Cause of low electrical resistance in the low-resistance reservoirs
Category: 15-4UDC 550.83+552.5+553.98
I.A. Melnik
Siberian Research Institute of Geology, Geophysics and Mineral Resources,
Tomsk Branch, Tomsk, Russia
Abstract. The equation of the electrical conductivity is defined in the low-resistance reservoirs on the basis of the three-component physical and geochemical model of electrical conductivity in sandstone (the electrolyte solution, clayey EDL and superficial highly electro-conductive layer, formed as a result of secondary geochemical processes). It is shown that change in the electrical conductivity of the surface layer due to charges of transformed minerals, may be the main defining component of total electrical conductivity of rocks.
Keywords: low-resistivity reservoir, logging, electrical resistivity, secondary geochemical transformations of the rocks.
References
Chikishev A.Yu., Chikishev Yu.A., Kovaleva N.P., Reznichenko V.A., Zhukovskaya E.A., Maksimov V.P., and Golyashchenko A.V., The reason for low-resistivity reservoirs in Jurassic deposits of Kaimysov vault (discussion), Oil Industry, 2006a, no 8, pp. 42-45.
Chikishev Yu.A., Reznichenko V.A., Shishkin R.A., and Doroginitskaya L.M., The problem of allocation of productive formations in reservoirs with a complex structure, International Academic Conference "State, trends and problems of development of oil potential of the Western Siberia" 11-13 October 2006, Tyumen: FGUP ZapSibNIIGG, 2006b.
Dobrynin V.M., Vendelshtein B.Y., and Kozhevnikov D.A., Petrofizika (fizika gornykh porod) (Petrophysics (physics of rocks)) Proc. manual for high schools, Moscow: Neft’ i gaz, 2004.
Ezhova A.V., Methods of assessing the oil saturation of low-resistance reservoirs in Jurassic deposits of southeastern West Siberian Plate, Proceedings of TPU, 2006, vol. 309, no 6, pp. 23-26.
Gudok N.S., Bogdanovich N.N., and Martynov V.G., Opredelenie fizicheskikh svoistv neftevodosoderzhashchikh porod (The physical properties of oil-containing rocks), Proc. manual for high schools, Moscow: Nedra-Biznestsentr, 2007.
Kobranova V.N., Petrofizika (Petrophysics), Moscow: Nedra, 1986.
Kontorovich V.A., Tektonika i neftegazonosnost’ mezozoisko-kainozoiskikh otlozhenii yugo-vostochnykh raionov Zapadnoi Sibiri (Tectonics and petroleum potential of the Mesozoic-Cenozoic deposits in southeastern regions of West Siberia), Novosibirsk: SO RAN, 2002.
Lebedev B.A., Geokhimiya epigeneticheskikh processov v osadochnykh basseinakh (Geochemistry of epigenetic processes in sedimentary basins), Leningrad: Nedra, 1992.
Mel’nik I.A., Determination of oil saturation coefficient in epigenetically transformed reservoirs on the basis of GIS data, Automation, telecommunications and mechanization in oil industry, 2013, no 5, pp. 33-40.
Osipov V.I., Sokolov V.N., and Rumyantseva N.A., Mikrostruktura glinistykh porod (Microstructure of clayey rocks), Moscow: Nedra, 1989.
Semenov V.V., Mel’nik I.A., Pitkevich V.T., Sokova K.I., and Solonin A.M., The study of low-resistance collectors using the data of core material, Geofizika (Geophysics), 2006, no. 2, pp. 42-47.
Sokolov B.A., Ablya E.A., Flyuidodinamicheskaya model’ neftegazoobrazovaniya (Fluid-dynamical model of oil and gas formation), Moscow: GEOS, 1999.
Shaldybin M.V., Geochemical criteria for assessing the influence of the induced epigenesis processes on filtration and capacity properties of reservoir rocks (on an example of oil deposits in the Tomsk region): Disser. Cand. Sci. (geol.-mineral.), Tomsk: TPU, 2005.
Shishkin R.A., Reznichenko V.A., and Doroginitskaya L.M., Types of productive reservoirs revealed on the basis of well logging on an example of the Olen’e deposit, Oil Industry, 2006, no. 8, pp. 38-41.
Vendelshtein BY, Zoloeva GM, Tsarev NV, Dakhnov VN, Rezvanov RA, Farmanova NV, Latysheva M.G., Dyakonova T.F., and Schwartzman M.D., Geofizicheskie metody izucheniya podschetnykh parametrov pri opredelinii zapasov nefti i gaza (Geophysical methods of study the parameters in determining the oil and gas reserves), Moscow: Nedra, 1985.
Verezhnikov V.N., Izbrannye glavy kolloidnoi khimii (Selected chapters of colloid chemistry), Voronezh: Publishing house of the Voronezh State University, 2011.
Yavorskii B.M. and Detlaf A.A., Spravochnik po fizike (Handbook of physics), Moscow: Nauka, 1979.
Zaripov O.G. and Sonich V.P., Influence of lithology of reservoir rocks on the electrical resistance of layers, Geology and exploration, 2001, no. 9, pp. 18-21.