Rapid interpretation, prediction and validation of fluid and lithology combining prestack seismic data with poststack nterpretation

Abstract

Prestack seismic data provides additional information over poststack seismic data for determining fluid content and reservoir quality. Rapid access to prestack seismic data permits the interpreter to understand whether seismic amplitude changes are related to fluid effects or to seismic processing artifacts such as multiples or poor stacking. Workflows that use prestack data have long been the domain of specialists. Extending prestack data access to complete workflows for AVO analysis and fluid substitution present a challenge for the average interpreter. A `wizard' interface has been designed that allows specialists to provide a template for more effective resolution of these specialist processes by the layman within any asset team. Collaborative workflow design and testing with three major oil companies has demonstrated the potential for interpreters to fully utilize prestack seismic data within the conventional poststack seismic interpretation workflow.