Neftyanaya Provintsiya
electronic peer-reviewed scholarly publication
Neftyanaya provintsiya No.4(24),2020

Impact of wettability recovery on electrical properties of the Lower Vendian carbonate rocks in East Siberia

A.M. Fadeev


Surface characteristics of rocks largely influences the estimates of oil saturation factor, displacement efficiency, and relative permeabilities. In in-situ systems, the wettability can change from hydrophilic to hydrophobic depending on the interaction between fluid (brine and oil) and pore surface. The paper shows the influence of extraction and the following stages of samples’ preparation for wettability recovery on electrical properties of carbonate rocks. Following exposure of samples to pressure and temperature, the pore space surface tends to be more hydrophobic, resistivity increases, and petrophysical relations between resistivity index and water saturation factor change.

    Key words:

    reservoir, wettability, porosity, water saturation, oil saturation, resistivity, formation resistivity factor, resistivity index, petrophysical equations


    Dobrynin V.M., Vendelshtein B.Yu., Kozhevnikov D.A. Petrofizika [Rock Physics]. Moscow: Nedra Publ., 1991. 368 p. (in Russian)

    Rezvanov R.A. Nekotorye mify v karotazhe [Myths in well logging]. Geofizika, 2004. Special issue. pp. 52-56 (in Russian)

    Akbar M., Petricola M., Watfa M., Badri M., Charara M., Boyd A., Cassell B., Nurmi R., Delhomme J.-R., Grace M., Kenyon W., Roestenburg J. Classic interpretation problems: evaluating carbonates. Schlumberger Oilfield Review, H. Edmundson, Ed., 1995. 7. No 1. P. 38-57.

    Sen P.N. Resistivity of partially saturated carbonate rock with microporosity //Geophysics, 1997. Vol/ 62. № 2. P.415-425.

    Anderson W.G. Effect of wettability on the electrical properties of porous media //J. Pet. Tech., Dec. 1986. P.1371-1378.

    Efimov V.A., Malshakov A.V., Romanov E.A., Mordvintsev M.A., Rogozhnev O.V. Obosnovanie koefficienta neftenasyshchennosti na osnove izucheniya kerna i dannykh geofizicheskikh issledovanii skvazhin [Justification of oil saturation factor based on core analysis and well logging data]. Neftyanoe Khozyaistvo, 2005, No. 5. pp. 41-43 (in Russian).


    A.M. Fadeev, PhD (Phys.-Math.), Expert in Petrophysics, Analytics of Core and PVT Analysis Department, Core Analysis Centre, LLC «Tyumen Petroleum Research Center»
    42, M. Gorky st., Tyumen, 625002, Russian Federation

    For citation:

    A.M. Fadeev Vlijanie vosstanovlenija smachivaemosti na jelektricheskie svojstva karbonatnyh porod nizhnevendskih otlozhenij Vostochnoj Sibiri [Impact of wettability recovery on electrical properties of the Lower Vendian carbonate rocks in East Siberia]. Neftyanaya Provintsiya, No. 4(24), 2020. pp.120-128. DOI (in Russian)

    © Non-governmental organization Volga-Kama Regional Division of the Russian Academy of Natural Science, 2015-2022 All the materials of the journal are available under the Creative Commons Attribution 4.0 License (