome existing insulated tubing and easily be corroded, lost the deficiency of heat insulating effect.
The technical solution used in the present invention is: a kind of Coatings in Vacuum insulated tubing comprises box cupling, box cupling sealing ring, insulated tubing outer tube, insulation system and insulated tubing inner tube; Box cupling is connected with the insulated tubing outer tube and seals by the box cupling sealing ring, be provided with insulation system between insulated tubing outer tube and the insulated tubing inner tube, all be coated with one deck corrosion-inhibiting coating by electrochemistry at insulated tubing inner tube wall, insulated tubing outer tube outer wall, box cupling screw thread, box cupling outer wall place.
Corrosion-inhibiting coating is nickel alloy plating layer or chromium-base alloy coating or nickel-base alloy and chromium-base alloy coating.
The invention has the beneficial effects as follows: the present invention is owing to adopted at insulated tubing inner tube wall, insulated tubing outer tube outer wall, box cupling screw thread, box cupling outer wall place the mode of all plating one deck corrosion-inhibiting coating by the electrochemistry plating, thereby has a function that reduces the corrosion in the whole insulated tubing tubing string, prevent the generation of Thread-sticking phenomenon, improve steam injection and oil recovery effect, save the thickened oil recovery cost.
Description of drawings:
The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
Accompanying drawing is structural representation of the present invention.
The specific embodiment:
As shown in drawings, a kind of Coatings in Vacuum insulated tubing comprises box cupling 1, box cupling sealing ring 3, insulated tubing outer tube 4, insulation system 5 and insulated tubing inner tube 6; Box cupling 1 is connected with insulated tubing outer tube 4 and seals by box cupling sealing ring 3, be provided with insulation system 5 between insulated tubing outer tube 4 and the insulated tubing inner tube 6, all be coated with one deck corrosion-inhibiting coating 2 by electrochemistry at insulated tubing inner tube 6 inwalls, insulated tubing outer tube 4 outer walls, box cupling 1 screw thread, box cupling 1 outer wall place.Corrosion-inhibiting coating 2 is nickel alloy plating layer or chromium-base alloy coating or nickel-base alloy and chromium-base alloy coating, that such coating has is corrosion-resistant, wear-resisting, high temperature resistant, adhesion strong, light, coating evenly, need not the characteristics such as reprocessing, non-environmental-pollution after the plating.Not only acidproof but also the alkaline-resisting and salt (except nitric acid, the concentrated sulfuric acid) of this coating, the stainless steel of the material such as alternative 3Cr, 9Cr, 13Cr and common model.This coating hardness is high, and general plated state hardness can reach HV436-509(HRC45-50), after 400 ℃ of heat treatment hardness up to HV660-1000(HRC62-69).
This coating and insulated tubing body are through the electrochemistry plating, and bond strength can reach 300-400Mpa, are electrodeposited chromium 2-3 times, are ten to 100 times of common coating, the coating shedding phenomenon can not occur.This corrosion-inhibiting coating operating temperature can be between-80 ℃ to+700 ℃, and the insulated tubing operating temperature is-20 ℃ to+370 ℃, and this Coatings in Vacuum insulated tubing can satisfy the daily steam injection in oil field, oil recovery requirement.
By this technical scheme, insulated tubing inner tube wall, girth joint, outer tube outer wall can not corroded by the oil field Korrosionsmedium, and body external screw thread, coupling inner thread intensity enhancing, have effectively prevented the generation of Thread-sticking phenomenon.It is lower that this technical scheme and the anticorrosive tubing such as 3Cr, 9Cr, 13Cr are compared cost, enhances productivity, and saves cost.
Be understandable that, more than about specific descriptions of the present invention, only for the present invention being described and being not to be subject to the described technical scheme of the embodiment of the invention, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as satisfy, all within protection scope of the present invention.
Claims (4)
1. a Coatings in Vacuum insulated tubing comprises box cupling (1), box cupling sealing ring (3), insulated tubing outer tube (4), insulation system (5) and insulated tubing inner tube (6); It is characterized in that: box cupling (1) is connected with insulated tubing outer tube (4) and seals by box cupling sealing ring (3), be provided with insulation system (5) between insulated tubing outer tube (4) and the insulated tubing inner tube (6), all be coated with one deck corrosion-inhibiting coating (2) by electrochemistry at insulated tubing inner tube (6) inwall, insulated tubing outer tube (4) outer wall, box cupling (1) screw thread, box cupling (1) outer wall place.
2. according to Coatings in Vacuum insulated tubing claimed in claim 1, it is characterized in that: described corrosion-inhibiting coating (2) is nickel alloy plating layer.
3. according to Coatings in Vacuum insulated tubing claimed in claim 1, it is characterized in that: described corrosion-inhibiting coating (2) is chromium-base alloy coating.
