--> Source Rocks of the Cooper Basin
[First Hit]

International Conference & Exhibition

Datapages, Inc.Print this page

Previous HitSourceNext Hit Rocks of the Cooper Basin

Tehani J. Kuske1, Lisa Hall1, Anthony J. Hill2, Alison J. Troup3, Dianne S. Edwards1, Christopher J. Boreham1 and Tamara Buckler1

1Geoscience Australia, Canberra, ACT, Australia.
2South Australian Department of State Development, Adelaide, SA, Australia.
3Geological Survey of Queensland, Brisbane, QLD, Australia.

September 16, 2015 Wednesday 10:00 A.M. International Conference & Exhibition, Melbourne, Australia

Abstract

The Cooper Basin is a late Carboniferous-Middle Triassic intracratonic sag basin in northeastern South Australia and southwestern Queensland. The basin is one of Australia's premier onshore hydrocarbon producing provinces and, by providing domestic gas for the East Coast Gas Market, is nationally significant. This study reviews the distribution, quality and maturity of Previous HitsourceNext Hit rocks across the Cooper Basin and forms part of Geoscience Australia's Previous HitsourceNext Hit Previous HitrockNext Hit program. All publicly-available total organic carbon (TOC) content and Previous HitRockNext Hit-Eval pyrolysis data for the Cooper Basin were compiled into a single database, quality checked and compiled by well and formation to highlight the multiple viable Previous HitsourceNext Hit Previous HitrockNext Hit units throughout the Permian. The Toolachee and Patchawarra formations represent the principal Previous HitsourceNext Hit rocks in the basin. These comprise coals and carbonaceous shales deposited in fluvial deltaic and peat swamp environments and show good to very good oil and gas Previous HitsourceNext Hit potential. Additional Previous HitsourceNext Hit intervals include the gas prone lacustrine Roseneath and Murteree shales, as well as coals and carbonaceous shales of the Daralingie and Epsilon formations. Permian Previous HitsourceNext Hit Previous HitrockNext Hit distribution was investigated using lithofacies mapping combined with geochemistry data. Lithofacies maps published for South Australia were integrated with electrofacies data from Queensland to produce new, internally consistent, net Previous HitsourceNext Hit thickness maps for key intervals, including coals and carbonaceous shales of the Toolachee and Patchawarra formations, and the Roseneath and Murteree shales. Pyrolysis data that indicate the presence of an in-situ Previous HitsourceNext Hit Previous HitrockNext Hit with remaining hydrocarbon generation potential (i.e. TOC > 2% and S1+S2 > 3 mg hydrocarbons/g Previous HitrockNext Hit) were mapped by formation, demonstrating the broad extent of Permian Previous HitsourceNext Hit rocks across the basin. Toolachee and Patchawarra Previous HitsourceNext Hit rocks are present in most major depocentres, including the Windorah Trough and Ullenbury Depression in the northern part of the basin, where maximum coal thicknesses still reach more than 10 m. Previous HitSourceTop rocks within the Roseneath and Murteree shale are generally restricted to the southern Cooper Basin.

AAPG Datapages/Search and Discovery Article #90217 © 2015 International Conference & Exhibition, Melbourne, Australia, September 13-16, 2015