US20140116683A1 - Method for increasing the permeability of the bottom well-bore region of a seam (is11.0138-us-pct) - Google Patents
Method for increasing the permeability of the bottom well-bore region of a seam (is11.0138-us-pct) Download PDFInfo
- Publication number
- US20140116683A1 US20140116683A1 US14/112,886 US201214112886A US2014116683A1 US 20140116683 A1 US20140116683 A1 US 20140116683A1 US 201214112886 A US201214112886 A US 201214112886A US 2014116683 A1 US2014116683 A1 US 2014116683A1
- Authority
- US
- United States
- Prior art keywords
- formation
- wellbore
- electrodes
- zone
- targeted zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000035699 permeability Effects 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims description 17
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 12
- 230000005684 electric field Effects 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims description 2
- 230000000638 stimulation Effects 0.000 abstract description 15
- 238000002474 experimental method Methods 0.000 description 7
- 238000001311 chemical methods and process Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000010306 acid treatment Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000004936 stimulating effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005370 electroosmosis Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/27—Methods for stimulating production by forming crevices or fractures by use of eroding chemicals, e.g. acids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
Definitions
- the invention is related to the well services in oil-field industry, particularly, to the methods for increasing permeability of a near-wellbore zone of a formation by stimulation of a fluid inflow into a wellbore.
- a stimulation of a fluid inflow into a wellbore is required to recover and improve the near-wellbore zone filtration characteristics, basically through improved permeability of the near-wellbore zone and reduced fluid viscosity.
- acid treatment and formation hydraulic fracturing see, for example, V.I. Kudinov, Osnovy neftegazopromyslovogo dela ( Foundations of Oil and Gas Formation Industry ), Moscow, 2005, pp. 428-429).
- Acid treatment and formation hydraulic fracturing enable stimulation of a fluid inflow into a wellbore by creating high-permeable paths for the fluid inflow into the wellbore hereby the selection of a specific treatment method and a quality of the works completed are critical for the efficiency of the future well operation. Thus, incorrectly performed fluid inflow stimulation may, for example, result in the need to completely stop the future wellbore operation.
- To intensify the fluid inflow during the matrix treatment and formation hydraulic fracturing various liquid and solid chemicals are injected into a wellbore.
- various substances are injected into a wellbore under large pressure which results in cracks in the rock.
- the proposed method provides for increased reliability and efficiency of stimulating a fluid inflow into a wellbore, enhanced speed of stimulating with simultaneous reduction of the risk of incorrect performing thereof as well as reduced costs.
- the method comprises carrying out a stimulation of a fluid flow into a wellbore comprising injecting chemical substances into a targeted zone of a formation and applying an electric field to the targeted zone of the formation.
- the stimulation of the fluid flow into the wellbore is an acid formation treatment or a hydraulic fracturing of the formation.
- Additional magnetic, thermal, acoustic treatment or a combination of thereof can be applied to the targeted zone of the formation zone during the stimulation.
- the electric filed can be applied by electrodes. At least one of the electrodes is disposed in the wellbore on the level of the targeted zone.
- One of the electrodes can be disposed in the wellbore on the level of the targeted zone and the other electrode can be disposed on the surface.
- One of the electrodes can be disposed lower than the targeted zoned of the formation while the other can be disposed higher than the targeted zone of the formation being treated.
- Casings and tubing can be used as the electrodes.
- FIG. 1 The invention is explained by a drawing ( FIG. 1 ) showing a system providing an electric impact onto a formation in which stimulation of the fluid inflow is performed.
- the proposed method is based on applying an electric field to a formation in which stimulation of a fluid inflow is performed.
- the effect of the electrical stimulation depends on physical parameters of the formation and is determined by positioning of electrodes, value and frequency of the electric field being created as well as a power of a power supply being used.
- the electric impact causes enhancement of physico-chemical processes in the formation and in space inside a wellbore during the stimulation of a fluid inflow into the wellbore.
- the electric field causes the appearance of electric currents as well as an electro-kinetic, phenomena like electroosmosis or electrophoresis. These phenomena result in the motion of charged particles and the fluid and therefore result in the intensification of current physico-chemical processes. Additional application of magnetic field promotes additional motion of the charged particles.
- Extra temperature heating also causes the intensification of physico-chemical processes in the area being heated through intensification of the substances' thermal diffusion.
