「油藏物理学一油气系统的溶解与分离 set phase state equation 866666 a. P,T 1 moL Ng Yi 动平衡 NL Xi when P and T attain balance for 1mol of oil,balance equation of i component is Ng+N=1 (1) Nix+Ngyi=ni (2) Ki=yi/x (3)set phase state equation 油藏物理学——油气系统的溶解与分离 a. when P and T attain balance for 1mol of oil, balance equation of i component is i i i L i g i i g L K y x N x N y n N N / 1 (1) (2) (3)