Presentation on theme: "GeoCenter, Inc. SeisUP ® GeoCenter, Inc. Training ~ 2003 University of Texas / Dallas Husky Oil / Western Canada Basin University of Texas / Dallas Husky."— Presentation transcript:
GeoCenter, Inc. SeisUP ® GeoCenter, Inc. Training ~ 2003 University of Texas / Dallas Husky Oil / Western Canada Basin University of Texas / Dallas Husky Oil / Western Canada Basin
Introduction February 12, University of Texas / Dallas HUSKY DATA Processed By: GeoCenter Inc. for Training Session using SeisUP ® GeoCenter Inc., Houston Texas
Acknowledgments February 12, GeoCenter, Inc. President : Sukhdev Hyare Processing Manager: David Spaulding Special Projects: William Zepeda UT/D Students: Gordon Davison : Abrahim Shogar : Zijian Zhang : Nistala Suresh Many thanks to those who help organize and prepare this presentation. Especially to George McMechan for allowing us the privilege of using these data for this training session. And to Larry Yost for his professional opinions and his sincere patience.
Table of Contents February 12, SeisUP ® GeoCenter, Inc. SlidesSubjectSlidesSubject – GeoCenter, Inc. Introduction Acknowledgments Table of Contents SeisUP OVERVIEW Processing Flow SP Map Fold Distribution Geometry QC #1 Raw Rec. & Power Spectra FK Filtering Analysis Surfwave #1 QC Brute Stacks Surfwave #2 QC. S.C. Gain Analysis S. C. Decon Datum vs Refraction Statics Floating Datum Smoother Floating vs Fixed Datum Velocity Analysis ISOV velocity plots Auto Statics QC & Stacks Final Stacks Post Stack FK-Migration Post Stack FX-Migration PSTM (KTMIG) AVO attributes VIP (velocity interpolation) Archiving Copyright Disclosure
SeisUP OVERVIEW 5
Menu Tools FileEditExecuteOptionsUtilities Using the menu tools can be done easily either by opening the the various categories at top of window. (“File, Edit, Execute, Options, Utilities) OR The Icons on the right side of the window. 8
Creating "NEW” Area / Line Type in New “AREA” and/or “Line” And click on “Create” OPEN 9
New Line New Line created as “Z-Husky-1” under Area name “UT-DALLAS” 10
Copy Processing Flows OPEN SELECT: AREA & LINE AND “OPEN” 11
Selected Area / Line Area selected is now ready to be copied 12
Selecting Processing Modules OPEN & “SELECT ALL” 13
Select Area / Line to send copied modules. OPEN & “SELECT AREA & LINE” & “OK” 14
Module Librarian 15 OPEN
Processing Flow February 12, Processing Flow SeisUP ® GeoCenter, Inc. Reformat to GCI format Geometry + Edit Noise Analysis: a) FK Filter b) Surfwave Surface Consistent Gain Correction Statics: a) Datum b) Refraction (GLI3D) Surface Consistent Deconvolution Velocity Analysis Stack Q.C. Automatic Statics Velocity Analysis Stack + Filter + Scale Migrations AVO Processing Angle Gather QC Angle Stacks (3 to 24degree) AVO P-wave, Gradient, Poisson’s, & Fluid Factor Stacks AVO Cross plots FK Filtering Floating Datum vs Fixed Datum VIP + ISO Velocity a) RMS b) Interval Additional QC
Power Spectrum Analysis 23 Original Raw Record Power Spectrum Of Zone in red.
FK Filter Option 24 Opening the Inneractive FK-FILTER Analysis Select F-K analysis
FK Filter Parameters 25 F-K Analysis parameter selection Make changes as specified After inserting parameters – press “OK” Wave number taper = 1 Frequency taper = 3 Max. Frequency = 60 Polygon filter = give name
FK Filter Design Window 26 Mark specific zone of ground roll Press Analysis Button Pattern of Ground roll
FK Filter Polygon Option 27 Press Polygon filter Left click to select noise area Right click to move selected points Middle click to delete points
FK Filter Interactive After selecting filter points Press Filter Application button By pressing the Toggle button data zone will show before and after FK- filter application. 28
FK Filter Interactive - ZOOM Zoom of zone with Fk-Filter application 29
FK Filter Design Two Sided 30 Press Polygon Filter button Repeat exercise as before to select negative side of ground roll
FK Filter Design (Two Sided) Symmetrical Polygon filter 31 Select symmetrical filter for ground roll.
