TY - EJOU
AU - Liu, Yushan
AU - Su, Yubin
AU - Wu, Zhenhua
AU - Luo, Wei
AU - Liao, Ruiquan
TI - Effect of the Inclination Angle on Slippage Loss in Gas-Liquid Two-Phase Flow
T2 - Fluid Dynamics \& Materials Processing
PY - 2020
VL - 16
IS - 3
SN - 1555-2578
AB - The lifting efficiency and stability of gas lift well are affected by the socalled slippage-loss effect in gas-liquid two-phase flow. The existing studies on
this subject have generally been based on vertical and horizontal wells. Only a
few of them have considered inclined pipes. In the present work a new focused
study is presented along these lines. More specifically, we use the non-slip pressure drop model with Flanigan’s fluctuation correction coefficient formula
(together with the parameters of slippage density, slippage pressure drop and slippage ratio) to analyze the influence of the inclination angle on slippage loss for
different conditions (different gas-liquid superficial velocity and pipe diameters).
Moreover, the “standard regression coefficient method” is used for multi-factor
sensitivity analysis. The experimental results indicate that slippage loss is affected
by multiple factors, and the influence of the inclination angle on slippage loss is
less significant than other factors. The change of the slippage pressure drop with
the superficial velocity of gas-liquid is similar to that of the total pressure drop.
The inclination angles of 45° and 60° have the greatest influence on slippage loss.
The correlation between slippage density and slippage ratio is not obvious. Using
the so-called slippage ratio seems to be a more accurate option to evaluate the
degree of slippage loss.
KW - Inclined pipes; gas-liquid flow; slippage loss; pressure drop; gas-liquid ratio
DO - 10.32604/fdmp.2020.08896