发展绿色高效的地下原位转化开采技术已成为当前社会对油页岩等低品位油气资源开发的新要求，注蒸汽加热是一种有效的油页岩原位开采方法，但仍存在热解温度过高和热解效率较低的问题。为此，本项目提出油页岩催化剂辅助注蒸汽原位开采新方法，并系统开展原位催化热解开采机理研究。利用催化化学分析表征手段，筛选构建适应于原位开采复杂条件、满足技术要求的高效耐温油页岩热解催化剂体系；利用自主设计构建的油页岩压裂裂缝模型、孔隙-裂隙微观可视化模型和微流控芯片模型以及高温高压蒸汽热解模拟实验装置并结合室内评价实验，阐明复杂多因素条件下油页岩催化剂辅助蒸汽原位催化热解开采的机理及其影响机制；采用室内高温高压岩心物理模拟技术，优化相关技术参数，建立油页岩催化剂辅助注蒸汽原位开采的调控方法，为油页岩催化剂辅助注蒸汽原位开采方法的工业化应用奠定理论基础，促进注热原位开采技术在油页岩资源绿色高效开发中的应用基础研究。

The development of green and efficient in-situ conversion and extraction technologies has become a new requirement for the exploitation of low-grade oil and gas resources such as oil shale. Steam heating has proved to be an effective method for the in-situ extraction of oil shale, but there still exists problems of high pyrolysis temperature and low pyrolysis efficiency during the in-situ conversion processing of oil shale via steam heating. In the current project, a new method, i.e., in-situ extraction of oil shale via catalyst assisted steam injection is proposed, and the catalytic pyrolysis mechanisms for the in-situ extraction of oil shale will be investigated systematically. First, by the analysis and characterization methods of catalytic chemistry, the oil shale pyrolysis catalyst systems with high efficiency and heat resistance will be established. Then using the self-designed fracturing fracture model, microscopic visualization pore-fissure model and microfluidic chip model, high-temperature and high-pressure steam pyrolysis experimental apparatus and combined with the laboratory experiments, the catalytic pyrolysis mechanisms for the in-situ extraction of oil shale and their influencing mechanisms under complex multi-factor conditions will be elucidated. Through laboratory core physical simulation technology under high-temperature and high-pressure conditions, the related technical parameters will be optimized. The aim is to build the regulation method for the in-situ extraction of oil shale via catalyst assisted steam injection. The research results will lay a theoretical foundation for the industrial application of the in-situ extraction of oil shale via catalyst assisted steam injection method, and thus promote the basic research for the application of in-situ heat injection extraction technology in the green and efficient exploitation of oil shale resources.