On Cullinan-1, from the public sources I have been able to access including Sintana June 2023 presentation, Cullinan was a large structural high with a carbonate platform/buildup developed on it as per Oldgeo post with modified PCL play diagram.
GALP/Sintana were excited about Cullinan-1, for if it came in as a commercial discovery, part of the Cullinan structural closure extended into PEL 83. GALP should have had the trespass Cullinan 3D seismic data extending into PEL 83 to gain the necessary offset fold. See map below. I would make the comment that Woodside and GALP should also have the Moosehead 3D seismic day bit is is quite old and don't know how well it would stand up to reprocessing.
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