CN102392607A - Continuous heat insulating oil pipe and manufacturing method thereof - Google Patents
Continuous heat insulating oil pipe and manufacturing method thereof Download PDFInfo
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- CN102392607A CN102392607A CN2011102146521A CN201110214652A CN102392607A CN 102392607 A CN102392607 A CN 102392607A CN 2011102146521 A CN2011102146521 A CN 2011102146521A CN 201110214652 A CN201110214652 A CN 201110214652A CN 102392607 A CN102392607 A CN 102392607A
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Abstract
The invention discloses a continuous heat insulating oil pipe and a manufacturing method thereof. The continuous heat insulating oil pipe comprises an inner pipe (1), an outer pipe (2) and a heat insulating and heat preserving layer (3), wherein both the inner pipe (1) and the outer pipe (2) are entire continuous oil pipes; a heat reflecting and heat insulating coating (4) is sprayed on the outer wall of the inner pipe (1), and is coated with the heat insulating and heat preserving layer (3); the outer pipe (2) is sleeved on the inner pipe (1), and can be wound on a winding drum III (7); positioning rings (5) are uniformly distributed on the outer wall of the inner pipe (1); the two ports of the outer pipe (2) are welded and sealed with the outer walls of the two ports of the inner pipe (1) respectively; and an annular space (6) is formed between the inner pipe (1) and the outer pipe (2). During operation, threaded connection is not required, so that the service life of the heat insulating oil pipe is prolonged, the operating efficiency is increased, and higher economic benefit is created.
Description
Technical field
The invention belongs to oil recovery technique field, oil field, be specifically related to continuous insulated tubing and manufacturing approach thereof that a kind of joint length surpasses 61m.
Background technology
In oil exploitation, the viscous crude bigger for viscosity generally need inject the water vapour about 300 ℃ to the down-hole, through the stewing well of high temperature, recovers the oil after viscosity of thickened oil is reduced again.Insulated tubing is an important equipment in the heat extraction by steam injection process, and its structure is at the annular space filling heat insulator of double-deck concentric tube or the heat-proof string of inert gas.Conventional insulated tubing is made up of outer tube, interior pipe, heat-barrier material, box cupling, sealing ring etc., and joint length is 9m-10m, all adopts during operation to be threaded.Through the insulated tubing that is threaded rise, complex operation not only in the process down, and duty cycle is longer.The more important thing is by the influence of factors such as the insulated tubing that is threaded is corroded in operation easily, lost efficacy in the junction; And be threaded in the rear thread of going into the well for several times and can receive mechanical damage in various degree, the influence loading and unloading, thus have a strong impact on operating efficiency.
Summary of the invention
The objective of the invention is to overcome conventional insulated tubing and adopt the shortcoming that is threaded; Provide a kind of homogeneous tube yield strength greater than 552MPa; Tensile strength is greater than continuous insulated tubing of the overlength of 620MPa and manufacturing approach thereof; Need not during operation to be threaded, improved the application life and the operating efficiency of insulated tubing, thereby create higher economic benefit.
Technical solution of the present invention: a kind of continuous insulated tubing; Comprise interior pipe, outer tube and insulating; Pipe and outer tube are whole coiled tubing in said, and are coated with the heat-reflecting heat-insulating coating on the outer wall of interior pipe, are enclosed with insulating on the heat-reflecting heat-insulating coating; Said outer tube sleeve dress on inner pipe and can be wrapped on the reel III and is uniformly distributed with locating ring on the outer wall of inner tube, and the two-port that makes outer tube respectively with the two-port outer wall welded seal of interior pipe, form annular space between pipe and the outer tube in making.
Said annular space is a vacuum.
Length >=the 61m of pipe and outer tube in said, yield strength >=552MPa, tensile strength >=620MPa.
Said insulating is entwined by several layers of aluminium foil, and is filled with efficient getter between the aluminium foil layer.
Locating ring of every interval 500-600mm installation on the outer wall of pipe in said, and on the cylindrical of locating ring ball is installed.
A kind of manufacturing approach of continuous insulated tubing is characterized in that said method comprises the steps:
A, interior pipe and outer tube all adopt the coiled tubing with certain heat resistance;
B, the outer wall of the interior pipe that discharges from reel carried out shot peening after; On-line spray one deck heat-reflecting heat-insulating coating on the outer wall of interior pipe; And on the heat-reflecting heat-insulating coating online parcel insulating, then, every interval 500-600mm installing and locating ring;
The inwall of C, outer tube carries out shot peening, and adopts pneumatic process reeve in outer tube;
D, the interior pipe after will handling through step B penetrate outer tube under the traction of wire rope, realize the suit of inner and outer pipes;
One end enlarging of E, interior pipe that suit is accomplished is handled, and the port outer wall of pipe is close to the port inner wall of outer tube in making, again with the port outer wall of interior pipe and the port inner wall welded seal of outer tube; Apply pulling force at the internal pipe of the other end of interior pipe then, and under the prestressing force condition, adopt the other end of internally managing to carry out welded seal, make between interior pipe and the outer tube and form annular space with quadrat method.
The surface of F, outer tube carries out being wound on the reel III after the preservative treatment.
At first outer tube is wrapped on two reel I and reel II side by side successively among the said step C, and the inwall of outer tube carries out shot peening, adopt pneumatic process reeve in outer tube again; Bore aspirating hole at two free ends and the linkage section place between the two winding drum of outer tube then.
On the cylindrical of said locating ring ball is installed.
Further, all be drilled with 3-5 Φ 8mm, the aspirating hole of 1000mm, and the aspirating hole of outermost end at interval at two free ends of outer tube and the linkage section place between the two winding drum at least apart from the port 50mm of outer tube.
Further, annular space is vacuumized processing, after vacuum reaches requirement, aspirating hole is carried out the stifled weldering of vacuum, and it is smooth to block up the plumb joint reconditioning through aspirating hole.
Advantage that the present invention has and effect:
1, continuous insulated tubing of the present invention adopts coiled tubing to process, and need not during operation to be threaded, and has increased substantially the application life and the operating efficiency of insulated tubing, thereby can create higher economic benefit.
2, need not to be threaded loss of strength of thoroughly having avoided causing and the loss of connectivity issue that causes because of corrosion during continuous insulated tubing operation of the present invention by nipple.
3, continuous insulated tubing of the present invention is wrapped on the reel, is convenient to transportation more.
4, the manufacturing approach of continuous insulated tubing of the present invention is simple, and production efficiency is high, and the product of producing can reach prestressing force insulated tubing standard-required fully.
Description of drawings
Fig. 1 is the structural representation of the continuous insulated tubing of the present invention,
Fig. 2 is the cross section structure sectional view of the continuous insulated tubing of the present invention,
Fig. 3 is the end structure sectional view of the continuous insulated tubing of the present invention,
Fig. 4 is the manufacturing approach sketch map of the continuous insulated tubing of the present invention.
The specific embodiment
In conjunction with accompanying drawing 1,2,3,4 a kind of embodiment of the present invention is described.
A kind of continuous insulated tubing, pipe 1, outer tube 2 and insulating 3 in comprising.Pipe 1 is whole coiled tubing with outer tube 2 in said, and is coated with heat-reflecting heat-insulating coating 4 on the outer wall of interior pipe 1, is enclosed with insulating 3 on the heat-reflecting heat-insulating coating 4; In being sleeved on, said outer tube 2 also can be wrapped on the reel III 7 on the pipe 1; And every interval 500-600mm installs a locating ring 5 on interior pipe 1 outer wall; And ball 11 is installed on the cylindrical of locating ring 5; And the two-port inwall that makes outer tube 2 respectively with the two-port outer wall welded seal of interior pipe 1, formation annular space 6 between pipe 1 and the outer tube 2 in making.
Said annular space 6 is a vacuum.The length of pipe 1 and outer tube 2 is 61-3000m in said, yield strength >=552MPa, tensile strength >=620MPa.Said insulating 3 is entwined by six layers of aluminium foil, and is filled with efficient getter between the aluminium foil layer.
