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化工学报  2015 

高矿化度油气藏流体相平衡的模型化研究进展

DOI: 10.11949/j.issn.0438-1157.20150326, PP. 4297-4303

Keywords: 油气,,沉淀,相平衡,模型

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Abstract:

深层油气资源开发面临高温、高压和高矿化度等复杂地质环境。地层中自然存在高浓度的盐水,在油水被采出的过程中,随着温度、压力和油水中溶解气体量的变化,盐类在储层中或在井筒中的沉淀所造成的储层伤害或井筒堵塞等问题是导致油气采收率降低的重要因素。目前,能描述高压高矿化度油气藏流体盐的沉淀问题的相平衡模型尚处于开发之中,采用电解质溶液基团贡献的活度因子模型来改进状态方程的混合规则是解决这一问题的途径之一。

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