中国石油大学学报（自然科学版）2012，Vol.36Issue(6)：79-83,88,6.DOI:10.3969/j.issn.1673-5005.2012.06.014
多元热流体在井筒中的流动与传热规律
Flow and heat transfer regulation of multi-thermal fluids injection in wellbore
摘要
Abstract
A heat transfer model between high temperature gas and water was established, and the wellbore temperature and pressure models calculating the temperature field, pressure field and other parameters of multi-thermal fluids single phase flow and two phase flow were developed. The results show that the temperature and pressure of multi-thermal fluids reduce with the increase of the wellbore depth. And at a certain depth, the water vapor of multi-thermal fluids condenses into two phase flow state, and compared with the pure steam injection, the heat loss is small, dryness descends slowly and the bottom-hole dryness is high. The influence of annulus media on the decrease of temperature and pressure is small. The higher inject temperature, the smaller pressure and greater flow rate lead to the faster temperature and pressure declining, and the smaller heat loss. At the same time, the dryness of multi-thermal fluids changes earlier or degree of superheat drops greatly with the diminution of injection temperature, the increase of the annulus media heat conductivity and injection flow, but the influence of pressure on dryness has a best point, and the bottom-hole dryness is the highest.关键词
多元热流体/两相流/井筒传热/干度Key words
multi-thermal fluids/ two phase flow/ wellbore heat transfer/ dryness分类
能源科技引用本文复制引用
李兆敏,张丁涌,衣怀峰,杜文军,薛兴昌,麻涛..多元热流体在井筒中的流动与传热规律[J].中国石油大学学报（自然科学版）,2012,36(6):79-83,88,6.基金项目
国家科技支撑计划课题(2012bac24b03) （2012bac24b03）
中国石油低碳关键技术重大专项(2011E2403) （2011E2403）
