摘要
通过对南海某油田岩心进行的油基泥浆污染的室内模拟试验，证实油基泥浆不但改变岩心的润湿性，使其变成强亲油，而且还造成油基泥浆中的固体颗粒对岩石孔隙的堵塞，结果使油相有效渗透率和绝对渗透率大幅度下降。岩心被油基泥浆损害后，凭常规的注水冲刷手段，渗透率很难恢复到原来的水平。
Laboratory simulated experiments on damages of oil base mud to cores in a Nan Hai oil field demon-strated that oil base mud not only changes the wettibility of cores to make them strongly oil wetting,but also plugs pores in cores with solid particles in oil base mud,which results in large decrease in effective oil permeability and absolute permeability.Permeabilities of oil base mud damaged cores could hardly be restored to the origional values by conventional water injection scouring.
出处
《中国海上油气（地质）》
1991年第4期57-62,共6页
China Offshore Oil and Gas(Geology)
