PARIS – CGG will begin a four-month multi-client airborne gravity and magnetic survey offshore South Africa later this month. The Petroleum Agency of South Africa has authorized the program that will extend across two blocks, totaling about 78,000 line km (48,466 mi).
The survey areas are located offshore Cape Agulhas (West Bredasdorp area) and offshore Durban (Eastern Margin area). The company is anticipated to use specialized geophysical survey aircraft. The project has received prefunding from the oil industry, the company said; survey data and interpretation products will be available for licensing in mid-2016.
The survey will provide partial coverage of the largely underexplored Western Bredasdorp, Durban, and Zululand basins, and the data will assist with mapping crystalline basement and magnetic and density anomalies within the sedimentary section. The airborne survey will allow data collection through the “transition zone” from the marine environment to the near-shore.
Deliverables will include a full geophysical interpretation report, including definition of basement lithology and structure, mapping of sediment fairways and depositional-centers and any intrusives or salt which may be present in the sedimentary section. The final results will be presented in ArcGIS format for assimilation into the clients’ own seismic, geological and well control databases.