vineseeker,
This is all I could find in short order.
June 30, 2009 www.Platts.com regarding block 1
So far, exploration in the JDZ has been slow, with only one well drilled since the 2001 agreement between Nigeria and Sao Tome. That well was drilled back in 2006 by Chevron, but the well did not prove commercial.
The guardian...July 2008 regarding block 1
"Public anger was followed by disappointment at the oil drilling results. When Chevron tested its deep-water block in 2006, it struck oil but not in commercial quantities".
Badog