15 November 2015, Lagos – Kosmos Energy has announced that the Marsouin-1 exploration well, located in the northern part of Block C-8 offshore Mauritania, has made a “significant, play-extending gas discovery”.
The company’s second major discovery of 2015, Marsouin-1 encountered around 230 feet of net gas pay in upper and lower Cenomanian intervals, comprised of “excellent” quality reservoir sands. Situated approximately 37 miles north of the basin-opening Tortue-1 gas discovery, renamed Ahmeyim, Marsouin-1 was drilled in around 7,874 feet of water.
Andrew G. Inglis, chairman and chief executive officer of Kosmos, commented in a company statement: “Marsouin-1 is our second major discovery of 2015, extending our 100 percent success rate in the outboard Cretaceous petroleum system offshore Mauritania and Senegal.
Well-to-seismic calibration has significantly de-risked the discovered resource base, as well as future prospects in the basin.
Importantly, the well results have validated our charge model and given us growing confidence in our ability to predict the oil and gas potential of this emerging, large-scale petroleum system.
We have a disciplined exploration and appraisal program planned to further unlock the basin.” The Atwood Achiever (UDW drillship) will now proceed to the Ahmeyim-2 location in the southern part of Mauritania’s Block C-8, where it will drill the top-hole section of the well.
The drillship is then expected to sail to Senegal where it will spud Guembeul-1, the first in a series of wells to delineate the Greater Tortue area, before year-end. Kosmos has a 60 percent working interest in Block C-8.