Portuguese independent Galp Energia found a working petroleum systems with its Jaca-1 wildcat offshore Sao Tome & Principe earlier this year.

The well was completed in late July or early August, since when the partners — which also include Shell and state-owned ANP-STP — have been examining the results in detail.

It has now emerged that a working petroleum system was uncovered by the frontier deepwater probe, a finding that will increase industry interest in waters east of Sao Tome & Principe.