Dynamic filtration instrument of fracture acidizing working solution

A dynamic filtration instrument of fracture acidizing working solution relates to the field of petroleum industry and comprises an injecting system (1), a core holder (2), an annular pressure tracking pump (3), a return pressure controlling system (4) and a metering system (5), wherein the injecting system (1) is connected with the core holder (2), the core holder (2) is connected with the annular pressure tracking pump (3), the annular pressure tracking pump (3) is connected with the return pressure controlling system (4), and the return pressure controlling system (4) is connected with the metering system (5). The dynamic filtration instrument can accurately test permeability and permeability gradient of fluid, and better research the evaluation of formation sensitivity, the oil production technology and the improvement on recovery ration; and the dynamic filtration instrument has the advantages of reasonable structure, attractive and elegant appearance, convenient operation and durability.