Echometer Model-H Operating Manual page 42

The table is navigated using the Next Item and Previous Item keys and also the Tab key. Undo Changes will
reset the table to all blanks.
Having completed the entry or review of the marker data, selecting the Accept & Exit option presents the user
with the Adjust Anomaly Marker Depths screen, where the program has automatically indicated with a vertical
dashed line and green highlighted band, the general location of the echo generated from the first anomaly in the
table.
The marker location (at 4.914 seconds) is based on the default acoustic velocity currently active in the program.
This default velocity is obtained from the Well Information record if one has been entered, otherwise the SetUp
Default Acoustic Velocity is used.
Note also that the program displays additional vertical dashed lines at the approximate distance for all the other
anomalies that have been entered in the table, whether their echoes are visible or not.
The user now must manually process the record, from the top down, beginning at the anomaly highlighted with
the green band and should align correctly each individual marker with the corresponding visible echo. In this
process the program calculates the average acoustic velocity for the wellbore interval between the marker
currently being adjusted and the previous marker or the wellhead in case there is only one marker such as a liner
top.
The highlighted portion of the record is displayed in the zoom window at the center left of the screen. In this
example the window spans the time between 4.5 and 5.5 seconds. Note that the location of the vertical dashed
line does not coincide with the first break of the echo from the known anomaly. The difference is due to the use
of the default acoustic velocity (1127 ft/sec which is an estimate of the actual velocity) to locate the marker in
time.
The horizontal arrows, Left/Right are used to move the marker. The vertical Up/Down arrows are used to
change the vertical scale of the window. The Enter button is used to accept the marker position.
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