A kind of manufacturing approach of continuous insulated tubing comprises the steps:
A, interior pipe 1 and outer tube 2 all adopt the continuous oil pipe of CT80 level with certain heat resistance; Length is 400m;
B, the outer wall of the interior pipe 1 that discharges from reel carried out shot peening after; On-line spray one deck heat-reflecting heat-insulating coating 4 on the outer wall of interior pipe 1, treat that coating is stable after, online parcel insulating 3 on heat-reflecting heat-insulating coating 4; Then; Every interval 500-600mm installing and locating ring 5, and ball 11 is installed on the cylindrical of locating ring 5, help the suit of inner and outer pipes;
C, outer tube 2 is wrapped on two reel I 8 and reel II 9 side by side successively, and the inwall of outer tube 2 carries out shot peening, adopt pneumatic process reeve in outer tube 2 through the compressed air traction; All be drilled with 3-5 Φ 8mm, the aspirating hole 10 of 1000mm at interval then at two free ends of outer tube 2 and the linkage section place between the two winding drum; And the aspirating hole 10 of outermost end apart from the port 50mm of outer tube 2, guarantees not influence the welded seal between the inner and outer pipes port at least;
D, the interior pipe 1 after will handling through step B penetrate under the traction of wire rope in the above-mentioned outer tube 2, realize the suit of inner and outer pipes;
One end enlarging of E, interior pipe 1 that suit is accomplished is handled, and the port outer wall of pipe 1 is close to the port inner wall of outer tube 2 in making, again with the port outer wall of interior pipe 1 and the port inner wall welded seal of outer tube 2; Apply pulling force at the internal pipe 1 of the other end of interior pipe 1 then, and under the prestressing force condition, adopt the other end to carry out welded seal, make between interior pipe 1 and the outer tube 2 and form annular space 6 with the internal pipe 1 of quadrat method;
F, vacuumize processing, reach in vacuum and require the back that aspirating hole 10 is carried out the stifled weldering of vacuum below the 10Pa, and it is smooth to block up the plumb joint reconditioning through 10 pairs of annular spaces 6 of aspirating hole;
G, the pipe that will pass through after the above-mentioned processing all are wrapped on the reel I 8, and carry out apparent heat conductivity and detect, and require apparent heat conductivity to reach more than the C level;
H, the pipe that will pass through after the above-mentioned processing progressively discharge from reel I 8, and the surface of outer tube 2 is carried out all rewinding on the reel II 9 after the preservative treatment and got final product.
Adopt the continuous insulated tubing length of said method manufacturing to reach 400m, apparent heat conductivity reaches more than the C level, through its mechanical property of test satisfy fully the requirement of prestressing force insulated tubing (standard No.: SY/T5324-1994), its specification and mechanical property such as following table:
Claims (10)
1. continuous insulated tubing; Comprise interior pipe (1), outer tube (2) and insulating (3); It is characterized in that: pipe (1) and outer tube (2) are whole coiled tubing in said; And be coated with heat-reflecting heat-insulating coating (4) on the outer wall of interior pipe (1), be enclosed with insulating (3) on the heat-reflecting heat-insulating coating (4); Said outer tube (2) is sleeved on interior pipe (1) and goes up and can be wrapped on the reel III (7); And be uniformly distributed with locating ring (5) on interior pipe (1) outer wall; And the two-port that makes outer tube (2) respectively with the two-port outer wall welded seal of interior pipe (1), make between interior pipe (1) and the outer tube (2) and form annular space (6).
2. continuous insulated tubing according to claim 1 is characterized in that: said annular space (6) is a vacuum.
3. according to claims 1 described a kind of continuous insulated tubing, it is characterized in that: the length >=61m of pipe (1) and outer tube (2) in said, yield strength >=552MPa, tensile strength >=620MPa.
4. continuous insulated tubing according to claim 2 is characterized in that: said insulating (3) is entwined by several layers of aluminium foil, and is filled with efficient getter between the aluminium foil layer.
5. according to claim 1 or 2 or 3 or 4 described continuous insulated tubings, it is characterized in that: every interval 500-600mm installation locating ring (5) on the outer wall of pipe (1) in said, and ball (11) is installed on the cylindrical of locating ring (5).
6. the manufacturing approach of a continuous insulated tubing is characterized in that said method comprises the steps:
A, interior pipe (1) and outer tube (2) all adopt the coiled tubing with certain heat resistance;
B, the outer wall of the interior pipe (1) that discharges from reel carried out shot peening after; On-line spray one deck heat-reflecting heat-insulating coating (4) on the outer wall of interior pipe (1); And at the last online parcel insulating (3) of heat-reflecting heat-insulating coating (4), then, every interval 500-600mm installing and locating ring (5);
The inwall of C, outer tube (2) carries out shot peening, and adopts pneumatic process reeve in outer tube (2);
D, the interior pipe (1) after will handling through step B penetrate outer tube (2) under the traction of wire rope, realize the suit of inner and outer pipes;
One end enlarging of E, interior pipe (1) that suit is accomplished is handled, and makes the port outer wall of interior pipe (1) be close to the port inner wall of outer tube (2), again with the port outer wall of interior pipe (1) and the port inner wall welded seal of outer tube (2); Internally manage (1) at the other end of interior pipe (1) then and apply pulling force, and under the prestressing force condition, adopt the other end of internally managing (1) to carry out welded seal, make between interior pipe (1) and the outer tube (2) and form annular space (6) with quadrat method.
