CN109630034A - Insulated tubing and its manufacturing method with resistance hydrogen impregnation coating - Google Patents
Insulated tubing and its manufacturing method with resistance hydrogen impregnation coating Download PDFInfo
- Publication number
- CN109630034A CN109630034A CN201811383599.6A CN201811383599A CN109630034A CN 109630034 A CN109630034 A CN 109630034A CN 201811383599 A CN201811383599 A CN 201811383599A CN 109630034 A CN109630034 A CN 109630034A
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- Prior art keywords
- inner tube
- tube
- insulated tubing
- heat
- coating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Thermal Insulation (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention relates to a kind of insulated tubings and its manufacturing method with resistance hydrogen impregnation coating, belong to petroleum gas drilling and extracting equipment field.The insulated tubing, including outer tube, inner tube and heat-barrier material, inner tube and outer tube are socketed, and inner tube includes tube body and the spelter coating for being overlying on outer surface of tube body, has vacuum chamber between inner tube and outer tube, and heat-barrier material is arranged on the outer wall of inner tube；Manufacturing method is the following steps are included: 1) inner tube both ends thicken；2) outer wall of inner tube applies galvanizing coating；3) inner tube keeps the temperature 1-2h between 300-400 DEG C, air-cooled, wraps up heat-barrier material in inner tube outer surface；4) inner and outer tubes suit and welding, obtain prestressing force insulated tubing；5) annular space between the inner and outer tubes of prestressing force insulated tubing is evacuated and hermetically sealed；6) outer tube both ends process screw thread.Insulated tubing heat-proof quality prepared by the present invention is good, the heat-insulated service life is long, excellent working performance；Its manufacturing method, it is scientific and reasonable, simple and easy.
Description
Technical field
The present invention relates to a kind of insulated tubings and its manufacturing method with resistance hydrogen impregnation coating, belong to petroleum gas drilling
Equipment field.
Background technique
With the failure of conventional oil resource, heavy oil resources will be that the important of the following crude oil production takes over battlefield, heavy oil
Exploitation must carry out thermally insulating the borehole with heat-insulated tubing and casing.Current heat-insulated tubing and casing according to or referring to Chinese patent (application number
97115719.7) one kind disclosed in " vacuum heat-insulation tubing and casing and its manufacturing process " is produced, and product is by box cupling, heat shield liner
The compositions such as set, outer tube, inner tube, thermal insulation layer, wiper block, suction hydrogen agent.The heat-insulated tubing and casing of this kind of technique production by by inner tube and
The mode that annular space between outer tube vacuumizes reduces convective heat transfer speed, substantially increases the heat-proof quality of heat-insulated tubing and casing.
But this good heat-insulated tubing and casing of heat-proof quality is in application process, with steam injection period and steam injection time
Increase, the heat insulation of heat-insulated tubing and casing reduces rapidly, and insulated tubing is caused to scrap the reduction with heavy crude heat extraction efficiency.It improves
The heat-insulated service life of insulated tubing becomes the critical issue for reducing heavy crude heat extraction cost.
Summary of the invention
According to the above-mentioned deficiencies in the prior art, that the object of the present invention is to provide a kind of heat-proof qualities is good, the heat-insulated service life is long,
The insulated tubing with resistance hydrogen impregnation coating of excellent working performance；It is scientific and reasonable, simple easy the present invention also provides its manufacturing method
Row.
The insulated tubing with resistance hydrogen impregnation coating of the present invention, including outer tube, inner tube and heat-barrier material, inner tube and outer
Pipe socket, inner tube include tube body and the spelter coating for being overlying on outer surface of tube body, have vacuum chamber, heat-barrier material between inner tube and outer tube
It is arranged on the outer wall of inner tube.
Wherein:
The spelter coating with a thickness of 100-150 μm.
Preferably, the spelter coating with a thickness of 100 μm.
The manufacturing method of the insulated tubing with resistance hydrogen impregnation coating of the present invention, using following steps:
1) inner tube both ends thicken；
2) outer wall of inner tube applies galvanizing coating；
3) inner tube keeps the temperature 1-2h between 300-400 DEG C, air-cooled, wraps up heat-barrier material in inner tube outer surface；
4) inner and outer tubes suit and welding, obtain prestressing force insulated tubing；
5) annular space between the inner and outer tubes of prestressing force insulated tubing is evacuated and hermetically sealed；
6) outer tube both ends process screw thread.
