The company said the test over an interval from 2196m to 2312m, which also flowed about 175 barrels of condensate, was limited by the capacity of the surface testing equipment.
InterOil added the results increased the hydrocarbon column by 184 feet, bringing the overall height from the highest known gas at Elk-1 to 1948ft.
The first drill stem test had flowed gas at a rate of 7.23MMcfd and 82 barrels per day of condensate.
InterOil is preparing to carry out a third drill stem test over an interval from 2325m to 2382m.
The Elk-4 well is targeting the Puri, Mendi and Antelope Reef limestone and could confirm the Elk and Antelope structures form a continuous gas field.
The gas from this structure is intended for Liquid Niugini Gas' proposed liquefied natural gas project in PNG.
Liquid Niugini, which is an equal joint venture between InterOil, Merrill Lynch and Clarion Finance, is planning to build a two-train LNG plant capable of producing up to 9 million tonnes of LNG per annum from 2012.
