油藏物理学一相对渗透率 That is K K K if there are oil and water in the reservoir because of Ko+Kw<1, Kro+Knv<IThat is 油藏物理学——相对渗透率 K K K i ri  Kro  Krw 1 if there are oil and water in the reservoir , because of Ko+Kw＜1