L Direct distance between the trap and the starting point of hydrocarbon migration below the seal l Power of power-law shape of stringer M Mass of expulsed gas m, n Powers in the self-similar solution p Pressure p H Pressure of the reference point on z-axis Q Gas injection rate R Equilibrium gas concentration in water r Defined power as a function of l s cw Connate water saturation s gr Residual gas saturation t Time T Injection period during the pulse injection t D无量纲的时间U气速/通量U气体速率w水速度的模块W水辅助气体速度X沿密封X D无量纲坐标沿密封无量音坐标沿密封轴与水平轴之间的密封α角βββββββββββ型ββ的电力范围之间的量在水和气体之间
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