Tullow Oil, the operator of the Guyane Maritime permit with 27.5% interest, expects that the well has the potential to open up a major new oil province in Guyane (French Guiana) with a significant number of further prospects and leads already identified.

Tullow said that the Zaedyus prospect has an estimated P10 prospective resource of 700 million barrels and is geologically analogous to its Jubilee field, located off the coast of Ghana.

The GM-ES-1 well is located offshore Guyane some 50km from the boundary with Brazil.

The ENSCO 8503 rig will drill the well, GM-ES-1, to a total depth of approximately 6500m subsea, with the well targeting one of several prospects in major undrilled Late Cretaceous deep water channel fan systems identified from the extensive 3D seismic survey acquired in 2009-10.