- Additional acoustic impact using a sound-emitting device also enhances the physico-chemical processes due to additional oscillations of the particles caused by the sound wave passage.
- any of the impacts above may be applied locally or directionally which enables intensification of the physico-chemical processes (such as chemical reaction speed) in the required area.
- FIG. 1 A system that allows to create an electric field inside a wellbore and a formation is shown on FIG. 1 where 1 is a current and voltage generator, 2 —electrodes connected to the current and voltage generator 1 , 3 —a targeted zone of the formation in which stimulation of a fluid inflow is performed, chemicals have been injected into this targeted zone 3 .
- 1 is a current and voltage generator
- 2 electrodes connected to the current and voltage generator 1 , 3
- the other electrode may be located in an adjacent wellbore (see FIG. 1 a ) or on the surface (see FIG. 1 b ).
- the electrodes may also be disposed in the wellbore above and below the targeted zone 3 being treated (see FIG. 1 c ). Casings and tubings may also be used as electrodes.
- a source of magnetic field can be placed into the wellbore at the level of the targeted zone 3 being treated. If a sound emitting device and/or a thermal heater is used they also can be disposed in the wellbore at the level of the targeted zone 3 being treated. Different components of the instruments used may be located both on the same device and on different and their power may be supplied by a cable or by batteries or accumulators.
- J218 breaker concentration for YF130LGD gel destruction is about 10 pounds/1000 gallons (1,2 kg/m3) that is two times lower than for carrying out this experiment.
- the breaker operation temperature range is 52-107° C. (125-225° F.)
- the breaker is activated by adding special chemical catalysts.
- One sample of the prepared gel with the breaker portion was placed into a tank without electrodes and thoroughly mixed. The other sample was placed into the system with electrodes.
- the third experiment was performed to prove that at high temperatures there will be no gel destructions.
- 500 ml of YF130LGD gel mixed with 2 g of J218 breaker was prepared and placed into a pre-heated tank, and then into an oven at 100° C. (210° F.). After 15 minutes of the temperature action destruction of maximum 25-30% of gel was noted.
Abstract
To increase permeability of a near-wellbore zone of a formation an operation on stimulation of a fluid flow into a wellbore is performed, the operation comprising injecting chemical substances into a targeted zone of the formation. During the stimulation an electrical field is applied to the targeted zone of the formation.
Description
- This application is a U.S. National Stage Application under 35 U.S.C. §371 and claims priority to Patent Cooperation Treaty Application Number PCT/IB2012/000282 filed Apr. 13, 2012, which claims priority to Russian Patent Application No. 2011115860 filed Apr. 22, 2011. Both of these applications are incorporated herein by reference in their entireties.
- The invention is related to the well services in oil-field industry, particularly, to the methods for increasing permeability of a near-wellbore zone of a formation by stimulation of a fluid inflow into a wellbore.
- A stimulation of a fluid inflow into a wellbore is required to recover and improve the near-wellbore zone filtration characteristics, basically through improved permeability of the near-wellbore zone and reduced fluid viscosity. Among the most efficient methods of the stimulation of fluids' influx from a formation are acid treatment and formation hydraulic fracturing (see, for example, V.I. Kudinov, Osnovy neftegazopromyslovogo dela (Foundations of Oil and Gas Formation Industry), Moscow, 2005, pp. 428-429). Acid treatment and formation hydraulic fracturing enable stimulation of a fluid inflow into a wellbore by creating high-permeable paths for the fluid inflow into the wellbore hereby the selection of a specific treatment method and a quality of the works completed are critical for the efficiency of the future well operation. Thus, incorrectly performed fluid inflow stimulation may, for example, result in the need to completely stop the future wellbore operation. To intensify the fluid inflow during the matrix treatment and formation hydraulic fracturing various liquid and solid chemicals are injected into a wellbore. Thus, during hydraulic fracturing various substances are injected into a wellbore under large pressure which results in cracks in the rock. To prevent a closure of the cracks in the rock solid particles are injected into the wellbore using a viscous gel—propping agent (proppant). Due to high viscosity of the gel the crack becomes low-permeable and to improve its permeability, as a rule, reverse recirculation is used. To reduce the gel viscosity different chemicals—breakers—are added to the solution and, when penetrating the formation, they can reduce the gel viscosity. The chemicals being added are, as a rule, expensive, but not always efficient. Besides, engineers normally are not able to impact the breakers' activity after the chemicals have been injected into the wellbore. Therefore, among the key disadvantages of the existing methods for increasing the near-wellbore zone permeability are high costs, low speed and inability to monitor the reaction speed after the chemicals have been injected into the wellbore.
