国内外页岩油储层改造技术现状及发展建议

The Current Status and Development Suggestions for Shale Oil Reservoir Stimulation at Home and Abroad

陈作 刘红磊 李英杰 沈子齐 许国庆

CHEN Zuo LIU Honglei LI Yingjie SHEN Ziqi XU Guoqing

中国石化石油工程技术研究院，北京 102206 中国石油集团海洋工程有限公司，北京 100176

Sinopec Reasearch Institue of Petrolum Engineering, Beijing, 102206 CNPC Offshore Engineering Company Limited, Beijing, 100176

北美海相页岩油采用长水平段水平井密切割体积压裂技术和“工厂化”施工技术等手段，已获得规模化商业开发，而国内陆相页岩油勘探开发起步晚，总体处于试验与示范阶段。为促进我国页岩油的勘探开发进程和页岩油开发技术的发展，总结分析了北美海相页岩油和国内陆相页岩油储层的基本特征、储层改造技术现状和特点，从中得到了诸多启示，从而针对国内陆相中高成熟度页岩油储层的特性，提出了强化基础与机理研究、进行多岩性偏塑性储层穿层压裂技术及复杂缝压裂技术攻关、研发多功能压裂液和压力敏感智能支撑剂、研究排采和CO2注采技术及进行压–驱–采一体化攻关的建议，以期提高我国陆相中高成熟度页岩油的开发效果。

North American marine shale oil has achieved large-scale commercial development by means of volumetric fracturing with tight spacing in horizontal wells with long horizontal sections and “factory-like” construction technologies, etc. However, the exploration and production of continental shale oil in China started late and are still generally in the stage of experiment and demonstration. To accelerate the exploration and production process of shale oil in China and improve relevant technologies, basic properties of North American marine shale oil reservoirs and China’s continental shale oil reservoirs, as well as the technical status and characteristics of reservoir stimulation applied on those reservoirs were summarized and analyzed, resulting in many new insights. Given the unique properties of continental shale oil reservoirs with medium-high maturity in China, suggestions that would result in better production results were made for such reservoirs in China. The suggestions focused on strengthening basic and mechanism research, addressing technical problems of cross layer fracturing in multi-lithology plastic reservoirs and complex fracture networks based fracturing, developing multi-functional fracturing fluid and pressure-sensitive intelligent proppant, studying drainage and CO2 injection and production technology, and tackling key problems of fracturing-flooding-producing integration.

中国石化科技攻关项目“盐间页岩油增产工艺及试采技术”（编号：P19013）资助

https://doi.org/10.11911/syztjs.2021081