METHOD AND DEVICE FOR DETERMINING DISSOLUTION DEGREE OF KARST RESERVOIR

摘要

The present invention relates to the technical field of well logging interpretation. The present invention provides a method for determining the karst development degree of a reservoir, and pertains to the technical field of well logging interpretation, comprising: extracting vertical denudation pore characteristic and horizontal denudation pore characteristic from electrical imaging logging image data of a undetermined reservoir, and counting characteristic parameters of well logging; determining karst belts of the undetermined reservoir and classifying the karst development degree according to the vertical denudation pore characteristic, the horizontal denudation pore characteristic and the characteristic parameters of well logging; and determining the effective reservoir development degree of the undetermined reservoir according to the karst belts and the result of the classified karst development degree. By means of classifying the karst development degree of the undetermined reservoir based on the vertical denudation pore characteristic, the horizontal denudation pore characteristic and the characteristic parameters of well logging extracted from the electrical imaging logging image data, we can quickly and visually identify karst belts in a reservoir and classify the karst development degree. And the discrimination result is consistent with that of cores, which provides important technical supports for exploration and development of an oil-gas field.