Exercise 4

        Amplitude Extraction Workflow

Use the SEGY input data provided in /hou/data/D_152_001/SU_Class/class_project/seismic/inversion.sgy

Data is organized with fldr as lines and cdp as traces

Import the data to a BHPIO file named tiger_inv

Copy fldr to ep before loading

Load lines 839-859, by 2, and traces 2225-2651, by 2

Use the picks provided in

/hou/data/D_152_001/SU_Class/class_project/horizons/aa2_peak.xyz and aa2_trough.xyz

Load the aa2_peak picks to trace header gelev and load aa2_trough picks to selev

You can use the same bias values(+-16) that were used in the load_picks example.

Use the following bhpintegrate parameters:

  mode=edge type=trough search=5 limit=5

You will have to use additional parameters to cause bhpintegrate to get picks from gelev and selev.

Save the amplitude extraction results to your horizons directory as area.xyz, amp.xyz, width.xyz, p1,xyz, p2.xyz

Sample answer script is in

/hou/data/D_152_001/SU_Class/class_project/scripts/answers/exercise4.sh

You can spot-check your result by comparing values in you output horizons with the same keys in aa2.area.xyz, etc.