Vu Duc , U., Le Vu , Q., Nguyen Van , T. and Trieu Hung , T. 2019. Predicting water influx for gas production wells of Lan Do field using material balance method. Petrovietnam Journal. 6, (Jun. 2019), 58-62. DOI:https://doi.org/10.25073/petrovietnam journal.v6i0.182.