关键词: 反循环 , 压井 , 井筒 , 温度分布

Abstract: In order to make reverse circulation kill well run，it was necessary to understand the relationship between the wellbore temperature and the external environment and kill fluid thermo physical properties．From the reverse circulation kill
characteristics and to the basic heat transfer theory，the reverse circulation kill calculation model was established．The factors influencing the wellbore temperature were analyzed． The results show that kill fluid capacity， kill fluid heat capacity，geothermal gradient，well depth，kill circulating time and inlet temperature have dominant influences on the temperature of the wellbore．Changing the kill fluid capacity and inlet temperature can adjust the wellbore temperature effectively.

Key words: Reverse circulation , Well kill , Wellbore , Temperature profile