Patent ID: 9702996
Date: 2017-07-11
CPC Classifications: G01V

Claim:
1. A method of modeling a subsurface region, the method comprising: obtaining a seismic image of a seismic attribute value as a function of position in a subsurface region; performing full-volume horizon picking in the seismic image and deriving from the seismic image an instantaneous isochron attribute (IIA) value as a function of position; identifying one or more geobodies within the seismic image based at least in part on the IIA values by applying IIA value filtering to isolate intervals of rapid or slow deposition in the seismic image; determining a reservoir-non-reservoir indicator attribute value as a function of position based on the seismic image; applying reservoir-non-reservoir indicator value filtering to isolate subintervals of presumed reservoirs or non-reservoirs in said isolated intervals, wherein the presumed reservoirs have relatively high porosity and poor consolidation and the presumed non-reservoirs have relatively low porosity and good consolidation; determining a pay indicator attribute value as a function of position based on the seismic image; and applying pay indicator value filtering to isolate presumed pay zones in said isolated subintervals; and representing the one or more geobodies in a geocellular model.