InterOil has said that during the stabilized flow from drill stem test (DST) #7 at the Antelope-2 Horizontal 2A well in Papua New Guinea, the well flowed gas at rates between 2.5 to 4.5 million cubic feet of natural gas per day (mmcfd) through various choke sizes with limited formation water produced.
A stabilized condensate-to-gas ratio (CGR) of approximately 24-27.7 barrels of condensate per million cubic feet of natural gas (bbls/mmcf) was measured on both a 32/64 and 22/64 inch choke.
This is approximately a 60% increase in CGR from DST #1, which was performed at the top of the reservoir and reported on 14 October 2009 at 16.5bbls/mmcf.
DST #7 was conducted over a 355ft horizontal interval from 9,357ft (2,852m) to 9,712ft (2,960m) total measured depth, at a true vertical depth (TVD) of 7,743ft (2,360m).
Formation evaluation logs from the entire Antelope-2 Horizontal-2A well were obtained over the total measured depth (TMD) interval of 1,719ft from 7,937ft (2,419m) to 9,656ft (2,943m) and indicate 99% limestone and dolomite with an average porosity of 10% through the pay intervals.
The data gathering process has been successfully completed at the Antelope-2 well and subsequent horizontal laterals and the further plan is to continue sub-surface analysis of the reservoir while preparing the well for long-term production.