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A land controlled‐source electromagnetic experiment using a deep vertical electric dipole: experimental settings, processing, and first data interpretation
Author(s) -
Vilamajó E.,
Rondeleux B.,
Queralt P.,
Marcuello A.,
Ledo J.
Publication year - 2015
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/1365-2478.12331
Subject(s) - repeatability , regional geology , geology , signal (programming language) , borehole , electromagnetics , economic geology , environmental geology , data processing , electromagnetic field , acoustics , engineering geology , near and far field , electric field , signal processing , noise (video) , transfer function , casing , dipole , geophysics , optics , seismology , computer science , hydrogeology , electronic engineering , electrical engineering , physics , engineering , radar , geotechnical engineering , telecommunications , artificial intelligence , image (mathematics) , chemistry , metamorphic petrology , tectonics , operating system , chromatography , quantum mechanics , telmatology , programming language , volcanism
A multichannel borehole‐to‐surface controlled‐source electromagnetic experiment was carried out at the onshore CO 2 storage site of Hontomín (Spain). The electromagnetic source consisted of a vertical electric dipole located 1.5 km deep, and the electric field was measured at the surface. The subsurface response has been obtained by calculating the transfer function between the transmitted signal and the electric field at the receiver positions. The dataset has been processed using a fast processing methodology, appropriate to be applied on controlled‐source electromagnetics (CSEM) data with a large signal‐to‐noise ratio. The dataset has been analysed in terms of data quality and repeatability errors, showing data with low experimental errors and good repeatability. We evaluate if the induction of current along the casing of the injection well can reproduce the behaviour of the experimental data.