ASPECTS OF WELLBORE HEAT-TRANSFER DURING 2-PHASE FLOW

被引:205
作者
HASAN, AR [1 ]
KABIR, CS [1 ]
机构
[1] CHEVRON PETR TECHNOL CO,LA HABRA,CA
来源
SPE PRODUCTION & FACILITIES | 1994年 / 9卷 / 03期
关键词
D O I
10.2118/22948-PA
中图分类号
TE [石油、天然气工业];
学科分类号
0820 ;
摘要
Wellbore fluid temperature is governed by the rate of heat loss from the wellbore to the surrounding formation, which in turn is a function of depth and production/injection time. We present an approach to estimate wellbore fluid temperature during steady-state two-phase flow. The method incorporates a new solution of the thermal diffusivity equation and the effect of both conductive and convective heat transport for the wellbore/formation system. For the multiphase flow in the wellbore, the Hasan-Kabir model has been adapted, although other mechanistic models may be used. A field example is used to illustrate the fluid temperature calculation procedure and shows the importance of accounting for convection in the tubing/casing annulus. A sensitivity study shows that significant differences exist between the predicted wellhead temperature and the formation surface temperature and that the fluid temperature gradient is nonlinear. This study further shows that increased free gas lowers the wellhead temperature as a result of the Joule-Thompson effect. In such cases, the expression for fluid temperature developed earlier for single-phase flow should not be applied when multiphase flow is encountered. An appropriate expression is presented in this work for wellbores producing multiphase fluids.
引用
收藏
页码:211 / 216
页数:6
相关论文
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