CN101587760B - Cable of downhole monitoring system of horizontal steam injection well and preparing method thereof - Google Patents
Cable of downhole monitoring system of horizontal steam injection well and preparing method thereof Download PDFInfo
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- CN101587760B CN101587760B CN2009100838662A CN200910083866A CN101587760B CN 101587760 B CN101587760 B CN 101587760B CN 2009100838662 A CN2009100838662 A CN 2009100838662A CN 200910083866 A CN200910083866 A CN 200910083866A CN 101587760 B CN101587760 B CN 101587760B
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Abstract
The present invention relates to a cable of a downhole monitoring system of a horizontal steam injection wall and a preparing method thereof, wherein the cable comprises a temperature measuring cable and a pressure measuring cable which are equipped in parallel and bundled by a binding steel belt. The binding steel belt are sequentially coated with a high-temperature insulating belt, a temperature-reducing fluoro-silicon adhesive layer and a semiconductor electrical belt outside. The preparing method of the cable comprises the following steps: prefabricating the thermoelectric couple bundle into a large-diameter capillary pipe thorough a traction mode for preparing the temperature measuring cable; preparing the pressure measuring cable; binding the temperature measuring cable and the pressure measuring cable which are parallel with the binding steel belt; and sequentially coating the high-temperature insulating belt, the temperature-reducing fluoro-silicon adhesive layer and the semiconductor electrical belt outside the binding steel belt. According to the invention, the temperature measuring cable and the pressure measuring cable are bound to the cable bundle through the binding steel belt so that the cable bundle has the following advantages: capacity for measuring temperature and pressure, high strength, high temperature insulation and electrical insulation through the binding of the insulating high-temperature-resistant belt and the fluorine-silicon adhesive. The cable of the invention can be mainly used for monitoring the temperature and the pressure of a plurality of points in the horizontal segment of the SAGD steam injection well.
Description
Technical field
The present invention relates to a kind of downhole testing cable that in Petroleum Production, uses, relate in particular to a kind of cable that is used for downhole monitoring system of horizontal steam injection well and preparation method thereof.
Background technology
Thickened oil recovery now technology preferably is that SAGD horizontal well gravity drives oil recovery, and it is the production practice of high investment, for higher output is arranged, need carry out the long term monitoring of effective omnidistance multi-point temp pressure to it.
And the monitoring cable that uses in the monitoring system has been brought into play important effect in monitoring at the scene; But its precasting process complexity has the phenomenon of fracture to take place in the process that removes repeatedly, causes the success rate of monitoring low.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, a kind of cable that is used for horizontal well multi-point temp pressure dynamic monitoring system is provided, simple to reach precasting process, monitoring success rate height realizes that SAGD horizontal well gravity drives the purpose of oil recovery high production.
The present invention is achieved by the following technical solutions:
A kind of cable that is used for downhole monitoring system of horizontal steam injection well comprises cable for measuring temperature and pressure measurement cable, and described cable for measuring temperature and pressure measurement cable lash bunchy by binding steel side by side.
Described cable for measuring temperature can be made of thermocouple bundle and major diameter capillary usually, and described thermocouple bundle can be made up of some thermocouples, and described major diameter capillary is wrapped in the outside of described thermocouple bundle.
Described pressure measurement cable can comprise pressure tap, high temperature pressure-transmission tube and pressure measurement capillary, and described high temperature pressure-transmission tube is on described pressure measurement capillary top, and described pressure tap is connected the top of described pressure-transmission tube, and described pressure tap top is provided with the pressure tap over cap.
Described binding steel belt can be wound with the high-temperature insulation band.
Described high-temperature insulation band outside can be provided with cooling fluorine silica gel extrusion molding layer.
Described cooling fluorine layer of silica gel outside can be wound with the semi-conductor electricity band.
A kind of preparation method who is used for the cable of downhole monitoring system of horizontal steam injection well may further comprise the steps:
1) preparation cable for measuring temperature;
2) preparation pressure measurement cable;
3) the pressure measurement cable is come with cable for measuring temperature, twine with binding steel and tie into bunch of cables;
4) again with the above bunch of cables of having made of the high temperature resistant band looping of insulation.
