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根据岩心压汞资料,获得砾岩储集层渗透率与孔隙中值半径的关系,结合滤膜实验建立的不同聚合物相对分子质量与可通过孔隙尺寸的关系,建立了砾岩油藏驱油聚合物相对分子质量的选择方法。利用此方法研究后得出:七东1区克下组油藏驱油适选聚合物相对分子质量为2500×104的聚合物,该方法对其他砾岩油藏驱油聚合物相对分子质量的选择具有指导意义。
Based on the mercury intrusion data, the relationship between permeability of conglomerate reservoirs and median pore radius was obtained. Based on the relationship between the relative molecular mass of different polymers established by the membrane experiments and the pore size, the oil displacement of conglomerate reservoir Selection of polymer relative molecular mass. Using this method, it is concluded that the polymer with the relative molecular mass of 2500 × 104, which is the suitable polymer for oil displacement of Kejiashan oil reservoir in Qidong-1 area, is of great value for the relative molecular mass of displacing polymer in other conglomerate reservoirs Choice is instructive.