GEOCENTER LP LAND PROCESSING. Step 2 Step 4 Step 5 Step 6 Step 3 Step 1 SeisUP ® “AGLEN” Dataset Land Processing.

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Presentation transcript:

GEOCENTER LP LAND PROCESSING

Step 2 Step 4 Step 5 Step 6 Step 3 Step 1 SeisUP ® “AGLEN” Dataset Land Processing

Building the Data Base Create “STATION “ and “SOURCE” Qc : Execution listing from each run Qc :“FOLD” AND “XYMAP” modules Loading Data ~ begin Processing SEGYREAD to WRITE (GCI internal format) Geometry READ + GEOM + SELECT + WRITE Geometry Q.C. READ + GEOMCHK + QCVIEW READ + STATIC + DISPLAY SeisUP ® “AGLEN” Dataset Land Processing (Step 1)

“QCVIEW” Display of amplitude file created with “GEOMCK” module

EDIT DATA READ + LAP+ SGN3 + RLIV(2) + SPIKEDIT + LENGTH + FKFILTER + WRITE READ + STATIC + FILTER + TVEQ + CVA2D GEOVEL (interactive velocity analysis) After velocities have been picked ready for step 3. Creating “EDIT DATA” READ + LAP+ SPIKEDIT + SGN1 +SGN2 ( THIS PROCESS PERFORMED TO DERIVE GAIN CURVES AND AUTOMATIC DELETE BAD TRACES) READ + LAP + SGN3 + SPIKEDIT + FKFILTER GEOVEL (interactive velocity analysis) PLEASE NOTE THAT THERE ARE SEVERAL RUNS ATTACHED TO THE” GEOM” DISC FILE. THESE RUNS ARE QC RUNS TO ANALYSIS THE EFFECTS OF ALL THE STEPES BEING APPLIED TO CREATE THE “EDITDATA” DISC FILE. THERE ARE TREMENDOUS AMOUNT OF SPIKES AND LATERAL NOISE THAT IS NOT SOURCE OR SURFACE RELATED. THE DATA SET HAS BEEN PROCESSED WITH MINIMAL AMOUT OF EDITING (DUE TO TIME CONTRAINTS. IT WOULD BE EXTREMELY IMPERATIVE THAT MORE EDITING BE PERFORMED. DATA QUALITY WOULD THEREFORE BE IMPROVED. PLEASE REVIEW FOR FINAL QC “geom” DATA GEOM DATA SURFACE CONSISTENT GAIN ANALYSIS (SGN1&2) APPLY GAIN AND EDIT OPTION WITH SGN3 MODULE EDIT DATA QC DATA ~ READ + DISPLAY SeisUP ® “AGLEN” Dataset Land Processing (Step 2)

Raw Record SGN1-2 + LAP

SGN1-2 + LAP SGN1-2 + LAP + FK-FILTER

RAP BRUTE STACK ( NO DECON)

AGC BRUTE STACK ( NO DECON)

VELOCITY ANALYSIS

SURFACE CONSISTENT DECON DATA (CONTINUE TO STEP 4) QC DATA AUTO STATICS (DOUBLE PASS) NMO GATHER VELOCITY ANALYSIS WITH AUTOSTATICS AUTO STATICS STACKS AUTO STATICS + SURFACE CONSISTENT DECON QC STACKS SeisUP ® “AGLEN” Dataset Land Processing (Step 3)

RAP AUTOSTATICS STACK

AGC AUTOSTATICS STACK

RAP AUTOSTATICS STACK + FXDN

AGC AUTOSTATICS STACK + FXDN

SURFACE CONSISTENT DECON DATA Decon Stack QC Display's (with & without FXDN) Surface Consistent “SGNE1” (OFFSET) Surface Consistent “SGN1-2” (Analysis) Final Surface Consistent Gain Data QC Display's (without FXDN) Gain Application Modules SGNE2 SGN3 QC STACK & DISPLAY INPUT DATA SET FOR STEP 5 SeisUP ® “AGLEN” Dataset Land Processing (Step 4)

RAP AUTOSTATICS + SURFACE CONSISTENT DECON + STACK + FXDN

AGC AUTOSTATICS + SURFACE CONSISTENT DECON + STACK + FXDN

Final Surface Consistent Gain Data FINAL GATHER QC FOR FINAL STACKS & PRE-STACK TIME MIGRATIONS (KTMIG) (continue to step 6) FINAL STACK FOR POST STACK TIME MIGRATIONS (FXMIG, FKMIG, AND KTMIG) (continue to step 6) SeisUP ® “AGLEN” Dataset Land Processing (Step 5)

POST STACK TIME MIGRATIONS (FXMIG, FKMIG, AND KTMIG) “VIP” Smoothing final velocity for migration queue’s Final Gather For Pre-Stack Migration (KTMIG) KTMIG (pre- stack) PSTM STACK FINAL QC DISPLAY SeisUP ® “AGLEN” Dataset Land Processing (Step 6)

POST STACK FX-MIG – RAP STACK

POST STACK FK-MIG – RAP STACK

POST STACK KTMIG – RAP STACK

PSTM – KTMIG – AGC STACK

SeisUP ® “AGLEN” Dataset Land Processing Entire Processing Flow (Steps 1-6)

GeoCenter LP has made every effort to ensure the accuracy of the information herein. However, appropriate information sources should be consulted, especially for new or unfamiliar processing procedures. It is the responsibility of the processing geophysicist to evaluate and conclude his/her own opinion to the context of the material presented. Justin Hersey Business Development