石油实验地质Issue(6)：787-791,5.DOI:10.11781/sysydz201406787
基于CO2置换的低渗透储层岩心饱和方法研究
Saturation method of low-permeability reservoir cores based on CO2 displacement
摘要
Abstract
In order to improve the saturation of low⁃permeability reservoir core, the saturation method and experi⁃mental device were developed based on CO2 displacement of absorbed gas. The saturation effect was investigated by the measurement of saturated porosity with the employment of 26 cores from low⁃permeability reservoirs. It was demonstrated that saturation effect was significantly improved and was close to complete saturation because the sat⁃urated porosity of the new saturation method was 0. 54% on average larger than that of the traditional saturation method and 0.14% on average smaller than helium porosity. Also, it was illustrated that the new saturation method had highly pertinence in reducing the effect of absorbed gas in tight cores and was able to be widely used for the saturation of low⁃permeability reservoir cores because the relative increment of saturated porosity by the new method increased positively with shale content and negatively with average grain size, helium porosity and permeability.关键词
CO2置换/低渗透储层/岩心饱和/吸附气/平均粒径/氦孔隙度/泥质含量Key words
CO2 displacement/low-permeability reservoir/core saturation/absorbed gas/average grain size/helium porosity/shale content分类
能源科技引用本文复制引用
韩学辉,李峰弼,戴诗华,张娟娟,唐俊,王雪亮,王洪亮..基于CO2置换的低渗透储层岩心饱和方法研究[J].石油实验地质,2014,(6):787-791,5.基金项目
国家油气专项（2011ZX05009－003）资助。 （）
