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Research of ultrasonic treatment of an oil reservoir

UDK: 622.276.6
DOI: 10.24887/0028-2448-2018-8-60-63
Key words: oil, well, permeability, flow rate, ultrasonic, acoustic treatment, neutron control
Authors: D.N. Gulyaev (Gubkin Russian State University of Oil and Gas NIU), N.E. Lazutkina (Gubkin Russian State University of Oil and Gas NIU), Yu.F. Zhuikov (Institute of Geophysical and Radiation Technologies of the International Academy of Sciences of Higher School), A.V. Ilyinskiy (Institute of Geophysical and Radiation Technologies of the International Academy of Sciences of Higher School), A.A. Rukhman (Institute of Geophysical and Radiation Technologies of the International Academy of Sciences of Higher School), A.E. Shikanov (National Research Nuclear University MEPhI), E.A. Shikanov (Spetsautoengineering OOO)

The formation permeability decreases in the process of oil wells operation. Ultrasonic treatment ofВ  the reservoir is an effective method of increasing the permeability without the risk of damage to nature. The method of acoustic treatment can be used as an additional method after applying the methods of physicochemical refining. At the same time, it should provide for increasing the effect of removal of solid particles and products of chemical treatment reactions from the treated zone by pressure drawdown. The experience of successful application of acoustic treatment at oil fields of Tatarstan and Western Siberia is analyzed. A magnetostrictive mechanical system, on which a variable voltage with a frequency of 10-20 kHz and a power of up to 5 kW was applied from the earth's surface via a geophysical cable, was used to create an ultrasonic field in the borehole. An algorithm for approximate evaluation of ultrasonic wave parameters in the reservoir is proposed. A formula for the wave damping coefficient is obtained. The effectiveness of acoustic treatmentВ  to increase permeability is shown experimentally by the method of neutron logging. It is established that the effect of the treatment begins to appear at a density of the emitted acoustic power of 20 kW/m2, the exposure time of 4–12 hours and the frequency of the acoustic generator selected within 10–20 kHz. It is established that the acoustic treatment has resonant behavior. An estimate of the effective zone radius for different wells under study is given.

References

1. Kuznetsov O.L., Efimova S.A., Primenenie ul'trazvuka v neftyanoy promyshlennosti (Application of ultrasound in the petroleum industry), Moscow: Nedra Publ., 1983, 192 р.

2. Atamanov V.V., Zhuykov Yu.F., Zilonov M.O., Popova A.V., Ekologicheskaya bezopasnost' i akusticheskoe vozdeystvie (Environmental safety and acoustic impact), Proceedings of International Scientific Conference “Problemy ekologii i bezopasnosti zhiznedeyatel'nosti” (Problems of ecology and life safety), Moscow, 2002, pp. 218–222.

3. Afanasenkov M.I., Zhuykov Yu.F., Kul'pin L.G. et al., Multipurpose technology of complex acoustical-chemical impact & control (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2001, no. 4, pp. 41–45.

4. Utility patent no. 168526 RF, Formirovatel' temperaturnogo i akusticheskogo poley v skvazhine (Former of temperature and acoustic fields in the well), Inventors: Bogdanovich B.Yu., Dmitriev M.S., Il'inskiy A.V., Kozlovskiy K.I., Kolyaskin A.D., Nesterovich A.Yu., Ponomarenko A.G., Rukhman A.A., Shikanov A.E.

5. Patent no. 2631451 RF, Method to increase oil recovery of formation with high viscosity oil, Inventors:В  Bogdanovich B.Yu., Il'inskiy A.V., Nesterovich A.Yu., Ponomarenko A.G., Rukhman A.A., Shikanov A.E.

6. Zhuykov Yu.F., Mikhaylov L.V., Shikanov E.A., Matematicheskoe modelirovanie akusticheskikh voln v stokhasticheskoy srede (Mathematical modeling of acoustic waves in a stochastic medium), ProceedingsВ  of International ConfГ©rence "Dynamical System Modeling and Stability Investigation". - Kyiv, 2003, p. 171.

7. Meyer V.A., Vaganov P.A., Osnovy yadernoy geofiziki (Fundamentals of nuclear geophysics), Leningrad:Publ. of LU, 1985, 408 p.

8. Bessarabskiy Yu.G., Bogolyubov E.P., Kurdyumov I.G. et al., Borehole neutron emitter (In Russ.), Pribory i tekhnika eksperimenta =Instruments and Experimental Techniques, 1994, no. 5, pp.206–207.

9. Patent no. 2517824 RF, Method for determination of productive formation status by pulsed neutron method, Inventors: Berdonosova N.V., Bogdanovich B.Yu., Voronchikhin S.Yu., Il'inskiy A.V., Nesterovich A.V., Sbrodov V.I., Khasaya D.R., Shikanov A.E., Shikanov E.A.

