PETROLEUM DIRECTORY: WesternGeco completes first Q-marine survey in Danish sector of North Sea

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Petroleum News

WesternGeco said June 8 that it has completed acquisition of a Q-Marine seismic survey for the Danish Oil and Natural Gas Co. over the Siri field in the North Sea. The 128-square-kilometer, high-resolution Q survey was acquired in May over a 1996 heritage survey and will include 4-D processing of the vintage data.

“WesternGeco Q-Technology was selected for this monitor survey because of the high activity level in the area where the increased spatial Q-marine sampling could enhance noise reduction,” said Jesper Wissendorf Hansen, operations geophysicist with Danish Oil and Natural Gas. “Furthermore, the steerable streamers added a safety element to the work around the installations in the area, in addition to the advantage of steering the feather.”

The survey was conducted in two phases, WesternGeco said. First, the Q-Technology vessel Western Pride, towing six 3,200-meter cables with 100-meter separation, repeated the 1996 survey. An interleaved pass then increased data density and will be used for enhanced imaging.

“The high repeatability and superior resolution of the Q survey will enable improved knowledge of the Siri field,” said Roar Bekker, manager, WesternGeco Europe.