CN105201416A - Titanium alloy heat-insulation oil pipe and producing method thereof - Google Patents
Titanium alloy heat-insulation oil pipe and producing method thereof Download PDFInfo
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- CN105201416A CN105201416A CN201510563906.9A CN201510563906A CN105201416A CN 105201416 A CN105201416 A CN 105201416A CN 201510563906 A CN201510563906 A CN 201510563906A CN 105201416 A CN105201416 A CN 105201416A
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Abstract
The invention discloses a titanium alloy heat-insulation oil pipe and a producing method thereof. The oil pipe comprises an inner pipe, an outer pipe, a heat-insulation material and centralizing blocks, wherein both the inner pipe and the outer pipe adopt alpha titanium alloy oil pipes with the heat-resistance temperature higher than 500 DEG C, the heat-insulation material winds around the outer wall of the inner pipe, meanwhile, the centralizing blocks are mounted, the inner pipe is sleeved with the outer pipe after being subjected to flaring and head flattening processing, the inner pipe and the outer pipe are arranged concentrically, the inner pipe is subjected to heating extension processing, outer walls of two ends of the inner pipe are welded and sealed with inner walls of two ends of the outer pipe respectively, and an annular space is formed and pumped into high vacuum. The high-temperature resistance and the setting depth of the heat-insulation oil pipe are greatly increased, the heat-insulation oil pipe has very high CO2+H2S+C1<-> corrosion resistance, the heat-insulation capability of the heat-insulation oil pipe is improved, the problem of corrosion failure of the heat-insulation oil pipe and the problem about thickened oil recovery of deep and ultra-deep wells of oil fields are solved, and technical support is provided for safe production of thickened oil.
Description
Technical field:
The invention belongs to OCTG field, relate to a kind of heavy crude heat extraction insulated tubing, especially a kind of titanium alloy insulated tubing and manufacture method thereof.
Background technology:
Insulated tubing be thickened oil recovery important equipment, its structure is inner and outer pipe double-decker.The purposes of insulated tubing injects high temperature and high pressure steam as steam injection system to down-hole, reduces pit shaft thermodynamic loss, and reduce viscosity of thickened oil, improves oil recovery efficiency.Due in oil field operation, in insulated tubing tubing string, there is CO
2, H
2the etchant gases such as S exist, and especially there is serious CO at oil field part heavy oil blocks such as China Liaohe River, triumpies
2etching problem, conventional thermal barrier oil pipe under this corrosive environment, there will be wall thickness reduction or perforation was lost efficacy, and its heat-proof quality is reduced greatly, loses function of heat insulation simultaneously, final application life of reducing insulated tubing.From the angle of corrosion control, containing CO
2, H
2under the corrosive environment such as S, chlorion, the most effective safeguard procedures adopt corrosion resistant alloy tubing, and current existing insulated tubing outer tube and interior pipe adopt the steel oil pipe of API5CT standard usually, result in a series of CO
2corrosion accident, causes huge economic loss to field produces.Therefore, exploitation corrosion resistance is better, and the insulated tubing of resistance to elevated temperatures excellence has great economic worth.
Current insulated tubing product is mainly based on C-Mn, Cr-Mo steel, and these products can meet the requirement of oil field user substantially.But due to insulated tubing for a long time 300 DEG C-400 DEG C, work under about 17MPa steam pressure, and along with CO
2, H
2s etc. corrode the appearance of well, there has also been higher requirement to the high temperature resistant of insulated tubing and corrosion resistance.Meanwhile, due to the difference of oil reservoirs, the mining depth of viscous crude is also deepened thereupon, and the depth of setting of steel insulated tubing is restricted.High temperature resistant anticorrosion heat insulating oil pipe declared by Baosteel invention in 2007 is specially bright, and the patent No. is 200710038389.9.But the serviceability temperature of the insulated tubing described in above-mentioned patent is 350 DEG C, steam pressure 20MPa.
