Using the data of Tahe fractured reservoir, the effects of natural fracture, artificial fracture and macro-fracture on post-frac productivity show that the permeability of the natural fracture is one important factor affecting post-frac productivity.

Natural fracture and artificial fracture are all controlled by stress field.

Model of artificial fracture induced stress was built based on the damage theory.

In present, it is not thorough to study the complex hydraulic fracture productionperformance and influence of correlation parameter.

According to known parameters, such as the reservoir permeability, fluid viscosity, well pattern, well spacing, hydraulic fracture length and so on, the use coefficient of the reservoir can be obtained quickly.

The article introduces the supernormal fracturing technology used for increasing fracture width from three aspects which are the affecting factors of created fracture conductivity,the theory of increasing propped fracture width and the fi.

Thus,the base is formed for fracturing fracture extendly orientation prediction and proper well pattern modification of oilfield development, also provided theoritical basis for high efficient and reasonable developm.

The typical curves of multi-fracturing wells with dual media could be divided into 5 parts; such as linear flow section of fracturing fractures, early transition section, radial-flow section of fracturing in external area and channeling transition section between the external fractures and matrix and external pseudo-radial flow section.

The reason for ineffective fracture in Shanian area of Jiangsu oilfield was analysed.

The blockages can be removed in the fracture,which results in the recovery of diverting capacity,the enhancement of well productivity and great stimulation effect.