METHOD FOR DETERMINING GAS AND OIL SATURATION COEFFICIENT FOR GEOPHYSICAL WELL LOGGING COMPLEX BASED ON PULSE NEUTRON WELL LOGGING METHODS

摘要

FIELD: oil and gas industry.;SUBSTANCE: measurements are made by means of a pulsed neutron logging method (PNL) and calculation of macroscopic absorption section of mine rock thermal neutrons is performed; macrocomponent rock composition is determined for geophysical well logging complex (GWL), including porosity; with that, for calculation of macroscopic absorption section of thermal neutrons with formation water and hydrocarbons there used are their elemental composition and density, and calculation of hydrocarbon saturation itself is performed as per certain relationship; with that, for calculation of macroscopic absorption sections of thermal neutrons with macrocomponents forming solid phase of rocks there additionally prepared is a collection of core sample from test wells, on which there performed are measurements of mineral, elemental composition of samples and losses of sample weight at heating; mineral component model of rock is formed and macroscopic absorption sections of thermal neutrons are calculated for each macrocomponent forming a solid rock phase.;EFFECT: improving accuracy of determining hydrocarbon content.