Summary of the invention:
The object of the invention is to develop a kind of titanium alloy insulated tubing and manufacture method thereof for the problems referred to above.Due to titanium alloy have lightweight, intensity is high, corrosion resistance good and the excellent properties such as high temperature resistant, high temperature creep-resisting, therefore this insulated tubing increases heat-resisting ability and the depth of setting of insulated tubing, and has very strong anti-CO
2+ H
2s+C1
-corrosive power, improves the thermal insulation ability of insulated tubing, solves the corrosion failure problem of insulated tubing and the problem of oil field deep well ultradeep well thickened oil recovery, for the safety in production of viscous crude provides technical support.
The technical scheme taked is: a kind of titanium alloy insulated tubing, comprises interior pipe, outer tube, heat-barrier material and wiper block.It is characterized in that described inner and outer tubes all adopt heat resisting temperature to be greater than the alpha titanium alloy oil pipe of 500 DEG C, and outer wall of inner tube be wound around on heat-barrier material, wiper block is installed simultaneously, described interior pipe is set with within the outer tube after carrying out enlarging, tack process, inner and outer tubes are arranged with one heart, and interior pipe carries out adding thermal stretching process, and the two ends outer wall making interior pipe respectively with the two ends inwall welded seal of outer tube, form annular space, and be pumped into high vacuum.
The heat-barrier material that described outer wall of inner tube is wound around is the alternately winding of aluminium foil and glass grid cloth, and is equipped with efficient getter between the aluminium foil of interior pipe and innermost layer.
Described outer tube, interior pipe, heat-barrier material and wiper block will carry out heating and dehumidification process and cool with stove under vacuum before inner and outer tubes suit in vacuum furnace.
A kind of manufacture method of titanium alloy insulated tubing is as follows:
1) outer tube and the interior pipe titanium alloy oil pipe that all adopts heat resistance good.
2) get long process to outer tube and interior pipe, make inner tube length be less than outer tube, outer tube outer wall processes aspirating hole, aspirating hole is single wall through hole, and carries out blasting treatment to outer tube wall.
3) internally enlarging, tack process are carried out in pipe two ends, and carry out blasting treatment to outer wall of inner tube.
4) outer tube, interior pipe, heat-barrier material and wiper block carried out heating and dehumidification process in vacuum furnace and cool with stove under vacuum.
5) heat-barrier material is wrapped on outer wall of inner tube, and at outer wall of inner tube every 2 meters of installations wiper block.
6) outer tube of parcel heat-barrier material and interior pipe are set with, and welded seal is carried out at the inner and outer tubes two ends of suit, make to form annular space between outer tube and interior pipe.
7) by the aspirating hole on outer tube outer wall, process is vacuumized to annular space, after vacuum reaches requirement, under vacuum spot welding is carried out to aspirating hole, and by smooth for welding plug reconditioning.
Advantage of the present invention is: the invention provides a kind of lightweight, heat-resisting ability is strong, corrosion resistance is good titanium alloy insulated tubing and manufacture method thereof, and this insulated tubing is particularly suitable at deep & ultra-deep well and temperature is greater than 500 DEG C, pressure is greater than 20MPa and containing CO
2+ H
2s+C1
-corrosive environment under use.This insulated tubing solves the high temperature resistant and etching problem of insulated tubing in deep & ultra-deep well thickened oil recovery process, improves effect of heat insulation and oil recovery efficiency, extends the application life of insulated tubing.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Wherein: 1 is outer tube; 2 is interior pipe; 3 is heat-barrier material; 4 is wiper block.
Detailed description of the invention:
Below in conjunction with accompanying drawing, technical scheme of the present invention is further elaborated:
See Fig. 1, a kind of titanium alloy insulated tubing, comprises outer tube 1, interior pipe 2, heat-barrier material 3 and wiper block 4.Described outer tube 1 and interior pipe 2 are titanium alloy oil pipe, and carry out blasting treatment to outer tube 1 inwall and outer wall of inner tube 2.The outer wall of interior pipe 2 is wound with heat-barrier material 3.Described heat-barrier material is the alternately winding of aluminium foil and glass grid cloth, and is equipped with efficient getter between the aluminium foil of interior pipe and innermost layer.Described outer tube 1, interior pipe 2, heat-barrier material 3 and wiper block 4 should carry out heating and dehumidification process before outer tube 1 is set with interior pipe 2 in vacuum furnace.Fill a wiper block 4 every 2 meter amperes between described outer tube 1 and interior pipe 2, make to form annular space between outer tube 1 and interior pipe 2.Described annular space is high vacuum.
