Strike Energy Ltd. confirmed a ‘substantial’ gas reserve in Western Australia’s onshore North Perth basin in permit EP469 through a completed a test program at the West Erregulla-3 appraisal well.
The 7-day multi-rate test program, across a 40 m interval in the Kingia sandstone reservoir at a depth of 4,733 m recorded continued high-flowing wellhead pressures. The well remained stable during the 5-hr high-rate test which was constrained by well testing equipment and recorded 83 MMcfd of gas with a flowing wellhead pressure of 3,474 psi on a 68/64-in. choke.
The well was shut in after the test and wellhead pressure returned to near original reservoir pressure after 3 hours, indicating the quality of the reservoir and the presence of a substantial connected gas volume beyond the well bore, Strike said.
There was no sand or formation water produced during the test and the quality was recorded as a low-impurity dry gas, in line with gas compositions from the field and the region.
Strike is operator with 50% interest. Warrego Energy Ltd. holds the remaining 50%.