Abstract: This paper presents a new sand fracturing technology of hydraulic jet, which needs fracturing fluids with new special performances, so the fracturing fluid system for the new process was studied in laboratory by optimizing the formula of fracturing fluid system, cross-linking agent composition, crosslinking ratio, and etc. A developed fracturing fluid formula and field application technology meets the new process.The lab performance evaluation shows that the fracturing fluid can meet the requirement for carrying sand after shearing highly fracturing fluid by hydraulic jet layer and sand fracturing. The technology has been successfully applied in Guangan, Hechuan and other blocks of Xujiahe in Sichuan high-angle wells, horizontal well hydraulic fracturing jet layer. The natural gas production increases accumulatively 11.1365×10⁴ m³/d.