加拿大M致密砂岩气藏高效开发技术

High-Efficient Development Technologies for the M Tight Sandstone Gas Reservoir in Canada

针对低气价下加拿大M致密砂岩气藏如何实现经济高效开发的问题,开展了开发层系划分、钻井完井施工参数优化、优快钻井完井施工及压后返排和井工厂开发等方面的技术攻关,形成了地质工程一体化的巨厚砂岩储层开发层系划分技术、机器学习大数据分析钻井完井施工参数匹配技术、水平井低成本优快钻井技术、闷井返排技术及井工厂立体开发技术等关键技术。现场应用后,M致密砂岩气藏钻井完井施工效率大幅提升,钻井完井成本显著降低,单井产能显著提升,实现了效率增、成本降的良好局面。M致密砂岩气藏的成功开发,为我国非常规气藏高效开发提供了技术借鉴。

In order to realize the economical and high-efficient development of the M tight sandstone gas reservoir in Canada, technical studies and innovations about layer subdivision, optimization of operation parameters during drilling and completion, optimal and fast drilling, post-frac flowback, and multi-well pad development were conducted.In this way, the key technologies integrated geology and engineering were formed, including a layer subdivision technology of a super thick sandstone reservoir, a match technology of operation parameters during drilling and completion by machine learning and big data analysis, optimal and fast drilling of horizontal wells with low costs, wellsoaking flowback, as well as 3 D multi-well pad development, etc. After field application, these technologies sharply increased the drilling and completion efficiency with evident decreased development costs. Further, the single well witnessed a remarkable increase in productivity, and achieved significantly increased efficiency and reduced costs. The successful development of the M tight sandstone gas reservoir has provided a technical reference for high-efficient development of unconventional reservoirs in China.