4. according to Coatings in Vacuum insulated tubing claimed in claim 1, it is characterized in that: described corrosion-inhibiting coating (2) is nickel-base alloy and chromium-base alloy coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210485532XA CN102953688A (en) | 2012-11-23 | 2012-11-23 | Heat insulation oil tube with vacuum coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210485532XA CN102953688A (en) | 2012-11-23 | 2012-11-23 | Heat insulation oil tube with vacuum coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102953688A true CN102953688A (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210485532XA Pending CN102953688A (en) | 2012-11-23 | 2012-11-23 | Heat insulation oil tube with vacuum coating |
Country Status (1)
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| CN (1) | CN102953688A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883263A (en) * | 2014-04-23 | 2014-06-25 | 中国石油大学(北京) | Aerogel composite heat insulation sleeve |
| 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 |
| CN105201416A (en) * | 2015-09-08 | 2015-12-30 | 宝鸡石油钢管有限责任公司 | Titanium alloy heat-insulation oil pipe and producing method thereof |
| CN105275406A (en) * | 2014-06-19 | 2016-01-27 | 中国石油化工股份有限公司 | Heat insulation well completion device and method |
| CN106285502A (en) * | 2016-09-18 | 2017-01-04 | 中国石油天然气股份有限公司 | A kind of composite coating heat insulating and corrosion oil pipe |
| 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 |
| CN107246243A (en) * | 2017-02-13 | 2017-10-13 | 曹俊杰 | A kind of eccentric abrasion prevention anticorrosion heat-insulation and heat-preservation oil pipe for improving well mouth of oil well temperature |
| CN107842348A (en) * | 2016-09-20 | 2018-03-27 | 中国石油化工股份有限公司 | Ultradeep well multistage tail tube hanging gas injection completion tubular column and method |
| CN108302284A (en) * | 2018-02-06 | 2018-07-20 | 中国石油工程建设有限公司华北分公司 | A kind of underground heat-insulated oil pipe and preparation method thereof |
| CN108661570A (en) * | 2018-06-07 | 2018-10-16 | 盘锦辽河油田金环实业有限责任公司 | A kind of ocean insulated tubing |
| 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 |
| CN110374520A (en) * | 2019-07-18 | 2019-10-25 | 中国石油天然气集团有限公司 | A kind of double combination casing and its assembly method with girth joint |
| CN112065292A (en) * | 2020-09-09 | 2020-12-11 | 席赫 | Crude oil extraction pipe |
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2012
- 2012-11-23 CN CN201210485532XA patent/CN102953688A/en active Pending
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| US20060108110A1 (en) * | 2004-11-24 | 2006-05-25 | Mckeen Laurence W | Coated tools for use in oil well pipes |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883263A (en) * | 2014-04-23 | 2014-06-25 | 中国石油大学(北京) | Aerogel composite heat insulation sleeve |
| CN105275406A (en) * | 2014-06-19 | 2016-01-27 | 中国石油化工股份有限公司 | Heat insulation well completion device and method |
| CN105275406B (en) * | 2014-06-19 | 2017-12-26 | 中国石油化工股份有限公司 | Heat-insulated completion system and heat-insulated completion method |
| 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 |
| CN105201416A (en) * | 2015-09-08 | 2015-12-30 | 宝鸡石油钢管有限责任公司 | Titanium alloy heat-insulation oil pipe and producing method thereof |
| 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 |
| CN106285502B (en) * | 2016-09-18 | 2019-06-11 | 中国石油天然气股份有限公司 | A kind of composite coating heat insulating and corrosion oil pipe |
| CN106285502A (en) * | 2016-09-18 | 2017-01-04 | 中国石油天然气股份有限公司 | A kind of composite coating heat insulating and corrosion oil pipe |
| CN107842348A (en) * | 2016-09-20 | 2018-03-27 | 中国石油化工股份有限公司 | Ultradeep well multistage tail tube hanging gas injection completion tubular column and method |
| CN107246243A (en) * | 2017-02-13 | 2017-10-13 | 曹俊杰 | A kind of eccentric abrasion prevention anticorrosion heat-insulation and heat-preservation oil pipe for improving well mouth of oil well temperature |
| 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 |
| CN108302284A (en) * | 2018-02-06 | 2018-07-20 | 中国石油工程建设有限公司华北分公司 | A kind of underground heat-insulated oil pipe and preparation method thereof |
| CN108661570A (en) * | 2018-06-07 | 2018-10-16 | 盘锦辽河油田金环实业有限责任公司 | A kind of ocean insulated tubing |
| CN110374520A (en) * | 2019-07-18 | 2019-10-25 | 中国石油天然气集团有限公司 | A kind of double combination casing and its assembly method with girth joint |
| CN112065292A (en) * | 2020-09-09 | 2020-12-11 | 席赫 | Crude oil extraction pipe |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130306 |