Double-weave 3D seismic acquisition — Part 2: Seismic modeling and subsurface fold analyses

Abstract

The compatibility of 3D double-weave acquisition designs with sparse Fourier reconstruction algorithms was examined using simple modeled seismic data. Zigzag and orthogonal double-weave acquisitions and random acquisition all had successful 5D sparse Fourier interpolation results. However, the simplicity and regularity of double-weave acquisition made it a more attractive alternative to random acquisition. The subsurface fold analysis of double-weave acquisition reveals nonuniform distribution of midpoint sampling in comparison with random and traditional orthogonal acquisition layouts. This can be alleviated by either using larger bin sizes or introducing random shifts to the shot-receiver lines of double-weave acquisition layouts. Zigzag double-weave acquisition reveals a more uniform offset-azimuth distribution compared with orthogonal double-weave, random, and traditional orthogonal acquisitions.