Old Boy's view13 Sep 2022 17:12
Afternoon
I am not going to say much at present...
new folk only have to spend time reading my previous posts (yes, I know!)
But some might consider the following to be of ,at least, passing interest:
NEOGENE
There are a number of seismic interpretations of the Neogene sequence in the Guercif
basin. Zizi (Zizi, 2002) produced an isopach map of the Tertiary which shows a thickness of
over 1,900m 25km SSE of Guercif town. ONHYM (Charrat, December 2004) produced a
time structure map on Base Tertiary unconformity (same as base Neogene). Sani (F. Sani,
2000) contains a base Neogene time isopach map that is very similar and also shows the
parts of the Neogene basin that were uplifted and eroded in the late Neogene-Quaternary.
The main isopach thicks are in the area around wells GRF-1, MSD-1 and north of KDH-1
which are west of Guercif town (see Figure 3 for locations). Here the Neogene-Quaternary
reaches 1,900msecs TWT which equates to around 2,000m. This is confirmed by the GRF1 well where the base Neogene was encountered at 1,932m. We believe the likely
maximum thickness of the Neogene-Quaternary sequence in the Guercif basin
is in the range 2,000 to 2,400 metres and that reservoirs in the interval 1,400m to 2,400m would be
attractive targets for biogenic gas
Regards
GRH