受多期构造运动影响,南川地区页岩地质条件复杂、资源禀赋变差,难以实现规模效益开发。为积极推动南川地区页岩气效益开发,坚持推行地质工程一体化、全方位全过程优化的开发理念,围绕“研究部署、井网优化、钻井工程和压裂工程”等方面开展综合研究。坚持地下资源充分动用、地面钻前最优的原则确定钻井平台及井网优化部署;以产能“甜点”为核心优化井位设计,同时应用一体化导向技术,实现精准穿层,提升“甜点”钻遇;以改造缝网复杂程度最大化和产能最大化为目标,优化压裂工艺设计,实现页岩气井效益最大化。基于南川地区页岩气产建实施,形成了南川复杂构造带特点下的“研究部署、设计实施和支撑保障”全过程的一体化模式,实现钻井提速、压裂改造提产,推动南川地区页岩气实现效益开发。

Due to the multi-stage tectonic movement, the geological conditions of shale in Nanchuan are complex and resource endowment is deteriorating, which makes it difficult to realize the scale economy development. In order to actively promote the beneficial development of Nanchuan shale gas, it insists on the development concept of geological engineering integration and all-around whole-process optimization, and carries out comprehensive research on “research deployment, well pattern optimization, drilling engineering and fracturing engineering” and other aspects. According to the principle of fully utilizing underground resources and optimizing before surface drilling, the optimal deployment of drilling platform and well pattern is determined. The well placement design is optimized with productivity sweet spot as the core, meanwhile, the integrated steering technology is applied to achieve precise penetration and improve sweet spot penetration. Aiming at maximizing the complexity of fracture network and productivity, the fracturing process design is optimized to maximize the benefits of shale gas wells. Based on the production, construction and implementation of shale gas in Nanchuan area, an integrated model of the whole process of “research, deployment, design, implementation and support” has been formed under the characteristics of Nanchuan complex structural belt, which can improve the drilling speed and fracturing production, and promote the beneficial development of shale gas in Nanchuan area.