Strike Energy Ltd. has suspended Walyering-5 to ready the well for final completion as a production well after a 21-day flow test exceeded expectations.
The test of Walyering gas field onshore Western Australia in the North Perth basin produced a choke coefficient peak rate of 75 MMcfd on a 72/64-in. choke with a flowing well head pressure (FWHP) of 2,599 psi.
The company is investigating minor changes to production infrastructure design to increase throughput to 35 MMcfd of gas with potential to produce up to 42 terajoules/day without upscaling major components of the planned facility.
Strike said the flow of gas, comingled from the A and B sands, was limited by the testing package on site and is the third highest test rate recorded in the Perth basin.
Stabilized flows of 67 MMcfd with an FWHP of 2,634 psi were measured on the same setting when diverted through the separator to measure liquid hydrocarbon streams of 8 bbl per MMcf of gas.
The comingled flow followed individual tests of the A and B sands.
The A-Sand flowed at a maximum recorded rate of 59 MMcfd with stabilized rates of 52 MMcfd maintained for over 24 hours at an FWHP of 2,557 psi through a 64/64-in. choke.
The B-Sand flowed at a maximum recorded rate of 32 MMcfd with stabilized rates of 28 MMcfd over 24 hours at FWHP of 2,175 psi through a 48/64-in. choke.
Both sands are of high quality with negligible impurities and condensate ratios of 9 bbl per MMcf of gas (A-Sand) and 6 bbl per MMcf of gas (B-Sand). The light oil had API values of 39-47 degrees.
Walyering-6 appraisal well is currently drilling at 2,130 m.
Walyering lies in permit EP447. Strike is operator with 55% interest. Talon Energy has 45%.