关键词: 油页岩, 原位电法加热开发技术, 热解, 渗透性, 三维有限元法, 数值分析

Abstract: According to the properties of oil shale,the in-situ conversion process(ICP) technology for oil shale development was proposed.This technology has the advantages of low cost and less pollution which is different from the traditional technology for oil shale development.The weightlessness of high-temperature dry distillation and thermal cracking characteristics of oil shale showed that the main pyrolysis zone of oil shale ranged from 350℃ to 500℃.The weightlessness accounts for 15% of the total quality.The oil shale after high-temperature pyrolysis produced lots of pore and fracture,which could effectively improve the permeability of oil shale and create good conditions for output of oil and gas.The energy conservation equation considering the chemical reaction heat was established on the basis of the ICP technology.The numerical simulation of oil shale development using ICP technology was carried out with 3D finite element method.The variation laws of temperature changing with time and pyrolysis area of oil shale under ground were obtained.The outputs of oil and gas were calculated in the small scale oil shale development area using ICP technology.

Key words: oil shale, in-situ conversion process technology, pyrolysis, permeability, 3D finite element method, numerical analysis