Efficiency of POCS and MWNI in interpolating structurally complex seismic data

Sharma, Sundeep (Devon Energy) | Shukla, Khemraj (Oklahoma State University)


Onshore seismic surveys have irregular data coverage where data cannot be acquired due to surface obstacles and permitting issues. The geologic and structural complexity in such areas with missing data likely has spatial variability that an idealized interpolation method could capture. In this paper, we test the efficacy of Projection onto Convex Sets (POCS) with linear and exponential thresholding schemes and Minimum Weighted Norm Interpolation (MWNI) methods in reconstructing data within a reservoir section that contains significant structural deformation. We check the efficacy of both methods by testing the reconstruction on a 2D seismic section across the reservoir interval. Although both methods successfully reconstruct traces close to the original section where dips are gentle, MWNI proves to be better in areas with steeper bed dips.The comparison of f - k spectrum, the difference plot between the reconstructed and original datasets, and the calculated quality factors echo the superiority of MWNI in reconstructing data in areas with varying geologic complexity.

Presentation Date: Tuesday, October 16, 2018

Start Time: 9:20:00 AM

Location: Poster Station 9

Presentation Type: Poster