The AWE Ltd.-led joint venture in the onshore north Perth basin in Western Australia has conducted a successful flow test of its Waitsia-3 appraisal well (OGJ Online, Aug. 11, 2017).
Well clean-up began on Oct. 18 and the following day the company recorded a gas flow at an instantaneous maximum rate of 50 MMcfd and an average of 49.5 MMcfd on an 80/64-in. choke. Flowing wellhead pressure was measured at 1,929 psi during a 2½-hr period.
The well is now being shut in for a brief pressure build-up survey after which AWE will run a series of flow tests at various choke settings, rates, and wellhead pressures. The Waitsia-3 evaluation will be followed by similar tests on the Waitsia-2 and Waitsia-4 wells.
The test program is designed to determine well deliverability from the southern extent of the field and to collect gas samples for compositional analysis.
The zone being tested in Waitsia-3 is the Kingia sandstone where a 42-m interval has been perforated between 3,248 m and 3,290 m measured depth.
The test program for all three wells is expected to be completed by the end of November.
Waitsia field lies in production licences L1/L2 about 20 km east-southeast of Dongara.
AWE is operator with 50% and Lattice Energy—recently acquired by Beach Energy Ltd.—holds the remaining interest.
