Strike Energy Ltd. flowed gas during a preliminary clean-up prior to full production testing at Walyering-5 appraisal in permit EP447 in the onshore North Perth basin in Western Australia.
While awaiting arrival of the surge tank and separator on site, the company perforated the D-Sand in the well across a 12.6 m interval and unloaded well bore fluids. The well flowed gas through the bypass, Strike said.
The D-Sand is estimated to have a reservoir pressure of 4,516 psi and is flowing with well head pressures of 2,184 psi through a 24/64-in. choke to the bypass which is constrained under the current equipment set-up to about 7 MMcfd.
The flow was observed to contain a wet gas including condensate within the hydrocarbon stream. Carbon dioxide is negligible at less than 1% and there is no hydrogen sulphide.
The condensate-gas ratio will be measured when the separator is installed, and testing continues.
The D-Sand represents only 35% of the total net pay measured during the petrophysical evaluation of the well, Strike said. There are four wet gas charged Jurassic-age reservoirs in the field.
Once equipment arrives, each of the four sands (A, B, C, D) will be tested individually for several days before a final comingled test of all horizons. The test program is expected to take 15-20 days.
Strike expects to spud its next appraisal, Walyering-6, in May.
Strike farmed-out a 45% non-operated interest in EP447 to Talon Petroleum Ltd. in 2020 in exchange for a $6 million appraisal well carry (OGJ Online, July 20, 2020).
Strike and Talon formed an unincorporated joint venture in EP447 (Walyering) to progress the appraisal, and if warranted, develop the Walyering wet-gas discovery originally made by West Australian Petroleum (WAPET) in 1971.