Rhythm intenal sand body and uncontinuous thin teparate bedding lead to the differ-ence of permeabitity inside reserwir of sand rock,thus affect its intraformational anisotropic propetty.

• 砂体的韵律性和砂岩储层层内不连续薄隔层的存在导致砂岩储层层内渗透率差异，从而影响其层内非均质性。