The surface of F, outer tube (2) carries out being wound on the reel III (7) after the preservative treatment.
7. the manufacturing approach of continuous insulated tubing according to claim 6 is characterized in that: ball (11) is installed on the cylindrical of said locating ring (5).
8. the manufacturing approach of continuous insulated tubing according to claim 6; It is characterized in that: at first outer tube (2) is wrapped on two reel I (8) and reel II (9) side by side successively among the said step C; And the inwall of outer tube (2) carries out shot peening, adopts pneumatic process reeve in outer tube (2) again; Bore aspirating hole (10) at two free ends and the linkage section place between the two winding drum of outer tube (2) then.
9. the manufacturing approach of continuous insulated tubing according to claim 8; It is characterized in that: all be drilled with 3-5 Φ 8mm, the aspirating hole (10) of 1000mm, and the aspirating hole of outermost end (10) at interval at two free ends of outer tube (2) and the linkage section place between the two winding drum at least apart from the port 50mm of outer tube (2).
10. according to Claim 8 or the manufacturing approach of 9 described continuous insulated tubings; It is characterized in that: annular space (6) is vacuumized processing through aspirating hole (10); After vacuum reaches requirement, aspirating hole (10) is carried out the stifled weldering of vacuum, and it is smooth to block up the plumb joint reconditioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110214652.1A CN102392607B (en) | 2011-07-22 | 2011-07-22 | Continuous heat insulating oil pipe and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110214652.1A CN102392607B (en) | 2011-07-22 | 2011-07-22 | Continuous heat insulating oil pipe and manufacturing method thereof |
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| CN102392607A true CN102392607A (en) | 2012-03-28 |
| CN102392607B CN102392607B (en) | 2014-12-03 |
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Cited By (9)
| 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 |
| CN104120982A (en) * | 2014-07-25 | 2014-10-29 | 潘立平 | Seal thermal-insulation expansion nipple |
| 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 |
| CN108515313A (en) * | 2018-03-13 | 2018-09-11 | 杰森能源技术有限公司 | A kind of Concentric Coiled Tubing on-line continuous preparation method |
| CN109630034A (en) * | 2018-11-20 | 2019-04-16 | 山东美生热能科技有限公司 | Insulated tubing and its manufacturing method with resistance hydrogen impregnation coating |
| CN109630033A (en) * | 2018-11-20 | 2019-04-16 | 山东美生热能科技有限公司 | Long-life insulated tubing and its manufacturing method |
| CN109653686A (en) * | 2018-11-20 | 2019-04-19 | 山东美生热能科技有限公司 | Long-life insulated tubing and its manufacturing method with resistance hydrogen impregnation coating |
| CN111287672A (en) * | 2020-04-16 | 2020-06-16 | 东北石油大学 | Heat exchange and heat insulation sleeve for exploiting terrestrial heat by utilizing waste oil well |
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| CN202187725U (en) * | 2011-07-22 | 2012-04-11 | 宝鸡石油钢管有限责任公司 | Continuous thermal insulation oil tube |
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| US4512721A (en) * | 1982-08-31 | 1985-04-23 | The Babcock & Wilcox Company | Vacuum insulated stem injection tubing |
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Cited By (11)
| 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 |
| CN104120982A (en) * | 2014-07-25 | 2014-10-29 | 潘立平 | Seal thermal-insulation expansion nipple |
| 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 |
| CN108515313A (en) * | 2018-03-13 | 2018-09-11 | 杰森能源技术有限公司 | A kind of Concentric Coiled Tubing on-line continuous preparation method |
| WO2019174093A1 (en) * | 2018-03-13 | 2019-09-19 | 杰森能源技术有限公司 | Online continuous production preparation method for concentric continuous oil pipe |
| CN109630034A (en) * | 2018-11-20 | 2019-04-16 | 山东美生热能科技有限公司 | Insulated tubing and its manufacturing method with resistance hydrogen impregnation coating |
| CN109630033A (en) * | 2018-11-20 | 2019-04-16 | 山东美生热能科技有限公司 | Long-life insulated tubing and its manufacturing method |
| CN109653686A (en) * | 2018-11-20 | 2019-04-19 | 山东美生热能科技有限公司 | Long-life insulated tubing and its manufacturing method with resistance hydrogen impregnation coating |
| CN111287672A (en) * | 2020-04-16 | 2020-06-16 | 东北石油大学 | Heat exchange and heat insulation sleeve for exploiting terrestrial heat by utilizing waste oil well |
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| CN102392607B (en) | 2014-12-03 |
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