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.