The latest deal will take it into three countries considered to be in the second tier of west African oil and gas plays. In Ghana, Anadarko will acquire a 50% stake in the Keta block. A deep-water seismic survey was recently completed here and a shelf-edge exploration well will be drilled later this year. Devon will remain operator. Anadarko has also acquired a 50% interest in Gabon's Agali block where a deep-water 3D seismic survey is set to be shot early next year to evaluate prospective areas identified by a recent 2D campaign.