Oil was discovered in new-field wildcat G16783 4 S1B0 (Calpurnia), according to Anadarko in May 2017. The well is sited in Green Canyon Block GC 727 (G16783), situated in the East Texas Coastal Basin. G16783 4 ST1, which was drilled to final TD on 20 March 2017 encountered nearly 18m (~60 net feet) of oil pay in Miocene-aged sands. The well was spudded 7 March 2017, utilising the Diamond Offshore "Ocean Blackhornet" drillship. The Calpurnia well is expected to be tied back to one of Anadarko's nearby operated facilities in the Green Canyon protraction area. Equity in GC 727 is shared between Chevron USA (20.25% WI + Op), Statoil Gulf of Mexico (23.55%), Anadarko US Offshore (33.75%) and Shell Offshore (22.45%). Parent Company Anadarko Petroleum operates the lease.
GC 727 004S0B1 (Calpurnia) op. by Anadarko (33,75%, Statoil 23,55%, Shell 22,45%, Chevron 20,25%) in OCS lease G16783, 6m of net oil pay in the Miocene then 18m updip (subeco?).