CN103244085A - Oil displacement method for electrophoresis oil layers - Google Patents
Oil displacement method for electrophoresis oil layers Download PDFInfo
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- CN103244085A CN103244085A CN2013101573398A CN201310157339A CN103244085A CN 103244085 A CN103244085 A CN 103244085A CN 2013101573398 A CN2013101573398 A CN 2013101573398A CN 201310157339 A CN201310157339 A CN 201310157339A CN 103244085 A CN103244085 A CN 103244085A
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Abstract
The invention discloses an oil displacement method for electrophoresis oil layers. The oil displacement method for electrophoresis oil layers includes that a plurality of auxiliary oil wells are arranged on the periphery of a main oil well in a wheel poke manner, a plurality of positive electrodes are arranged on an oil layer in the main oil well, a plurality of negative electrodes are arranged on an oil layer of each auxiliary oil well, the positive electrodes are connected with a positive electrode of a power source, the negative electrodes are connected with a negative electrode of the power source, then the power source is done to be switched on, and electric energy of the power source is high-voltage direct current. The oil displacement method for the electrophoresis oil layers is low in investment, large oil-layer effected area and high in energy source utilization rate, and can displace crude oil in the oil layers by high-voltage electric field force, avoid coking and damage at the electrodes, and increase total recovery rate and production of crude oil.
Description
Technical field
The present invention relates to the oil stratum and transform production practice technology, particularly electrophoresis oil reservoir flooding method.
Background technology
Current is steam soak and exploitation via steam injection for viscous crude and the high the most frequently used technology of exploitation of coagulating oil, also has the hollow rod electric-heating technology in addition, and pour point depressant for crude oil handle up, annotate flue gas or handle up, technology such as stratum electrical heating, the limitation of these technology is a: steam injection needs huge investment of initial stage; B: the hollow stem electrical heating is subjected to heat rating very little; C: heat injection chemical heating agent, pour-point depressant, microorganism, biology enzyme and flue gas are carried out the viscosity reduction pour point depression, and effect is limited; D: present technology is because the very easily coking damage of electrical heating power large electrode place; E: electric-heating technology only is that oil reservoir is heated in order to reduce viscosity of crude, and energy consumption is higher, and effect has limitation.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned weak point, providing a kind of invests little, oil reservoir and is imitated the high-tension electricity field force that utilizes that area is big, energy utilization rate is high crude oil in the oil reservoir is driven, can avoid very easily coking damage phenomenon of electrode place again, thereby increase the electrophoresis oil reservoir flooding method of crude oil overall recovery factor and oil production.
The technical solution adopted in the present invention, electrophoresis oil reservoir flooding method is to establish several secondary oil wells around main oil well, described secondary oil well is the vehicle wheel spoke shape and arranges around main oil well, several positive electrodes are established at oil reservoir position in the described main oil well, several negative electrodes are established at oil reservoir position in described each auxiliary shaft, and the positive pole of described positive electrode and power supply joins, and the negative pole of negative electrode and power supply joins, close a floodgate then and switch on, the electric energy of its power supply is high voltage direct current.
As a kind of improvement of the present invention: the electric current of described power supply, voltage, time, frequency can be regulated and control by variable frequency control cabinet and silicon controlled rectifier (SCR).
Improve as another kind of the present invention: described electrode is the High-Voltage Insulation electrode.
As another improvement of the present invention: described electrode is the semi-conducting electrode with certain conductance.
Crude oil in the oil well and the salt solution of high salinity are mixed into colloid and store in sandstone pores, degree of porosity is from a few to tens of in general, and oil saturation is from a few to tens of, such as degree of porosity 9-36%, oil saturation is 15-65%, otherwise also can claim oil reservoir water saturation 65-15%.Electrophoresis oil reservoir flooding method of the present invention, behind the logical upward high voltage direct current of combined floodgate, form the closed-loop path between positive electrode in the main oil well and the negative electrode in the secondary oil well, owing to there is the existence of high voltage electric field to make the colloid in the oil reservoir produce electrophoretic action to drive the crude oil flow in the oil reservoir, improve the flowability of colloid crude oil, reduce the flowability of water, driving crude oil to main oil well is anodal oil well, has increased the method for crude oil, viscous crude, crude oil with high solidifying point overall recovery factor and oil production.
The specific embodiment
Electrophoresis oil reservoir flooding method of the present invention, 30～700 meters several secondary oil wells of peripheral hardware around main oil well, secondary oil well is the vehicle wheel spoke shape and arranges around main oil well, several positive electrodes are put at oil reservoir position in the main oil well, it can be a positive electrode, also can be a plurality of positive electrodes, several negative electrodes are established at oil reservoir position in each auxiliary shaft, such as putting 2～8 negative electrodes, the positive pole of positive electrode and power supply joins, and the negative pole of negative electrode and power supply joins, close a floodgate then and carry out the HVDC energising, between positive electrode and negative electrode because the existence of high voltage electric field and in oil reservoir, produce electrophoresis, thereby the crude oil in the oil reservoir is driven, thereby again since the existence of electric polarity can a displacement of reservoir oil not expelling water realize not expelling water of the selective displacement of reservoir oil.
Because distance, oil reservoir lithology difference between oil reservoir thickness, the electrode need be to electric current, voltage, time, the frequency adjustment of power supply.Source current of the present invention, voltage, time, frequency are adjustable, such as regulating and control by variable frequency control cabinet and silicon controlled rectifier (SCR).
