HENC...............NOW............................
Post# of 226
HENC...............NOW..................................................
Why does any of this matter. Apparently the 4 way closure thing is a BIG DEAL like the activation of P53 in biology.
Here is a nice article explaining that.
http://www.appliedgeophysics.com/images/4Wayclosure.pdf
Going further why should we care about the Namur sandstones?
Since the 1978 discovery of oil at the Strzelecki Field, over 40 commercial oil fields have been discovered within
the Eromanga Basin sequence overlying the Cooper Basin in South Australia (Fig. 13.1). Of these fields ~24 were
still producing as of April 2005, with cumulative production from all fields to this time totalling in excess of
15 x 10 kL (Table. 13.1). The more significant reserves have been discovered in the McKinlay Member – Namur
Sandstone and the Birkhead Formation – Hutton Sandstone. Simple low-amplitude anticlines that drape over older
structural features constitute the dominant type of trap in the region. The relatively thick braided fluvial Hutton
Sandstone and Namur Sandstone are the principal reservoirs. The reservoir characteristics are very good with
porosities in the range of 15–25% and permeabilities of several tens to hundreds of millidarcies. Oil is also trapped
in basal sandstones of lesser reservoir quality in the overlying formations, the Birkhead Formation and McKinlay
Member of the Murta Formation respectively. The Strzelecki Field has the largest accumulation of ~3.9 x 10
6 kL with three pools trapped respectively in the McKinlay Member – Namur Sandstone, intra-Namur Sandstone and
Birkhead Formation – Hutton Sandstone
The whole story about that is very interesting found here
http://www.misa.net.au/__data/assets/pdf_file...2nd_13.pdf
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