Data Reconstruction on Land Seismic Data using Paired Bunched Geophone Groups
W. Gamal Eldin, D. Yanchak, Z. Yan and M.A. Schonewille
Event name: 78th EAGE Conference and Exhibition 2016
Session: Seismic Interpolation and Regularization
Publication date: 31 May 2016
Info: Extended abstract, PDF ( 5.74Mb )
Price: € 20
During recent acquisition tests in Egypt, Khalda Petroleum Company recorded a 2D test line on which paired bunched geophone groups were deployed. The distance between the geophone groups within the pair was 5 m. The station interval (distance between two pairs) was 50 m and the shot interval was 50 m. It was envisaged that using these pairs could help with noise attenuation and interpolation, and could allow for larger station intervals. Ultimately, this may be translated to 3D acquisitions with larger distances between receiver lines, which could reduce acquisition costs. Extensive processing tests showed the following: 1) Interpolation after noise attenuation gave better results than before noise attenuation; 2) The best noise attenuation results were obtained using a workflow that includes a method that uses the pairs of geophone groups to estimate the ground roll; 3) The best interpolation results were obtained using 3D time-domain Radon interpolation (TDRI); 4) Interpolation using TDRI does not benefit from having pairs of geophone groups, although the more conventional matching pursuit Fourier interpolation did benefit from having pairs; and 5) Decimation leads to a gradual reduction in data quality which will need to be balanced against cost.