A walkaway vertical seismic profiling modeling and imaging study and combining its results with migrated surface seismic images

This paper presents and analyzes results from a Finite Difference Modeling (FDM), processing, and imaging study of a Walkaway Vertical Seismic Profiling (WVSP) survey, and discusses how the images from WVSP enhance those from the surface seismic data. It is shown that the results from the WVSP integ...

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Main Author: Cemal Erdemir
Format: Article
Language:English
Published: General Directorate of Mineral Research and Exploration 2022-04-01
Series:Bulletin of the Mineral Research and Exploration
Subjects:
Online Access:https://dergipark.org.tr/tr/download/article-file/1921283
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author Cemal Erdemir
author_facet Cemal Erdemir
author_sort Cemal Erdemir
collection DOAJ
description This paper presents and analyzes results from a Finite Difference Modeling (FDM), processing, and imaging study of a Walkaway Vertical Seismic Profiling (WVSP) survey, and discusses how the images from WVSP enhance those from the surface seismic data. It is shown that the results from the WVSP integrate well with the image from the surface seismic performed in the same line. For the study, a seismic model with vertically and horizontally varying velocities was built and a WVSP data set was generated. The surface seismic had difficulty showing clear images from the layers with steep dips and near vertical displacements on the model due to the lack of ray coverage. The study demonstrates that the WVSP geometry can record reflections from near vertical layers facing the borehole, which help with imaging the parts of the subsurface structure which were missing in the surface seismic. With the proper combination of the images from the WVSP and the surface seismic, a more complete image profile of the subsurface can be constructed around the borehole. However, while contributing to surface seismic, it is also seen that the WVSP introduces more migration artifacts related to source interval distance and interbed multiples than the surface seismic data.
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spelling doaj.art-cb6f0b0b4924423f844da3c2ae5952172023-02-15T16:08:03ZengGeneral Directorate of Mineral Research and ExplorationBulletin of the Mineral Research and Exploration0026-45632022-04-0116716718920710.19111/bulletinofmre.98194176A walkaway vertical seismic profiling modeling and imaging study and combining its results with migrated surface seismic imagesCemal Erdemir0Angora Geophysical Services, Houston, Texas, USAThis paper presents and analyzes results from a Finite Difference Modeling (FDM), processing, and imaging study of a Walkaway Vertical Seismic Profiling (WVSP) survey, and discusses how the images from WVSP enhance those from the surface seismic data. It is shown that the results from the WVSP integrate well with the image from the surface seismic performed in the same line. For the study, a seismic model with vertically and horizontally varying velocities was built and a WVSP data set was generated. The surface seismic had difficulty showing clear images from the layers with steep dips and near vertical displacements on the model due to the lack of ray coverage. The study demonstrates that the WVSP geometry can record reflections from near vertical layers facing the borehole, which help with imaging the parts of the subsurface structure which were missing in the surface seismic. With the proper combination of the images from the WVSP and the surface seismic, a more complete image profile of the subsurface can be constructed around the borehole. However, while contributing to surface seismic, it is also seen that the WVSP introduces more migration artifacts related to source interval distance and interbed multiples than the surface seismic data.https://dergipark.org.tr/tr/download/article-file/1921283walkaway vertical seismic profilingfinite difference modelingreverse time migrationimagingseismic.
spellingShingle Cemal Erdemir
A walkaway vertical seismic profiling modeling and imaging study and combining its results with migrated surface seismic images
Bulletin of the Mineral Research and Exploration
walkaway vertical seismic profiling
finite difference modeling
reverse time migration
imaging
seismic.
title A walkaway vertical seismic profiling modeling and imaging study and combining its results with migrated surface seismic images
title_full A walkaway vertical seismic profiling modeling and imaging study and combining its results with migrated surface seismic images
title_fullStr A walkaway vertical seismic profiling modeling and imaging study and combining its results with migrated surface seismic images
title_full_unstemmed A walkaway vertical seismic profiling modeling and imaging study and combining its results with migrated surface seismic images
title_short A walkaway vertical seismic profiling modeling and imaging study and combining its results with migrated surface seismic images
title_sort walkaway vertical seismic profiling modeling and imaging study and combining its results with migrated surface seismic images
topic walkaway vertical seismic profiling
finite difference modeling
reverse time migration
imaging
seismic.
url https://dergipark.org.tr/tr/download/article-file/1921283
work_keys_str_mv AT cemalerdemir awalkawayverticalseismicprofilingmodelingandimagingstudyandcombiningitsresultswithmigratedsurfaceseismicimages
AT cemalerdemir walkawayverticalseismicprofilingmodelingandimagingstudyandcombiningitsresultswithmigratedsurfaceseismicimages