Elastic finite-difference modeling for testing acquisition and processing methods

Summary We have modified research-oriented 2D finite-difference code to allow convenient production of realistic model shot records on desktop computers. The modeled data are shot records acquired at the surface of simulated 2D geological models which contain two main components: a broad background layered cross-section, and a number of anomalous zones representing hydrocarbon targets or nearsurf ace weathering pockets. The resulting shot records must be processed to suppress noise and to find surface consistent statics in order to enhance signal enough to image the subsurface structure. The models can be used to test the efficacy of PP and PS processing, and to investigate the effects of trace density, shot intervals, and missed shots on the accuracy and fidelity of migrated images of reservoir targets.