稠油线性火驱温度场数值模拟

Numerical Simulation of Temperature Field in Heavy Oil Linear In-situ Combustion

运用Spaceclaim建立稠油线性火驱温度场分布的物理模型,用ICEM对物理模型进行网格划分,结合控制方程和能量方程,应用Fluent对离散化模型进行求解。数值模拟了孔隙率、注入井压力、动力黏度对稠油线性火驱温度场的影响。结果表明:储层温度梯度随孔隙率的增大而增大;储层温度较低时,注入压力对整个区块温度场的分布影响显著;热量和温度的传递速率随油相动力黏度增大而减小。上述模拟结果可为稠油线性火驱的布井提供理论依据,提高稠油线性火驱的生产效率和经济效益。

The physical model of temperature field distribution in heavy oil linear in-situ combustion was established with Spaceclaim and meshed with ICEM,discrete physical model was calculated with Fluent by combining control equation and energy equation.The effect of porosity,pressure of injection well and dynamic viscosity on the temperature field of heavy oil linear in-situ combustion was numerically simulated.The numerical simulation results showed that the temperature gradient increased with the increasing of porosity.Injection pressure had significant effect on the temperature field distribution for the whole block when the temperature was lower.The transfer rate of heat and temperature decreased with the increase of oil dynamic viscosity.The simulation results mentioned above can provide theoretical basis for well arrangement in the heavy oil linear in-situ combustion,and the production efficiency and economic benefit of the heavy oil linear in-situ combustion can be improved.