With the addition of 10 700 sq. km of 3D MultiClient data to its data library coverage of the Niger Delta, PGS announced the launch of a major reprocessing project, which is expected to be ‘the cornerstone of a new regional-scale MegaSurveyPlus dataset for Nigeria’ by end of this year.
The Nigeria MegaSurveyPlus covers two main structural provinces directly linked to the gravity-driven movement of the Akata Shale Formation. The eastern part of the dataset is in the transitional detachment fold zone and contains subtle faulting along with low wavelength folding of Eocene to Quaternary stratigraphy. The western part, situated in the outer fold and thrust belt, is dominated by closely spaced thrust faults.
Modern processing and imaging techniques, including optimized denoising algorithms and a full deghosting sequence, will improve data bandwidth and signal-to-noise ratio, and the application of a multiple attenuation process will enable enhanced image integrity by eliminating complex multiples
…explains Joshua May, Business Development Manager for Africa at PGS.
PGS further said that the addition of 10 700 sq. km of MegaSurveyPlus reprocessed 3D will give an expanded and consistent regional geological perspective. The resulting full-stack PSTM data can be used for regional interpretation, to enable a greater understanding of plays and migration pathways across open acreage offshore Nigeria. Pre-stack PSTM products allow a thorough AVO analysis to be undertaken.
