Joint venture partner InterOil Corporation announced this in its market report on Friday.
The second test it said is to improve certainty on Antelope’s minimum connected volume.
InterOil said on advise from Total, 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.
It stated that pressure gauges have been placed in Antelope-1 as an observer well. The test is expected to take approximately one month to complete.
InterOil’s chief executive officer 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."
The company had stated in its market report that it has also been advised by Total that Antelope-6 appraisal well was preparing to drill ahead at 1120 metres (3674 feet) true vertical depth sub-sea.
Antelope-6 spudded on December 23, 2015, and has a proposed total depth of around 2464 metres (8084 feet) true vertical depth sub-sea.
According to the report the PRL15 joint ventures (which also includes Oil Search) are discussing an additional appraisal well to the west of Antelope-5.
The decision whether to drill a further appraisal well will follow the evaluation of the Antelope-6 appraisal well and the results of the latest flow test at Antelope-5.