- The proposed method provides for increased reliability and efficiency of stimulating a fluid inflow into a wellbore, enhanced speed of stimulating with simultaneous reduction of the risk of incorrect performing thereof as well as reduced costs.
- The method comprises carrying out a stimulation of a fluid flow into a wellbore comprising injecting chemical substances into a targeted zone of a formation and applying an electric field to the targeted zone of the formation.
- The stimulation of the fluid flow into the wellbore is an acid formation treatment or a hydraulic fracturing of the formation.
- Additional magnetic, thermal, acoustic treatment or a combination of thereof can be applied to the targeted zone of the formation zone during the stimulation.
- The electric filed can be applied by electrodes. At least one of the electrodes is disposed in the wellbore on the level of the targeted zone.
- One of the electrodes can be disposed in the wellbore on the level of the targeted zone and the other electrode can be disposed on the surface.
- One of the electrodes can be disposed lower than the targeted zoned of the formation while the other can be disposed higher than the targeted zone of the formation being treated.
- Casings and tubing can be used as the electrodes.
- The invention is explained by a drawing (
FIG. 1 ) showing a system providing an electric impact onto a formation in which stimulation of the fluid inflow is performed. - The proposed method is based on applying an electric field to a formation in which stimulation of a fluid inflow is performed. The effect of the electrical stimulation depends on physical parameters of the formation and is determined by positioning of electrodes, value and frequency of the electric field being created as well as a power of a power supply being used. The electric impact causes enhancement of physico-chemical processes in the formation and in space inside a wellbore during the stimulation of a fluid inflow into the wellbore. Thus, for example, the electric field causes the appearance of electric currents as well as an electro-kinetic, phenomena like electroosmosis or electrophoresis. These phenomena result in the motion of charged particles and the fluid and therefore result in the intensification of current physico-chemical processes. Additional application of magnetic field promotes additional motion of the charged particles. Extra temperature heating also causes the intensification of physico-chemical processes in the area being heated through intensification of the substances' thermal diffusion. Additional acoustic impact using a sound-emitting device also enhances the physico-chemical processes due to additional oscillations of the particles caused by the sound wave passage. Hereby any of the impacts above may be applied locally or directionally which enables intensification of the physico-chemical processes (such as chemical reaction speed) in the required area.
- A system that allows to create an electric field inside a wellbore and a formation is shown on
FIG. 1 where 1 is a current and voltage generator, 2—electrodes connected to the current andvoltage generator 1, 3—a targeted zone of the formation in which stimulation of a fluid inflow is performed, chemicals have been injected into this targeted zone 3. For creating the electric field different combinations of electrodes positioning in the wellbore are possible, but at least one of the electrodes should be disposed in the wellbore at the level of the targeted zone 3 being treated. The other electrode may be located in an adjacent wellbore (seeFIG. 1 a) or on the surface (seeFIG. 1 b). The electrodes may also be disposed in the wellbore above and below the targeted zone 3 being treated (seeFIG. 1 c). Casings and tubings may also be used as electrodes. A source of magnetic field can be placed into the wellbore at the level of the targeted zone 3 being treated. If a sound emitting device and/or a thermal heater is used they also can be disposed in the wellbore at the level of the targeted zone 3 being treated. Different components of the instruments used may be located both on the same device and on different and their power may be supplied by a cable or by batteries or accumulators. - As an example, three series of experiments were conducted in order to check the feasibility of described method. These experiments were carried out at room temperature 22° C. (72° F.). For the first experiment 750 ml of YF130LGD gel was prepared and put into a tank with plane electrodes attached thereto. The electrodes were connected to a standard power generating unit with AC output of 100V at ˜50 Hz. The distance between the electrodes was about 10 cm. After 15 minutes, only a slight gel destruction near the surface of the electrode was observed. That can be a result of local temperature increase up to 80° C. (180° F.) near the electrodes. The temperature was measured immediately after power was off.