Can also may further comprise the steps:
5) extrusion molding one deck fluorine silica gel outside the bunch of cables that described step (4) is prepared;
6) on the bunch of cables that step (5) is prepared, twine two semiconductors electricity band.
The described method for preparing cable for measuring temperature can be that the thermocouple traction steel wire is spiral pre-buried in the major diameter capillary that does not stretch, with the described vertical drawing of major diameter capillary that does not stretch, traction steel wire is along with vertical drawing is freely stretched, after the designing requirement of capillary external diameter size conforms, will be drawn to by the thermocouple bundle that some thermocouples are formed in the described major diameter capillary by the thermocouple traction steel wire.
The described method for preparing the pressure measurement cable can be that pressure tap, high temperature pressure-transmission tube and pressure measurement capillary are connected successively, again the pressure tap over cap is installed in the pressure tap top.
The present invention is according to geology design temperature pressure point of observation scheme, some thermocouples are made cable for measuring temperature by prefabricated in capillary, again cable for measuring temperature and pressure measurement capillary are together made the monitoring cable, can be used to monitor SAGD producing well horizontal segment multi-point temp and pressure, vapour drives the well down-hole steam direction of motion and fltting speed, steam are broken through the position around accurately understanding; The outside binding steel that adopts is with cable for measuring temperature colligation bunchy, increase the intensity of bunch of cables, guarantee that bunch of cables each pipeline in the follow-up course of processing does not twist, outside in high temperature resistant band of insulation and fluorine silica gel looping, play the effect of isolating high temperature and insulation, preparation technology is simple, has simplified the precasting process of monitoring cable, guarantees the success rate of monitoring.
Description of drawings
Fig. 1 is the perspective view that is used for the cable of horizontal steam injection well multi-point temp pressure dynamic monitoring system of the present invention;
Fig. 2 is the section structure schematic diagram that is used for the cable of horizontal steam injection well multi-point temp pressure dynamic monitoring system of the present invention.
Embodiment
Referring to Fig. 1-2, the cable that is used for downhole monitoring system of horizontal steam injection well of the present invention comprises cable for measuring temperature 1 and pressure measurement cable 2, and described cable for measuring temperature 1 and pressure measurement cable 2 lash bunchy by binding steel 3 side by side.
Described cable for measuring temperature 1 can be made of some thermocouples 4 and major diameter capillary 5, and described each thermocouple is at regular intervals in advance in capillary 5.
Described pressure measurement cable 2 can comprise pressure tap 6, high temperature pressure-transmission tube 7 and pressure measurement capillary 8, and described pressure tap 6, high temperature pressure-transmission tube 7 and pressure measurement capillary 8 are connected successively, and described pressure tap 6 top buckle closures have pressure tap over cap 9.
Can looping there be high-temperature insulation band 10 described binding steel 3 outsides.
Described high-temperature insulation 10 band outsides can form one deck cooling fluorine silica gel extrusion molding layer 11 by the extrusion molding mode.
Two semi-conductor electricity bands 12 can be twined in described cooling fluorine layer of silica gel 11 outsides.
