Echometer Model-H Operating Manual page 52

The following table compares the result from the anomaly marker analysis with the initial analysis that was
performed using the Automatic Analysis option:
Variable
Liquid Level depth
Joints to Liquid Level
Average jts/sec
Average jt length (ft)
Time to Liquid, sec
Average Acoustic Velocity
ft/sec
In this example there is a very large difference in the resulting number of joints to the liquid level, the liquid level
depth, the average acoustic velocity and number of joints per second.
Assuming that the depths to the downhole markers were entered correctly in the well data, then the Anomaly
Marker Analysis yields the most accurate calculation of the distance to the liquid level and shows that this new
method is a major improvement over the existing automatic method for processing fluid level depth, and should
always be used when echoes from downhole anomalies are visible in the acoustic trace.
Pressing the Continue button, the user is given the option of saving the acoustic record analysis or of discarding
the changes.
Echometer Company
5001 Ditto Lane
Wichita Falls, Texas 76302, U.S.A.
Automatic Liquid Level Depth
Method
7098
223.91
20.73
31.70
10.803
1314
Model – H Manual
Page 52
Anomaly Marker Liquid Level
Depth Analysis
6082
191.85
17.76
31.70
10.803
1126
Phone: (940) 767-4334
Fax: (940) 723-7507
E-Mail: info@echometer.com