... with a one-dimensional multiphase flow simulator. The hydrate formation and particles size are handled with a Population Balance framework and a more classic framework. For simulations of hydrate-forming oil-dominated flows in an experimental flow loop, the hydrate cut, subcooling, slurry viscosity and water...

... ABSTRACT The Gannet oil export pipeline is operating at relatively low flow rates. At these low flow rates, there is potential to have a flow regime with laminar flow instead of with turbulent flow. Therefore, the viscosity, or rather the rheological properties, of this oil are essential...

... predict. The focus of the work was on gas dominated three-phase flows, with low liquid rates (USL=0.0001-0.1 m/s), and mainly high gas rates (USG=4-14 m/s). The effect of the water viscosity was investigated by mixing glycerol (70–74%) with the water, and conducting experiments at different temperatures...

... film. This wall film can have a profound effect on the hydraulic roughness experienced by the gas, and subsequently the frictional pressure drop. Furthermore, the data showed that this effect was particularly important for high liquid viscosities and in three-phase flows, and simulations showed...

...). Dispersion viscosities derived from pressure drop measurements increased with higher dispersed phase fraction. However, the relative increase in viscosity was considerably less for the condensate – MEG system when compared with the model system. For all systems, a peak value of the viscosity was reached...

... upstream oil & gas low liquid loading water fraction liquid film annular stratified flow pipe wall pressure drop annular flow equation multiphase production technology experiment international conference production logging production control liquid layer stratified layer viscosity...

... the pipeline pressure network. Instead, heuristics for hydrate modules such as CSM-HyK OLGA have been developed that allow coarse estimation of hydrate blockage severity in oil-continuous flowlines, based primarily around the maximum apparent viscosity of the hydrate-in-oil slurry [3]. While such approaches...

... body for liquid viscosities of 0.51 Pa·s and 0.96 Pa·s. A new setup allowed accurate assignment of the signals from the Constant Temperature Anemometry (CTA) to the corresponding positions in the slug body. Experimental evidence shows that arrival of the slug fronts do not indicate an immediate...

... viscosity gas well deliquification upstream oil & gas anionic surfactant production monitoring surfactant solution pressure gradient foam flow surfactant concentration surfactant diameter loop surface tension concentration foam The use of surfactants for gas well deliquification...

... ratio is h 1 /h 2 = 1/9. They have the same densities but different viscosities, which are: λ = ν 1 /ν 2 : λ = 1, λ = 0.875 and λ = 0.75. The aim is to investigate the situation where water is used to transport oil in pipelines. The liquid-liquid interface produces remarkable turbulence modulation...

... to improve the overall holdup and pressure drop predictions significantly. ledaflow viscosity slug gas fraction experiment liquid pipe bubbly flow prediction fraction transition gas fraction multiphase flow regime production monitoring reservoir surveillance reynolds number equation...

... evaluation mpt 2017 complexity fluid dynamics production logging information risk assessment production control risk management model accuracy upstream oil & gas accuracy viscosity prediction reservoir surveillance flow metering flow line th bhr multiphase conference production...

... of the observed behaviour in the 4" vertical pipe, where the frictional pressure drop divided by that measured for two-phase gas-oil is plotted against the water cut and the liquid rate. These experiments and the associated measurements are described in more detail in the following sections. viscosity...

... (1); Kjølaas et al. (2); Biberg et al. (3); Staff et al. (4); Nossen et al. (5)). prediction multiphase production technology surface tension superficial velocity pipe wall viscosity effective roughness bhr group 18 international conference length scale gas core upstream oil...

... /ExxsolD60 with different compositions to achieve an oil viscosity between 69 and 160 mPa.s., tap water is used as the water phase. Both a fast response Xray tomography system and different gamma densitometers were utilised to measure holdups and phase distributions. In this work, a detailed analysis of time...

... Abstract The increasing world oil demand has led to develop the large heavy and extra heavy oil resources located in Venezuela. Heavy oil production and transportation are especially difficult due to the high viscosities of this oil that increase the complexity of the multiphase flow involved...

... Abstract Viscous liquid-gas two-phase flow experiments with liquid viscosity ranging from 1000 – 5000 cP (1.0 – 5.0 Pa.s) and air as the gas phase were compared with the point model simulations obtained from OLGA, a multiphase flow simulator. Flow patterns, pressure gradient, mean liquid...

... Abstract This paper focuses on the problem of gellation, one of the key problems associated with the pipeline transportation of waxy crude oils. The impact of thermal cycling on the rheological properties, such as viscosity and yield stress, of waxy crude oils is investigated in detail...

... in the Valdemar field can be explained by operational differences or the only possible explanation is variations in wax content in the liquid produced by the various wells. oil viscosity flow rate deposition equation of state multiphase 17 bhr group 2015 viscosity sm 3 water cut fluid modeling...

... ABSTRACT Heavy oil transportation is especially difficult due to the high viscosities of the oil and the complexity of the multiphase flow involved. Asphaltenes and resins have the highest molecular weight of crude oil. This work investigates an experimental behavior of a potential transport...