re: Ann: Tap Enters Agreement to Pursue Uncon...
Southern Carnarvon Basin The Southern Carnarvon Basin covers an area of 188 000 km2, of which about 90 000 km2 is onshore (Fig. 1). Offshore the Northern Carnarvon Basin contains a thick Mesozoic succession that is the premier petroleum-producing province in Australia, whereas, onshore the Mesozoic succession is thin and mostly flat lying. The Southern Carnarvon seismic line 11GA-SC1 (Fig. 3) extends east–west across lower Paleozoic strata in the west (Gascoyne Platform), and the Permian depocentres of the Merlinleigh and Byro sub-basins in the east, separated by the Ajana Fault system. Major tectonic events, which have affected the basin, include mid-Carboniferous folding and faulting, Permian extension and Jurassic–Cretaceous continental breakup (Mory et al, 2003)
MORY, A. J., IASKY, R. P., and GHORI, K. A. R., 2003—A summary of the geological evolution and petroleum potential of the Southern Carnarvon Basin, Western Australia: Western Australia Geological Survey, Report 86, 26p.
from STRUCTURAL AND STRATIGRAPHIC ARCHITECTURE OF WESTERN AUSTRALIA’S FRONTIER ONSHORE SEDIMENTARY BASINS: THE WESTERN OFFICER AND SOUTHERN CARNARVON BASINS L.K. Carr1, R.J. Korsch1, A.J. Mory2, R.M. Hocking2, S.K. Marshall1, R.D. Costelloe1, J. Holzschuh1, J.L. Maher
Onshore E&P is much cheaper but... you still need reservoir, source and trap even if it is 'unconventional'
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