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Rheological Properties Studies on the Steam-foam Drive in Heavy Oil Reservoirs

机译:稠油油藏蒸汽泡沫驱动流变特性研究

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摘要

At the temperature and pressure of reservoirs, the effect of steam saturation, foaming agent concentration, temperature and steam quality on rheological properties of foam oil system in steam flooding zone was studied, with shear rate varying from 0 to 600 s-1; Meanwhile, the effect of superheated water saturation, foaming agent concentration and temperature on rheological properties of superheated water oil system in superheated water flooding zone was studied when the shear rate ranged from 0 to 100 s-1. The result shows that foam oil system and superheated water oil system were both pseudoplastic fluids and can be described by power law model. The non-newtonian behavior of foam oil system increases with the increasing of steam saturation and foaming agent concentration and decreases with the increasing of steam quality and temperature. The non-newtonian behavior of superheated water oil system increases with the increasing of foaming agent concentration and decreases with the increasing of superheated water saturation and temperature. At lower shear rate, the apparent viscosity of foam oil system and superheated water oil system is more dependent on temperature, which fits more into the Arrhenius Equation.
机译:在储层温度和压力下,研究了蒸汽饱和度,起泡剂浓度,温度和蒸汽质量对蒸汽驱区泡沫油体系流变性质的影响,剪切速率为0〜600 s-1。同时研究了当剪切速率为0〜100 s-1时,过热水驱油区过热水饱和度,发泡剂浓度和温度对过热油体系流变性的影响。结果表明,泡沫油系统和过热水油系统都是假塑性流体,可以用幂律模型来描述。泡沫油体系的非牛顿性随蒸汽饱和度和发泡剂浓度的增加而增加,随蒸汽质量和温度的增加而降低。过热水油系统的非牛顿行为随发泡剂浓度的增加而增加,随过热水饱和度和温度的增加而减小。在较低的剪切速率下,泡沫油系统和过热水油系统的表观粘度更多地取决于温度,这更符合Arrhenius方程。

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