Migrated Oil in PEL 10 2011?18 Oct 2018 15:40
COMPETENT PERSONS REPORT (“CPR”)
Valuation of the Assets of Neptune Petroleum (Namibia) Ltd
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2.2 Shows in the Well 1911-15
Although no oil shows or oil-cut (carbon-tetrachloride-solvent-extracted) were observed while drilling, some pale fluorescence was seen in the drill cuttings. However the more intriguing and encouraging data are from one Albian carbonate core (3650-3750m) where gas chromatograms from core-extracts demonstrated lighter-ends. They also showed “low isoprenoid /n-alkane ratios and C-preference indices near 1.0. We believe these are evidence, among other indicators, that a mature source rock yielded these traces of residual oil. Holtar and Forsberg (2000) concluded that these hydrocarbons may have migrated from a mature source kitchen, either in a liquid phase as light oil or in a gaseous phase as a condensate. The authors were not able to be precise about the location of the source, however.
2.3 Oil seeps/slicks
The NPA report discusses a number of oil slicks in the east of the 0010 Licence, which they categorise as evidence that either oil was generated near the Namibian coast, or oil-spills from passing vessels, or seeps from a trap alongside gas bubbles. They note that the slicks are not over any closures. In our view the report is a useful indicator.
Strong indicators mentioned and seen at least as far as 2011 for secondary migration to the eastern side of our block PEL 10.
https://www.towerresources.co.uk/files/Namibia_Licence0010_Tower_CPR_Letter.pdf