WELLBORE INTEGRITY MAPPING USING WELL-CASING ELECTRODES AND SURFACE-BASED ELECTROMAGNETIC FIELDS

摘要

The integrity of a well is evaluated using a non-invasive and lower cost screening system and method. The system and method identify whether well integrity has degraded and whether there is a clear break in the casing (100) of a well, a corroded patch (113) or faults in the casing (100). This is accomplished without requiring entry into the well.