Review of the current status of molten salt thermal energy storage，concrete and magnesia brick thermal energy storage，and fluidized solid particle thermal energy storage revealed that molten salt thermal energy storage has defects such as low energy density and high pipeline corrosion rates，while concrete and magnesia brick thermal storage suffers from low contact surface heat transfer efficiency. The basic situation of thermal storage was analyzed for an oil field，and a new technical route based on solid particle electric thermal storage was proposed，given the bottlenecks of frequently-used molten salt thermal storage such as high solidification risks，severe corrosion，and high costs. In this technical proposal，sand proppants for fracturing with particle sizes of 0.3~0.7 mm were used as the thermal storage media，and the co-production of steam through efficient electric heating and gravity flow heat exchange was experimentally investigated，which determined a suitable electric thermal conversion efficiency of 85% at an unloading frequency of 2 Hz. Compared with molten salt systems，this technology breaks through the upper temperature limit，avoids the risk of phase transformation （solidification） and reduces the corrosion rate to almost zero. Calculation showed that the payback period of a double-tank flowing solid particle steam production system with a steam output of 100 t/h is about 11.61 years，and the levelized steam costs over a 30-year life cycle is about 172.36 CNY/ton.

Xinjiang Jimsar Shale Oil Demonstration Area is the first national-level continental shale oil demonstration project，located in Jimsar Sag，Junggar Basin，China. The target layer is Permian Lucaogou Formation. After ten years of exploration and development，with the obtained abundant production and geological data of the reservoir and deepened geological understanding，the corresponding exploration and development technologies become fairly mature. The fine 3D seismic survey with broadband excitation and well-surface integrated acquisition improves the geological understanding. The fine characterization and classification evaluation techniques of shale oil sweet spots provide a basis for development deployment. The comprehensive mud logging technology of "gold targets" improves the target-layer drilling ratio that is fundamental for delivering high stable production from horizontal wells. The customized fracturing technology of "complex fracture networks" provides an effective means for the efficient development of shale oil. The production capacity of horizontal wells is fully exploited by the flowback and production scheme optimization technique. The marketization has greatly reduced costs and improved both quality and efficiency. The cost-effective development technology system of Jimsar shale oil provides references for the efficient exploration and development of shale oil in China.