UK-based upstream oil and gas explorer Afren has discovered light oil at the Ogo-1 well, offshore Nigeria.

The well, located on the OPL 310 licence, was drilled to a total depth of 10,518ft and has encountered a gross hydrocarbon section of 524ft, with 216ft of net stacked pay.

The well will be further drilled to a total depth of 11,800ft to target high potential zones. Meanwhile, Afren is evaluating the well using wireline log analysis.

The Ogo-1 discovery, testing a four-way dip-closed structure in the Turonian, Cenomanian, and Albian sandstone reservoirs, confirms the extension of the same Cretaceous sandstones that have yielded other major discoveries along the West African Transform Margin.

Following the completion of drilling operations at Ogo-1, the partners intend to drill a planned side-track, Ogo-1 ST, which will test a new play of stratigraphically trapped sediments that pinch-out onto the basement high targeting 124 mmboe of gross P50 prospective resources.

Afren will hold a participating interest of 22.86% on the block, while Optimum and Lekoil will hold 60% and 17.14%, respectively.