Determining porosity distribution in fractured basement rock of White Tiger oilfield by logging data

Abstract

Commercial oil accumulation discovered in basement rocks of White Tiger oilfield opened a new exploration challenge for geologists and geophysics as well; simultaneously, it demonstrated the necessity to study this object more detail. A lot of results concerning research in basement rocks and mechanism of pore space formation were presented in several conferences or/and published in professional journals. Almost problems were clarified by researchers; however, for a comprehensive evaluation up to date the new data in which authors would like to focus on this paper, is determining the distribution of porosity in depth by logging data with supports of BASROC software version 3.0. When comparing the results of re-interpretation with additional new measurements with data summarizing 2006 show out that in basement rock the porosity decreases with depth; at zone V the porosity decreases to the value much lower than previous research results.