The Total SA-led joint venture has confirmed the discovery of a 597-ft column of gas-bearing dolomite with a vertical gas column of 1,112 ft with its Antelope-4 ST-1 sidetrack well drilled in PRL 15 onshore Papua New Guinea.
The Antelope-4 ST-1 well intersected the top of the reservoir 118 ft higher than the original Antelop-4 penetration. Joint-venture partner InterOil Corp. said its interpretation of data from Antelop-4 and Antelope-5 suggests that the field-wide gas-water contact is deeper than previously thought (OGJ Online, Feb. 16, 2015).
Both Elk and Antelope are located onshore in Papua New Guinea’s Gulf Province. The JV includes InterOil and Oil Search Ltd. (OGJ Online, Feb. 11, 2015).
Elk-Antelope is estimated to hold 7-9 tcf of gas, which is sufficient enough to supply two LNG trains. There also is a significant liquids component.
The partners intend to begin drilling Antelope-6 in December as part of the appraisal program to define resource for the Papua LNG Project.
The JV also is considering an additional appraisal well on the western flank of Antelope field that could add 1-3 tcf of gas equivalent.