The normal pressure shale gas reservoir in Southeastern Chongqing is characterized by large horizontal stress difference and high angle fracture development

so that it is difficult to form the complex fracture network and further realize the economic development. In order to solve these problems

key technologies of fracturing in normal pressure shale gas reservoir is studied. Based on the analysis of the fracturing technology of normal pressure shale gas horizontal wells in the Pengshui block

and by drawing on the successful experience of foreign marine shale gas fracturing

the scale of fracturing transformation

continuous sanding process and interim period have been continuously explored and optimized to improve the complexity of fractures and

increase the volume of single section reconstruction to form a large-scale complex fracture network. Good results have been achieved in the current application in well-LY2HF and well-JY10HF of daily gas production of 9.6×10

4

m

3

and 16.7×10

4

m

3

respectively

thus realizing the economic development of normal pressure shale gas.