This report summarizes three IEEFA studies and several analytical commentaries on the 2016 petroleum agreement (the “contract”) entered into between the government of Guyana and Esso Exploration and Production Guyana Limited (a subsidiary of ExxonMobil), CNOOC Nexen Petroleum Guyana Limited and Hess Guyana Exploration Limited. The agreement governs oil exploration, production and profit sharing between the companies and the government of Guyana in the Stabroek Block, an area of 26,800 square kilometers off the coast of Guyana. Esso is the party responsible for conducting day-to-day operations under the contract.