CN104254155A - Segmented differential electric heating cable - Google Patents
Segmented differential electric heating cable Download PDFInfo
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- CN104254155A CN104254155A CN201310258974.5A CN201310258974A CN104254155A CN 104254155 A CN104254155 A CN 104254155A CN 201310258974 A CN201310258974 A CN 201310258974A CN 104254155 A CN104254155 A CN 104254155A
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- cable
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- heating
- electric heating
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Abstract
The invention provides a segmented differential electric heating cable which comprises an upper pump cable and a lower pump cable which are respectively arranged above and below an annular pump in a shaft in a crude oil lifting process, wherein the heating power per meter of the lower pump cable is greater than that of the upper pump cable to form upper and lower segmented differential heating; the heating power of the lower pump cable is at least three times the power per meter of the upper pump cable; the upper pump cable comprises a cable housing and a cable core; the cable core is made of copper; the lower pump cable comprises a cable housing and a cable core; and the cable core is made of nichrome. According to the segmented differential electric heating cable, segmented heating is performed in different positions of the shaft, so that the heating power near the shaft is effectively improved under the condition of constant power consumption, a viscosity reduction effect near the shaft is improved, the defects of the prior art are overcome, and the problem that crude oil in an extremely-viscous block oil well difficultly enters the pump is effectively solved.
Description
Technical field
The present invention relates to petroleum industry electric heating cable, specifically segmentation differentiation electric heating cable, be applicable to spy, the lifting of super-heavy oil deposit enforcement electric heating viscosity reducing oil well.
Background technology
The Lifting Technique that hollow stem electric-heating technology is current spy, super-viscous oil block is conventional.Its know-why mainly utilizes interior kelvin effect that crude oil is heated in pit shaft, and crude oil is given rise to ground from reservoir, thus reaches the object of thickened oil recovery.Hollow rod oil production device is primarily of electric heating control cabinet, hollow rod, heating cable three part composition, and wherein heating cable is the major components realizing heating.
Existing electric heating cable adopts integrated copper core cable, realizes whole pit shaft homogeneous heating.For by heating oil well, because heat is in the lost difference of different depth, cause the range of temperature of pit shaft larger.Show as wellhead temperature in practical application higher, pump intake place temperature is lower, especially higher to viscosity of crude oil well, and this mode of heating viscosity reducing effect is undesirable, effectively can not solve the problem that crude oil enters pump difficulty.
How carrying out electric-heating technology Optimal improvements, pit shaft homogeneous heating is changed into differentiation heating, under the condition that power consumption does not increase, improve heating power near pump barrel, solve crude oil and enter pump difficult problem, is the key improving electrical heating oil well production effect.
Summary of the invention
The object of the present invention is to provide segmentation differentiation electric heating cable, heat stepwise is carried out at pit shaft different parts, when power consumption is constant, effective raising near wellbore heating power, improve viscosity reducing effect, make up the deficiencies in the prior art, effectively solve the problem that super-viscous oil block oil well crude oil enters pump difficulty.
In order to reach above-mentioned purpose, present invention employs following technical scheme, adopt segmentation differentiation electric heating cable, cable under cable and pump on the pump that the upper and lower comprising annular space pump in pit shaft in crude oil lifting process is arranged respectively, under described pump, every meter, cable heating power is greater than every meter, cable heating power on pump, forms the heating of upper and lower segmentation differentiation.
Under described pump, electric cable heating power is at least three times of every meter, cable power on pump.
The described pump cable wrap that powers on draws together cable jacket and cable core, and this cable core is copper material.
Under described pump, cable comprises cable jacket and cable core, and this cable core is nickel Chrome alloy material.
Under described pump, the heat resistance of cable is up to 300 DEG C.
Be compared to prior art, the present invention has following beneficial effect:
By changing the material of cable near pump barrel, the nickel Chrome alloy high to the preferred heating power of cable under pump replaces copper, and every meter of heating power is 3 times of former cable, and heatproof can bring up to 300 DEG C by 205 DEG C, concentrates heating under can realizing pump, improves heating effect under pump.
Becoming pit shaft differentiation from pit shaft homogeneous heating to heat, according to crude oil lifting process to temperature requirement, by adopting unlike material heating cable to pit shaft different parts, can heat stepwise be realized, when power consumption does not increase, improve electric heating effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of segmentation differentiation electric heating cable of the present invention.
In figure: 1, cable on pump; 2, annular space pump; 3, cable under pump.
Embodiment
Detailed description for the present invention and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the present invention.
With reference to accompanying drawing 1, segmentation differentiation electric heating cable, cable 3 under cable 1 and pump on the pump that the upper and lower comprising annular space pump 2 in pit shaft in crude oil lifting process is arranged respectively.Under described pump, every meter, cable heating power is greater than every meter, cable heating power on pump, forms the heating of upper and lower segmentation differentiation.
