Staff View: Air Waves Effect on Sea Bed Logging for Shallow Water Application

Air Waves Effect on Sea Bed Logging for Shallow Water Application

Sea bed logging (SBL) is a technique for finding resistive layers, which can be hydrocarbon reservoirs in the subsurface using marine controlled source electromagnetic (CSEM) survey. In CSEM, a mobile horizontal electric dipole (HED) source transmits low frequency EM signal which is towed over an a...

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Main Authors:	Daud, Hanita, Yahya, Noorhana, Asirvadam , Vijanth Sagayan, Talib, Khairul Ihsan
Format:	Article
Institution:	Universiti Teknologi Petronas
Record Id / ISBN-0:	utp-eprints.4031 /
Published:	Scopus.com 2010
Subjects:	QC Physics
Online Access:	http://eprints.utp.edu.my/4031/1/Air_Waves_Effect_on_SBL_Hanita_UTP.pdf http://www.scopus.com http://eprints.utp.edu.my/4031/
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id	utp-eprints.4031
recordtype	eprints
spelling	utp-eprints.40312017-03-20T07:38:41Z Air Waves Effect on Sea Bed Logging for Shallow Water Application Daud, Hanita Yahya, Noorhana Asirvadam , Vijanth Sagayan Talib, Khairul Ihsan QC Physics Sea bed logging (SBL) is a technique for finding resistive layers, which can be hydrocarbon reservoirs in the subsurface using marine controlled source electromagnetic (CSEM) survey. In CSEM, a mobile horizontal electric dipole (HED) source transmits low frequency EM signal which is towed over an array of seafloor receivers measuring the electric and/or magnetic field. This EM signal induces an airwave along the air/sea surface that interferes with the signal that comes from the subsurface and this airwave will start dominating at larger offsets. Airwave is actually the energy that propagates from the source through the atmosphere to the receiver on the seabed. Airwave component is problematic in shallow water because it is less attenuated during its up and down propagation compared to deeper water. This paper will present the air wave amplitude verses water depth relationship. Using the simulator that has been developed using MATLAB software we will set up a forward model that contains air, sea water, sediments and hydrocarbon reservoir with their resistivity values respectively. Sea water depth will be varied starting from 250m and is incremented every 250m until the airwaves signal captured by the receiver becomes insignificant or approaching to zero. From this simulation we shall find the water depth on which airwave has less effect on the desired forward model. Scopus.com 2010 Article PeerReviewed application/pdf http://eprints.utp.edu.my/4031/1/Air_Waves_Effect_on_SBL_Hanita_UTP.pdf http://www.scopus.com Daud, Hanita and Yahya, Noorhana and Asirvadam , Vijanth Sagayan and Talib, Khairul Ihsan (2010) Air Waves Effect on Sea Bed Logging for Shallow Water Application. 2010 IEEE Symposium on Industrial Electronics and Applications, 1 . ISSN 978-1-4244-7646-6 http://eprints.utp.edu.my/4031/
institution	Universiti Teknologi Petronas
collection	UTP Institutional Repository
topic	QC Physics
spellingShingle	QC Physics Daud, Hanita Yahya, Noorhana Asirvadam , Vijanth Sagayan Talib, Khairul Ihsan Air Waves Effect on Sea Bed Logging for Shallow Water Application
description	Sea bed logging (SBL) is a technique for finding resistive layers, which can be hydrocarbon reservoirs in the subsurface using marine controlled source electromagnetic (CSEM) survey. In CSEM, a mobile horizontal electric dipole (HED) source transmits low frequency EM signal which is towed over an array of seafloor receivers measuring the electric and/or magnetic field. This EM signal induces an airwave along the air/sea surface that interferes with the signal that comes from the subsurface and this airwave will start dominating at larger offsets. Airwave is actually the energy that propagates from the source through the atmosphere to the receiver on the seabed. Airwave component is problematic in shallow water because it is less attenuated during its up and down propagation compared to deeper water. This paper will present the air wave amplitude verses water depth relationship. Using the simulator that has been developed using MATLAB software we will set up a forward model that contains air, sea water, sediments and hydrocarbon reservoir with their resistivity values respectively. Sea water depth will be varied starting from 250m and is incremented every 250m until the airwaves signal captured by the receiver becomes insignificant or approaching to zero. From this simulation we shall find the water depth on which airwave has less effect on the desired forward model.
format	Article
author	Daud, Hanita Yahya, Noorhana Asirvadam , Vijanth Sagayan Talib, Khairul Ihsan
author_sort	Daud, Hanita
title	Air Waves Effect on Sea Bed Logging for Shallow Water Application
title_short	Air Waves Effect on Sea Bed Logging for Shallow Water Application
title_full	Air Waves Effect on Sea Bed Logging for Shallow Water Application
title_fullStr	Air Waves Effect on Sea Bed Logging for Shallow Water Application
title_full_unstemmed	Air Waves Effect on Sea Bed Logging for Shallow Water Application
title_sort	air waves effect on sea bed logging for shallow water application
publisher	Scopus.com
publishDate	2010
url	http://eprints.utp.edu.my/4031/1/Air_Waves_Effect_on_SBL_Hanita_UTP.pdf http://www.scopus.com http://eprints.utp.edu.my/4031/
_version_	1741196073620209664
score	11.62408

Air Waves Effect on Sea Bed Logging for Shallow Water Application

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