Numerical Simulation of In-situ Oil Shale Extraction via Electrical Resistance Heating

Abstract

Conventional heating methods for oil shale extraction are limited by restricted heating ranges and uneven temperature distribution. This study explores the feasibility of applying electrical resistance heating to oil shale production. The in-situ extraction process involves complex chemical reactions, multiphase flow, and pore evolution. To account for these factors, we developed a mathematical model that integrates the electric field, heat transfer, chemical reactions, and mass transfer. This model simulates the distribution of electrical energy and temperature within the formation, as well as kerogen decomposition and production efficiency under electric heating conditions. The results show that electrical resistance heating provides a more uniform temperature distribution, making it an effective method for oil shale extraction. Moreover, the numerical model serves as a valuable tool for evaluating and optimizing production strategies using this approach.