... fraction. This paper focuses on the liquid viscosity effect on downward gas-liquid flow. Flow patterns, pressure drop, and liquid holdup are measured for downward vertical and near-vertical flow. The acquired data are compared with available mechanistic models, and the discrepancies are discussed. The 2...

... which the developed models perform the best. The intermittent flow critical sand deposition velocity data acquired by Najmi (2015) are presented in detail. Next, the effects of important parameters such as phase velocities, liquid viscosity as well as particle size and concentration on the critical...

... and 10 cp cases are in turbulent region (Re > 2100), while laminar flow (Re < 2100) exists for viscosities of 28.5 and 70 cp. The data show increasing critical velocity for turbulent flow regime and decreasing critical velocity for laminar flow regime with increasing liquid viscosity. Under current...

... Abstract Experiments with a seven-stage Electrical Submersible Pump (ESP) have been carried out to study the effect of liquid viscosity on the gas-liquid two-phase stage performance. The experimental tests provided data about the stage pressure increment as a function of the liquid flow rate...

... production logging two-phase flow elongated bubble production control upstream oil & gas slug flow barnea reservoir surveillance experimental observation viscosity flow pattern prediction production monitoring flow pattern transition liquid viscosity pipe inclination pipe...

... and a mechanistic flow model was developed. Erosion data were obtained for slug flow through an elbow and in a straight section of pipe. Erosion data show the effects of varying the superficial liquid and gas velocities, the liquid viscosity, the sand size, and sand rate. Data acquisition was accomplished through...

... in the literature were conducted using air and water. Data with a viscous liquid phase are scarce. Knowledge of the effect of liquid viscosity on slug flow is crucial to size pipelines and design pre-process equipment. In this study, the effects of high oil viscosity on slug frequency for horizontal pipes...

.... The experiments are performed on a flow loop with a test section 50.8 mm ID for inclination angles of 0° to 90°. Water and viscous oil are used as test fluids. Liquid viscosities vary from 0.001 to 1.237 Pa·s. A new drift velocity model is proposed for high oil viscosity for horizontal and upward inclined pipes...

... pipes. Air-glycerol water solutions having viscosities of 0.075 Pa·s and 0.15 Pa·s were used as test fluids. They concluded that liquid viscosity had little effect on flow pattern transition boundaries. Taitel and Dukler 6 conducted an investigation of the effect of pipe length on flow pattern...

... single-phase flow literature, liquid viscosity plays an important role in meter performance. Oil companies are becoming increasingly aware of these problems and want more evidence that a multiphase meter will perform regardless of fluid properties. To qualify the multiphase meter in high-viscosity flows...