METHOD FOR DETERMINING WATER SATURATION AND FRACTION OF SAND BED WITH USE OF TOOL FOR FORMING IMAGE OF SPECIFIC RESISTANCE IN DRILL WELL, TOOL FOR TRANSVERSE INDUCTION LOGGING SERVICES AND TENSOR WATER SATURATION MODEL

摘要

FIELD: induction logging services engineering. ^ SUBSTANCE: in layered bed, including oil-carrying bed, which may contain dispersed shale, full porosity of bed is determined, including fractional volume of shale and its specific resistance. Tensor model determines volume of layered shale and conductivity of layered sand bed from vertical and horizontal conductivities, derived from multi-component data of induction logging services. By method of Thomas-Stieber-Juhasz, volume of dispersed shale is determined, as well as full and effective porosity of layered fraction of sand. Exclusion of conductivity of layered shale sand and porosity effects simplifies problem of layered shale sand, to which Waxman-Smits equation is applicable. ^ EFFECT: higher precision. ^ 2 cl, 6 dwg