Kosmos Energy discovered gas at the Tortue West prospect in Block C-8 offshore Mauritania. Exploration well Tortue-1 received intermediate logging to a depth of 4630 m and intersected 107 m of net hydrocarbon pay. A single gas pool was encountered in the lower Cenomanian layer, which comprises three high-quality multi-darcy reservoirs. The well was drilled in 2700 m of water. Kosmos (60%) is the operator with partners Chevron (30%) and Société Mauritanienne des Hydrocarbures et de Patrimoine Minier (10%).