The well Longye-1 HF is one of the key exploration wells locating in Wulong syncline structure of southeast Sichuan. Its target stratum is Longmaxi formation of lower silurian. Compared with the fracturing of the shall wells in anticline of Jiaoshiba area in the city called Fuling

the well Longye-1 HF have the characteristics of high fracture pressure

high extension pressure and difficult sand adding. According to the geologic condition of Wulong area

Longmaxi formation has good lamellation development and high quartz content. However

the ground stress difference coefficients are small. In order to stimulate the transform volume of the reservoir

the research were conducted on the fracturing technology of the atmos

pheric shale horizontal wells in Wulong. Through the pumping bridge plug and perforating technology

we selects a mixed fracturing fluid of low damage slick-water and activity glue

and optimizes the construction displacement and fracture parameters. The fracturing construction is divided into 17 segments

and after fracturing

it achieves 6.2×10

4

m

3

/d industrial gas. The results verify the gas bearing properties of the middle-shallow shale reservoir in Wulong block

and the production capacity achieves the breakthrough.