气藏类型

适合条件

经验公式

废弃相对压力ψ

定容裂缝型

含弱弹性水驱

$P_a/Z_a=\left(0.25~0.05\right)P_i/Z_i$

${\psi }_a=0.05~0.25$

强水驱裂缝型

/

$P_a/Z_a=\left(0.6~0.3\right)P_i/Z_i$

${\psi }_a=0.30~0.60$

定容高渗孔隙型

K > 50 × 10⁻³ μm²

$P_a/Z_a=\left(0.2~0.1\right)P_i/Z_i$

${\psi }_a=0.10~0.20$

定容中渗孔隙型

K = 10~50×10⁻³ μm²

$P_a/Z_a=\left(0.4~0.2\right)P_i/Z_i$

${\psi }_a=0.20~0.40$

定容低渗孔隙型

K = 1~10×10⁻³ μm²

$P_a/Z_a=\left(0.5~0.4\right)P_i/Z_i$

${\psi }_a=0.40~0.50$

定容致密型

K < 1 × 10⁻³ μm²

$P_a/Z_a=\left(0.7~0.5\right)P_i/Z_i$

${\psi }_a=0.50~0.70$