In order to study the seepage law and influential factors of flow in double porosity medium in the pore-fractured low-permeability reservoir

the dual-media cross-flow mathematical model is established and its solution is given. By numerical solution

the pressure dynamic characteristics and effects of storage coefficient and interporosity flow coefficient on pressure response are researched. By pressure-sensibility experiment

the effect of effective stress on percolation ability of double porosity medium low-permeability reservoir is studied. The study shows that the larger storage coefficient is and the later happening interporosity flow time is

the smaller interporosity flow coefficient is the larger interporosity flow pressure is. Permeability and porosity decrease when effective stress increases

which changes storage coefficient and interporosity flow coefficient and effects pressure dynamic characteristics. So keeping pressure and protecting reservoir are important for developing the pore-fractured low-permeability reservoir.