火烧注气井等效热传递系数的实验测定研究

在建立火烧注气井等效热 传递模型的基础上,依据不同空气流速、热流密度下井筒壁面处的测量温度,测算得到 3 种情况的热 传递系数,并与相应的数值模拟的理论解加以比较,结果表明:二者随时间的变化趋势基本吻合,符合热力学第二定律的理论解释;等效热 传递模型可用于描述火驱工程实践中热空气与油层的对流换热过程。

Experimental study on equivalent thermal exergy transfer coefficient of gas-injected well in situ combustion

Based on the equivalent thermal exergy transfer model of gas-injected well in situ combustion and the measured temperatures of well wall under different air velocities and heat fluxes, the three kinds of thermal exergy transfer coefficient are measured and compared with the relevant results by numerical simulation. The results show that the their dependences on time are basically same and agree with the theoretic explanation of the second law of thermodynamics. It is illuminated that the equivalent thermal exergy transfer model can be used to describe the convective heat transfer process between the hot air and oil layer in situ combustion.