Processing techniques to enhance imaging of ultra-high frequency seismic data acquired with P-Cable technology
Master's thesis in Petroleum Geoscience Engineering P-Cable seismic acquisition system is a rather new technology; developed through the past 20 years. Consequently, the use of P-Cable technology has been limited, although researchers still believe that further improvements can achieve better r...
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University of Stavanger, Norway
2017
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Online Access: | http://hdl.handle.net/11250/2464468 |
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ftunivstavanger:oai:uis.brage.unit.no:11250/2464468 2023-06-11T04:10:33+02:00 Processing techniques to enhance imaging of ultra-high frequency seismic data acquired with P-Cable technology Storaas, Øystein Weibull, Wiktor Waldemar Barents sea 2017-06-15 application/pdf http://hdl.handle.net/11250/2464468 eng eng University of Stavanger, Norway Masteroppgave/UIS-TN-IPT/2017; http://hdl.handle.net/11250/2464468 Navngivelse 4.0 Internasjonal P-Cable Barents Sea Vestnesa Ridge Snøhvit field petroleumsgeologi seismic processing VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Geoteknikk: 513 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Petroleumsgeologi og -geofysikk: 464 Master thesis 2017 ftunivstavanger 2023-05-29T16:03:55Z Master's thesis in Petroleum Geoscience Engineering P-Cable seismic acquisition system is a rather new technology; developed through the past 20 years. Consequently, the use of P-Cable technology has been limited, although researchers still believe that further improvements can achieve better results with this type of data. Characteristics associated with P-Cable seismic data include broad frequency bandwidth, shot offset, and low fold. The objectives of this thesis will be to provide a processing workflow with the main goal of enhancing imaging of ultrahigh resolution P-Cable 3D seismic, acquired at Vestnesa Ridge and Snøhvit Field. This has been done by testing various methods, corresponding parameters, and through constructing a synthetic model to confirm whether improvements have been reached or not. This project differs from previous studies dealing with P-Cable 3D seismic data as it will also focus on analyzing the behavior of the synthetic model to compare the different migration techniques. The processing steps will also be considered with emphasis to aspects such as time-efficiency, resolution and geological reasoning. However, the result should ideally present images of higher resolution than previously possible to obtain with published workflows. This work has revealed how different approaches can lead to completely different results regarding signal-to-noise ratio with similar resolution, precision in presenting accurate imaging of the subsurface, and cost-efficiency. The results have shown that noise filtered Stolt migrated data including pre-migration operation such as brute stack, F-XY deconvolution, missing data interpolation, and automatic gain control obtains good imaging with high spatial resolution and improved signal-to-noise ratio. Stolt migration also presented images with more continuous reflectors, and resolution sufficient to confidently separate features. Compared, prestack time migration constructed images of less diffraction imprint, but contained more extensive acoustic blanking ... Master Thesis Barents Sea Snøhvit University of Stavanger: UiS Brage Barents Sea |
institution |
Open Polar |
collection |
University of Stavanger: UiS Brage |
op_collection_id |
ftunivstavanger |
language |
English |
topic |
P-Cable Barents Sea Vestnesa Ridge Snøhvit field petroleumsgeologi seismic processing VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Geoteknikk: 513 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Petroleumsgeologi og -geofysikk: 464 |
spellingShingle |
P-Cable Barents Sea Vestnesa Ridge Snøhvit field petroleumsgeologi seismic processing VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Geoteknikk: 513 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Petroleumsgeologi og -geofysikk: 464 Storaas, Øystein Processing techniques to enhance imaging of ultra-high frequency seismic data acquired with P-Cable technology |
topic_facet |
P-Cable Barents Sea Vestnesa Ridge Snøhvit field petroleumsgeologi seismic processing VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Geoteknikk: 513 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Petroleumsgeologi og -geofysikk: 464 |
description |
Master's thesis in Petroleum Geoscience Engineering P-Cable seismic acquisition system is a rather new technology; developed through the past 20 years. Consequently, the use of P-Cable technology has been limited, although researchers still believe that further improvements can achieve better results with this type of data. Characteristics associated with P-Cable seismic data include broad frequency bandwidth, shot offset, and low fold. The objectives of this thesis will be to provide a processing workflow with the main goal of enhancing imaging of ultrahigh resolution P-Cable 3D seismic, acquired at Vestnesa Ridge and Snøhvit Field. This has been done by testing various methods, corresponding parameters, and through constructing a synthetic model to confirm whether improvements have been reached or not. This project differs from previous studies dealing with P-Cable 3D seismic data as it will also focus on analyzing the behavior of the synthetic model to compare the different migration techniques. The processing steps will also be considered with emphasis to aspects such as time-efficiency, resolution and geological reasoning. However, the result should ideally present images of higher resolution than previously possible to obtain with published workflows. This work has revealed how different approaches can lead to completely different results regarding signal-to-noise ratio with similar resolution, precision in presenting accurate imaging of the subsurface, and cost-efficiency. The results have shown that noise filtered Stolt migrated data including pre-migration operation such as brute stack, F-XY deconvolution, missing data interpolation, and automatic gain control obtains good imaging with high spatial resolution and improved signal-to-noise ratio. Stolt migration also presented images with more continuous reflectors, and resolution sufficient to confidently separate features. Compared, prestack time migration constructed images of less diffraction imprint, but contained more extensive acoustic blanking ... |
author2 |
Weibull, Wiktor Waldemar |
format |
Master Thesis |
author |
Storaas, Øystein |
author_facet |
Storaas, Øystein |
author_sort |
Storaas, Øystein |
title |
Processing techniques to enhance imaging of ultra-high frequency seismic data acquired with P-Cable technology |
title_short |
Processing techniques to enhance imaging of ultra-high frequency seismic data acquired with P-Cable technology |
title_full |
Processing techniques to enhance imaging of ultra-high frequency seismic data acquired with P-Cable technology |
title_fullStr |
Processing techniques to enhance imaging of ultra-high frequency seismic data acquired with P-Cable technology |
title_full_unstemmed |
Processing techniques to enhance imaging of ultra-high frequency seismic data acquired with P-Cable technology |
title_sort |
processing techniques to enhance imaging of ultra-high frequency seismic data acquired with p-cable technology |
publisher |
University of Stavanger, Norway |
publishDate |
2017 |
url |
http://hdl.handle.net/11250/2464468 |
op_coverage |
Barents sea |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Snøhvit |
genre_facet |
Barents Sea Snøhvit |
op_relation |
Masteroppgave/UIS-TN-IPT/2017; http://hdl.handle.net/11250/2464468 |
op_rights |
Navngivelse 4.0 Internasjonal |
_version_ |
1768385036512395264 |