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Application prospects of wave technology of thermal-gas-chemical formation treatment for oil recovery enhancement

Authors: S.G. Volpin, D.A. Kornaeva, A.R. Saitgareev (VNIIneft OAO, RF, Moscow), N.N. Smirnov , M.N. Kravchenko (Lomonosov Moscow State University, RF, Moscow), N.N. Dieva (Gubkin Russian State University of Oil and Gas, RF, Moscow)

Key words: innovative technology, wave methods, numerical reservoir simulation.

The stimulation technology of hydrocarbon raw production by high pressure impulses is really urgent nowadays. This is due to the fact that a large amount of deposits which are projected for field development are complex systems - fractured reservoirs complicated by presence of clay inclusions. Besides, the formations are often characterized by weak flowability. For example, the vast layers of the Bagenov deposit are very perspective, but too difficult for development because of low permeability of collector and high content of kerogen and shale deposits. The explosion impact technique is considered nowadays as the most perspective direction in field development of hard extractable hydrocarbon raw. The purpose of the present work is the numerical analysis of inleak stimulation by high pressure waves to fractured well. The computer estimation of safety using this shock action method is spent for data of real well that have been simulated by hydraulic fracturing techniques. The stimulation method by high pressure wave can be used as an independent stimulation method for low-permeability reservoirs of heavy hydrocarbons and as of additional stimulation method for reservoirs in which have already been applied another technologies such as fracturing. The simulation results of wave processing were used for real deposits forecasting.
References
1. Dyblenko V.P., Volnovye metody vozdeystviya na neftyanye plasty s trudnoizvlekaemymi zapasami.
Obzor i klassifikatsiya (Wave methods of influence on oil layers with hard-to-recover reserves. Review and
classification), Moscow: Publ. of OAO “VNIIOENG”, 2008, 80 p.
2. Duvanov A.M. et al., Metody intensifikatsii pritokov v neftyanykh i gazovykh skvazhinakh s pomoshch'yu energii vzryva i goreniya vzryvchatykh veshchestv (Stimulation methods in oil and gas wells using the energy
of the explosion and burning of explosives), Moscow: Publ. of VIEMS, 1990, pp. 6 - 25.
3. Smirnov N.N., Nikitin V.F., Maximenko A. et al., Instability and mixing flux in frontal displacement of viscous
fluids from porous media, Physics of Fluids, 2005, V. 17, pp. 84-102.
4. Pestrikov A.V., Basharov A.R., Kravchenko M.N., Vestnik Udmurtskogo universiteta, 2009, no. 4, pp. 107-117.
5. Vol'pin S.G., Dieva N.N., Kravchenko M.N., Proceedings of OAO “VNIIneft'”, 2010, V. 143, pp. 78 – 85.
6. Smirnov N., Dushin V., Nikitin V., Philippov Y., Two phase flows in porous media under microgravity conditions,
Microgravity Science and Tecnology, 2008, September, V. 20, N3-4, pp. 155-160.
7. Savchenko A.V., Proceedings of FTPRPI, 2006, no. 3, pp. 63 – 75.
8. Bourdet D. et al., A new set of type curves simplifies well test analysis, World Oil, 1983, May, pp. 95–106.

Key words: innovative technology, wave methods, numerical reservoir simulation.

The stimulation technology of hydrocarbon raw production by high pressure impulses is really urgent nowadays. This is due to the fact that a large amount of deposits which are projected for field development are complex systems - fractured reservoirs complicated by presence of clay inclusions. Besides, the formations are often characterized by weak flowability. For example, the vast layers of the Bagenov deposit are very perspective, but too difficult for development because of low permeability of collector and high content of kerogen and shale deposits. The explosion impact technique is considered nowadays as the most perspective direction in field development of hard extractable hydrocarbon raw. The purpose of the present work is the numerical analysis of inleak stimulation by high pressure waves to fractured well. The computer estimation of safety using this shock action method is spent for data of real well that have been simulated by hydraulic fracturing techniques. The stimulation method by high pressure wave can be used as an independent stimulation method for low-permeability reservoirs of heavy hydrocarbons and as of additional stimulation method for reservoirs in which have already been applied another technologies such as fracturing. The simulation results of wave processing were used for real deposits forecasting.
References
1. Dyblenko V.P., Volnovye metody vozdeystviya na neftyanye plasty s trudnoizvlekaemymi zapasami.
Obzor i klassifikatsiya (Wave methods of influence on oil layers with hard-to-recover reserves. Review and
classification), Moscow: Publ. of OAO “VNIIOENG”, 2008, 80 p.
2. Duvanov A.M. et al., Metody intensifikatsii pritokov v neftyanykh i gazovykh skvazhinakh s pomoshch'yu energii vzryva i goreniya vzryvchatykh veshchestv (Stimulation methods in oil and gas wells using the energy
of the explosion and burning of explosives), Moscow: Publ. of VIEMS, 1990, pp. 6 - 25.
3. Smirnov N.N., Nikitin V.F., Maximenko A. et al., Instability and mixing flux in frontal displacement of viscous
fluids from porous media, Physics of Fluids, 2005, V. 17, pp. 84-102.
4. Pestrikov A.V., Basharov A.R., Kravchenko M.N., Vestnik Udmurtskogo universiteta, 2009, no. 4, pp. 107-117.
5. Vol'pin S.G., Dieva N.N., Kravchenko M.N., Proceedings of OAO “VNIIneft'”, 2010, V. 143, pp. 78 – 85.
6. Smirnov N., Dushin V., Nikitin V., Philippov Y., Two phase flows in porous media under microgravity conditions,
Microgravity Science and Tecnology, 2008, September, V. 20, N3-4, pp. 155-160.
7. Savchenko A.V., Proceedings of FTPRPI, 2006, no. 3, pp. 63 – 75.
8. Bourdet D. et al., A new set of type curves simplifies well test analysis, World Oil, 1983, May, pp. 95–106.


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