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Complex Resistivity of Shaly Sandstone: Study on Pressure and Saturation Effect

Measurement of complex resistivity was accomplished on shaly sandstones in low to medium frequency range from 1 Hz until 0.2 MHz. The experiment was conducted at any different partial water brine saturation and different confining pressure. Interfacial and water saturation were observed to evalua...

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Main Authors: Khairy, Hilfan, Zahir Tuan Harith, Zuhar
Format: Citation Index Journal
Published: IJENS pubsliher 2010
Subjects:
Q Science (General)
QE Geology
QC Physics
Online Access:http://eprints.utp.edu.my/5288/2/IJET.pdf
http://www.ijens.org
http://eprints.utp.edu.my/5288/
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spelling my.utp.eprints.52882017-03-20T06:43:22Z Complex Resistivity of Shaly Sandstone: Study on Pressure and Saturation Effect Khairy, Hilfan Zahir Tuan Harith, Zuhar Q Science (General) QE Geology QC Physics Measurement of complex resistivity was accomplished on shaly sandstones in low to medium frequency range from 1 Hz until 0.2 MHz. The experiment was conducted at any different partial water brine saturation and different confining pressure. Interfacial and water saturation were observed to evaluate their effect to electrical resistivity. It is found that a pore geometry change due to pressure is recognizable only by using imaginary resistivity rather than real resistivity in low water saturation. This reflects that confining pressure influence a small defect to pore geometry. Meanwhile, bulk volume conductivity is more dominant in high water saturation degree, thus the interfacial conductivity contribution become less important. Relaxation time and its distribution are then estimated by using joint inversion of real and imaginary resistivity. Cole-Cole model inversion is applied to obtain those parameters. It is applied the integration of Lavenberg-Marquardt and Singular Value decomposition (SVD) to avoid singularity problems. The result exposes time distribution decreases as confining pressure is increased from 1000 psi until 3000 psi. IJENS pubsliher 2010-06-10 Citation Index Journal PeerReviewed application/pdf http://eprints.utp.edu.my/5288/2/IJET.pdf http://www.ijens.org Khairy, Hilfan and Zahir Tuan Harith, Zuhar (2010) Complex Resistivity of Shaly Sandstone: Study on Pressure and Saturation Effect. [Citation Index Journal] http://eprints.utp.edu.my/5288/
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/
topic Q Science (General)
QE Geology
QC Physics
spellingShingle Q Science (General)
QE Geology
QC Physics
Khairy, Hilfan
Zahir Tuan Harith, Zuhar
Complex Resistivity of Shaly Sandstone: Study on Pressure and Saturation Effect
description Measurement of complex resistivity was accomplished on shaly sandstones in low to medium frequency range from 1 Hz until 0.2 MHz. The experiment was conducted at any different partial water brine saturation and different confining pressure. Interfacial and water saturation were observed to evaluate their effect to electrical resistivity. It is found that a pore geometry change due to pressure is recognizable only by using imaginary resistivity rather than real resistivity in low water saturation. This reflects that confining pressure influence a small defect to pore geometry. Meanwhile, bulk volume conductivity is more dominant in high water saturation degree, thus the interfacial conductivity contribution become less important. Relaxation time and its distribution are then estimated by using joint inversion of real and imaginary resistivity. Cole-Cole model inversion is applied to obtain those parameters. It is applied the integration of Lavenberg-Marquardt and Singular Value decomposition (SVD) to avoid singularity problems. The result exposes time distribution decreases as confining pressure is increased from 1000 psi until 3000 psi.
format Citation Index Journal
author Khairy, Hilfan
Zahir Tuan Harith, Zuhar
author_facet Khairy, Hilfan
Zahir Tuan Harith, Zuhar
author_sort Khairy, Hilfan
title Complex Resistivity of Shaly Sandstone: Study on Pressure and Saturation Effect
title_short Complex Resistivity of Shaly Sandstone: Study on Pressure and Saturation Effect
title_full Complex Resistivity of Shaly Sandstone: Study on Pressure and Saturation Effect
title_fullStr Complex Resistivity of Shaly Sandstone: Study on Pressure and Saturation Effect
title_full_unstemmed Complex Resistivity of Shaly Sandstone: Study on Pressure and Saturation Effect
title_sort complex resistivity of shaly sandstone: study on pressure and saturation effect
publisher IJENS pubsliher
publishDate 2010
url http://eprints.utp.edu.my/5288/2/IJET.pdf
http://www.ijens.org
http://eprints.utp.edu.my/5288/
_version_ 1738655395183853568
score 13.211869

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