Tool casing detection

摘要

Various embodiments include apparatus and methods to conduct testing related to the disposition of measuring tools downhole in a borehole, where the measuring tools are deployed to perform testing to evaluate properties of regions in the borehole. A plurality of test analyses on data collected from operating a measuring device of a measuring tool in the borehole can be used to determine whether the measuring device is in casing or out of casing. Additional apparatus, systems, and methods are disclosed.

主权项

1. A method comprising:
collecting data from operating a measuring device in a borehole, the measuring device being a nuclear magnetic resonance device; conducting a plurality of test analyses on the data to determine whether the measuring device is in casing or out of casing, each test analysis of the plurality of test analyses being based on a function of frequency; and controlling the measuring device based on results of the test analyses.