The Magnetic Thickness Detector (MTD) is 43.0mm (1 11/16”) O.D electromagnetic corrosion measuring instrument primarily run through tubing with the unique ability to simultaneously inspect tubing and the casings behind it. The integrity of the casing string can be evaluated without the need of a costly workover rig or time-consuming removal of the tubing completion.
The latest generation MTD-G tool is capable of evaluating thickness measurements up to four barriers. The state-of-the-art instrument combines a high-power transmitter, improved signal-to-noise (SNR) electronics and fully configurable acquisition. This flexible approach allows a wide range of evaluations under different conditions and conveyance systems.
The MTD-G tool has two sets of sensors, which deliver high-energy electromagnetic pulses into the pipes surrounding the tool. Based on the Pulsed Eddy Current physics principles, the tool records the composite decay of the eddy current signals that are used to evaluate the pipe conditions.