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On modeling a well casing for resistivity and induced polarization
Geophysics, 1984Abstract In a previous communication I proposed an analytical model to simulate the electromagnetic (EM) and induced polarization (IP) response of a metal well casing (Wait, 1983). To facilitate the analysis, the earth was idealized as a homogeneous conducting half-space of electrical properties (σ, ε, μ).
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An electrical resistivity‐apparatus for testing well‐waters
Eos, Transactions American Geophysical Union, 1940A precise but easily operated apparatus for testing resistivity of well‐waters has been developed in the Stanford University Hydrologic Laboratory. With it, field‐investigations were made on 20 wells in an area contiguous to the southern part of San Francisco Bay where salt‐water encroachment into the upper gravels has locally contaminated ground‐water
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Erosion Resistance of Sand Screens in Gas Wells
SPE Asia Pacific Oil and Gas Conference and Exhibition, 2018Abstract A few cased-hole gas wells in Southeast Asia that were initially completed without any sand control are now producing sand, and the operators want to remediate these wells via standalone sand screen inside the production tubing. In these wells, the fluid (gas/sand) produced through the perforations would impinge rather directly ...
Deepak Kumar +2 more
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Interpreting Resistivity Logs from Deviated Wells
69th EAGE Conference and Exhibition incorporating SPE EUROPEC 2007, 2007P093 Interpreting Resistivity Logs from Deviated Wells Q. Zhou* (Chevron) SUMMARY It is well known that logs especially the resistivity logs from a highly deviated well behave differently than those from a vertical well in the same reservoir. As more highly deviated wells are drilled in recent years correctly interpreting the measurements becomes ...
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Antibiotic resistance in the patient with cancer: Escalating challenges and paths forward
Ca-A Cancer Journal for Clinicians, 2021Amila K Nanayakkara, Helen W Boucher
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Molecular mechanisms of antibiotic resistance revisited
Nature Reviews Microbiology, 2022Elizabeth M Darby +2 more
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Stigma Resistance and Well-Being in the Context of the Mental Illness Identity
Journal of Health and Social Behavior, 2021Kristen Marcussen +2 more
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