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| LaTeX Math Block |
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\frac{1}{ r_{ti} \, U} = \frac{1}{r_{ci} \, U_{ci}} + \frac{1}{r_{ci} \, U_c} + \frac{1}{r_c \, U_{cem}} |
where
| LaTeX Math Block |
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\frac{1}{ r_{ci} \, U} = \frac{1}{r_{ci} \, U_{ci}} + \frac{1}{\lambda_c} \ln \frac{r_c}{r_{ci}} + \frac{1}{\lambda_{\rm cem}} \ln \frac{r_w}{r_c}
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where
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| outer radius of the casing |
| LaTeX Math Inline |
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| body | --uriencoded--r_%7Bci%7D |
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| inner radius of the casing |
| casing wall thickness |
| thermal conductivity of the casing material |
| thermal conductivity of cement |
| thermal conductivity of wellbore fluid |
| LaTeX Math Inline |
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| body | --uriencoded--\displaystyle U_%7Bci%7D = \frac%7B\lambda%7D%7B2 \, r_%7Bci%7D%7D \, %7B\rm Nu%7D_%7Bci%7D |
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| Heat Transfer Coefficient between inner surface of the casing and moving fluid
(see also Pipe Flow Heat Transfer Coefficient) |
| Nusselt number for the moving wellbore fluid with account of its contact with inner surface of the casing
See also
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Physics / Thermodynamics / Heat Transfer / Heat Transfer Coefficient (HTC) / Heat Transfer Coefficient (HTC) @model
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