Offshore staff
OSLO, Norway – PGS has issued details of its Deepwater Niger Delta Depth 2023 project, comprising more than 5,000 sq km of reprocessed PSDM multiclient 3D data over offshore northwestern Nigerian.
The program involves rejuvenating the Nigeria MegaSurveyPlus and OPL 314/315/321/323 MC3D datasets. It provides coverage over three blocks made available under the Nigeria Mini Bid Round 2022: PPL-303-DO, PPL-304-DO and PPL-305-DO as well as two adjacent, unlicensed blocks to the north, OPL 321 and OPL 323.
PGS says new findings are available for two main structural provinces directly linked to the gravity-driven movement of the Akata Shale Formation. The eastern part is in the transitional detachment fold zone and contains subtle faulting, along with low wavelength folding of Eocene to Quaternary stratigraphy.
The west of the survey, located in the outer fold and thrust belt, features closely spaced thrust faults.
The Niger Delta Basin, the company added, has up to 12 km of Late Cretaceous to Quaternary-aged clastics deposited in an upward-coarsening regressive deltaic sequence. Main source rocks are Akata Formation marine shales and Lower Agbada Formation paralic shales.
Proven reservoirs comprise unconsolidated sandstones of the Agbada Formation deposited as stacked turbidite channel and fan complexes. The largest accumulations are trapped in roll-over anticlines in the hanging walls of growth faults, with further hydrocarbon potential in fault closures and subtle stratigraphic traps.
PGS also announced a new 3D seismic acquisition contract in the Mediterranean Sea, awarded by an unnamed operator. The Ramform Hyperion should mobilize for the 70-day program late this summer.
06.01.2023
