As the prospect of producing gas reservoirs increases and economic uncertainties become greater, a good way of predicting the two-phase flow in a gas well is very important to know what to be expected and contingency plans to be adopted.

This paper presents a method of predicting the type of two-phase flow in segments of a well using a program written in FORTRAN, Bill-FlowTRAN.f95. The pressure drop across each segment was arithmetically calculated from the difference in the flowing bottomhole pressure across the segment, obtained using Cullender and Smith (Katz et al., 1957) method. Orkiszewski calculation procedures for two-phase flow and other correlations were then used to predict the two-phase flow in such a segment. The flow regimes covered are mist, transition and slug flow since bubble flow would likely not occur in a gas well.

Keywords:
production monitoring, flow pattern, mist flow, spe 129510, Reservoir Surveillance, predicting two-phase flow regime, smith method, production logging, loss gradient, regime
Subjects:
Well & Reservoir Surveillance and Monitoring, Fluid Characterization, Reservoir Fluid Dynamics, Formation Evaluation & Management, Unconventional and Complex Reservoirs, Professionalism, Training, and Education, Production logging, Multiphase flow, Gas-condensate reservoirs
Copyright 2009, Society of Petroleum Engineers
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