In 2008 the partners acquired a 3D seismic survey of the concession area. The data was processed and interpreted by expert geoscientists and revealed previously unknown reservoirs with the potential to hold commercial reserves of gas. The results indicated locations for two new wells, Pg-10 and Pg-11, which were drilled in 2011 to depths of around 3,500 m. Pg-11 was sidetracked to Pg-11A for technical reasons. Both wells were successfully fracture stimulated and both tested gas at commercial rates during flow tests
The potential of the reservoirs in the field was confirmed in particular by Pg-10 which, after hydraulic stimulation, achieved a flow rate of 8+ MMscfd (230,000 m3/d), during a short test period, from the previously unproductive ‘F’ sands alone. The two new wells have not only confirmed the further commercial development potential of the field with state-of-the-art data acquisition and stimulation, but have also defined significant additional potential resource.
With easy access to the market and high gas prices, redevelopment of the independently assessed, ‘Most Likely’ 456 Bcf (12,900 Mm3) gas-in-place in the concession (independently assessed by RPS Energy) is a very attractive commercial proposition. Substantial additional reserves are likely to be confirmed by additional appraisal activity in the remainder of the field complex.