CN102865052A - Heat preservation method for coupling part of insulated tubing pipe column - Google Patents
Heat preservation method for coupling part of insulated tubing pipe column Download PDFInfo
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- CN102865052A CN102865052A CN2012104047826A CN201210404782A CN102865052A CN 102865052 A CN102865052 A CN 102865052A CN 2012104047826 A CN2012104047826 A CN 2012104047826A CN 201210404782 A CN201210404782 A CN 201210404782A CN 102865052 A CN102865052 A CN 102865052A
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- metal sleeve
- insulated tubing
- pipe column
- hole
- layer
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Abstract
The invention relates to the technical field of thermal recovery of heavy oil and particularly relates to a heat preservation method for a coupling part of an insulated tubing pipe column. The method comprises the following steps of: 1, preparing a vacuum metal sleeve, firstly, selecting a double-layer or multi-layer metal sleeve, drilling a hole for vacuumizing on each of other metal sleeves except for the metal sleeve in the innermost layer, welding two ends of the double-layer or multi-layer metal sleeve, vacuumizing inner and outer metal sleeve rings in a drilling hole part, and then sealing the hole and welding the hole, and finishing preparing of the vacuum metal sleeve at this moment; 2, putting the vacuum metal sleeve into a coupling of a pipe column of an insulated tubing I and centering; 3, connecting an insulated tubing II and the coupling; and 4, repeating the steps until the entire pipe column sinks into an oil well. According to the heat preservation method, heat radiation of the coupling part is reduced under the situation that strength of a coupling screw thread is not affected, and a steam injection effect is improved. Defects that no thermal insulation measures are taken at the coupling part of the conventional insulated tubing pipe column and the heat radiation is larger are overcome.
Description
Technical field:
The present invention relates to a kind of heavy crude heat extraction technical field, particularly a kind of insulated tubing string collar position heat preserving method.
Background technology:
The insulated tubing tubing string is steam injection tubing string the most frequently used in the heavy crude heat extraction technique, the insulated tubing tubing string comprises insulated tubing and box cupling two parts, insulated tubing is bimetallic tube, reaches function of heat insulation by inner and outer pipes annular space space is vacuumized and adds isolation layer.Mainly being abutted against hoop between the insulated tubing connects.Box cupling is exactly direct machining screw on steel pipe, and is connected with insulated tubing, and Insulation is not taked at the box cupling position at present, under insulated tubing tubing string duty heat radiation larger, it is larger that the heat radiation of box cupling position accounts for whole insulated tubing tubing string dissipation heat ratio.
Summary of the invention:
The technical problem to be solved in the present invention provides a kind of insulated tubing string collar position heat preserving method, and the method has realized not affecting in the box cupling screw strength situation, reduces the heat radiation at box cupling position, improves the steam injection effect.Overcome existing insulated tubing string collar position and do not taked Insulation, the larger deficiency of dispelling the heat.
The technical solution used in the present invention is: a kind of insulated tubing string collar position heat preserving method, and the method step is as follows:
One, makes the vacuum metal sleeve; At first choose bilayer or multiple layer metal sleeve, except the metal sleeve of innermost layer, all the other metal sleeves need bore a hole that is used for vacuumizing usefulness, bilayer or multiple layer metal sleeve two ends are welded, in drill hole inside and outside metal sleeve annular space is vacuumized, then this hole is blocked and welded, at this moment, the vacuum metal sleeve completes;
Two, the vacuum metal sleeve is positioned in the box cupling of insulated tubing I tubing string and centering;
Three, the insulated tubing II is connected with box cupling;
Four, repeat above step, until whole tubing string all is lowered in the oil well.
When being welded, bilayer or multiple layer metal sleeve two ends can in inside and outside metal sleeve annular space, place getter.
The invention has the beneficial effects as follows: the present invention is owing to adopted the mode that the vacuum metal sleeve is installed in box cupling, thereby have in the function that does not affect the heat radiation at minimizing box cupling position in the box cupling screw strength situation, easy to operate, improve the steam injection effect, save the thickened oil recovery cost, enhance productivity.
Description of drawings:
The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation at insulated tubing string collar position.
Fig. 2 is the structural representation of vacuum metal sleeve.
