Effects of Seismic Reprocessing on Selected Seismic Attributes: A Case Study in the Permian Basin

FAMINI, JOEL ANTHONY T.¹, KURT J. MARFURT², AND E. CHARLOTTE SULLIVAN³ ,Allied Geophysical Laboratories, University of Houston, Houston, Texas

¹ [email protected]
² [email protected]
³ [email protected]

The Vacuum Field data is characterized by noisy reflectors in vertical sections. Evaluation of image quality of subtle laterally variable stratigraphic features is greatly enhanced by the use of multitrace attributes. The use of seismic attributes, including coherence, dip, azimuth, and energy gradients are often effective in imaging subtle and small-scale geologic features. The optimization of certain data processing steps, including ground-roll suppression, deconvolution, statics correction, and velocity analysis can have a first-order effect on the seismic attributes. At present, we have two volumes of the same Vacuum survey processed by two different companies. We are currently reprocessing the prestack shot gathers using an interpreter-driven workflow, with parameters chosen to optimize the appearance of stratigraphic features as seen on attribute extractions along horizon slices. We present our findings through images of faults, channels, and other geologic features in an effort to better understand the reservoir compartmentalization.