b'Complex are taxable in Equatorial Guinea at a 35% statutory tax rate, which will impact our overalleffective tax rate.Greater Tortue AhmeyimIn February 2018, the governments of Mauritania and Senegal signed an Inter-GovernmentalCooperation Agreement (ICA), which enabled the development of the cross-border Tortue naturalgas field to continue moving forward. With this agreement in place, all major FEED contracts havebeen awarded by the operator.In December 2018, Kosmos and its partners announced that a final investment decision forPhase 1 of the Greater Tortue Ahmeyim project has been agreed. The Greater Tortue Ahmeyim projectwill produce gas from a deepwater subsea system to a mid-water FPSO then to a FLNG facility at anearshore hub located on the Mauritania and Senegal maritime border. The FLNG facility for Phase 1is expected to deliver approximately 2.5 million tons per annum on average. The project will provideLNG for global export, as well as make gas available for domestic use in both Mauritania and Senegal.First gas for the project is expected in the first half of 2022. Following a competitive tender process andsubject to final documentation, BP Gas Marketing has been selected as the buyer for the LNG offtakefor all parties of Greater Tortue Ahmeyim Phase 1.In February 2019, Mauritania and Senegal each issued an exploitation authorization for theGreater Tortue Ahmeyim Unit area covered by the GTA UUOA. Kosmos and BP signed CarryAdvance Agreements with the national oil companies of Mauritania and Senegal, which obligate usseparately to finance the respective national oil companys share of certain development costs. Kosmostotal share for the two agreements combined is up to $239.7 million, which is to be repaid through thenational oil companies share of future revenues.MauritaniaIn June 2018, we completed a 9,400 square kilometer survey over Block C18 offshore Mauritania.SenegalIn February 2018, the Requin Tigre-1 exploration well was drilled to a total depth of 5,200 metersand designed to evaluate Cenomanian and Albian reservoirs in a structural-stratigraphic trap, chargedfrom an underlying Neocomian-Valanginian source kitchen. The prospect was fully tested but did notencounter hydrocarbons. Post-well analysis is currently ongoing to determine the reasons it wasunsuccessful. The well has been plugged and abandoned.In July 2018, we entered into the second renewal of the exploration period for the Senegal Blockscontract areas, which lasts for two and one half years. Each of the contract areas requires oneexploration well to be drilled during the second renewal period. In the event of commercial success, wehave the right to develop and produce oil and/or gas for a period of 25 years from the grant of anexploitation authorization from the government, which may be extended for at least one additionalperiod of 10 years under certain circumstances.SurinameIn June 2018, the Anapai-1A exploration well was drilled to a total depth of approximately4,600 meters and was designed to test lower Cretaceous reservoirs in a structural trap on the flank ofthe basin. The prospect was fully tested, encountering high quality reservoirs in the targeted zones, butdid not find hydrocarbons. The well has been plugged and abandoned and the well results integratedinto the ongoing evaluation of the remaining prospectivity in our Suriname acreage position.79'