This article analyzes the influence of different branch number, branch length, branch angle on the productivity of the herringbone well. It also summarizes the strongest influence parameters and the weakest influence parameters. Provide theoretical guidance for the formulation of herringbone well development plan. The results show that the maximum effect parameter is branch length, then branch number and branch angle the weakest.

Based on the mixed finite element method ，simulated the horizontal well fracturing complex artificial fracture. The article use line elements to describe the horizontal well bore, arbitrary triangle elements to describe the formation. To influence the fracturing horizontal well productivity of artificial fracture parameters are optimized, including the number and fracture length. For different fracture parameters of production dynamic curve carries on the contrast analysis, obtained the different fracture parameters of pressure profile and saturation profile. Research shows that the crack amount and crack length of horizontal well fracturing production dynamic all have obvious influence, but not the bigger the better, there exists optimal value.