FK Filter – ZOOM (negative side) Zoom of selected zone 32
FK Filter Interactive – ZOOM Both Sides 33 Select a larger zone to apply two sided polygon fk-filter To view the results press the fk-analysis and use toggle button to see before and aft. Polygon Filter Selected For Further Analysis press Parameter button (Next Slide)
FK Filter Polygon Filter – Pass Option 34 Change the filter function to “PASS” And press OK.
FK Filter Interactive – Pass Option 35 Apply filter and toggle to see before and after application. Signal that is being removed from data.
FkFilter #2 Selecting another polygon filter Using same criteria as demonstrated in previous slides (fk-filter = fk2) 36
FK Filter #2 Design (Two Sided) Symmetrical Polygon filter 37 Selecting negative side of polygon F-K filter. Using same criteria as demonstrated in previous slides
FK Filter # 2 Application Reviewing polygon F-K filter (fk2). Using same criteria as demonstrated in previous 38
FK Filter # 2a Design Revising fk2 polygon fk-filter points Using same criteria as demonstrated in previous slides (fk-filter = fk2) 39
FK Filter # 2a Application Reviewing polygon F-K filter (fk2). Using same criteria as demonstrated in previous 40
FK Filter # 2a Pass Filter Change the filter function to “PASS” And press OK. 41
FK Filter # 2a Pass Filter Interactive Signal that is being removed from data with fk2 filter Apply filter and toggle to see before and after application. 42
FK Filter # 2a Pass Filter Deeper zone analysis Change zone to area with no evident ground roll and apply fk2 filter 43
FK Filter # 2a Pass Filter Deeper zone analysis interactive 44 Signal that is being removed from data.
FK Filter Processing Flow 45 Data flow as it progresses through exercise in this presentation NOTE Data must be gain corrected or scaled properly before FK-FILTER application. In this case a 2500 msec AGC equalization was used
FK Filter Parameter Selection 46 Selecting parameters for the FK-FILTER module
FK Filter # 2 Full Record Application Record after application of FkFilter (fk2) 47
Fk Filter #2 with Power Spectrum 48 Record after application of FkFilter (fk2) With power spectrum of zone in red.
FK Filter or Surfwave Data flow as it progresses through exercise in this presentation Other module that will help reduce the ground roll = SURFWAVE” Estimate the velocity of the ground roll (wave propagation to be removed) and determine the dominate frequency of the ground roll. 49
Surfwave Parameter selection 50 Velocity = 911 m /per second With dominant Frequency = 0-18 hz Module : SURFWAVE
Surfwave Analysis Record after application of SURFWAVE 51
Surfwave with Power Spectrum Record after application of SURFWAVE With power spectrum of zone in red. 52
Geometry – Raw Record (qc1) 53 Raw Record
Geometry – Edit(qc2) 54 Raw Record Edit
SurfWave#1(qc3) 55 Surfwave #1
SurfWave+SGN+SGNE(qc4) 56 Surfwave #1 Surface Consistent Gain
SurfWave1+SGN+SGNE+SurfWave2(qc5) 57 Surfwave #1 Surface Consistent Gain Surfwave #2
VIP (Velocity Interpolation) Segy format velocity disc file Velocity Input Sampling/smoothing options Velocity Conversion Velocity Extraction from a VIP file NOTE: THIS FILE WILL NOW BE USED IN THE “VIP” MODULE BELOW Velocity Input Sampling/smoothing options QC DISPLAYS Notice that we started with a VIP and ended with a VIP module. 124 VIP ~(velocity interpolation)
BACK UP AREA (ARCHIVE) TO TAPE 125 To Backup area for Archiving data flow: Press “File” Select “Backup area”
Selecting Area to Archive “Backup Area” window appear: Select Area to backup Assign tape drive number Set Backup data sets? To “NO” Press OK NOTE: WHILE DOING THIS PROCEDURE DO NOT HAVE ANYTHING ACTIVE IN THE SAME AREA. 126
Archive data set to tape Backup to tape the data set that was input to the “GEOM” data queue. 127
Copyright Disclosure Disclosure February 12, GeoCenter, Inc. SeisUP ® Houston, Texas This presentation has been exclusively created for the University of Texas / Dallas GeoCenter, Inc. 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. It is forbidden to reproduce or to transmit in any form or by any means, electronic or mechanical, including photocopying any portion of this presentation without written permission from the University of Texas/Dallas and GeoCenter, Inc. William E. Zepeda Special Projects / Customer Support