In late July 2018, Fieldwood Energy acquired Marathon Oil's entire 18.2308% WI in five Mississippi Canyon blocks, which encompass the Gunflint Field (previously known as Freedom Field): MC 904 (G33182), MC 948 (G28030), MC 949 (G32363), MC 992 (G24133), MC 993 (G24134). Gunflint, which was discovered in 2008, contains stacked Middle Miocene age reservoirs between depths of 7,254-8,230m TVDss. A mixture of black oil, rich gas condensate, and dry gas have been encountered in seven reservoirs. Only three oil reservoirs, Green B, Green C, and Blue E, are considered commercially viable for development. Reservoir pressures and temperatures range from 17,000 to 19,000 psi and from 210 to 240degF, respectively. Petrophysical analysis determined that the primary reservoir sands are high-quality sandstones with good permeability. Following completion of the transaction, which is effective as of 1 April 2018, equity in MC 904, MC 948, MC 949, MC 992 (northern half) and MC 993 (northern half) is now shared between Fieldwood Energy (49.3726% WI + Op), Ecopetrol America (31.5%) and Samson Offshore Mapleleaf (19.1274%).
Fieldwood Energy acquired Marathon Oilâs entire 18,2 % WI in 5 Mississippi Canyon blocks, which encompass the Gunflint Field (previously known as Freedom Field): MC 904 (G33182), MC 948 (G28030), MC 949 (G32363), MC 992 (G24133), MC 993 (G24134).