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本文简述冀中碳酸盐岩储层的基本特性及其注水采油的主要机理,进而分析根据这种油藏特性所进行的一系列室内注水采油实验的结果,包括裂缝系统和致密岩块的注水采油特性。最后,结合龙虎庄油田矿场间歇采油实验结果的分析,阐述间歇注水采油的机理,提出在冀中碳酸盐岩油藏开展间歇注水采油提高采收率的矿场实验的建议。
This paper briefly describes the basic characteristics of Jizhong carbonate reservoirs and the main mechanism of waterflooding and oil recovery, and then analyzes the results of a series of laboratory experiments of oil recovery based on the characteristics of this reservoir, including waterflooding of fractured systems and tight blocks characteristic. Finally, combined with the analysis of the experimental results of intermittent oil recovery in Longhuzhuang Oilfield, the mechanism of intermittent injection was expounded, and the suggestion was put forward that the experiment of intermittent water injection and recovery in the Jizhong carbonate reservoir should be conducted.