Environmental Engineering Reference
In-Depth Information
Fig. 6.3
Velocity shot log. Courtesy Schlumberger
Question # 6.1
Casing is 7-in. 26 lb.
Tool OD is 1-11/16 in.
Time between peaks = 18 s.
Detector spacing = 59 in.
Find flow rate in B/D.
Timed-Run Analysis
In the timed-run analysis, a slug of radioactive material is ejected and then a gamma
ray log (vs. depth) is made repeatedly at various time intervals to trace where the
radioactive slug eventually ends up. Figure
6.4
illustrates such a log.
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