中国东部陆相断陷盆地页岩油开发理论认识与技术实践——以济阳页岩油为例  

Theoretical understanding and technical practice of shale oil development in continental faulted basins in eastern China: A case study of Jiyang shale oil

作　　者：杨勇[1,2] 张世明 吕琦 孙志刚 蒋龙 孙红霞[2,3] 刘祖鹏 吕晶 邢祥东[2,3] 倪良田 YANG Yong;ZHANG Shiming;LüQi;SUN Zhigang;JIANG Long;SUN Hongxia;LIU Zupeng;LüJing;XING Xiangdong;NI Liangtian(Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257000,China;State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development,Beijing City,100000,China;Exploration and Development Research Institute,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257015,China)

机构地区：[1]中国石化胜利油田分公司,山东东营257000 [2]页岩油气富集机理与高效开发全国重点实验室,北京100000 [3]中国石化胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《油气地质与采收率》2024年第5期1-15,共15页Petroleum Geology and Recovery Efficiency

基　　金：中国石化重点科技攻关项目“页岩油效益开发优化关键技术研究”(P24026)。

摘　　要：以济阳页岩油为代表的中国东部陆相断陷盆地页岩油取得产能突破,但埋藏深、厚度大、成熟度低,地层温度高、压力大,原油流动能力差的特点,使其实现高产稳产面临巨大挑战。基于万米岩心及90余口水平井生产实践,深化发展了“储-缝-压”三元储渗理论,以此为指导形成了页岩油开发甜点立体评价、立体开发优化设计、立体均衡压裂等济阳页岩油开发关键技术体系。理论研究和实践表明:孔隙和多尺度、多类型发育的微缝组成“双储”系统,控制着储集空间及油气富集规律,是高产稳产的物质基础;支撑缝与激活缝耦合形成跨纳米-厘米尺度的“双缝”系统,具有梯级启动特征,是高产稳产的渗流路径;地层保压性好的前提下,压裂增能可有效提高孔缝的渗流能力、增加渗吸置换效率,同时精细控压实现能场协同耦合,可进一步释放页岩油藏产能,保压增压“双压”协同是高产稳产的能量保障;以三元储渗理论为指导形成的开发关键技术体系为多洼陷多层系产能突破提供了有效的技术支撑,对促进中国东部陆相断陷盆地页岩油规模效益开发具有重要意义。The shale oil in the continental faulted basins in eastern China,represented by Jiyang shale oil,has made a breakthrough in production capacity.However,Jiyang shale oil faces great challenges in achieving high and stable production due to the large burial depth and thickness,low maturity,high formation temperature and pressure,and poor oil flow capacity.Based on the produc-tion practice of more than 90 horizontal wells and 10000-meter cores,the ternary-element storage and flow theory of“storage,frac-ture,and pressure”was deepened,and the key technology system of Jiyang shale oil development,such as three-dimensional fine evaluation of sweet spots of shale oil development,policy optimization for three-dimensional development technology,and three-dimensional balanced fracturing technology,was formed under the guidance of the theory.Theoretical research and practice show that pores and multi-scale and multi-type micro-fractures constitute a double reservoir system,which is the material basis for high and stable production and controls the reservoir space and the law of oil and gas accumulation.The support fractures and the hydrau-lic fractures are coupled to form a double fracture system with a scale of nanometer to centimeter.It has the characteristics of a cas-cade start-up and is the flow path of high and stable production.Energy increase by fracturing can effectively improve the flow ca-pacity of pores and increase the imbibition displacement efficiency under the premise of good formation pressure retention.At the same time,fine pressure control can realize collaborative coupling of energy fields,which can further release the production capacity of shale oil reservoirs.The double pressure coordination of pressure retention and pressurization is the energy guarantee for high and stable production.The key development technology system guided by the theory of ternary-element storage and flow provides effec-tive technical support for the production capacity breakthrough of multi-sag multilayer systems,which is o

关 键 词：断陷盆地 济阳页岩油 三元储渗理论 甜点评价 开发优化 均衡压裂 

分 类 号：TE132.8[石油与天然气工程—油气勘探]