Application of Acoustic Impedance Inversion to Evaluate the Pay Zone Distribution in Sepat Field, Malay Basin

The Sepat oil and gas field, in Malay Basin consists of thin hydrocarbon sands and some intercalated coal beds encased in shales which are often beyond seismic resolution. This poses a major challenge in delineation of prospect hydrocarbon sands of the reservoir. Therefore, this research applied pos...

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Main Author: Marial Amom, James Matungbor
Format: Final Year Project
Language: English
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-utpedia.18152 /
Published: Universiti Teknologi PETRONAS 2016
Subjects:
G Geography (General)
Online Access: http://utpedia.utp.edu.my/18152/1/FINAL%20DISSERTATION.pdf
http://utpedia.utp.edu.my/18152/
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spelling utp-utpedia.181522018-11-22T14:39:10Z http://utpedia.utp.edu.my/18152/ Application of Acoustic Impedance Inversion to Evaluate the Pay Zone Distribution in Sepat Field, Malay Basin Marial Amom, James Matungbor G Geography (General) The Sepat oil and gas field, in Malay Basin consists of thin hydrocarbon sands and some intercalated coal beds encased in shales which are often beyond seismic resolution. This poses a major challenge in delineation of prospect hydrocarbon sands of the reservoir. Therefore, this research applied post-stack inversion methods such as the Bandlimited and Model-based techniques on Sepat 3D seismic cube and well-logs data to generate impedance volumes linked to rock properties such as lithology, pore fluids, etc. The acoustic impedance data has improved resolution due to the contribution of very low frequencies from the well log data. Thus, the impedance volumes are purported and used (1) to discriminate and delineate low impedance gas-saturated reservoir sands from non-gas reservoir sands, and (2) to aid in interpreting correct subsurface lithology identification and fluid content distribution. In this study, the Hampson-Russell software package was used to build a high resolution acoustic impedance inversion models. The main steps in the procedure included calibration by tying well logs to the seismic data for determining the low frequency acoustic impedance trend, estimation of the wavelet, generation of a low-resolution background model, and inversion of the seismic trace. Universiti Teknologi PETRONAS 2016-01 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/18152/1/FINAL%20DISSERTATION.pdf Marial Amom, James Matungbor (2016) Application of Acoustic Impedance Inversion to Evaluate the Pay Zone Distribution in Sepat Field, Malay Basin. Universiti Teknologi PETRONAS. (Submitted)
institution Universiti Teknologi Petronas
collection UTPedia
language English
topic G Geography (General)
spellingShingle G Geography (General)
Marial Amom, James Matungbor
Application of Acoustic Impedance Inversion to Evaluate the Pay Zone Distribution in Sepat Field, Malay Basin
description The Sepat oil and gas field, in Malay Basin consists of thin hydrocarbon sands and some intercalated coal beds encased in shales which are often beyond seismic resolution. This poses a major challenge in delineation of prospect hydrocarbon sands of the reservoir. Therefore, this research applied post-stack inversion methods such as the Bandlimited and Model-based techniques on Sepat 3D seismic cube and well-logs data to generate impedance volumes linked to rock properties such as lithology, pore fluids, etc. The acoustic impedance data has improved resolution due to the contribution of very low frequencies from the well log data. Thus, the impedance volumes are purported and used (1) to discriminate and delineate low impedance gas-saturated reservoir sands from non-gas reservoir sands, and (2) to aid in interpreting correct subsurface lithology identification and fluid content distribution. In this study, the Hampson-Russell software package was used to build a high resolution acoustic impedance inversion models. The main steps in the procedure included calibration by tying well logs to the seismic data for determining the low frequency acoustic impedance trend, estimation of the wavelet, generation of a low-resolution background model, and inversion of the seismic trace.
format Final Year Project
author Marial Amom, James Matungbor
author_sort Marial Amom, James Matungbor
title Application of Acoustic Impedance Inversion to Evaluate the Pay Zone Distribution in Sepat Field, Malay Basin
title_short Application of Acoustic Impedance Inversion to Evaluate the Pay Zone Distribution in Sepat Field, Malay Basin
title_full Application of Acoustic Impedance Inversion to Evaluate the Pay Zone Distribution in Sepat Field, Malay Basin
title_fullStr Application of Acoustic Impedance Inversion to Evaluate the Pay Zone Distribution in Sepat Field, Malay Basin
title_full_unstemmed Application of Acoustic Impedance Inversion to Evaluate the Pay Zone Distribution in Sepat Field, Malay Basin
title_sort application of acoustic impedance inversion to evaluate the pay zone distribution in sepat field, malay basin
publisher Universiti Teknologi PETRONAS
publishDate 2016
url http://utpedia.utp.edu.my/18152/1/FINAL%20DISSERTATION.pdf
http://utpedia.utp.edu.my/18152/
_version_ 1741195303169556480
score 11.62408

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