LOCALIZATION OF RESISTIVITY LOG AND RADIAL DIFFERENTIAL INTERPRETATION

A complicated lithology formation requires a localized measurement for logging. Using normal deep and shallow resistivity log data, it realizes a radial localized measurement in the 2D resistivity profile model in invaded zone and unaltered formation. It can provide a referential method for localized log which freely selects scopes. The radial resistivity differential method is suitable for the interpretation of complicated formations. The localized measurement of resistivity log provides radial parameters for radial resistivity differential method.