Effects of different thermal insulated drill pipe deployment methods on wellbore temperature control in ultra-deep wells

查看详情 浏览次数:1
中文题名不同隔热钻杆部署方式对超深井井筒温度控制的影响
作者Heng-Rui Zhang1,2;Yi-Nao Su1,2,3;Mao-Lin Liao1,2CA1;Hong-Yu Wu1,2;Hai-Yan Zhang1,2;Hao-Yu Wang1,2;Ke Liu3
作者单位1Downhole Intelligent Cybernetics Institute, University of Science and Technology Beijing, Beijing, 100083, China;2School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, 100083, China;3China National Petroleum Corporation Engineering Technology R&D Company Limited, Beijing, 102206, China
刊名Petroleum Science
2025
22
No.10
摘要
The exploitation of oil resources has now extended to ultra-deep formations, with depths even exceeding 10,000 m. During drilling operations, the bottomhole temperature (BHT) can surpass 240 °C. Under such high-temperature conditions, measurement while drilling (MWD) instruments are highly likely to malfunction due to the inadequate temperature resistance of their electronic components. As a wellbore temperature control approach, the application of thermal insulated drill pipe (TIDP) has been proposed to manage the wellbore temperature in ultra-deep wells. This paper developed a temperature field model for ultra-deep wells by coupling the interactions of multiple factors on the wellbore temperature. For the first time, five distinct TIDP deployment methods were proposed, and their corresponding wellbore temperature variation characteristics were investigated, and the heat transfer laws of the ultra-deep wellbore-formation system were quantitatively elucidated. The results revealed that TIDP can effectively restrain the rapid rise in the temperature of the drilling fluid inside the drill string by reducing the heat flux of the drill string. Among the five deployment methods, the method of deploying TIDP from the bottomhole upwards exhibits the best performance. For a 12,000 m simulated well, when 6000 m of TIDP are deployed from the bottomhole upwards, the BHT decreases by 52 °C, while the outlet temperature increases by merely 1 °C. This not only achieves the objective of wellbore temperature control but also keeps the temperature of the drilling fluid at the outlet of annulus at a relatively low level, thereby reducing the requirements for the heat exchange equipment on the ground. The novel findings of this study provide significant guidance for wellbore temperature control in ultra-deep and ultra-high-temperature wells.

@ 2023 版权所有 中国地质图书馆 (中国地质调查局地学文献中心)

京ICP备 05064591号 京公网安备11010802017129号

建议浏览器: 火狐、谷歌、微软 Edge、不支持 IE