Description
Pressure gradient for multiphase pipe flow by Gray correlation, [psi/ft] It is commonly used for gas wells that are also producing liquid.
Excel Function Syntax
PressureGradientGray(Ql, Rho_l, Ul, Qg, Ug, SGgas, zFactor, IFTgl, pipeID, pipeRoughness, pipeAngle, P, T)
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