SYSTEM AND METHOD FOR ANALYZING GEOLOGIC FEATURES USING SEISMIC DATA

摘要

A system and method for analyzing geologic features including fluid estimation and lithology discrimination may include the steps of identifying areas of interest on a seismic horizon, computing statistical data ranges for the seismic amplitudes within the areas of interest, and analyzing the geologic features based on the amplitude variation with offset (AVO) or angle (AVA) curves including the statistical data ranges.

主权项

1. A computer-implemented method for analyzing geologic features of interest using pre-stack seismic data, the method including:
a) receiving the pre-stack seismic data representative of a subsurface volume of interest and one or more seismic horizons selected within the pre-stack seismic dataset, wherein the pre-stack seismic data includes an offset or angle axis; b) identifying one or more areas of interest on the one or more seismic horizons; c) computing statistical data ranges for seismic amplitudes inside each of the one or more areas of interest as a function of the offset or angle axis; d) generating plots of the statistical data ranges for seismic amplitudes as a function of the offset or angle axis; and e) determining geologic features of the subsurface of the one or more areas of interest based on the plots of the statistical data ranges for seismic amplitudes thereby to conduct fluid estimation, lithology discrimination and/or analysis, structural conformance, well-planning and/or reservoir management.