Deformation-and-Eccentricity

GOWell’s Deformation-and-Eccentricity Tool (DEC) is a 1-11/16 in O.D tool when run inside tubing has the unique ability to inspect Casing Deformation, Tubing Eccentricity within the casing and a minimum distance between tubing and casing. The DEC tool uses a dual array of patented electromagnetic measurements to accurately map the surrounding pipe geometry.

The tool employs a unique high SNR compressed-and-focused magnetic field and an array of magnetic sensors to measure the magnetic flux density distributions azimuthally around the tool which corresponds to variations in the spacing between tubing and casing 3. Data processing generates accurate tubular geometry and a 3D colour-enhanced image.

When run with GOWell’s PegasusStar platform, the DEC is fully combinable with Multi-Finger calipers (MFC) and Magnetic Thickness Detector (MTD). The combination provides a comprehensive evaluation of the overall well barrier integrity, providing internal tubular diameter, accurate multi-pipe strings thickness information and tubular geometry (Deformation and Eccentricity). Significant casing deformation can often indicate potentially damaged cement behind the casing and the loss of formation integrity (e.g. depletion compaction or sand collapse).O.D.

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