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Six arm dipmeters employ six pad-mounted, focused current electrodes equally spaced about the main tool body. These electrodes measure resistivity at six azimuths about the borehole. These tools also measure borehole drift angle, drift azimuth, and borehole eccentricity. From this information software calculates the dip and strike of formations penetrated by the wellbore. The results are available in standard arrow, polar, and statistical plots and in tabular listings. These aid in identifying structural features such as regional dip, faults, reefs and unconformities. They also provide important information in determining depositional features such as cross bedding, foreset bedding and channel sand. Drift surveys, borehole profiles and fracture profiles are also produced from six-arm dipmeter measurements.
With their six independently sprung caliper arms and their swiveled pads, Six-Arm Dipmeter achieve uniform contact |
