Numerical Simulation on Deepwater Drilling Wellbore Temperature and Pressure Distribution
Numerical Simulation on Deepwater Drilling Wellbore Temperature and Pressure Distribution
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DOI：
10.1080/10916461003663032
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发表时间：
2010-04
影响因子：
1.5
通讯作者：
Zhiming Wang;X. Hao;Xiaoqiu Wang;L. Xue;X. Guo
中科院分区：
文献类型：
--
作者：
Zhiming Wang;X. Hao;Xiaoqiu Wang;L. Xue;X. Guo
摘要考虑温度和压力对钻井液特性的影响，建立了深水钻井井筒温度和压力的耦合模型。通过数值模拟，得到了井筒温度和压力分布。研究表明，最低温度出现在泥浆线稍高的位置，最高温度出现在井底略高的位置。最大当量环流密度(ECD)出现在浅层。为了准确预测井筒温度和压力，必须将温度和压力对泥浆的影响进行耦合，并考虑对流换热系数的变化。
Abstract Considering the effect of temperature and pressure on the characteristics of drilling fluid, a coupled model of deepwater drilling wellbore temperature and pressure was established. By numerical simulation, the wellbore temperature and pressure distribution were obtained. Studies have shown that minimum temperature appears in the position slightly upward of the mud line, and maximum temperature appears in the position slightly upward of the bottom hole. Maximum equivalent circulation density (ECD) appears in the shallow layer. In order to accurately predict wellbore temperature and pressure, the effect of temperature and pressure on mud should be coupled; moreover, the variation of convection heat transfer coefficient should be considered.