The specific embodiment:
As shown in Figure 1 and Figure 2, a kind of insulated tubing string collar position heat preserving method, the method step is as follows:
One, makes vacuum metal sleeve 3; At first choose bilayer or multiple layer metal sleeve, except the metal sleeve of innermost layer, all the other metal sleeves need bore a hole that is used for vacuumizing usefulness, bilayer or multiple layer metal sleeve two ends are welded, can in inside and outside metal sleeve annular space, place getter during welding, be used for residual pernicious gas under the absorbing high temp duty, in drill hole inside and outside metal sleeve annular space is vacuumized, then this hole is blocked and welded, at this moment, vacuum metal sleeve 3 completes;
Two, vacuum metal sleeve 3 is positioned over the box cupling 2 interior and centerings of insulated tubing I 1 tubing string;
Three, insulated tubing II 5 is connected with box cupling 2, between insulated tubing I 1 and insulated tubing II 5 and the box cupling 2 sealing ring 4 is installed all;
Four, repeat above step, until whole tubing string all is lowered in the oil well, can realize the insulation at whole insulated tubing string collar position.
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 (2)
1. insulated tubing string collar position heat preserving method, it is characterized in that: the method step is as follows:
One, makes vacuum metal sleeve (3); At first choose bilayer or multiple layer metal sleeve, except the metal sleeve of innermost layer, all the other metal sleeves need bore a hole that is used for vacuumizing usefulness, bilayer or multiple layer metal sleeve two ends are welded, in drill hole inside and outside metal sleeve annular space is vacuumized, then this hole is blocked and welded, at this moment, vacuum metal sleeve (3) completes;
Two, vacuum metal sleeve (3) is positioned over the interior and centering of box cupling (2) of insulated tubing I (1) tubing string;
Three, insulated tubing II (5) is connected with box cupling (2);
Four, repeat above step, until whole tubing string all is lowered in the oil well.
2. according to insulated tubing string collar claimed in claim 1 position heat preserving method, it is characterized in that: describedly can in inside and outside metal sleeve annular space, place getter when bilayer or multiple layer metal sleeve two ends are welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104047826A CN102865052A (en) | 2012-10-22 | 2012-10-22 | Heat preservation method for coupling part of insulated tubing pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104047826A CN102865052A (en) | 2012-10-22 | 2012-10-22 | Heat preservation method for coupling part of insulated tubing pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102865052A true CN102865052A (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104047826A Pending CN102865052A (en) | 2012-10-22 | 2012-10-22 | Heat preservation method for coupling part of insulated tubing pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102865052A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464643A (en) * | 2014-09-12 | 2016-04-06 | 中国石油天然气股份有限公司 | Ultralow-temperature-resistant circuit protecting structure of downhole tester |
| CN108989928A (en) * | 2017-05-31 | 2018-12-11 | 膳魔师（中国）家庭制品有限公司 | Vacuum double tectosome and its manufacturing method and headphone |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832108A (en) * | 2010-05-07 | 2010-09-15 | 湖北贵族真空科技股份有限公司 | Vacuum oil tubing coupling |
| CN102071879A (en) * | 2011-01-07 | 2011-05-25 | 辽河石油勘探局总机械厂 | Novel prestressed heat-insulation oil pipe |
| CN202273601U (en) * | 2011-09-12 | 2012-06-13 | 中国石油天然气集团公司 | Heat insulation collar |
-
2012
- 2012-10-22 CN CN2012104047826A patent/CN102865052A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832108A (en) * | 2010-05-07 | 2010-09-15 | 湖北贵族真空科技股份有限公司 | Vacuum oil tubing coupling |
| CN102071879A (en) * | 2011-01-07 | 2011-05-25 | 辽河石油勘探局总机械厂 | Novel prestressed heat-insulation oil pipe |
| CN202273601U (en) * | 2011-09-12 | 2012-06-13 | 中国石油天然气集团公司 | Heat insulation collar |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464643A (en) * | 2014-09-12 | 2016-04-06 | 中国石油天然气股份有限公司 | Ultralow-temperature-resistant circuit protecting structure of downhole tester |
| CN108989928A (en) * | 2017-05-31 | 2018-12-11 | 膳魔师（中国）家庭制品有限公司 | Vacuum double tectosome and its manufacturing method and headphone |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130109 |