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Article: Induction response in dipping beds with invasion
Title | Induction response in dipping beds with invasion |
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Authors | |
Issue Date | 1989 |
Citation | Digest - International Geoscience And Remote Sensing Symposium (Igarss), 1989, v. 5, p. 2858-2861 How to Cite? |
Abstract | A nonmatrix approach to the electromagnetic modeling of an induction sonde response in a dipping bed environment is presented. The method is approximate and is an extension of geometrical factor theory or the more rigorous Born approximations. The method uses a new electric field vector integral equation developed by C. C. Chew and R. L. Kleinberg (1988). The receiver coil voltage consists of two parts, a volumetric component vg, and a surface component vc. The term vg reduces to the Born result when the dip angle is zero; vc accounts for the surface charge effect and is only significant when the receiver coils are in close proximity to a bed boundary. Analysis shows that the double scattering events which produce the charge interaction at a bed boundary are proportional to the factor sin2(θ0)(σ2 - σ1)2/ (σ1 + σ2), where θ0 is the dip angle and σ1 and σ2 are the conductivities of the adjacent beds. Numerical comparisons with eigenfunction solutions in special-case geometries validate the theory. |
Persistent Identifier | http://hdl.handle.net/10722/182494 |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Howard Jr, AQ | en_US |
dc.contributor.author | Chew, WC | en_US |
dc.date.accessioned | 2013-05-02T05:15:35Z | - |
dc.date.available | 2013-05-02T05:15:35Z | - |
dc.date.issued | 1989 | en_US |
dc.identifier.citation | Digest - International Geoscience And Remote Sensing Symposium (Igarss), 1989, v. 5, p. 2858-2861 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/182494 | - |
dc.description.abstract | A nonmatrix approach to the electromagnetic modeling of an induction sonde response in a dipping bed environment is presented. The method is approximate and is an extension of geometrical factor theory or the more rigorous Born approximations. The method uses a new electric field vector integral equation developed by C. C. Chew and R. L. Kleinberg (1988). The receiver coil voltage consists of two parts, a volumetric component vg, and a surface component vc. The term vg reduces to the Born result when the dip angle is zero; vc accounts for the surface charge effect and is only significant when the receiver coils are in close proximity to a bed boundary. Analysis shows that the double scattering events which produce the charge interaction at a bed boundary are proportional to the factor sin2(θ0)(σ2 - σ1)2/ (σ1 + σ2), where θ0 is the dip angle and σ1 and σ2 are the conductivities of the adjacent beds. Numerical comparisons with eigenfunction solutions in special-case geometries validate the theory. | en_US |
dc.language | eng | en_US |
dc.relation.ispartof | Digest - International Geoscience and Remote Sensing Symposium (IGARSS) | en_US |
dc.title | Induction response in dipping beds with invasion | en_US |
dc.type | Article | en_US |
dc.identifier.email | Chew, WC: wcchew@hku.hk | en_US |
dc.identifier.authority | Chew, WC=rp00656 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.scopus | eid_2-s2.0-0024807484 | en_US |
dc.identifier.volume | 5 | en_US |
dc.identifier.spage | 2858 | en_US |
dc.identifier.epage | 2861 | en_US |
dc.identifier.scopusauthorid | Howard Jr, AQ=7402702579 | en_US |
dc.identifier.scopusauthorid | Chew, WC=36014436300 | en_US |