METHOD DETERMINING OIL, GAS AND WATER SATURATION OF COLLECTOR Russian patent published in 2000 - IPC

FIELD: geophysics, specifically, determination of collector properties of oil-, gas- and water-saturated productive pools and identification of type of saturating fluids in porous medium. SUBSTANCE: method determining oil, gas and water saturation of collector consists in determination of specific resistance and spontaneous polarization by electric logging diagram, in determination of normalized specific resistance and spontaneous polarization for all values by depth as relation of their current values to maximum ones, in plotting of diagram of normalized values of specific resistance and spontaneous polarization of stratigraphically interesting intervals on phase plane. Oil, gas and water saturation of intervals of collector is evaluated by region on phase plane where they are located. Oil and gas region in interval of normalized values is characterized by specific resistance 0.25-1.0 and spontaneous polarization 0-0.3; water and oil region in interval of normalized values is characterized by specific resistance 0.25-1.0 and spontaneous polarization 0.3-1.0; water region and absence of collectors in interval of normalized values is characterized by specific resistance 0-0.25 and spontaneous polarization 0-1.0. EFFECT: increased degree of authenticity of determination of collector properties of rock. 2 dwg, 1 tbl