Open topic with navigation
Horizon
Math Examples
Example #1: Copying a Horizon
- Give your new horizon a name by clicking on HzMath01
under Target Horizon (New) and
entering a new name, say horizon2. (Alternatively, you can select an
existing horizon.)
- Double click on the T[x] of the horizon you wish
to copy, say‘horizon1.
- The time equation should now read: horizon2 =
T[horizon1].
- Click <Execute>.
- If you follow the above instructions, your new horizon will have no amplitude
values. See Example #2 (Steps 5 through 7) for extracting amplitudes for
the new horizon.
Example #2: Adding a Constant Time Shift to a Horizon
and Extracting the Amplitude of the New Horizon
- Give your new horizon a name by clicking on HzMath01
under Target Horizon (New) and
entering a new name, say horizon2. (Alternatively, you can select an
existing horizon).
- Double click on the T[x] of the reference horizon,
say horizon1.
- Type + 15 from the keypad or from your keyboard.
- The time equation should now read: horizon2 =
T[horizon1] + 15.
To extract the amplitudes of this horizon, we
must define an amplitude equation.
- Select the check box next to Horizon Equation for Amplitude to make
this box active.
- Select the AMP
function key on the keypad.
- Copy the right-hand side of the time equation
(T[horizon1] + 15) and paste it as a variable within AMP(
) (by clicking the right mouse button and selecting
or ).
- The amplitude equation should now read: horizon2
= AMP(T[horizon1] + 15).
- Click <Execute>.
Example #3: Time Gate Equations
Use the Horizon
Equation for Time for time gate
functions. Time gate functions take two horizons or constants as variables.
Constants can also be used to express the time of a horizon plus or minus
a constant. Enter the shallower horizon time as the first term.
horizon3 = RMS(T[horizon1],T[horizon2])
horizon3 = RMS(T[horizon1],1500)
horizon3 = RMS(T[horizon1]-100,T[horizon1]
+100)
What do you want to do?