Based on the characteristics of loose sandstone reservoirs,artificial compaction of rock plates was used to simulate loose sandstone res-ervoirs and static filtration experiments were conducted to study the effects of pressure difference and permeability within fractures on the cumu-lative fluid loss and filtration coefficient.It tested the filtration performance of 100 mD,1500mD,and 3000mD simulated rock slabs under pres-sure differential conditions of 0.5MPa-6MPa,respectively.The results showed that the cumulative filtrate loss was controlled by the pressure difference and permeability within the fracture,and the filtration coefficient was controlled by the pressure difference within the fracture.
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