Tapping into Seismic Imaging Advances

Reprocessing existing data with new technologies reveals more in seismic imaging for oil and gas operators around the world.

CGG and TGS describe how reprocessing existing data with new technologies reveals more in seismic imaging. (Source: CGG)

Seismic imaging and reprocessing technologies are improving and a number of operators around the world are reprocessing legacy data to identify new prospects.

Recent reprocessing initiatives include one project in the Greater Catcher Area of the U.K. Central North Sea, being carried out by TGS. Meanwhile, in April, CGG kicked off another central Gulf of Mexico multiclient reprocessing project—StagSeis Deux Reimaging—after the technical and commercial success of its Walker Ridge WAZ Reimaging program last year.

According to TGS, significant advances have been made to improve seismic reprocessing in recent years.

“Algorithms have improved to reduce the number and size of approximations in seismic images,” TGS principal advising geophysicist David Brookes told Hart Energy. For example, velocity models have advanced from tomographic to full waveform inversion (FWI).

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Anna Kachkova

Anna Kachkova is a freelance writer based in Edinburgh, Scotland.