Hess Guyana (Block B) Exploration Limited, the subsidiary of Hess Corporation, signed an agreement with Esso Exploration and Production Guyana Limited (ExxonMobil) to acquire a 15% participating interest in the Kaieteur Block, offshore Guyana. This block is located approximately 250 km offshore the coast of Guyana, adjacent to the Stabroek Block, where Hess has a 30% work interest.