Отправлено: 19.04.10 01:50. Заголовок: Investigation into the change of the porosity parameter during transition from laboratory to reservo

Investigation into the change of the porosity parameter during transition from laboratory to reservoir conditions

R. A. Khamidullin1 , G. A. Kalmykov1 , D. V. Korost1 and D. A. Astashkin2

(1) Department of Geology and Geochemistry of Fossil Fuels, Faculty of Geology, Moscow State University, Moscow, 119991, Russia
(2) All-Russia Research Institute of Geology and Petroleum (VNIGNI), Moscow, 105819, Russia

Received: 17 November 2008 Published online: 28 June 2009

Abstract The purpose of the investigation is to reveal the dependences of P p = f(C p) on reservoir conditions and the lithological composition of rocks. The samples were studied using a set of lithological-petrographic investigations. To obtain the dependences on thermobaric conditions, 90 samples of different porosities (C p) of 15, 20, and 25% were collected. As a result, the general pattern of the change in the rock resistivity during the transition from atmospheric conditions of measuring to reservoir conditions was established. Dependences of porosity parameter P p on porosity coefficient C p were obtained for three values of formation water salinity and three reservoir conditions. The measurement errors of the porosity parameter P p were calculated using dependences obtained under atmospheric conditions.
Key words porosity coefficient - porosity parameter - dependence - reservoir conditions - formation water salinity - specific electric resistivity

Original Russian Text © R.A. Khamidullin, G.A. Kalmykov, D.V. Korost, D.A. Astashkin, 2009, published in Vestnik Moskovskogo Universiteta. Geologiya, 2009, No. 3, pp. 55–58.
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