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Experimental investigation of DME-water-crude oil phase behavior and PVT modeling for the application of DME-enhanced waterflooding

机译:DME-原油原油相行为的实验研究和PVT建模在DME强化注水中的应用

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摘要

Due to first contact miscibility with hydrocarbons and partial miscibility with water/brine, DME has shown a significant potential for enhanced waterflooding technology that has been developed recently in Shell. To provide a solid foundation for this EOR application, understanding the phase behavior of DME-brine-oil systems is crucial - which is practically non-existent for the conditions of interest in the open literature. We perform experimental study to measure partitioning of DME between hydrocarbon and aqueous phases. We also develop a PVT model using cubic plus association (CPA) to characterize the mixture of DME, water/brine and hydrocarbons based on experimental data. Finally, we investigate the dependency of the partitioning coefficient on feed per phase and show that it decreases with increase in DME mole fraction in hydrocarbon phase while increases with increase in salinity. (C) 2016 Elsevier Ltd. All rights reserved.
机译:由于与烃的首次接触混溶性以及与水/盐水的部分混溶性,DME在增强壳层注水技术方面显示了巨大的潜力,壳牌公司最近开发了这种技术。为了为该EOR应用提供坚实的基础,了解DME-卤水-油系统的相行为至关重要-对于公开文献中所关注的条件而言,这实际上是不存在的。我们进行实验研究以测量DME在烃相和水相之间的分配。我们还基于实验数据开发了使用三次加缔合(CPA)的PVT模型,以表征DME,水/盐水和碳氢化合物的混合物。最后,我们研究了分配系数对每相进料的依赖性,表明分配系数随烃相中DME摩尔分数的增加而降低,而随盐度的增加而增加。 (C)2016 Elsevier Ltd.保留所有权利。

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