陆相页岩油规模效益建产探索与实践

Practice of Building Production of Land-Phase Shale Oil with Scale Efficiency

陆相页岩油构造复杂,甜点分布不均,水平段打长难度大,单井产量低,开发效益较差等现实情况,已对企业效益、国家能源安全构成挑战。因此,如何实现陆相页岩油效益建产,促进油田企业降本增效,保障国家能源安全成为本研究的重点。研究以大港沧东凹陷孔二段效益开发为例,总结陆相页岩油规模效益建产探索与实践中的问题,形成了资源评价、甜点分布、水平段钻井压裂以及组织模式优化等现实做法。该成果使沧东凹陷孔二段陆相页岩油为有效实现规模效益开发,有力推进规模建产目标完成提供支撑,为同类油藏开发提供借鉴。

The realities of complex land-phase shale oil structure,uneven distribution of desserts,difficulty in hitting long horizontal sections,low single-well production,and poor development benefits have posed challenges to corporate benefits and national energy security.Therefore,how to achieve the land-phase shale oil benefit to build production,promote the oilfield enterprises to reduce costs and increase efficiency,and guarantee the national energy security has become the focus of this study.The study takes the beneficial development of hole 2 section of Cangdong Depression in Dagang as an example,summarises the problems in the exploration and practice of beneficial production of land-phase shale oil scale,and forms realistic practices such as resource evaluation,sweet spot distribution,horizontal section drlling and fracturing,and organisational mode optimisation.The results enable the onshore shale oil in the hole two section of Cangdong Depression to provide support for the effective realisation of scale-effective development,strongly promote the completion of the scale production target,and provide reference for the development of similar reservoirs.