In step 1), inner tube both ends thicken, convenient for the inner and outer tubes suit of step 4) and welding.Thickening amount is in outer tube
The half of the difference of diameter and inner tube overall diameter.
In step 2), spelter coating is prepared by electric arc thermal spray processes.
Mixed gas of the carrier gas of the electric-arc thermal spray coating using one or both of nitrogen or argon gas, the pressure of gas
Power is 0.6-0.8MPa.
After annular space between the inner and outer tubes of prestressing force insulated tubing vacuumizes, that is, form vacuum chamber.
The principle of the present invention:
Through many years research and analysis, the reason of causing the heat insulation of insulated tubing to reduce rapidly, be because of high-temperature vapor
With the contact of heavy oil wells liquid medium and insulated tubing tube body, a large amount of H atom can be generated.In the environment of high temperature and pressure, H atom
The inner tube that insulated tubing can quickly be penetrated, which penetrates into the annular space between inner and outer tubes, forms hydrogen, causes true in annular space
Reciprocal of duty cycle reduces and the thermal coefficient of hydrogen is high, so that the heat insulation of insulated tubing be made to be substantially reduced, causes insulated tubing
Scrap the reduction with heavy crude heat extraction efficiency.Spelter coating is prepared by the outer surface in inner tube, and is protected through being heated between 300-400 DEG C
Temperature processing improves the consistency of spelter coating, penetrates into inner and outer pipes annular space to play the role of barrier hydrogen atom.
The insulated tubing with resistance hydrogen impregnation coating of the invention, when in use, the outer tube of insulated tubing is connected with box cupling
With and seal constitute insulation oil tubing string, be used for thickened oil recovery.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention prepares hydrogen in the inner tube outer surface of insulated tubing and seeps barrier layer, to delay and prevent hydrogen to heat-insulated
The scattering and permeating of oil pipe inner and outer pipes annular space, keeps the heat insulation of insulated tubing the longer time, extends insulated tubing
Service life, to substantially reduce the cost of thickened oil recovery.
2, manufacturing method of the present invention, it is scientific and reasonable, simple and easy.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the use state diagram of insulated tubing of the present invention；
In figure: 1, outer tube；2, inner tube；3, heat-barrier material；4, spelter coating；5, vacuum chamber.
Specific embodiment
The embodiment of the present invention is described further with reference to the accompanying drawing:
Embodiment 1
As shown in Figure 1, the insulated tubing with resistance hydrogen impregnation coating, including outer tube 1, inner tube 2 and heat-barrier material 3,
Inner tube 2 and outer tube 1 are socketed, and inner tube 2 includes tube body and the spelter coating 4 for being overlying on outer surface of tube body, are had between inner tube 2 and outer tube 1
Vacuum chamber 5, heat-barrier material 3 are arranged on the outer wall of inner tube 2.
Its manufacturing method, comprising the following steps:
1) inner tube both ends thicken；
2) outer wall by electric arc thermal spray processes in inner tube prepares 100 μm of spelter coatings；
3) inner tube is air-cooled in 300 DEG C of heat preservation 2h, wraps up heat-barrier material in inner tube outer surface；
4) inner and outer tubes suit and welding, obtain prestressing force insulated tubing；
5) annular space between the inner and outer tubes of prestressing force insulated tubing is evacuated and hermetically sealed；
6) screw thread is processed at outer tube both ends.
Wherein, when electric arc thermal spray processes prepare spelter coating, the carrier gas of electric arc spraying uses nitrogen, and the pressure of gas is
0.6MPa。
Embodiment 2
The structure of the insulated tubing for having resistance hydrogen impregnation coating is the same as embodiment 1.
Its manufacturing method, comprising the following steps:
1) inner tube both ends thicken；
2) outer wall by electric arc thermal spray processes in inner tube prepares 120 μm of spelter coatings；
3) inner tube is air-cooled in 330 DEG C of heat preservation 1.5h, wraps up heat-barrier material in inner tube outer surface；
4) inner and outer tubes suit and welding, obtain prestressing force insulated tubing；
5) annular space between the inner and outer tubes of prestressing force insulated tubing is evacuated and hermetically sealed；
6) screw thread is processed at outer tube both ends.
