Echometer Company
Model – H Manual
Phone: (940) 767-4334
5001 Ditto Lane
Page 46
Fax: (940) 723-7507
Wichita Falls, Texas 76302, U.S.A.
E-Mail:
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: