RPM measurement using 3-Axis Digital Magnetometer

摘要

A 3-Axis digital magnetometer (compass) data logger was designed for non-wired sensing and recording of the RPM (Revolutions Per Minute) of mud motor during Radial Drilling where the wire or wireless communication with ground/surface is impractical or not feasible. This is accomplished by measuring earth magnetic field using 3-Axis compass, store the data on the data logger, offloading data to an onsite laptop computer and then back-calculating the RPM with developed software for the efficiency analysis and performance analysis of Radial Drilling.