Petroleum Africa
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Friday, April 12, 2013
Operator Anadarko South Africa (Pty) Ltd., in partnership with PetroSA, is in the midst of the first exploration period over frontier Block 5/6 and Block 7 in South Africa’s Orange Basin. The company contracted Fugro to conduct a survey within these blocks that involved the acquisition of multi-beam echo sounder (MBES) data from the MV Fugro Gauss, together with onboard seep mapping interpretation. This survey is part of a greater Seafloor Geochemical Exploration survey designed by Anadarko and partners.
The company successfully completed around 56,000 sq km of the MBES survey whch provided quality bathymetry and backscatter MBES data for the identification of potential, natural hydrocarbon seepage at the seabed. During the acquisition, experienced Fugro geoscientists onboard the vessel performed mapping of potential seeps, interpretation of the surficial sedimentary geology, structural geology and shallow fluid migration systems, and reporting of the acquired MBES data.
As Helle Els, commercial manager of Fugro Survey Africa, explains: “Seep hunting requires both MBES bathymetry and MBES backscatter data to be collected and processed in real-time during the survey. Our geologists onboard evaluate the data to determine potential seep targets and weight them for a later geochemical coring survey. All technologies and methods used are in accordance with good survey practice and our Fugro team onboard are experts experienced in bathymetric surveys to IHO standards in both data acquisition and processing.â€
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