LONDON -- A 3D seismic survey and ocean bottom cable (OBC) survey have been acquired over the Mariner and East Mariner discoveries and the surrounding blocks in the UK North Sea, according to Nautical Petroleum.
The seismic surveys are designed to better define the distribution of the shallow Heimdal Sandstone, the company says. The reservoir has been penetrated by 16 wells and has flowed up to 1,840 b/d of oil on drill stem test.
PGS acquired 115 sq km (44 sq mi) of full coverage 3D seismic with the survey extending over blocks 9/11a (Mariner) and 9/11b + 9/12c (Mariner East), and partly into block 9/11c (Nautical operated). The survey was completed on June 29.
An OBC survey was completed by Western Geco on Aug. 12, 2008. A 12 x 6 km (7 x 4 mi) cable layout was deployed on the sea bed and 630 km (391 mi) sail lines acquired.
The data is currently being processed and results are expected toward the end of the year, the company says.