Universität zu Köln

Haroon, Amir ORCID: 0000-0001-5138-6730, Mogilatov, Vladimir, Goldman, Mark, Bergers, Rainer and Tezkan, Bulent (2016). Exploration of resistive targets within shallow marine environments using the circular electrical dipole and the differential electrical dipole methods: a time-domain modelling study. Geophys. J. Int., 205 (2). S. 1032 - 1049. OXFORD: OXFORD UNIV PRESS. ISSN 1365-246X

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Abstract

Two novel transient controlled source electromagnetic methods called circular electrical dipole (CED) and differential electrical dipole (DED) are theoretically analysed for applications in shallow marine environments. 1-D and 3-D time-domain modelling studies are used to investigate the detectability and applicability of the methods when investigating resistive layers/targets representing hydrocarbon-saturated formations. The results are compared to the conventional time-domain horizontal electrical dipole (HED) and vertical electrical dipole (VED) sources. The applied theoretical modelling studies demonstrate that CED and DED have higher signal detectability towards resistive targets compared to TD-CSEM, but demonstrate significantly poorer signal amplitudes. Future CED/DED applications will have to solve this issue prior to measuring. Furthermore, the two novel methods have very similar detectability characteristics towards 3-D resistive targets embedded in marine sediments as VED while being less susceptible towards non-verticality. Due to the complex transmitter design of CED/DED the systems are prone to geometrical errors. Modelling studies show that even small transmitter inaccuracies have strong effects on the signal characteristics of CED making an actual marine application difficult at the present time. In contrast, the DED signal is less affected by geometrical errors in comparison to CED and may therefore be more adequate for marine applications.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Haroon, Amir UNSPECIFIED orcid.org/0000-0001-5138-6730 UNSPECIFIED Mogilatov, Vladimir UNSPECIFIED UNSPECIFIED UNSPECIFIED Goldman, Mark UNSPECIFIED UNSPECIFIED UNSPECIFIED Bergers, Rainer UNSPECIFIED UNSPECIFIED UNSPECIFIED Tezkan, Bulent UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-277215
DOI:	10.1093/gji/ggw051
Journal or Publication Title:	Geophys. J. Int.
Volume:	205
Number:	2
Page Range:	S. 1032 - 1049
Date:	2016
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	1365-246X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ELECTROMAGNETIC METHODS; HYDROCARBON EXPLORATION; CSEM; WATER Multiple languages Geochemistry & Geophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/27721