长期冲刷条件下的储层物性参数变化规律研究

Changing Rules of Reservoir Physical Parameters under the Condition of Long-term Flooding

注水开发是我国大多数油田提高采收率的主要措施。注水冲刷对储层的物性参数有较大的影响。从室内实验出发,通过长时间的注水驱替和白油驱替,从对驱替前后所测岩心的渗透率、孔隙度和质量分析可知,对于砂岩岩心,在注水或注白油驱替后,渗透率降低、孔隙度和质量变化不大。

Water injection is the main method to enhance oil recovery in majority oilfields of China. Water flooding has great impact on physical parameters of reservoir. Based on the laboratory experiment, through the water flooding and white oil displacement with long time, it shall measure the core permeability, porosity and quality before and after displacement. The analysis shows that under water flooding and white oil injection, the permeability decrease, the porosity and quality of the sandstone cores have a little change.