Research of petrophysical rock and fluid properties, used in prediction of hydrocarbon presence
it is known that for detecting the occurrence and study the configuration of hydrocarbon traps in-situ conditions through geophysical prospecting we require to study petrophysical rock and fluid properties. Petrophysical characteristics are studied in order to determine lithology and fluid content by comparing the values of the physical parameters of velocity, density and resistivity. In this connection, the author proposed some formulas which determine velocity and density change depending on pressure and temperature of mutual transition of velocity and density. Dependence of the effective porosity on velocity, density and resistivity are determined as well.