Crosshole geotomography in a partially depleted reservoir. Final report

摘要

Specific project objectives are to: characterize downhole seismic sources; show the applicability of crosswell tomography as a tool for reservoir characterization in depleted reservoirs; use crosswell methodology to make attenuation estimates; use crosswell methods for lithology prediction and fluid detection; and combine crosswell methods with VSP and high-resolution 3-D surface seismic methods to characterize lithology. Major recent accomplishments include: production of a P-wave velocity tomogram which successfully imaged a 20 ft thick sandstone in a shallow clastic oil field; development and implementation of software for all stages of tomographic reconstruction; attenuation study in a shallow clastic reservoir; and Vp/Vs analysis in a carbonate reservoir.