Application of stimulated reservoir volume to horizontal wells in Sulige gas field——A case study in Su53 block

In recent years, the stimulated reservoir volume becomes one of key transformation technologies for unconventional gas reservior. Sulige gas field is a tight sandstone gas reservoir. In order to realize high effective development for horizontal well and improve ultimate recovery of the gas reservoir, based on basic geological conditions for stimulated reservoir volume, the applicability of stimulated reservoir volume was analyzed for horizontal well in Su53 block of Sulige gas field. Meanwhile, different fracturing transformation ways used in horizontal wells were contrasted by numerical simulation method. There were two results: firstly, the main characteristics of the reservoir were low permeability, microfracture, high quartz content and so on, which are main reservoir conditions for stimulated reservoir volume. Secondly, the result of numerical simulation shows that the effect of stimulated reservoir volume was better than normal fracture. In addition, this paper analyzed the stimulated reservoir volume effect of five horizontal wells in 2012 by fracture monitoring technique, namely FAST software and TOPAZE software. The result showed that fracture parameters of stimulated reservoir volume were better than normal fracture. All horizontal wells were first class wells, whose average daily production was 12×10⁴ m³/d in the early days; the average capacity of open-flow was 77.9×10⁴ m³/d, and average dynamic reserve was 1.75×10⁸ m³.