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Diffraction enhancement through pre-image processing: Applications to field data, sarawak basin, East Malaysia

The future exploration plans of the industry is to find a small-scale reservoir for possible economic hydrocarbon reserves. These reserves could be illuminated by the super-resolution of full seismic data, including fractured zones, pinch-outs, channel edges, small-scale faults, reflector unconformi...

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Main Authors: Bashir, Y., Ghosh, D.P., Janjuhah, H.T., Sum, C.W.
Format: Article
Published: MDPI AG 2018
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042385597&doi=10.3390%2fgeosciences8020074&partnerID=40&md5=625cdc7a74d0689b5a182ccb7caca0c2
http://eprints.utp.edu.my/21759/
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spelling my.utp.eprints.217592018-10-23T02:37:00Z Diffraction enhancement through pre-image processing: Applications to field data, sarawak basin, East Malaysia Bashir, Y. Ghosh, D.P. Janjuhah, H.T. Sum, C.W. The future exploration plans of the industry is to find a small-scale reservoir for possible economic hydrocarbon reserves. These reserves could be illuminated by the super-resolution of full seismic data, including fractured zones, pinch-outs, channel edges, small-scale faults, reflector unconformities, salt flanks, karst, caves and fluid fronts, which are generally known as small scattering objects. However, an imaging approach that includes the diffraction event individually and images it constitutes a new approach for the industry; it is known as diffraction imaging. This paper documents results of a seismic processing procedure conducted to enhance diffractions in Sarawak Basin, using datasets from the Malaysian Basin to which no diffraction processing has been applied. We observed that the diffraction amplitude achieves maximum value when the detector is positioned vertically above the end point of the reflector, but drops off with increasing offset-distance from the point. Furthermore, the rate of attenuation of the diffracted wave energy is greater than that of the normal reflected wave energy in the same medium. In addition, the results indicate that the near offset and far angle stack data provide better diffraction events. In the other hand far offset and near angle stack provides the poor diffraction response. These results were revealed by angle-stacking of near-, mid-, and far-offsets data (4.5, 22.5 and 31.5 degrees) that was conducted to study amplitude and phase change of the diffraction curve. The final imaged data provides better faults definition in the carbonate field data. © 2018 by the authors. Licensee MDPI, Basel, Switzerland. MDPI AG 2018 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042385597&doi=10.3390%2fgeosciences8020074&partnerID=40&md5=625cdc7a74d0689b5a182ccb7caca0c2 Bashir, Y. and Ghosh, D.P. and Janjuhah, H.T. and Sum, C.W. (2018) Diffraction enhancement through pre-image processing: Applications to field data, sarawak basin, East Malaysia. Geosciences (Switzerland), 8 (2). http://eprints.utp.edu.my/21759/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description The future exploration plans of the industry is to find a small-scale reservoir for possible economic hydrocarbon reserves. These reserves could be illuminated by the super-resolution of full seismic data, including fractured zones, pinch-outs, channel edges, small-scale faults, reflector unconformities, salt flanks, karst, caves and fluid fronts, which are generally known as small scattering objects. However, an imaging approach that includes the diffraction event individually and images it constitutes a new approach for the industry; it is known as diffraction imaging. This paper documents results of a seismic processing procedure conducted to enhance diffractions in Sarawak Basin, using datasets from the Malaysian Basin to which no diffraction processing has been applied. We observed that the diffraction amplitude achieves maximum value when the detector is positioned vertically above the end point of the reflector, but drops off with increasing offset-distance from the point. Furthermore, the rate of attenuation of the diffracted wave energy is greater than that of the normal reflected wave energy in the same medium. In addition, the results indicate that the near offset and far angle stack data provide better diffraction events. In the other hand far offset and near angle stack provides the poor diffraction response. These results were revealed by angle-stacking of near-, mid-, and far-offsets data (4.5, 22.5 and 31.5 degrees) that was conducted to study amplitude and phase change of the diffraction curve. The final imaged data provides better faults definition in the carbonate field data. © 2018 by the authors. Licensee MDPI, Basel, Switzerland.
format Article
author Bashir, Y.
Ghosh, D.P.
Janjuhah, H.T.
Sum, C.W.
spellingShingle Bashir, Y.
Ghosh, D.P.
Janjuhah, H.T.
Sum, C.W.
Diffraction enhancement through pre-image processing: Applications to field data, sarawak basin, East Malaysia
author_facet Bashir, Y.
Ghosh, D.P.
Janjuhah, H.T.
Sum, C.W.
author_sort Bashir, Y.
title Diffraction enhancement through pre-image processing: Applications to field data, sarawak basin, East Malaysia
title_short Diffraction enhancement through pre-image processing: Applications to field data, sarawak basin, East Malaysia
title_full Diffraction enhancement through pre-image processing: Applications to field data, sarawak basin, East Malaysia
title_fullStr Diffraction enhancement through pre-image processing: Applications to field data, sarawak basin, East Malaysia
title_full_unstemmed Diffraction enhancement through pre-image processing: Applications to field data, sarawak basin, East Malaysia
title_sort diffraction enhancement through pre-image processing: applications to field data, sarawak basin, east malaysia
publisher MDPI AG
publishDate 2018
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042385597&doi=10.3390%2fgeosciences8020074&partnerID=40&md5=625cdc7a74d0689b5a182ccb7caca0c2
http://eprints.utp.edu.my/21759/
_version_ 1738656334176321536
score 13.211869

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