The material of neighbouring 100 meters of electric heating cables under change pump, temperature tolerance good Nie Chrome alloy replacing copper core high with heating power, changes conventional electric heating cable pit shaft uniform heating pattern, realizes the heating of pit shaft differentiationization, improves heating effect.Nie Chrome alloy every meter of heating power is 3 times of copper core, and heatproof can reach 300 DEG C.
The foregoing is only better enforcement of the present invention, be not used to limit the scope of the claims of the present invention, other use the equivalence of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (5)
1. segmentation differentiation electric heating cable, it is characterized in that, cable under cable and pump on the pump that the upper and lower comprising annular space pump in pit shaft in crude oil lifting process is arranged respectively, under described pump, every meter, cable heating power is greater than every meter, cable heating power on pump, forms the heating of upper and lower segmentation differentiation.
2. segmentation differentiation electric heating cable according to claim 1, is characterized in that, under described pump, electric cable heating power is at least three times of every meter, cable power on pump.
3. segmentation differentiation electric heating cable according to claim 1, is characterized in that, the described pump cable wrap that powers on draws together cable jacket and cable core, and this cable core is copper material.
4. segmentation differentiation electric heating cable according to claim 1, it is characterized in that, under described pump, cable comprises cable jacket and cable core, and this cable core is nickel Chrome alloy material.
5. segmentation differentiation electric heating cable according to claim 1, is characterized in that, under described pump, the heat resistance of cable is up to 300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310258974.5A CN104254155B (en) | 2013-06-26 | 2013-06-26 | Segmentation differentiation electric heating cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310258974.5A CN104254155B (en) | 2013-06-26 | 2013-06-26 | Segmentation differentiation electric heating cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104254155A true CN104254155A (en) | 2014-12-31 |
| CN104254155B CN104254155B (en) | 2016-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310258974.5A Expired - Fee Related CN104254155B (en) | 2013-06-26 | 2013-06-26 | Segmentation differentiation electric heating cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104254155B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105934005A (en) * | 2016-05-06 | 2016-09-07 | 武汉航空仪表有限责任公司 | Novel heater of icing detector |
| CN106640005A (en) * | 2016-12-20 | 2017-05-10 | 中国石油天然气股份有限公司 | Downhole electric heating horizontal well pipe column structure and oil layer heating method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570715A (en) * | 1984-04-06 | 1986-02-18 | Shell Oil Company | Formation-tailored method and apparatus for uniformly heating long subterranean intervals at high temperature |
| CN2335335Y (en) * | 1998-07-02 | 1999-08-25 | 张荣考 | Temp.-controllable all sheathed type energy-saving heating cable |
| CN1667242A (en) * | 2005-03-31 | 2005-09-14 | 辽河石油勘探局 | Swabbing technology for viscous oil and high condensation oil |
| CN101702844A (en) * | 2009-11-13 | 2010-05-05 | 程显军 | Carbon fiber cable for oil tanks, oil pipes in oil wells and oil transmission pipelines |
| CN102979493A (en) * | 2012-12-04 | 2013-03-20 | 尤尼斯油气技术（中国）有限公司 | Gas injection system for combustion of oil in-situ under super-critical pressure and gas injection method thereof |
-
2013
- 2013-06-26 CN CN201310258974.5A patent/CN104254155B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570715A (en) * | 1984-04-06 | 1986-02-18 | Shell Oil Company | Formation-tailored method and apparatus for uniformly heating long subterranean intervals at high temperature |
| CN2335335Y (en) * | 1998-07-02 | 1999-08-25 | 张荣考 | Temp.-controllable all sheathed type energy-saving heating cable |
| CN1667242A (en) * | 2005-03-31 | 2005-09-14 | 辽河石油勘探局 | Swabbing technology for viscous oil and high condensation oil |
| CN101702844A (en) * | 2009-11-13 | 2010-05-05 | 程显军 | Carbon fiber cable for oil tanks, oil pipes in oil wells and oil transmission pipelines |
| CN102979493A (en) * | 2012-12-04 | 2013-03-20 | 尤尼斯油气技术（中国）有限公司 | Gas injection system for combustion of oil in-situ under super-critical pressure and gas injection method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105934005A (en) * | 2016-05-06 | 2016-09-07 | 武汉航空仪表有限责任公司 | Novel heater of icing detector |
| CN106640005A (en) * | 2016-12-20 | 2017-05-10 | 中国石油天然气股份有限公司 | Downhole electric heating horizontal well pipe column structure and oil layer heating method thereof |
| CN106640005B (en) * | 2016-12-20 | 2019-07-09 | 中国石油天然气股份有限公司 | Downhole electric heating horizontal well tube rod structure and its oil reservoir heating means |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104254155B (en) | 2016-04-13 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20180626 |