多元流体油藏传热计算新模型

依据Bear提出的表征单元体概念，对含有多元流体的油层热量传递情况进行了计算，采用“三箱”分析方法，对油藏单元体的热量传递情况进行了简化。针对含多相流体油藏多孔介质多场耦合机理复杂、分析难度大等情况，提出了新的估算导热系数的“灰箱”分析模型并给出了对应的计算公式。最后，将所提出的模型与CMG（computer modelling group)软件结合，模拟了水平井注多元热流体工况，得到了地层的物性参数分布，并验证了所提出模型的可用性。

A new heat transfer calculation model for oil reservoirs with multiple fluids

Based on the concept of representative elementary volume (REV) proposed by Bear, the heat transfer in oil reservoirs containing multiple fluids was studied. Moreover, the “three box” analysis method was used to simplify the heat transfer model of the reservoir REV. Because the multifield coupling mechanism in porous media of the oil reservoir is complex and difficult to analyze, a new “gray box” analysis model was proposed for estimating thermal conductivity and the corresponding calculation formula was provided. Finally, the model was combined with CMG（computer modelling group) software to simulate the operating conditions of the horizontal well injection with multiple thermal fluids. Furthermore, the physical parameter distribution of the ground was obtained, which verified the usability of the proposed model.