New imaging results and improved interpretation of Late Triassic depositional features within the Browse Basin, North West Shelf of Australia
Jarrad Paul Grahame A * and Tran Thinh To BA CGG Multi-Client & New Ventures, Perth, WA, Australia.
B CGG Seismic Imaging, Perth, WA, Australia.
The APPEA Journal 62 S421-S425 https://doi.org/10.1071/AJ21154
Accepted: 5 March 2022 Published: 13 May 2022
© 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing on behalf of APPEA.
Abstract
The Maxima 3D is located approximately 300 km from the north-west coast of Australia, within the Brecknock–Scott Reef anticlinal trend, at the margin of the Scott Plateau and Caswell Sub-basin. The survey was acquired with eight overlapping swaths in and around the Scott Reef, which is a large carbonate build-up on the present-day seafloor. The area within and around the reef trend represents a significant challenge for imaging, involving complex survey acquisition, very shallow to deep water depths and strong velocity distortion associated with the present-day carbonate build-up. In light of this, CGG undertook a reprocessing test of a swath of the Maxima 3D, to apply the latest processing techniques and demonstrate the potential imaging uplift in a very challenging area. The enhanced data swath has led to a step change in interpretation capabilities for the data, resulting in the identification of what is inferred to be a Late Triassic, isolated reef build-up, on a structural high that developed contemporaneous with early basin formation. These Late Triassic reefal build-ups have been identified by CGG within a number of large complexes, through a comprehensive review of the Triassic prospectivity potential, and represent an emerging play type for the North West Shelf.
Keywords: Browse Basin, carbonate play, Late Triassic, least-squares Q Kirchhoff pre-stack depth migration, Maxima 3D, North West Shelf, Scott Reef, time-lag full waveform inversion.
Jarrad Paul Grahame currently holds the position of Senior Geoscientist with CGG Multi-Client & New Ventures for the Asia-Pacific region. Jarrad completed a BSc in Exploration Geophysics at Curtin University of Technology in Perth, Western Australia, before joining the oil and gas exploration industry in 2010. Jarrad has extensive experience in seismic interpretation and integration of well and seismic datasets for both onshore and offshore basins, including clastic and carbonate resource plays. Jarrad has worked on basins in Australia, South-East Asia, Europe and North America, encompassing extensional, compressional and strike-slip tectonic environments. Jarrad is a member of PESA, SEG, SEAPEX and AAPG. |
Tran Thinh To is a Senior Seismic Imaging Team Leader at CGG Seismic Imaging Australia. He joined CGG in 2014 and worked for CGG Seismic Imaging Singapore from 2014 to 2018 prior to joining CGG Australia. He graduated from National University Singapore with a PhD in Materials Engineering. |
References
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