Through analyzing the factors of influencing the ability of mudstone caprock stopping gasdiffusion, we think that the diffusion velocity is an important parameter for evaluating the ability.

• 通过对影响泥质岩盖层阻止天然气扩散能力因素的分析，认为扩散速度是评价泥质岩盖层自身阻止天然气扩散能力的重要参数。