Practical algorithms for crosswell seismic imaging

Jerry M. Harris

doi:10.1117/12.164842

1 December 1993 Practical algorithms for crosswell seismic imaging

Jerry M. Harris

Proceedings Volume 2033, Mathematical Methods in Geophysical Imaging; (1993) https://doi.org/10.1117/12.164842
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

The goal of high resolution Crosswell Seismic Profiling is to image weak and small scale heterogeneities imbedded in a background of strong, large scale variations. This model is appropriate for many geological environments and reservoir delineation and monitoring applications. One `practical' approach is to separate the imaging problem into transmission traveltime tomography and reflection segments. The travel times are used first to image the large scale velocity variations that refract the waves. The full wavefield is then pre-processed to enhance primary reflections and mapped or migrated. This segmented approach is verified with tests on field data recorded in a carbonate oil reservoir. Traveltime tomography is found to resolve velocity features of the order of 1 - 2 wavelengths. Structural features as small as 1/2 wavelength are imaged with reflection methods.

Citation Download Citation

Jerry M. Harris "Practical algorithms for crosswell seismic imaging", Proc. SPIE 2033, Mathematical Methods in Geophysical Imaging, (1 December 1993); https://doi.org/10.1117/12.164842

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