中文摘要：

与常规单个节相比二阶段的关上的 thermosyphon (TPCT ) wellbore，二节的 TPCT wellbore 让更好的热转移性能，它可以在 wellbores 改进液体的温度分发，在水源增加液体的温度并且甚至更有效地减少常规 TPCT wellbores 的失败率。二节的 TPCT wellbores 的热转移性能被工作媒介，联合模式和油流动率影响。不同工作媒介被介绍进上面、更低的 TPCT，它可以在 wellbores 完成在工作媒介和温度场地之间的一场更好的比赛。互相依赖在联合模式和油的流动率之间存在，它影响二节的 TPCT wellbore 的热转移表演。试验性的结果证明与分别地充满氟利昂和甲醇的相等的上面、更低的 TPCT，二节的 TPCT wellbore 让最好的热当油流动率是 200 L/h 时，转移性能。

英文摘要：

Compared with a conventional single section two-phase closed thermosyphon （TPCT） wellbore, a two-section TPCT wellbore has better heat transfer performance, which may improve the temperature distribution of fluid in wellbores, increase the temperature of fluid in wellheads and even more effectively reduce the failure rate of conventional TPCT wellbores. Heat transfer performance of two-section TPCT wellbores is affected by working medium, combination mode and oil flow rate. Different working media are introduced into the upper and lower TPCTs, which may achieve a better match between the working medium and the temperature field in the wellbores. Interdependence exists between the combination mode and the flow rate of the oil, which affects the heat transfer performance of a two-section TPCT wellbore. The experimental results show that a two-section TPCT wellbore, with equal upper and lower TPCTs respectively filled with Freon and methanol, has the best heat transfer performance when the oil flow rate is 200 L/h.