The third type has doubleporositysystem, and the build-up curve has a stepwise form.
缝洞孔复合型具有双重孔隙介质的特点,压力恢复曲线具多台阶型。
2
Budart Group of Sudert district in Hailaer Basin is a reservoir that has very low porosity, very low permeability, double pore system and it is rich in fracture.