The preparation method who is used for the cable of downhole monitoring system of horizontal steam injection well of the present invention may further comprise the steps:
1) thermocouple 4 traction steel wires are spiral pre-buried in major diameter capillary 5, in the vertical drawing process of capillary, traction steel wire is along with vertical drawing is freely stretched, after capillary 5 outside dimension composite design require, by prefabricated the arriving in the capillary 5 of thermocouple bundle traction that traction steel wire is formed some thermocouples 4, make the thermocouple cable 1 that can carry out one or more thermometrics;
2) high temperature pressure-transmission tube 7 is coated on pressure tap 6 and pressure measurement capillary 8 outsides, and pressure tap 6 is connected with pressure measurement capillary 8 upper-lower seal, again with pressure tap over cap 9 buckle closures on pressure tap 6 tops, make pressure measurement cable 2;
3) will make pressure measurement cable 2 comes with thermocouple cable 2, the binding steel 3 thick with 0.6mm twines sheave, fixes the position between each pipeline, increases the intensity of bunch of cables, guarantee that bunch of cables does not take place by reversing of each pipeline in the follow-up course of processing, reduce the possibility of damaging pipeline;
4) high temperature resistant with the thick insulation of 0.3mm again with the above bunch of cables of having made of 10 loopings, can reduce inside cable bundle impaired possibility in follow-up high temperature manufacturing process;
5) the thick fluorine silica gel 11 of extrusion molding one deck 1.6mm on above bunch of cables again plays the effect of isolating high temperature and insulation better, guarantees that the inside cable bundle is not damaged in manufacturing process;
6) on bunch of cables, twine two semi-conductor electricity bands 12 that 0.5mm is thick at last, play conduction, for follow-up weld seam work is prepared.
Claims (7)
1. cable that is used for downhole monitoring system of horizontal steam injection well, it is characterized in that: comprise cable for measuring temperature and pressure measurement cable, described cable for measuring temperature and pressure measurement cable are side by side, lash bunchy by binding steel, described binding steel belt is wound with the high-temperature insulation band, and described high-temperature insulation band outside is provided with cooling fluorine silica gel extrusion molding layer.
2. the cable that is used for downhole monitoring system of horizontal steam injection well as claimed in claim 1, it is characterized in that: described cable for measuring temperature is made of thermocouple bundle and major diameter capillary, described thermocouple bundle is made up of some thermocouples, and described major diameter capillary is wrapped in the outside of described thermocouple bundle.
3. the cable that is used for downhole monitoring system of horizontal steam injection well as claimed in claim 1; it is characterized in that: described pressure measurement cable comprises pressure tap, high temperature pressure-transmission tube and pressure measurement capillary; described high temperature pressure-transmission tube is on described pressure measurement capillary top; described pressure tap is connected the top of described pressure-transmission tube, and described pressure tap top is provided with the pressure tap over cap.
4. as claim 1, the 2 or 3 described cables that are used for downhole monitoring system of horizontal steam injection well, it is characterized in that: described cooling fluorine layer of silica gel outside is wound with the semi-conductor electricity band.
5. preparation method who is used for the cable of downhole monitoring system of horizontal steam injection well is characterized in that may further comprise the steps:
1) preparation cable for measuring temperature;
2) preparation pressure measurement cable;
3) the pressure measurement cable is come with cable for measuring temperature, twine with binding steel and tie into bunch of cables;
4) again with the above bunch of cables of having made of the high temperature resistant band looping of insulation;
5) extrusion molding one deck fluorine silica gel outside the bunch of cables that described step (4) is prepared;
6) on the bunch of cables that step (5) is prepared, twine two semiconductors electricity band.
6. the preparation method who is used for the cable of downhole monitoring system of horizontal steam injection well as claimed in claim 5, it is characterized in that the described method for preparing cable for measuring temperature is that the thermocouple traction steel wire is spiral pre-buried in the major diameter capillary that does not stretch, with the described vertical drawing of major diameter capillary that does not stretch, traction steel wire is along with vertical drawing is freely stretched, after the designing requirement of capillary external diameter size conforms, to be drawn to by the thermocouple bundle that some thermocouples are formed in the described major diameter capillary by the thermocouple traction steel wire, the thermometric end of each thermocouple is exposed at described major diameter extracapillary.