- For the second experiment two samples of YF130LGD hydraulic-fracture gel were prepared (500 ml each) and 2 g of J218 breaker was added to each gel sample. J218 breaker concentration for YF130LGD gel destruction is about 10 pounds/1000 gallons (1,2 kg/m3) that is two times lower than for carrying out this experiment. But it should be mentioned that the breaker operation temperature range is 52-107° C. (125-225° F.), moreover, the breaker is activated by adding special chemical catalysts. One sample of the prepared gel with the breaker portion was placed into a tank without electrodes and thoroughly mixed. The other sample was placed into the system with electrodes. After 7 minutes of AC applying it was detected that almost all gel (90%) in the tank under voltage was destroyed (the gel viscosity reduced to water viscosity value). In the tank without AC application only 10-15% gel was destroyed. During the second experiment the temperature value was 95° C. (200° F.) on the electrodes and 35° C. (95° F.) in the centre of the tank after 7 minutes of the AC impact.
- The third experiment was performed to prove that at high temperatures there will be no gel destructions. For this purpose 500 ml of YF130LGD gel mixed with 2 g of J218 breaker was prepared and placed into a pre-heated tank, and then into an oven at 100° C. (210° F.). After 15 minutes of the temperature action destruction of maximum 25-30% of gel was noted.
- Comparing the results of electrical field and temperature impact in presence of breaker, the advantage of the electrical field impact for the gel destruction becomes evident.
Claims (8)
1. A method for increasing permeability of a near-wellbore zone of a formation, comprising:
injecting chemical substances into a targeted zone of the formation to stimulate fluid flow into a wellbore, and
applying an electrical field to the targeted zone of the formation.
2. The method of claim 1 , wherein the chemical substances comprise an acid formation treatment.
3. The method of claim 1 , wherein the injecting comprises hydraulic fracturing of the formation.
4. The method of claim 1 , wherein during the injecting, an additional treatment is applied to the targeted zone of the formation, the additional treatment is selected from a group consisting of magnetic, thermal, acoustic, and a combination thereof.
5. The method of claim 1 , wherein the electrical filed is applied by electrodes, at least one of the electrodes is disposed in the wellbore on the level of the targeted zone of the formation.
6. The method of claim 5 , wherein one of the electrodes is disposed on the surface.
7. The method of claim 1 , wherein the electrical filed is applied by electrodes, one of the electrodes is disposed lower than the targeted zone of the formation while the other electrode is disposed higher than the targeted zone of the formation.
8. The method of claim 1 , wherein the electrodes comprise casing and tubing.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2011115860/03A RU2473799C2 (en) | 2011-04-22 | 2011-04-22 | Method for increasing bottom-hole formation zone permeability |
RU2011115860 | 2011-04-22 | ||
PCT/RU2012/000282 WO2012144936A1 (en) | 2011-04-22 | 2012-04-13 | Method for increasing the permeability of the bottom well-bore region of a seam |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140116683A1 true US20140116683A1 (en) | 2014-05-01 |
Family
ID=47041815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/112,886 Abandoned US20140116683A1 (en) | 2011-04-22 | 2012-04-13 | Method for increasing the permeability of the bottom well-bore region of a seam (is11.0138-us-pct) |
Country Status (3)
Country | Link |
---|---|
US (1) | US20140116683A1 (en) |
RU (1) | RU2473799C2 (en) |
WO (1) | WO2012144936A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120327743A1 (en) * | 2011-06-23 | 2012-12-27 | Schlumberger Technology Corporation | Method for determining properties of a formation |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106018237B (en) * | 2016-05-27 | 2018-10-02 | 哈尔滨工业大学 | A kind of rock core electrokinetic penetration rate measuring system |
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US3288648A (en) * | 1963-02-04 | 1966-11-29 | Pan American Petroleum Corp | Process for producing electrical energy from geological liquid hydrocarbon formation |
