长岩心CO2吞吐采油物理模拟实验研究——以靖边油田墩洼油区延安组储层为例
Petroleum Geology and Engineering(2015)
Abstract
针对靖边油田墩洼油区天然能量不足、水资源匮乏、注水困难、产量递减较快的情况,利用长岩心吞吐实验装置对长岩心CO2吞吐采油进行了室内模拟试验.结果表明,周期CO2注入量越大,采收率越大;随着吞吐周期的增加,采收率、周期累计产油量下降,其中采收率的贡献主要在前2个周期;靖边油田墩洼油区CO2吞吐采油技术可行,吞吐过程中交替注入CO2、N2则更为经济、有效.
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