Just recapping. Wow16 Feb 2024 19:47
The results have highlighted a previously unrecognised reservoir interval extending over part of the Darwin East and Darwin West structures, just above the main reservoir. The interval is poorly developed in the discovery well but can be seen to expand to the east and south on the inverted seismic data. This porous interval is considered to be charged and to have a common contact with the main Darwin reservoir. Consequently, the Darwin resource assessment has now been revised to include this interval. Two lower intervals on Darwin West, previously identified and described but not included in to the resource assessment, have also been included. The revised best estimate (P50) un-risked estimate for the combined Darwin East and Darwin West structures, incorporating all proven and potential reservoirs, is 360 million barrels of recoverable condensate.
The main near-field prospects targeted by the seismic inversion study are: Covington, Morgan, Sulivan, Stokes and Wickham.
The principal target for Covington and Morgan is the main Darwin shallow marine sandstone reservoir. This north-northwest trending interval appears laterally continuous and, in the Company's view, represents a series of eastwards prograding sand bars on the Aptian shelf. Based on the seismic amplitude response we believe these prospects are more likely to be oil charged. Best estimate (P50) un-risked recoverable resource estimates for the Covington and Morgan prospects are 216 and 230 million barrels of oil respectively.
The target intervals for the Sulivan and Stokes prospects are older and deeper than the main proven Darwin reservoir. This older stratigraphy was not penetrated in the discovery well and some uncertainty remains as to the age and depositional environment of the potential reservoir. Based on the amplitude anomalies, the hydrocarbon phase is believed to more likely to be gas condensate, similar to Darwin. Best estimate (P50) un-risked resource estimates for Sulivan are 473 million barrels of recoverable condensate and for Stokes 134 million barrels of recoverable condensate.
The Wickham prospect has a target stratigraphically younger than the main Darwin reservoir. This shallow marine sand interval was not encountered in the discovery well. The prospect is located on the downthrown side of the main Darwin fault. Based on the amplitude response, this prospect is believed to be more likely oil charged. The best estimate (P50) un-risked recoverable resource is estimated at 119 million barrels.
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