Borehole seismic defines reservoirs at point of extraction

James Andersen US Seismic Systems Inc. Los Angeles, Calif. Bill Bartling SR2020 Inc. Brea, Calif. H. Roice Nelson, Jr. Dynamic Measurement LLC Barker, Tex. Seismic characterization can be costly. In standard surface acquisition, data are collected well beyond reservoir boundaries. These results are used to map reservoir geometry but often have little effect on individual well performance. Borehole seismic, also known as vertical seismic profiling (VSP), can be a faster, more economic process that can incrementally achieve an image of the subsurface by comingling surveys from individual wellbores. Incremental borehole seismic acquisition, processing, and interpretation are significantly le...

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