Methodical questions for determining character of uncertain fluid saturation in thin-layer sand and clay

Abstract

The new method of research on the nature of gas and water saturation of reservoir rocks in wells where
according to industrial, geophysical and geological observations while drilling and geological and technological research identified the depth interval of uncertain fluid saturation was proposed. Methodological techniques definitions of absolute permeability, open porosity, effective porosity, permeability phase, coefficient of gas saturation and water saturation limit value at which the phase permeability is absent in sludge samples were done. The method of research on the example wells drilled in the Outer zone of the Carpathian foredeep were described. The results of filtration-capacitive properties of reservoir rocks in sludge samples selected from the depth interval of occurrence of thin-layer sand and clay Neogene strata studies are presented. The described technique offers great promise in substantiating fluid saturation of reservoir rocks in cases when methods of well logging did not conclusively assess the nature of their saturation.