Method including electrical self potential measurements for detecting multiphase flow in a cased hole
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United States of America Patent
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May 25, 1993
Grant Date -
N/A
app pub date -
Jul 24, 1991
filing date -
Jul 24, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for time lapse electric logging in a cased hole in which electrodes are implanted in the casing or the hole is completed with a gravel packed non conductive, perforated liner that allows an open hole logging tool to be used for time-lapse logging. Thereafter, the implemented electrodes or a self-potential (SP) logging tool are used to monitor a steam-flooding EOR method by detecting two-phase flow with time lapse logging. A potential drop between the surface and zones of interest is measured with electrodes installed in a non-conductive casing or the SP logging tool.
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