Topic:
How to do Mistie Analysis on a horizon

Description:
 

Solution:
1.) Set Scope of data.  
    Scope > Surveys
    -Create new class for output
    -Select 2D survey
    -Select input class
    -Select output class
    -Enter Dominant frequency
    -Move
    -Selected Survey>Input class>Output class>f (Hz) combinations

2.) Estimate mistie times from horizon.
    Estimate > Mistie times from horizons
    -Select horizon(s), Horizon spread radius and Maximum total time shift (ms)

3.) Analyze mistie estimates from list and from seismic.
    Analyze > Mistie Estimates > From Seismic

4.) Compute mistie corrections.
    Compute > Mistie Corrections > Use Reference Lines. 
    -Select the reference lines (the lines not to be shifted)
    -Select Compute: Time Corrections only
    -Select Time correction types: Constant or Variable

5.) Analyze Mistie Corrections. 
    Analyze > Mistie corrections
    -Select all
    -Post corrections  (lines which were selected for reference will list as
    'reference').  

6.) Apply mistie corrections.
    Apply > Mistie corrections
    -Apply correction to: Both (seismic and interpretation)
    -For seismic correct: Time only
    -Select all horizons   
     Original horizons will not be shifted.  The mistie apply will create a new 
     horizon called horizon_m.
     If 'constant' was selected,all interpretation,including any selected
     faults,is shifted by the constant time.
     If 'variable' was selected  horizons are shifted on a trace-by-trace basis.
     Faults are not shifted by interpolation between trace locations and fault
     contacts are deleted.






Last Modified on: 23-NOV-98