Environmental Engineering Reference
In-Depth Information
Fig. 8.11
Water injection: (
a
) Temperature Profile, (
b
) Flow rate vs. ʔ
T
. Reprinted with permis-
sion of the SPE-AIME from Witterholt and Tixier (1972)
Fig. 8.12
Shut-in temperature survey. Reprinted with permission of the SPE-AIME from
Witterholt and Tixier (1972)
Differential-Temperature Surveys
A differential-temperature log is a recording made, versus depth, of the difference
in temperature between two points in the well. Effectively, the trace is a differentia-
tion of the temperature curve itself. In practice this is accomplished either by having
matched sensors on the logging probe some short distance apart or by memorizing
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