Applications of property modelling from 2D seismic data to reservoir identification and sealing potential for petroleum exploration and CO2 sequestration
Hadi Nourollah3D-GEO Pty Ltd, Level 5, 114 Flinders Street, Melbourne, Vic. 3000, Australia. Email: hadi@3d-geo.com
Exploration Geophysics 42(4) 239-248 https://doi.org/10.1071/EG10025
Submitted: 27 September 2010 Accepted: 21 September 2011 Published: 8 November 2011
Abstract
This paper describes a process by which seismic related properties from 2D seismic lines are extracted and a 3D property model is constructed. This interpretation workflow is then tested and described on a pilot area in the northern portion of the onshore Gippsland Basin, Australia. The primary reservoir sands in this region appear to be deposited in a channel recognised on 2D seismic lines. Seismic inversion was performed on each 2D seismic line to differentiate between geological bodies, and these inverted seismic sections were fed into a 3D model in an attempt to track the sand filled channels and seals, based on the seismic-derived attributes. The sealing sequence is characterised by distinctive log/seismic properties, which were modelled in 3D, and attempts are made to discuss seal potential in terms of geometry and integrity.
Key words: Gippsland, property modelling, seal, sequestration.
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