Wherein, when electric arc thermal spray processes prepare spelter coating, the carrier gas of electric arc spraying uses argon gas, and the pressure of gas is
0.8MPa。
Embodiment 3
The structure of the insulated tubing for having resistance hydrogen impregnation coating is the same as embodiment 1.
Its manufacturing method, comprising the following steps:
1) inner tube both ends thicken；
2) outer wall by electric arc thermal spray processes in inner tube prepares 150 μm of spelter coatings；
3) inner tube is air-cooled in 350 DEG C of heat preservation 1.5h, wraps up heat-barrier material in inner tube outer surface；
4) inner and outer tubes suit and welding, obtain prestressing force insulated tubing；
5) annular space between the inner and outer tubes of prestressing force insulated tubing is evacuated and hermetically sealed；
6) screw thread is processed at outer tube both ends.
Wherein, when electric arc thermal spray processes prepare spelter coating, the carrier gas of electric arc spraying uses the mixed gas of nitrogen and argon gas,
The pressure of gas is 0.7MPa.
Embodiment 4
The structure of the insulated tubing for having resistance hydrogen impregnation coating is the same as embodiment 1.
Its manufacturing method, comprising the following steps:
1) inner tube both ends thicken；
2) outer wall by electric arc thermal spray processes in inner tube prepares 130 μm of spelter coatings；
3) inner tube is air-cooled in 370 DEG C of heat preservation 1.5h, wraps up heat-barrier material in inner tube outer surface；
4) inner and outer tubes suit and welding, obtain prestressing force insulated tubing；
5) annular space between the inner and outer tubes of prestressing force insulated tubing is evacuated and hermetically sealed；
6) screw thread is processed at outer tube both ends.
Wherein, when electric arc thermal spray processes prepare spelter coating, the carrier gas of electric arc spraying uses nitrogen, and the pressure of gas is
0.6MPa。
Embodiment 5
The structure of the insulated tubing for having resistance hydrogen impregnation coating is the same as embodiment 1.
Its manufacturing method, comprising the following steps:
1) inner tube both ends thicken；
2) outer wall by electric arc thermal spray processes in inner tube prepares 140 μm of spelter coatings；
3) inner tube is air-cooled in 400 DEG C of heat preservation 1h, wraps up heat-barrier material in inner tube outer surface；
4) inner and outer tubes suit and welding, obtain prestressing force insulated tubing；
5) annular space between the inner and outer tubes of prestressing force insulated tubing is evacuated and hermetically sealed；
6) screw thread is processed at outer tube both ends.
Wherein, when electric arc thermal spray processes prepare spelter coating, the carrier gas of electric arc spraying uses nitrogen, and the pressure of gas is
0.6MPa。
Comparative example 1
The structure of the insulated tubing for having resistance hydrogen impregnation coating is the same as embodiment 1.
Its manufacturing method, comprising the following steps:
1) inner tube both ends thicken；
2) outer wall by electric arc thermal spray processes in inner tube prepares 130 μm of spelter coatings, wraps up heat-insulated material in inner tube outer surface
Material；
3) inner and outer tubes suit and welding, obtain prestressing force insulated tubing；
4) annular space between the inner and outer tubes of prestressing force insulated tubing is evacuated and hermetically sealed；
5) screw thread is processed at outer tube both ends.
Wherein, when electric arc thermal spray processes prepare spelter coating, the carrier gas of electric arc spraying uses nitrogen, and the pressure of gas is
0.6MPa。
Comparative example 2
The outer surface of tube body of the insulated tubing, inner tube does not have spelter coating, remaining is the same as embodiment 1.
Its manufacturing method, comprising the following steps:
1) inner tube both ends thicken, and wrap up heat-barrier material in inner tube outer surface；
2) inner and outer tubes suit and welding, obtain prestressing force insulated tubing；
3) annular space between the inner and outer tubes of prestressing force insulated tubing is evacuated and hermetically sealed；
4) screw thread is processed at outer tube both ends.
