The invention relates to a sandstone
reservoir water layer resistivity-based stratum
data processing method, which belongs to a resistivity-based reservoir attribute identification method and is suitable for identifying underground water
layers. The method comprises the following steps: acquiring reservoir
lithology data by using
geological exploration equipment; analyzing the acquired reservoir
lithology data with analysis equipment to acquire total sandstone
porosity,
bound water saturation, stratum
water density, stratum
crude oil density, movable stratum water resistivity, stratum
bound water resistivity, mud and mud filtrate resistivity, true sandstone
water layer resistivity, stratum
fluid replacement rate and mud filtrate distribution coefficient; and finally, acquiring polluted sandstone
water layer apparent resistivity, and judging whether the sandstone reservoir is the
water layer by comparing the numerical relationship between the
apparent resistivity and true resistivity of the sandstone reservoir depth side direction and the measured resistivity. By analyzing the
pollution degree of the sandstone reservoir around a borehole, the method avoids mistakenly jetting the water layer when the
hydrocarbon reservoir is put into development and perforation, reduces inaccurate judgment for
abnormality, and reduces the development cost.