油藏多孔介质中蒸汽流动与传热机理研究

The mechanism of steam flow and heat transfer in reservoir porous media

注蒸汽方法开采稠油与普通开采方式相比,过程工艺复杂、能耗高,尚有一些基础理论和技术应用问题亟待解决,如强化蒸汽在油藏多孔介质内的流动与传热.根据蒸汽在稠油油藏中的流动与传热进展,研究包括多维、多相、超常参数多孔介质内的流动与传热传质复杂热物理问题,以推动多孔介质内多相流超常参数的传热与传质研究,为科学制订开采方案、提高油藏开采效果、降低开采成本,提供理论指导及技术支撑.

Although the steam injection method for recovering heavy crude has been carried out and applied over 20 years,compared with ordinary petroleum recovery,its recovery process technology is complex,the energy consumption is high,and some basic theories and technical application problems remain to be solved,strengthening steam flow in reservoir porous medium and heat transfer mass transfer is one of them.This project will point to some basic questions to carry on the innovation and exploring research,including the heat-hydraulic-mechanical-mass transfer coupling model of steam flow and phase change process in reservoir porous medium under high temperature and high pressure,the reservoir heat-hydraulic-mechanical constitutive relationship,the thermodynamic system quantitative model based on the time and the spatial criterion,the multi-criterion exploration for flow and heat transfer process in reservoir porous medium,the numerical simulation and the correlative experiment study.This study is a complex thermophysical question including multi-dimensional,multiphase,the flow in the superior parameter porous medium and heat transfer mass transfer.The content is of important theoretical significance and academic value,and its results will impel the heat transfer and the mass transfer research of multiphase flow superior parameter in porous medium to develop forward.Simultaneously,the research results obtained will provide the theory instruction and the technical support to make development plan,enhance the reservoir mining effect and reduce the mining cost for the oil field.