Effect of a Heat-Conducting Well Casing on Temperature Distribution in an Observation Well

[+] Author and Article Information
P. J. Closmann

Shell Development Company, Houston, Tex. 77001

E. R. Jones

Shell Oil Company, Houston, Tex. 77025

E. A. Vogel

Houston, Tex. 77042

J. Energy Resour. Technol 101(1), 20-27 (Mar 01, 1979) (8 pages) doi:10.1115/1.3446856 History: Received July 18, 1978; Online August 19, 2010


The effect of heat conduction on temperature along the wall of a well casing has been determined by solution of the equations of heat conduction. The casing was assumed to pass vertically through a planar heat source of constant temperature. The casing and formation were assumed to be in perfect thermal contact. Numerical results were obtained for two sizes of steel casing and one size of aluminum casing. At any given distance from the heat source, the casing temperature differs most at early times from the formation temperature computed in the absence of casing. This difference decreases rapidly with time. Furthermore, the maximum difference occurs at greater distances from the heat source as time increases. In general, after about three months of heating, errors in measured temperatures due to conduction along the casing wall are negligible.

Copyright © 1979 by ASME
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