10. Rukovodstvo po primeneniyu promyslovo-geofizicheskikh metodov dlya kontrolya za razrabotkoy neftyanykh mestorozhdeniy (Guidelines on the application of production log test to control the oil fields development), Moscow: Nedra Publ., 1978, pp. 52–86.

The formation permeability decreases in the process of oil wells operation. Ultrasonic treatment ofВ  the reservoir is an effective method of increasing the permeability without the risk of damage to nature. The method of acoustic treatment can be used as an additional method after applying the methods of physicochemical refining. At the same time, it should provide for increasing the effect of removal of solid particles and products of chemical treatment reactions from the treated zone by pressure drawdown. The experience of successful application of acoustic treatment at oil fields of Tatarstan and Western Siberia is analyzed. A magnetostrictive mechanical system, on which a variable voltage with a frequency of 10-20 kHz and a power of up to 5 kW was applied from the earth's surface via a geophysical cable, was used to create an ultrasonic field in the borehole. An algorithm for approximate evaluation of ultrasonic wave parameters in the reservoir is proposed. A formula for the wave damping coefficient is obtained. The effectiveness of acoustic treatmentВ  to increase permeability is shown experimentally by the method of neutron logging. It is established that the effect of the treatment begins to appear at a density of the emitted acoustic power of 20 kW/m2, the exposure time of 4–12 hours and the frequency of the acoustic generator selected within 10–20 kHz. It is established that the acoustic treatment has resonant behavior. An estimate of the effective zone radius for different wells under study is given.

References

1. Kuznetsov O.L., Efimova S.A., Primenenie ul'trazvuka v neftyanoy promyshlennosti (Application of ultrasound in the petroleum industry), Moscow: Nedra Publ., 1983, 192 р.

2. Atamanov V.V., Zhuykov Yu.F., Zilonov M.O., Popova A.V., Ekologicheskaya bezopasnost' i akusticheskoe vozdeystvie (Environmental safety and acoustic impact), Proceedings of International Scientific Conference “Problemy ekologii i bezopasnosti zhiznedeyatel'nosti” (Problems of ecology and life safety), Moscow, 2002, pp. 218–222.

3. Afanasenkov M.I., Zhuykov Yu.F., Kul'pin L.G. et al., Multipurpose technology of complex acoustical-chemical impact & control (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2001, no. 4, pp. 41–45.

4. Utility patent no. 168526 RF, Formirovatel' temperaturnogo i akusticheskogo poley v skvazhine (Former of temperature and acoustic fields in the well), Inventors: Bogdanovich B.Yu., Dmitriev M.S., Il'inskiy A.V., Kozlovskiy K.I., Kolyaskin A.D., Nesterovich A.Yu., Ponomarenko A.G., Rukhman A.A., Shikanov A.E.

5. Patent no. 2631451 RF, Method to increase oil recovery of formation with high viscosity oil, Inventors:В  Bogdanovich B.Yu., Il'inskiy A.V., Nesterovich A.Yu., Ponomarenko A.G., Rukhman A.A., Shikanov A.E.

6. Zhuykov Yu.F., Mikhaylov L.V., Shikanov E.A., Matematicheskoe modelirovanie akusticheskikh voln v stokhasticheskoy srede (Mathematical modeling of acoustic waves in a stochastic medium), ProceedingsВ  of International ConfГ©rence "Dynamical System Modeling and Stability Investigation". - Kyiv, 2003, p. 171.

7. Meyer V.A., Vaganov P.A., Osnovy yadernoy geofiziki (Fundamentals of nuclear geophysics), Leningrad:Publ. of LU, 1985, 408 p.

8. Bessarabskiy Yu.G., Bogolyubov E.P., Kurdyumov I.G. et al., Borehole neutron emitter (In Russ.), Pribory i tekhnika eksperimenta =Instruments and Experimental Techniques, 1994, no. 5, pp.206–207.

9. Patent no. 2517824 RF, Method for determination of productive formation status by pulsed neutron method, Inventors: Berdonosova N.V., Bogdanovich B.Yu., Voronchikhin S.Yu., Il'inskiy A.V., Nesterovich A.V., Sbrodov V.I., Khasaya D.R., Shikanov A.E., Shikanov E.A.

10. Rukovodstvo po primeneniyu promyslovo-geofizicheskikh metodov dlya kontrolya za razrabotkoy neftyanykh mestorozhdeniy (Guidelines on the application of production log test to control the oil fields development), Moscow: Nedra Publ., 1978, pp. 52–86.



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