SEISMIC ATTRIBUTES IN GEOTHERMAL FIELDS
Conference Proceedings: SEISMIC ATTRIBUTES IN GEOTHERMAL FIELDS
AbstractLarge velocity contrasts are regularly encountered in geothermal fields due to poorly consolidated and hydro-thermally altered rocks. The appropriate processing of seismic data is therefore crucial to delineate the geological structure. To assess the benefits of surface seismic surveys in such settings, we applied different migration procedures to image a synthetic reservoir model and seismic data from the Coso Geothermal Field. We have shown that the two-dimensional migration of synthetic seismic data from a typical reservoir model resolves the geological structure very well despite the extremely strong and sharp velocity contrasts. In addition, small fracture zones can be inferred from the inspection of the common image gathers. After carefully preprocessing seismic data the 2-D and 2.5-D pre-stack depth migration of line 109 in the Coso Geothermal Field shows a well defined reflector at about 16’000 ft depth. Compared to the 2-D pre-stack migrated image the 2.5-D pre-stack migrated image resolves the deep reflector better, which indicates that the subsurface
- Kaelin, B.; Fliedner, M.M.; Beve and D.
- PROCEEDINGS, Thirty-First Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 30-February 1, 2006, 1/1/2006
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Kaelin, B.; Fliedner, M.M.; Beve, D.. 1/1/2006. SEISMIC ATTRIBUTES IN GEOTHERMAL FIELDS. Proceedings of (!) ; (!) : PROCEEDINGS, Thirty-First Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 30-February 1, 2006.