BOIL20 Oct 2022 15:15
SundaGas Timor-Leste (Sahul) Pte. Ltd. (“TLS”), a fully owned subsidiary of Baron, is the parent company of the Timor-Leste subsidiary SundaGas Banda Unipessoal Lda. (“Banda”), which is the Operator of and 75% interest holder in the offshore Timor-Leste TL-SO-19-16 PSC. The remaining 25% interest is held by a subsidiary of the Timor-Leste state oil company Timor Gap, E.P., whose interest is carried by Banda to development.
The Chuditch PSC is located approximately 185km south of Timor-Leste, 100km east of the producing Bayu-Undan field, and 50km south of the Greater Sunrise potential development. It covers an area of approximately 3,571 km2, in water depths of 50-100m, and contains the Chuditch-1 gas discovery drilled by Shell in 1998. The well was drilled in 26 days at a cost of US$8 million and encountered a 25m gas column in the Jurassic Plover formation on the flank of a large faulted structure.
In July 2021, Baron announced the results of a review of prospective resources by THREE60 Energy Asia Sdn. Bhd. (“THREE60 Energy”), an independent consultancy specialising in petroleum reservoir assessment and asset evaluation, for the Chuditch PSC. The results are based on the interpretation of legacy 2D seismic data:
independent review of the Chuditch PSC, validated to SPE PRMS 2018 industry standards, indicates aggregate gross Mean Prospective Resources of 3,368 Bscf of gas and 30 MMbbl of condensate, equivalent to a total of 591 MMBOE;
subsurface risks for prospects and lead are estimated to be low, since they share analogous geological characteristics to the Chuditch-1 and other gas discoveries in adjacent Timor-Leste and Australian waters;
the High Estimate of aggregate gross Prospective Resources equivalent to 1,156 MMBOE may reflect the potential for a single, large accumulation.
Banda has an agreement with Spectrum Geo Australia Pty Ltd., a wholly owned subsidiary of TGS-NOPEC Geophysical Company ASA (“TGS”), for the licensing and reprocessing of 3D seismic data. This major plank of the initial work programme is designed to address issues with sea-bed topography and shallow geological features that significantly impact the existing seismic image at the reservoir level local to the Chuditch area and create artifacts that seismic processing technologies have hitherto been unable to remove. Working closely with TGS a pre-stack depth migration (“PSDM”) processing routine has been tailored to resolve these issues, utilising new algorithms that address areas of complex seabed and shallow geology. Although computationally intensive and time-consuming, this work is resulting in a considerably enhanced subsurface image, critical for the definition of the size and shape of the accumulation. The interpretation of the reprocessed 3D seismic will lead to a revision and increase in confidence in the above gas volumes estimates, and inform the location of potential future wells.