Insulated tubing prepared by the present invention and comparative example insulated tubing are applied to steam flooding well, after 2 years, by SY/T
The apparent heat conductivity of 5324 standard test insulated tubings.1 is shown in Table using the apparent heat conductivity of forward and backward insulated tubing.As it can be seen that this hair
The bright good heat-proof quality of insulated tubing, can keep the longer time.Comparative example 1 has a spelter coating, but due to not by
300-400 DEG C of surface oxidation treatment, resistance hydrogen infiltration effect is poor, and comparative example 2 does not hinder hydrogen zincizing coating, and heat-proof quality is using 2 years
After be substantially reduced.
The heat-proof quality of 1 insulated tubing of table
Claims (6)
1. a kind of insulated tubing with resistance hydrogen impregnation coating, including outer tube (1), inner tube (2) and heat-barrier material (3), inner tube (2) and
Outer tube (1) socket, it is characterised in that: inner tube (2) includes tube body and the spelter coating (4) for being overlying on outer surface of tube body, inner tube (2) with outside
Managing between (1) has vacuum chamber (5), and heat-barrier material (3) is arranged on the outer wall of inner tube (2).
2. the insulated tubing with resistance hydrogen impregnation coating according to claim 1, it is characterised in that: the spelter coating (4)
With a thickness of 100-150 μm.
3. the insulated tubing with resistance hydrogen impregnation coating according to claim 1, it is characterised in that: the spelter coating (4)
With a thickness of 100 μm.
4. a kind of manufacturing method of any insulated tubing with resistance hydrogen impregnation coating of claim 1-3, it is characterised in that:
Using following steps:
1) inner tube both ends thicken；
2) outer wall of inner tube applies galvanizing coating；
3) inner tube keeps the temperature 1-2h between 300-400 DEG C, air-cooled, wraps up heat-barrier material in inner tube outer surface；
4) inner and outer tubes suit and welding, obtain prestressing force insulated tubing；
5) annular space between the inner and outer tubes of prestressing force insulated tubing is evacuated and hermetically sealed；
6) outer tube both ends process screw thread.
5. manufacturing method according to claim 4, it is characterised in that: in step 2), spelter coating passes through electric arc thermal spray processes
Preparation.
6. manufacturing method according to claim 5, it is characterised in that: the carrier gas of the electric-arc thermal spray coating using nitrogen or
One or both of argon gas is 0.6-0.8MPa with the mixed gas of arbitrary proportion, the pressure of gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383599.6A CN109630034A (en) | 2018-11-20 | 2018-11-20 | Insulated tubing and its manufacturing method with resistance hydrogen impregnation coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383599.6A CN109630034A (en) | 2018-11-20 | 2018-11-20 | Insulated tubing and its manufacturing method with resistance hydrogen impregnation coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109630034A true CN109630034A (en) | 2019-04-16 |
Family
ID=66068702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811383599.6A Pending CN109630034A (en) | 2018-11-20 | 2018-11-20 | Insulated tubing and its manufacturing method with resistance hydrogen impregnation coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109630034A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415752A (en) * | 2022-09-28 | 2022-12-02 | 包头钢铁（集团）有限责任公司 | Method for processing and manufacturing rare earth steel special threaded pipe body |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392607A (en) * | 2011-07-22 | 2012-03-28 | 宝鸡石油钢管有限责任公司 | Continuous heat insulating oil pipe and manufacturing method thereof |
| 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 |
| CN104565576A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Pipeline and pipeline with coupling |
| CN205135442U (en) * | 2015-12-02 | 2016-04-06 | 胜利油田胜机石油装备有限公司 | Interior heat preservation high vacuum insulation oil pipe that scribbles |
-
2018
- 2018-11-20 CN CN201811383599.6A patent/CN109630034A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392607A (en) * | 2011-07-22 | 2012-03-28 | 宝鸡石油钢管有限责任公司 | Continuous heat insulating oil pipe and manufacturing method thereof |
| CN104565576A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Pipeline and pipeline with coupling |
| 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 |
| CN205135442U (en) * | 2015-12-02 | 2016-04-06 | 胜利油田胜机石油装备有限公司 | Interior heat preservation high vacuum insulation oil pipe that scribbles |
Non-Patent Citations (1)
| Title |
|---|
| 曹江利: "氢在电镀锌层中的扩散渗透性的研究", 《电化学》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415752A (en) * | 2022-09-28 | 2022-12-02 | 包头钢铁（集团）有限责任公司 | Method for processing and manufacturing rare earth steel special threaded pipe body |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190416 |
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| RJ01 | Rejection of invention patent application after publication |