页岩气压裂技术现状及发展方向

Technical advance and development direction of shale gas fracturing

页岩气分布广泛,开发潜力巨大。然而,由于开采难度大,在大部分情况下,需要采取有效的压裂增产措施。经过多年的研究与实践,国外在页岩气压裂方面取得了巨大进步,形成了以水平井分段压裂为主体的一系列工艺技术。文中回顾了北美地区页岩气井压裂的发展历程,重点介绍了压裂地质特征评价技术、压裂施工工艺以及常用的压裂液体系,并结合技术现状展望了未来页岩气压裂的发展方向。

Shale gas distributes widely with great development potential,however,because of the difficulty of exploitation,most of wells need to take effective measures to increase production.After many years of development,great progress has been made for shale gas fracturing,and a series of technologies are formed.Horizontal well staged fracturing is the main technology of these technologies.In this paper,the development process of shale gas fracturing technology is reviewed; the geological characteristics of fracturing technology assessment,fracturing technique,and fracturing fluid are introduced,the future development direction of shale gas fracturing based on the latest technical advance is prospected.