Successful Hydraulic Stimulation in Pohang

    Currently there are two deep boreholes in Pohang: PX-1 at 4.2 km and PX-2 at 4.3 km. The first and second hydraulic stimulations have been carried out in January and February 2016 in PX-2 and in December 2016 in PX-1. The flowrate-pressure response in PX-1 is promising and shows that the fractured reservoir may be stimulated with a reasonable wellhead pressure. At the moment, the operators are challenged with the cleaning of PX-2 and the control of induced microseismicity. The next step in Pohang will be the first DESTRESS-led hydraulic stimulation campaign to demonstrate the soft stimulation technique.

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