致密油藏渗流机理及开发方式研究进展

随着非常规能源开发越来越受到人们的重视,如何开发致密油藏成为学者们关注的话题。基于对加拿大致密D油藏研究和文献调研,提出了致密油藏的特点及与常规油藏的区别,分析了致密油藏微观孔隙结构和渗流机理,综述了致密油藏提高采收率和补充地层能量的方法,包括水平井多段压裂技术、体积压裂技术、CO2混相驱和水气交替注入开发技术等。总结出致密油藏在开发过程中应注意的问题及下一步发展方向,为我国致密油藏的开发提供借鉴价值。

Review on Seepage Mechanics and Development Techniques of Tight Oil Reservoir

Since there is more and more attention to the unconventional energy development, the methods to develop the tight oil become a topic concern of scholars. Based on the Canadian tight D reservoir studies and the literature research, in this paper, the author proposed the difference between the tight oil and the conventional oil, analyzed the tight oil microscopic pore structure and percolation mechanism, and comprehensively described the methods of tight oil reservoir enhancing oil recovery and energy supplement, which included the multi-stage horizontal well fracturing technology, the volume fracturing technology, the CO2 miscible flooding and WAG technology. In addition, the precautions during the tight reservoir development process and the future development direction were also summed up by the writer. This paper has a reference value for the tight oil reservoir development of China.