Bowleven provides the results of testing activities at the Sapele-1ST appraisal well drilling in the Douala Basin, offshore Cameroon. Drill stem testing was performed within the Deep Omicron interval at Sapele-1ST and a light oil flowed on test.

Highlights

Stabilised flow rate of 3,101 boepd produced on test at Sapele-1ST High quality light oil (39.2 degree API) produced on test; oil quality and gas-oil ratio comparable to that encountered at the original Sapele-1 well Testing programme underway at Sapele-2 Sapele-1ST update The principal objective of Sapele-1ST was to appraise the Deep Omicron oil discovery encountered in the Sapele-1 exploration well.

As previously announced, the Sapele-1ST well encountered log evaluated net pay conservatively estimated to be approximately 10 metres within the Deep Omicron interval, based on conventional wireline logs. The well was drilled to a TVD of 3,634 metres (4,483 metres measured depth) in water depths of around 25 metres approximately 2 kilometres south east of the Deep Omicron oil discovery in the original Sapele-1 vertical well.

Drill stem testing at Sapele-1ST was conducted over a 71 metre perforated interval. The interval flowed at a stabilised rate of 2,023 bopd of 39.2 degree API oil and approximately 6.47 mmscfd of associated gas on a 56/64 inch choke.

The interval tested at Sapele-1ST correlates on seismic with the equivalent Deep Omicron interval drilled by the original Sapele-1 well, where better developed sands were encountered. The Sapele-1 well had a confirmed oil pressure gradient at Deep Omicron and oil samples were obtained during logging activities. The oil quality, gas-oil ratio and pressures measured on test at Sapele-1ST are comparable to the samples and pressures taken at Sapele-1.

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