7. the preparation method who is used for the cable of downhole monitoring system of horizontal steam injection well as claimed in claim 6; it is characterized in that the method that described preparation has a pressure measurement cable of pressure tap is that pressure tap, high temperature pressure-transmission tube and pressure measurement capillary are connected successively, again the pressure tap over cap is installed in the pressure tap top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100838662A CN101587760B (en) | 2009-05-07 | 2009-05-07 | Cable of downhole monitoring system of horizontal steam injection well and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009100838662A CN101587760B (en) | 2009-05-07 | 2009-05-07 | Cable of downhole monitoring system of horizontal steam injection well and preparing method thereof |
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| Publication Number | Publication Date |
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| CN101587760A CN101587760A (en) | 2009-11-25 |
| CN101587760B true CN101587760B (en) | 2011-01-19 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146792B (en) * | 2010-12-03 | 2013-11-06 | 中国石油天然气股份有限公司 | Temperature and pressure monitoring cable with protection tube and manufacturing method thereof |
| CN102163476A (en) * | 2011-03-24 | 2011-08-24 | 深圳市瑞雷特电子技术有限公司 | Cable for testing properties of battery pack |
| CN102383782B (en) * | 2011-11-15 | 2014-11-26 | 中国石油天然气股份有限公司 | Small-diameter high temperature heat-insulating pressure measuring unit |
| CN102536210B (en) * | 2012-01-16 | 2015-11-18 | 克拉玛依新宇宙油气技术开发有限公司 | For the downhole parameters direct reading test all-in-one of oil field vertical shaft and horizontal well |
| CN106499348B (en) * | 2016-11-04 | 2019-02-26 | 吉林省三和电气***工程有限公司 | A kind of testing pressure down hole measuring temperature wire cable |
| CN112570478B (en) * | 2020-12-04 | 2021-06-25 | 中国科学院力学研究所 | Internal pulling type manufacturing method of coaxial thermocouple transient heat flow sensor |
| CN116072338B (en) * | 2023-04-06 | 2023-06-13 | 亚星线缆集团有限公司 | Submarine ultrahigh-voltage cable with temperature measuring unit |
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| CN2888070Y (en) * | 2006-03-31 | 2007-04-11 | 张建华 | Optical fiber type multi-point temperature and pressure measuring device for thick oil horizontal well |
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| CN201083125Y (en) * | 2007-07-27 | 2008-07-09 | 辽宁华孚石油高科技股份有限公司 | High-temperature high-pressure testing cable for oil field horizontal well heating power exploitation |
| CN101251008A (en) * | 2008-03-31 | 2008-08-27 | 辽河石油勘探局 | Optical fiber sensing method for synchronously testing temperature and pressure below horizontal well |
| CN201170093Y (en) * | 2007-09-18 | 2008-12-24 | 中国石油天然气股份有限公司 | Multi-point temperature pressure dynamic monitoring instrument of horizontal well |
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- 2009-05-07 CN CN2009100838662A patent/CN101587760B/en active Active
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|---|---|---|---|---|
| CN2934569Y (en) * | 2006-02-24 | 2007-08-15 | 中国石油天然气集团公司 | Optical fiber test device suitable for permanent oil gas production well |
| CN2888070Y (en) * | 2006-03-31 | 2007-04-11 | 张建华 | Optical fiber type multi-point temperature and pressure measuring device for thick oil horizontal well |
| CN200983027Y (en) * | 2006-12-13 | 2007-11-28 | 张建华 | A high-temperature oil well testing optical cable |
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| CN101251008A (en) * | 2008-03-31 | 2008-08-27 | 辽河石油勘探局 | Optical fiber sensing method for synchronously testing temperature and pressure below horizontal well |
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| CN101587760A (en) | 2009-11-25 |
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Owner name: CHINA PETROLEUM +. NATURAL GAS CO., LTD. Free format text: FORMER OWNER: DRILLING TECHNOLOGY INSTITUTE OF CNPC LIAOHE OIL FIELD Effective date: 20120515 |
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Free format text: CORRECT: ADDRESS; FROM: 124010 PANJIN, LIAONING PROVINCE TO: 100007 DONGCHENG, BEIJING |
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Effective date of registration: 20120515 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: China Petroleum & Natural Gas Co., Ltd. Address before: 124010 Xinglongtai District, Liaoning, Panjin Patentee before: Drilling Technology Institute of CNPC Liaohe Oil Field |