A kind of manufacture method of titanium alloy insulated tubing comprises the steps:
1) outer tube 1 and interior pipe 2 all adopt heat resisting temperature to be greater than the alpha titanium alloy oil pipe of 500 DEG C.
2) long process is got to outer tube 1 and interior pipe 2, make interior pipe 2 length be less than outer tube 1 length.
3) on port at least 400mm place tube wall, process aspirating hole at outer tube 1, aspirating hole is single wall through hole, and carries out blasting treatment to the performance of outer tube 1 inwall.
4) internally enlarging, tack process are carried out in pipe 2 two ends, make the port outside diameter after the enlarging of interior pipe 2 be slightly less than the internal diameter of outer tube 1, and internally pipe 2 outer wall surface carries out blasting treatment.
5) by through step 4) the interior pipe 2 that processes and through step 3) outer tube 1 that processes and heat-barrier material 3 and wiper block 4 carry out heating and dehumidification process, and cool with stove under vacuum in vacuum furnace.
6) by through step 5) heat-barrier material that processes is wrapped in through step 5) on interior pipe 2 outer wall that processes.Concrete grammar is: on interior pipe 2 outer wall, first wrap up one deck aluminium foil, efficient getter is placed between interior pipe 2 outer wall and aluminium foil, then one deck glass grid cloth is wrapped up in aluminum foil outer layer, totally three layers of aluminium foil triplex glass grid cloth, finally fill one through step 5 at interval of 2 meter amperes) wiper block that processes.
7) by through step 5) outer tube 1 that processes and through step 6) the interior pipe 2 that processes is set with, and reserves weld size on request.
8) by through step poly-7) inwall of outer tube 1 of the I end of cover assembling system that processes carries out welded seal with the outer wall of interior pipe 2, after the welding of I end, carries out adding thermal stretching process with the internal pipe 2 of heating rod, and interior pipe 2 heats and is stretched to
right after the welding requirements size of end
end adopts I to hold identical method to carry out welded seal, makes to form annular space between outer tube 1 and interior pipe 2.
9) by step 4) aspirating hole that processes vacuumizes process to annular space, and carries out spot welding to the aspirating hole on outer tube 1 outer wall under vacuum, carry out reinforcement repair welding, and welding plug is carried out reconditioning process after spot welding.
10) with the apparent heat conductivity of ECI-II apparent heat conductivity tester test insulated tubing.
11) as requested screw thread process and tack process are carried out to insulated tubing outer tube 1 and interior pipe 2, and first-class internal and external screw thread protector.
12) after testing, the insulated tubing performance manufactured according to the method described above meets SY/5324-1994 standard-required, apparent heat conductivity reach D level and more than.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention; can not assert that the specific embodiment of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the present invention by submitted to claims determination scope of patent protection.
Claims (6)
1. a titanium alloy insulated tubing, comprise interior pipe, outer tube, heat-barrier material and wiper block, it is characterized in that: described suit within the outer tube, inner and outer tubes are arranged with one heart, be wound with heat-barrier material at outer wall of inner tube, simultaneously outer wall of inner tube be provided with wiper block, the two ends outer wall of interior pipe respectively with the two ends inwall welded seal of outer tube, form annular space, annular space is high vacuum.
2. titanium alloy insulated tubing as claimed in claim 1, is characterized in that: described inner and outer tubes all adopt heat resisting temperature to be greater than the alpha titanium alloy oil pipe of 500 DEG C.
3. titanium alloy insulated tubing as claimed in claim 1, is characterized in that: described interior pipe is set with within the outer tube after carrying out enlarging, tack process; Described interior pipe carries out adding thermal stretching process.
4. titanium alloy insulated tubing as claimed in claim 1, is characterized in that: the heat-barrier material that described outer wall of inner tube is wound around is alternately being wound around of aluminium foil and glass grid cloth, and is equipped with efficient getter between the aluminium foil of interior pipe and innermost layer.
5. titanium alloy insulated tubing as claimed in claim 1, is characterized in that: described outer tube, interior pipe, heat-barrier material and wiper block will carry out heating and dehumidification process and cool with stove under vacuum before inner and outer tubes suit in vacuum furnace.
