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Critical liquid-carrying model for horizontal gas well

Received: 5 March 2018 Accepted: 7 July 2018 To identify the accurate gas volume to carry liquid in horizontal gas well, this paper simulates the gas-liquid two-phase flow in a single pipe on the platform of multiphase pipe flow. Through indoor experiments on gas-liquid two-phase flow, it is confirmed that the inclined section (inclined angle: 45°~ 60°) is mostly likely to suffer from liquid loading in horizontal gas well. Then, a new critical liquid-carrying model was built after fitting the liquid holdup calculation formula at different inclined angles, considering the actual liquid-carrying phenomenon. The proposed model was proved accurate enough for engineering application through verification by indoor experiments.