CGG has completed the Pre-Stack Time Migration (PSTM) of its 2,500-sq-km Dunquin multi-client survey acquired in Block 44 of the Porcupine Basin, west of Ireland, in 2017.
Dunquin is the latest in a series of multi-client surveys that CGG has recently been acquiring in the area, totaling 10,500 sq km of 3D and around 2,000 km of long-offset 2D broadband data. PSDM products for its 2016 Galway and Cairenn surveys were delivered last year.
A preliminary FWI test reveals geologic details of a buried volcanic island and coral reef atoll (image courtesy of CGG Multi-Client & New Ventures).
Similar to CGG’s Galway and Caireen surveys, the Dunquin data will be processed through advanced velocity modeling and depth imaging, following industry funding. Initial FWI results – as illustrated in the image below – reveal important details of the carbonate reservoir that forms the Dunquin structure.
Luc Schlumberger, EVP, Multi-Client & New Ventures, CGG, said: “Our new Dunquin data set adds to our high-quality coverage west of Ireland, shedding new light on the characteristics of known and undrilled structures. It will enhance industry understanding of potential areas of interest in this still unexplored region.”
