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Borehole electrokinetic responses in fracture dominated hydraulically conductive zones
Author(s) -
Worthington M. H.,
Hunt Craig W.
Publication year - 2000
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1999gl011099
Subject(s) - borehole , electrokinetic phenomena , geology , devonian , hydrogeology , fracture (geology) , classification of discontinuities , mineralogy , petrology , geotechnical engineering , geochemistry , materials science , nanotechnology , mathematics , mathematical analysis
Electrokinetic borehole logging experiments conducted in fracture dominated Devonian metasediments and Carboniferous limestone boreholes containing dissolution discontinuities, indicate a strong relative amplitude correlation between a downhole electrokinetic response and previously obtained hydrogeological data for the respective boreholes. Voltages in the range 0.2–1.5 volt were recorded per MPa of gauge pressure induced in the borehole fluid. A relationship between fracture aperture and the frequency content of the electrical data has also been observed.