地下存在亲油的岩石——对“地下没有亲油的岩石”一文的不同看法

There Exist Oil-Wet Rocks Underground

李传亮教授认为地下没有亲油岩石,这个观点值得商榷。储集层不管是亲水或是亲油,都不是油气顺利运移到圈闭的必要充分条件,即使岩石亲油,油气在运移途中的散失量相比油气供给量也是微小的,同样可以聚集成藏。油藏压力分布的正常化也不是岩石亲水单方面因素可以唯一确定的。储集层岩石在油气没有进入前的成岩及成岩后作用阶段都是亲水的,但油气聚集成藏后润湿性逐渐转为亲油,这与生产特征没有矛盾之处。

The viewpoint of ＂There is no oil-wet rock underground＂ proposed by Prof. Li Chuanliang is questionable. Reservoir whether wa- ter-wet or oil-wet is not necessary and sufficient condition for hydrocarbon smooth migration into traps. Even if it is oil-wet, the dispersal and loss amount of hydrocarbon is little, compared with its charging amount in the way of migration, so the hydrocarbon can also be migrat- ed and accumulated into a reservoir. Moreover, the normalization of the reservoir pressure distribution may not be determined just by the factor of water-wet rock unilaterally. Reservoir rocks where hydrocarbon has not charged should always be water-wet in the stage of diagen- esis and post-diagenesis, and merely when hydrocarbon accumulation the wettability of reservoir rock may gradually convert to be oil-wet. Such a nature is by no means of contradiction with its production characteristics.