Gas saturation prediction method and device

Abstract

The invention provides a gas saturation prediction method and device. The method comprises steps of through seismic channel analysis, carrying out screening to obtain seismic attributes of at least one gas saturation sensitivity; through rock physical analysis, carrying out screening to obtain elastic parameters of at least one gas saturation sensitivity; and based on the construction relation between a gas saturation sensitivity model, the elastic parameters and the seismic attributes, by use of the seismic attributes of at least one gas saturation sensitivity, and the elastic parameters of at least one gas saturation sensitivity, carrying out gas saturation prediction on a to-be-predicted reservoir. According to the invention, accuracy of the gas saturation prediction can be improved.

Description

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AI Technical Summary

Benefits of technology

This technology uses data from different sources such as geology, petrophysics, hydrocarbon exploration, etc., along with factors like stress waves that affects how well these materials behave when they break down under pressure (stress). By analyzing this dependency relationships, it becomes possible to predict accurately what type of material will be found at risk during drilling operations without relying solely upon certain physical properties like density.

Problems solved by technology

This patented technical problem addressed during drilling operations involves accurately predicting the amount of hydrocarbons contained within subterranean formations due to their complicated nature. Current techniques involve performing various types of measurements like sonde characterization, depth migration, ellipsis analysis, etc., but they often suffer from imprecision and limited applicability depending upon environmental conditions. Gas saturaence has been proposed as another way to address these challenges.

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