... ABSTRACT This study presents experimental data for pressure gradient, liquid holdup, and flow regimes. To the knowledge of the authors, there are no studies in the literature on vertical downward two-phase flow in annulus. The experimental results for downward two-phase flow in the annulus...

... series production logging void fraction characteristic flow structure production control flow pattern pipe liquid velocity annular flow upstream oil & gas gas velocity bhr group 2018 correlation reservoir surveillance shirazi liquid viscosity orientation flow regime Investigation...

.... Flow regime were recorded with high speed video cameras. Experimental results were compared with existing models by Barnea (1987) and with a commercial dynamic multiphase flow simulator (OLGA7.3 ® ). Predictions with unified model had acceptable agreement with experimental data. 1. INTRODUCTION...

... at the top of line with and without LDHI. Two commercially available anti-agglomerant additives (AA-1 and AA-2) were tested in gas / condensate / water system at two water cuts under different multiphase flow regimes. The tests were analysed based on pressure, temperature and pressure drop measurements...

... friction, and liquid-liquid dispersal. gas superficial velocity prediction slug superficial velocity upstream oil & gas flow regime field data holdup reservoir surveillance agreement interfacial friction liquid content bhr group 2018 multiphase 11 simulator inclination angle...

..., it was found that at high pressure, the slug flow region was very narrow. In particular, at low gas-liquid ratios, the prevailing flow regime was determined to be a kind of " pseudo slug flow", which was characterized by large waves that did not quite extend to the top of the line. Simulations...

... Abstract This paper presents a simplified model for gas-liquid two-phase flow in churn and annular flow regimes for small- and large-diameter near-vertical pipes. Churn flow is considered by many investigators as the least understood flow regime in upward gas-liquid flow in vertical pipes...

... Abstract In oil and gas production, annular flow is a common flow regime found in wells and pipelines. Predicting erosion in multiphase flow is a challenging task as so many factors and phase interactions are involved. Computational Fluid Dynamics (CFD) offers a way to predict multiphase flow...

... in Figure 6 is in a transition regime between large-wave and slug flow. In this flow regime, the large waves have clear slug structures with fronts and tails; some waves grow to short slugs or become slug precursors. Although the mean holdup time traces (again identical for the two projections) in Figure 6...

... early design stage bhr group 2014 coating corrosion allowance tolc upstream oil & gas thermal gradient condensation rate tolc rate corrosion rate pipeline corrosion riser corrosion corrosion inhibitor water chemistry flowline corrosion materials and corrosion flow regime...

... monitoring flow regime pipe flow pressure gradient experiment stratified flow production control dispersion water-in-oil emulsion water cut production logging concentration viscosity crude oil viscous oil bhr group 2014 emulsion viscosity shear stress A study of viscous oil and water pipe...

.../water systems suggested a relationship between hydrate volume and flow regime on pressure drop. In the current work, a simple hydrodynamic slug flow model, based on fundamental multiphase flow concepts, is coupled with a transient hydrate kinetics model and a pressure drop model to study the effect...

..., and compressors. upstream oil & gas pipeline pipeline upstream flow rate pipeline-riser system flow regime buffer vessel liquid production downward pipeline-riser configuration test loop oscillation experiment configuration bhr group 2012 hydrodynamic slug flow riser base hilly...

... ABSTRACT Forces on bends and T-joints have been measured in a one inch diameter horizontal air-water setup for all flow regimes. The highest force levels are observed in the slug flow regime, whereas annular flow gives the lowest force levels. The amplitude was measured to be between 1 and 10...

... ABSTRACT Data from two and three phase high pressure experiments using North Sea crude oil, brine and hydrocarbon gas were compared with results from the OLGA point model in the stratified, intermittent and dispersed flow regimes. Two water cuts were investigated for the three phase...

... was developed and solved in Fluent. The model predictions of flow regime transition and slug frequency were compared with experimental data and those of OLGA model. The slug movement was described based on the predicted liquid holdup traces at different locations of the system. Slug mitigation methods...