Electrode of the present invention is the High-Voltage Insulation electrode, such as adopting insulating ceramics electrode or teflon insulation electrode.
Electrode of the present invention also can be the semi-conducting electrode with certain conductance.
The present invention can utilize the electrical network electricity, also can utilize wind-powered electricity generation and solar-electricity.
Technology of reservoir sweep of the present invention and routine techniques difference are: 1, the conventional waterflooding displacement of reservoir oil, 2, the conventional notes activating agent displacement of reservoir oil, 3, the conventional microbial oil displacement of annotating, 4, carbon dioxide injection, 5, the air displacement of reservoir oil, the natural gas injection displacement of reservoir oil, etc. all routine techniques be that depended on pressure drives, profit extraction together comes.Technical method of the present invention is to utilize the colloid admixture of the electric field force displacement of reservoir oil, a displacement of reservoir oil and expelling water not only has the driving effect to colloid crude oil, and water is not had the driving effect.
Claims (4)
1. electrophoresis oil reservoir flooding method, it is characterized in that: around main oil well, establish several secondary oil wells, described secondary oil well is the vehicle wheel spoke shape and arranges around main oil well, several positive electrodes are established at oil reservoir position in the described main oil well, several negative electrodes are established at oil reservoir position in described each auxiliary shaft, and the positive pole of described positive electrode and power supply joins, and the negative pole of negative electrode and power supply joins, close a floodgate then and switch on, the electric energy of its power supply is high voltage direct current.
2. electrophoresis oil reservoir flooding method according to claim 1, it is characterized in that: the electric current of described power supply, voltage, time, frequency can be regulated and control by variable frequency control cabinet and silicon controlled rectifier (SCR).
3. electrophoresis oil reservoir flooding method according to claim 1 and 2, it is characterized in that: described electrode is the High-Voltage Insulation electrode.
4. electrophoresis oil reservoir flooding method according to claim 3, it is characterized in that: described electrode is the semi-conducting electrode with certain conductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101573398A CN103244085A (en) | 2013-04-28 | 2013-04-28 | Oil displacement method for electrophoresis oil layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101573398A CN103244085A (en) | 2013-04-28 | 2013-04-28 | Oil displacement method for electrophoresis oil layers |
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| Publication Number | Publication Date |
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| CN103244085A true CN103244085A (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101573398A Pending CN103244085A (en) | 2013-04-28 | 2013-04-28 | Oil displacement method for electrophoresis oil layers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014367A (en) * | 2016-06-08 | 2016-10-12 | 关俊华 | Oil-water well positive colloid electrostatic field assisted profile control and flooding and water plugging method |
| CN110863809A (en) * | 2019-10-22 | 2020-03-06 | 中国石油化工股份有限公司 | Method for compositely displacing oil by utilizing electric field and microorganisms |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3946809A (en) * | 1974-12-19 | 1976-03-30 | Exxon Production Research Company | Oil recovery by combination steam stimulation and electrical heating |
| CN1615393A (en) * | 2001-12-10 | 2005-05-11 | 艾伯塔科学研究机构 | Wet electric heating process |
| CN1952346A (en) * | 2005-10-17 | 2007-04-25 | 黄旭辉 | Method for improving petroleum recovery efficiency by adding electric current into oil reservoir |
| CN101641495A (en) * | 2007-03-22 | 2010-02-03 | 埃克森美孚上游研究公司 | Granular electrical connections for in situ formation heating |
| CN201972678U (en) * | 2011-03-02 | 2011-09-14 | 东北石油大学 | Device for utilizing direct current electric field to improve oilfield recovery ratio |
-
2013
- 2013-04-28 CN CN2013101573398A patent/CN103244085A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3946809A (en) * | 1974-12-19 | 1976-03-30 | Exxon Production Research Company | Oil recovery by combination steam stimulation and electrical heating |
| CN1615393A (en) * | 2001-12-10 | 2005-05-11 | 艾伯塔科学研究机构 | Wet electric heating process |
| CN1952346A (en) * | 2005-10-17 | 2007-04-25 | 黄旭辉 | Method for improving petroleum recovery efficiency by adding electric current into oil reservoir |
| CN101641495A (en) * | 2007-03-22 | 2010-02-03 | 埃克森美孚上游研究公司 | Granular electrical connections for in situ formation heating |
| CN201972678U (en) * | 2011-03-02 | 2011-09-14 | 东北石油大学 | Device for utilizing direct current electric field to improve oilfield recovery ratio |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014367A (en) * | 2016-06-08 | 2016-10-12 | 关俊华 | Oil-water well positive colloid electrostatic field assisted profile control and flooding and water plugging method |
| CN106014367B (en) * | 2016-06-08 | 2020-09-08 | 关俊华 | Oil-water well positive electricity gel electrostatic field auxiliary profile control, flooding and water plugging method |
| CN110863809A (en) * | 2019-10-22 | 2020-03-06 | 中国石油化工股份有限公司 | Method for compositely displacing oil by utilizing electric field and microorganisms |
| CN110863809B (en) * | 2019-10-22 | 2022-01-28 | 中国石油化工股份有限公司 | Method for compositely displacing oil by utilizing electric field and microorganisms |
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| 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: 20130814 |