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| Prediction of wellbore temperature fleld and analysis of influence factor for high-pressure gas well kill |
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LI Hao1,SUN Bao-jiang1,ZHAO Xin-xin1,LU Ji-chen2,WANG Zhi-yuan1,MA Yong-qian1
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(1. College of Petroleum Engineering in China University of Petroleum, Dongying 257061，Chirm;2. China National Petroleum Offshore Engineering Company Limited, Beijing 100176, China)
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| Abstract: |
| According to the characteristics of reverse circulation kill and the basic principle of conservation of mass，momentum and energy, a calculation model of wellbore temperature field of reverse circulation kill process was established. The effects of inlet temperature, density, circulation time, flow rate, thermal conductivity of kill fluid and well depth on the wellbore temperature field were analyzed. The results show that with the well depth，inlet temperature and thermal conductivity of kill fluid increasing, and flow rate, circulation time, density of kill fluid decreasing, the wellbore temperature line is shifting ,to high temperature, otherwise the wellbore temperature line is shifting to low temperature. The wellbore temperature distribution can be improved by adjusting the flow rate and inlet temperature of kill fluid. |
| Key words: high-pressure gas well reverse circulation kill wellbore temperature field |
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