TGS-NOPEC Offers Seismic Data for Sierra Leone Bidding Round

TGS-NOPEC Geophysical Company is offering multi-client 2D seismic data covering a 36,000 square-kilometer offshore area available for lease in Sierra Leone.

In a communication dated Feb. 28, 2003, the Government of Sierra Leone announced that the first International Petroleum Bid Round would be delayed by two months to allow exploration companies more time to acquire and interpret data before submitting their bids. The new closing date has been set for 12:00 noon on May 30th, 2003.

TGS-NOPEC has 5,784 kilometers of non-exclusive seismic 2D-data available within the lease area. Processing on this survey has been completed, and it is ready for immediate delivery to interested clients. There are two wells offshore Sierra Leone, with the logs and reports available though A2D Technologies, a TGS-NOPEC company.

An interpretation study of this seismic data was conducted in 2001 and 2002. Several play types have been identified, including rotated fault blocks, stratigraphic onlap pinchouts, truncation traps, strike slip associated traps and deepwater fans. The late Cretaceous interval, expanding from the shelf to more than 2000 meters into the basin, most likely contains mature Cenomanian to Turonian source beds. Cenomanian to Turonian shales are established type II source rock throughout offshore West Africa.