Abstract: With the hydrocarbon generation and expulsion simulation technology of source rock, a series of experiments of oil shale in-situ mining simulation was made under different boundary conditions such as heating temperature, heating rate, constant heating time, and water content. The results indicated that increasing conversion temperature and decreasing heating ramp rate, prolonging constant temperature time were conducive to improve shale oil yield and its quality of oil shale in-situ mining. Fluid pressure decreased shale oil rate, but slightly improved oil quality, but excessive fluid pressure, such as over exploitation layer overburden pressure, will have a destructive effect on surface engineering. High temperature formation water may act as catalyst, reactant and solvent in the reaction, promote non covalent bond fracture, and improve oil yield. Based on the results, a new method was proposed that during the dry distillation conversion process offering additional hydrogen material, or adding soluble catalystsin to the high temperature water, may improve shale oil yield of oil shale in-situ mining.

Key words: oil shale, different boundary conditions, in-situ mining, simulation experiment, shale oil