Echometer Model-H Operating Manual page 46

Once the Liquid Level has been selected, the Manual Liquid Level Depth Analysis screen is displayed:
Note that the collar count dashed marker labeled "C" indicates that the collar count stops about 3 seconds before
the liquid level echo instead of continuing to near the liquid level. This means that the indicated number of joints
to the liquid level (223.91) may not be as accurate as if the collar count had continued to a time closer to the
liquid level echo. Also, the displayed liquid level depth of 7098 feet is computed using the Average Jt Length
that was entered in the well description screen and in this case the value of 31.7 is the default value and does
not necessarily represent the actual average joint length for this well. The conclusion is that the indicated liquid
level depth of 7098 feet is not as accurate as we normally expect.
Since the user now recognizes the echoes from the mandrels and has entered the depths to all the known
downhole anomalies, he can improve the accuracy of the calculated liquid level depth by pressing the Analysis
Options button and then the Anomaly Markers button which displays the following screen as discussed in the
previous section:
Echometer Company Phone: (940) 767-4334
Model – H Manual
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Wichita Falls, Texas 76302, U.S.A. E-Mail: info@echometer.com