Abstract
There are some limitations when we apply conventional methods to analyze the massive amounts of seismic data acquired with high-density spatial sampling since processors usually obtain the properties of raw data from common shot gathers or other datasets located at certain points or along lines. We propose a novel method in this paper to observe seismic data on time slices from spatial subsets. The composition of a spatial subset and the unique character of orthogonal or oblique subsets are described and pre-stack subsets are shown by 3D visualization. In seismic data processing, spatial subsets can be used for the following aspects: (1) to check the trace distribution uniformity and regularity; (2) to observe the main features of ground-roll and linear noise; (3) to find abnormal traces from slices of datasets; and (4) to QC the results of pre-stack noise attenuation. The field data application shows that seismic data analysis in spatial subsets is an effective method that may lead to a better discrimination among various wavefields and help us obtain more information.
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Cai Xiling received a BS (1990) in the department of Geophysical Prospecting from the Petroleum University and a PhD (2008) from China University of Geosciences. She has done research on geophysical prospecting methods and seismic data processing for many years. Currently, she is working in the Research Institute, BGP.
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Cai, X., Liu, X., Li, H. et al. Seismic data analysis based on spatial subsets. Appl. Geophys. 6, 384–392 (2009). https://doi.org/10.1007/s11770-009-0042-x
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DOI: https://doi.org/10.1007/s11770-009-0042-x