6. the manufacture method of titanium alloy insulated tubing as described in claim 1,2,3,4 or 5, is characterized in that, in accordance with the following steps:
1) outer tube and the interior pipe titanium alloy oil pipe that all adopts heat resistance good;
2) get long process to outer tube and interior pipe, make inner tube length be less than outer tube, outer tube outer wall processes aspirating hole, aspirating hole is single wall through hole, and carries out blasting treatment to outer tube wall;
3) internally enlarging, tack process are carried out in pipe two ends, and carry out blasting treatment to outer wall of inner tube;
4) outer tube, interior pipe, heat-barrier material and wiper block carried out heating and dehumidification process in vacuum furnace and cool with stove under vacuum;
5) heat-barrier material is wrapped on outer wall of inner tube, and at outer wall of inner tube every 2 meters of installations wiper block;
6) outer tube of parcel heat-barrier material and interior pipe are set with, and welded seal is carried out at the inner and outer tubes two ends of suit, make to form annular space between outer tube and interior pipe;
7) by the aspirating hole on outer tube outer wall, process is vacuumized to annular space, after vacuum reaches requirement, under vacuum spot welding is carried out to aspirating hole, and by smooth for welding plug reconditioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510563906.9A CN105201416A (en) | 2015-09-08 | 2015-09-08 | Titanium alloy heat-insulation oil pipe and producing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510563906.9A CN105201416A (en) | 2015-09-08 | 2015-09-08 | Titanium alloy heat-insulation oil pipe and producing method thereof |
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| CN105201416A true CN105201416A (en) | 2015-12-30 |
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| CN201510563906.9A Pending CN105201416A (en) | 2015-09-08 | 2015-09-08 | Titanium alloy heat-insulation oil pipe and producing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107902047A (en) * | 2017-10-19 | 2018-04-13 | 湖北海洋工程装备研究院有限公司 | A kind of liquid goods double-wall pipe and preparation method thereof |
| CN108851244A (en) * | 2018-07-24 | 2018-11-23 | 深圳麦克韦尔股份有限公司 | Toast the heating component of smoking set and vacuum heat-insulation |
| CN109986303A (en) * | 2018-01-02 | 2019-07-09 | 中国石油化工股份有限公司 | The manufacturing method of aerogel heat-proof oil pipe |
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| CN1177699A (en) * | 1997-08-13 | 1998-04-01 | 辽河石油勘探局机械修造集团公司 | Vacuum heat-insulation oil pipe and manufacturing technology therefor |
| 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 |
| 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 |
| CN103498072A (en) * | 2013-09-03 | 2014-01-08 | 中国船舶重工集团公司第七二五研究所 | High-strength high-impact-toughness titanium alloy used for oil well and gas well, and preparation method thereof |
| CN104404299A (en) * | 2014-11-21 | 2015-03-11 | 宝鸡石油钢管有限责任公司 | Titanium alloy continuous oil pipe and manufacturing method thereof |
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2015
- 2015-09-08 CN CN201510563906.9A patent/CN105201416A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1177699A (en) * | 1997-08-13 | 1998-04-01 | 辽河石油勘探局机械修造集团公司 | Vacuum heat-insulation oil pipe and manufacturing technology therefor |
| 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 |
| 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 |
| CN103498072A (en) * | 2013-09-03 | 2014-01-08 | 中国船舶重工集团公司第七二五研究所 | High-strength high-impact-toughness titanium alloy used for oil well and gas well, and preparation method thereof |
| CN104404299A (en) * | 2014-11-21 | 2015-03-11 | 宝鸡石油钢管有限责任公司 | Titanium alloy continuous oil pipe and manufacturing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107902047A (en) * | 2017-10-19 | 2018-04-13 | 湖北海洋工程装备研究院有限公司 | A kind of liquid goods double-wall pipe and preparation method thereof |
| CN109986303A (en) * | 2018-01-02 | 2019-07-09 | 中国石油化工股份有限公司 | The manufacturing method of aerogel heat-proof oil pipe |
| CN108851244A (en) * | 2018-07-24 | 2018-11-23 | 深圳麦克韦尔股份有限公司 | Toast the heating component of smoking set and vacuum heat-insulation |
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Application publication date: 20151230 |
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