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本文应用大庆油田砂岩岩心,研究不同除油法对孔隙结构的影响.发现岩心经热处理后,渗透率变小,结构系数增大,汞退出效率降低.本文对产生这些变化的原因作了初步分析.
In this paper, the sand core of Daqing oilfield is used to study the influence of different oil removal methods on the pore structure. It is found that the permeability decreases and the structure coefficient increases and the mercury exit efficiency decreases after the core is heat-treated. The reasons for these changes are preliminarily analyzed .