Abstract: Fuling shale gas field is different from the shale gas zones in the North America in terms of surface and underground geological conditions. And the key to the economic and efficient development of shale gas in Fuling shale gas field is how to organize and conduct multi-well fracturing engineering design and field construction in the mountainous environment. The overall parameter design technology and operation mode of zipper fracturing based on the concept of geology-engineering integration was established in the pattern of efficient productivity construction according to the construction demand of Fuling national shale gas demonstration area. To increase the shale gas well productivity overall and satisfy the operational demand and characteristics of "well factory" in the mountain areas of Jiaoshiba block, the technological parameters were optimized from the aspects of prefrac key geological factor identification and analysis, areal-lateral-interval multiple level engineering parameter design, dynamic adjustment of field construction, etc, and then the overall parameter design technology of zipper fracturing with three-dimension cross fracture arrangement as the core was innovatively developed. And thus, geology-engineering integration and single well-well group batch construction are realized for the shale gas development in Jiaoshiba block. It was practically applied to over 4000 intervals in more 200 wells cumulatively. It plays a remarkable role in increasing the production rate of horizontal well group, improving the fracturing time efficiency overall and reducing the comprehensive cost. And it provides the powerful technical support for the fast and efficient productivity construction of 50×10⁸m³ in the first stage of Fuling shale gas field.

Key words: Jiaoshiba, shale gas, geology-engineering integration, zipper fracturing, complex fracture, multiple level