Aspects of the Log Data Analysis in the Thinly Laminated Terrigeneous Deposits

Productive terrigenous deposits are essential for the development of Russia oil and gas industry. Thinly laminated sediments occupy a special place among the different types of terrigenous reservoirs. Study of thinly laminated anisotropic sections is important at the moment as this reservoir type is widespread both in Russia and abroad. Anisotropic reservoir represents as a thinly interbedded reservoir and non-reservoir layers. When investigating of this section tape there are a number of difficulties relating first of all with net pay thickness determining. Secondly, there are difficulties associated with low vertical resolution of well logging. Thus properties of this complex reservoir type complex must be evaluated using a special interpretation technique different from the technique for "traditional" terrigenous reservoirs. The report suggests various ways for parameters estimation of the thinly laminated reservoirs. The possibilities of the modern well logging tools using (such as 3D-induction tool, FMI) for the reservoir properties estimation are shown on the example of the Western Siberia thinly laminated terrigenous deposits