CGG completes three-year Marcellus shale program


CGG has extended its data library of shale acreage in the US by completing a vast three-year multi-client 3D land seismic program targeting the Marcellus shale fairway.

CGG conducted the 1,566-square-mile program in six phases in Lycoming, Tioga, Clinton, Centre and Clearfield counties in central Pennsylvania. CGG says the survey will be the largest combined onshore seismic survey ever acquired in the continental US.

As the terrain in central Pennsylvania gradually became more rugged and mountainous, CGG switched from deploying the Sercel 428XL cable acquisition system to using the Sercel UNITE wireless acquisition system to acquire the complex seismic program.

By the end of 2014, all six phases will be merged together to offer a seamless data set processed with interpolation and migration techniques over the entire program. Currently, this data set is available over the Lycoming II and Brookside portions of the survey.

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