A report said the well intersected some 386 metres of the the primary objective, the Gregory Sandstone. A flow test of this section (2666 metres to 3050 metres) failed to produce any flow of natural gas, the companies said.
Gregory River-3 twinned the Gregory River-1 well, which was drilled by Shell in 1966 and encountered a 500 metre gross gas column in low porosity sandstones. It was drilled under-balanced, using air/foam as the drilling fluid instead of conventional mud, to minimise formation damage, hopefully enhancing the prospects of achieving gas flows at commercial rates.
The Gregory River-3 well is located approximately 30 kilometres south of the town of Bundaberg, Queensland, and some 250 kilometres north of Brisbane within the Maryborough Basin.
