Results are still being assessed on this tight hole, but sources said signs are encouraging given the Doi Moi-3X well was flow tested.
VRJ comprises Russia's Zarubezhneft (50%), PetroVietnam (35%) and Japan's Idemitsu Oil&Gas (15%).
Last year, the joint venture flowed 3800 barrels of oil per day from the Doi Moi-2X well.
It was the first commercial discovery made by VRJ in Block 9-3 in the Cuu Long basin.
