CN202990889U - Coating vacuum heat-insulating oil pipe - Google Patents
Coating vacuum heat-insulating oil pipe Download PDFInfo
- Publication number
- CN202990889U CN202990889U CN 201220625414 CN201220625414U CN202990889U CN 202990889 U CN202990889 U CN 202990889U CN 201220625414 CN201220625414 CN 201220625414 CN 201220625414 U CN201220625414 U CN 201220625414U CN 202990889 U CN202990889 U CN 202990889U
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- heat
- insulated tubing
- insulating oil
- oil pipe
- coating
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Abstract
The utility model relates to a coating vacuum heat-insulating oil pipe, in particular to a coating vacuum heat-insulating oil pipe. A connecting hoop of the coating vacuum heat-insulating oil pipe is connected with a heat-insulating oil pipe outer pipe and is sealed through a connecting hoop seal ring, and a heat-insulating system is arranged between the heat-insulating oil pipe outer pipe and a heat-insulating oil pipe inner pipe. An anticorrosive coating is plated on an inner wall of the heat-insulating oil pipe inner pipe, an outer wall of the heat-insulating oil pipe outer pipe and a connecting hoop thread and at the position of a connecting hoop outer wall by electrochemical plating. Corrosion of a whole heat-insulating oil pipe column is reduced, thread gluing is avoided, steam injection and oil exploitation effects are improved, and exploitation cost of thickened oil is reduced. The shortcoming that an existing heat-insulating oil pipe is corroded easily so that heat-insulating effect is lost is overcome.
Description
Technical field:
The utility model 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 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.
The utility model content:
The technical problems to be solved in the utility model is to provide a kind of Coatings in Vacuum insulated tubing, and this device has realized reducing the corrosion in 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.
Technical solution adopted in the utility model 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 insulated tubing inner tube, the place all is 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.
Corrosion-inhibiting coating is nickel alloy plating layer or chromium-base alloy coating or nickel-base alloy and chromium-base alloy coating.
The beneficial effects of the utility model are: the utility model is due to the mode that has adopted at insulated tubing inner tube wall, insulated tubing outer tube outer wall, box cupling screw thread, box cupling outer wall place all by electrochemistry plating one deck corrosion-inhibiting coating, thereby has a function that reduces the corrosion in 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 utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Accompanying drawing is structural representation of the present utility model.
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 insulated tubing inner tube 6,1 outer wall place all is 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.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 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, above about specific descriptions of the present utility model, only for the utility model being described and being not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.
Claims (4)
1. a Coatings in Vacuum insulated tubing, comprise 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 passes through box cupling sealing ring (3) and seals, be provided with insulation system (5) between insulated tubing outer tube (4) and insulated tubing inner tube (6), the outer wall place all is 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).
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 |
|---|---|---|---|
| CN 201220625414 CN202990889U (en) | 2012-11-23 | 2012-11-23 | Coating vacuum heat-insulating oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220625414 CN202990889U (en) | 2012-11-23 | 2012-11-23 | Coating vacuum heat-insulating oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202990889U true CN202990889U (en) | 2013-06-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220625414 Expired - Fee Related CN202990889U (en) | 2012-11-23 | 2012-11-23 | Coating vacuum heat-insulating oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202990889U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953688A (en) * | 2012-11-23 | 2013-03-06 | 中国石油集团渤海石油装备制造有限公司 | Heat insulation oil tube with vacuum coating |
| CN104712298A (en) * | 2015-03-23 | 2015-06-17 | 朱长林 | Vacuum heating oil pipe |
| CN105178877A (en) * | 2015-09-25 | 2015-12-23 | 江苏联冠高新技术有限公司 | Composite thermal insulation 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 |
| CN110762211A (en) * | 2019-11-22 | 2020-02-07 | 李国栋 | Oil well is with thermal-insulated heat preservation abrasionproof oil pipe pin end sealing device |
| CN113108140A (en) * | 2021-04-26 | 2021-07-13 | 葫芦岛龙源采油配套设备有限公司 | Heat insulation oil pipe |
-
2012
- 2012-11-23 CN CN 201220625414 patent/CN202990889U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953688A (en) * | 2012-11-23 | 2013-03-06 | 中国石油集团渤海石油装备制造有限公司 | Heat insulation oil tube with vacuum coating |
| CN104712298A (en) * | 2015-03-23 | 2015-06-17 | 朱长林 | Vacuum heating oil pipe |
| CN105178877A (en) * | 2015-09-25 | 2015-12-23 | 江苏联冠高新技术有限公司 | Composite thermal insulation 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 |
| 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 |
| CN110762211A (en) * | 2019-11-22 | 2020-02-07 | 李国栋 | Oil well is with thermal-insulated heat preservation abrasionproof oil pipe pin end sealing device |
| CN110762211B (en) * | 2019-11-22 | 2024-06-11 | 李国栋 | Heat-insulating wear-proof oil pipe pin end sealing device for oil well |
| CN113108140A (en) * | 2021-04-26 | 2021-07-13 | 葫芦岛龙源采油配套设备有限公司 | Heat insulation oil pipe |
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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: 20201027 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20201123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |