The extended well test will flow Antelope-5 at around 50 million standard cubic feet per day for approximately two weeks before being shut-in to record the subsequent pressure build-up.
In a statement, InterOil said the pressure gauges have been placed in Antelope-1 as an observer well.
The test is expected to take approximately one month to complete.
InterOil Chief Executive Dr Michael Hession said the initial flow test conducted in June 2015 provided a good indication of the minimum connected volume in Antelope; this second test aims to further support those findings.
“In order to improve the certainty of the minimum connected volume, we have added additional pressure gauges and we plan to flow five times more gas than we did in our initial test last year.”