Kosmos Energy Ltd. (NYSE: KOS) said on Dec. 12 that it would plug its Lamantin-1 exploration well offshore Mauritania after it failed to find significant amount of oil and gas.

Lamantin-1 was drilled to a total depth of 5,150 m (16,896 ft) and was designed to evaluate a untested lower Campanian base of slope fan supplied from the Nouakchott River system, trapped in a combination structural-stratigraphic feature, and charged from underlying, oil-prone Cenomanian/Turonian and Albian source rocks.

Evaluation of logs and samples collected during drilling and wireline operations suggests the Campanian reservoir objective was water-bearing with some residual hydrocarbons, Kosmos said.

“We are still in the early stages of exploring this newly emerging basin and our forward drilling program remains unchanged given the independent nature of the prospects,” Andrew Inglis, CEO, said in a statement.