US3696866A (en) * | 1971-01-27 | 1972-10-10 | Us Interior | Method for producing retorting channels in shale deposits |
US4084637A (en) * | 1976-12-16 | 1978-04-18 | Petro Canada Exploration Inc. | Method of producing viscous materials from subterranean formations |
US4487257A (en) * | 1976-06-17 | 1984-12-11 | Raytheon Company | Apparatus and method for production of organic products from kerogen |
US4495990A (en) * | 1982-09-29 | 1985-01-29 | Electro-Petroleum, Inc. | Apparatus for passing electrical current through an underground formation |
US4667738A (en) * | 1984-01-20 | 1987-05-26 | Ceee Corporation | Oil and gas production enhancement using electrical means |
US5012868A (en) * | 1989-03-14 | 1991-05-07 | Uentech Corporation | Corrosion inhibition method and apparatus for downhole electrical heating in mineral fluid wells |
US20090294121A1 (en) * | 2007-11-30 | 2009-12-03 | Chevron U.S.A. Inc. | Pulse fracturing device and method |
US20110303423A1 (en) * | 2010-06-11 | 2011-12-15 | Kaminsky Robert D | Viscous oil recovery using electric heating and solvent injection |
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SU972060A1 (en) * | 1980-12-15 | 1982-11-07 | Ивано-Франковский Институт Нефти И Газа "Водгео" | Method of working hole-bottom area formation |
RU1806392C (en) * | 1991-02-26 | 1993-03-30 | Анатолий Яковлевич Картелев | Electromagnetic field excitation method |
RU2087692C1 (en) * | 1993-09-15 | 1997-08-20 | Научно-производственная фирма "Аквазинэль" | Method of electrochemical treatment of oil and gas wells |
RU2163662C1 (en) * | 2000-02-18 | 2001-02-27 | Исаев Мидхат Кавсарович | Process of action on oil pool |
RU2231631C1 (en) * | 2002-12-15 | 2004-06-27 | Дыбленко Валерий Петрович | Method of development of an oil pool |
AU2007215547A1 (en) * | 2006-02-10 | 2007-08-23 | Exxonmobil Upstream Research Company | Conformance control through stimulus-responsive materials |
US7888295B2 (en) * | 2007-02-08 | 2011-02-15 | Schlumberger Technology Corporation | Crosslinked polymer solutions and methods of use |
AU2009223855B2 (en) * | 2008-03-12 | 2012-05-03 | M-I Drilling Fluids Uk Limited | Methods and systems of treating a wellbore |
-
2011
- 2011-04-22 RU RU2011115860/03A patent/RU2473799C2/en not_active IP Right Cessation
-
2012
- 2012-04-13 WO PCT/RU2012/000282 patent/WO2012144936A1/en active Application Filing
- 2012-04-13 US US14/112,886 patent/US20140116683A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3288648A (en) * | 1963-02-04 | 1966-11-29 | Pan American Petroleum Corp | Process for producing electrical energy from geological liquid hydrocarbon formation |
US3696866A (en) * | 1971-01-27 | 1972-10-10 | Us Interior | Method for producing retorting channels in shale deposits |
US4487257A (en) * | 1976-06-17 | 1984-12-11 | Raytheon Company | Apparatus and method for production of organic products from kerogen |
US4084637A (en) * | 1976-12-16 | 1978-04-18 | Petro Canada Exploration Inc. | Method of producing viscous materials from subterranean formations |
US4495990A (en) * | 1982-09-29 | 1985-01-29 | Electro-Petroleum, Inc. | Apparatus for passing electrical current through an underground formation |
US4667738A (en) * | 1984-01-20 | 1987-05-26 | Ceee Corporation | Oil and gas production enhancement using electrical means |
US5012868A (en) * | 1989-03-14 | 1991-05-07 | Uentech Corporation | Corrosion inhibition method and apparatus for downhole electrical heating in mineral fluid wells |
US20090294121A1 (en) * | 2007-11-30 | 2009-12-03 | Chevron U.S.A. Inc. | Pulse fracturing device and method |
US20110303423A1 (en) * | 2010-06-11 | 2011-12-15 | Kaminsky Robert D | Viscous oil recovery using electric heating and solvent injection |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120327743A1 (en) * | 2011-06-23 | 2012-12-27 | Schlumberger Technology Corporation | Method for determining properties of a formation |
US9013954B2 (en) * | 2011-06-23 | 2015-04-21 | Schlumberger Technology Corporation | Method for determining properties of a formation |
Also Published As
Publication number | Publication date |
---|---|
RU2011115860A (en) | 2012-10-27 |
WO2012144936A1 (en) | 2012-10-26 |
RU2473799C2 (en) | 2013-01-27 |
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