Through Tubing Cement Evaluation

The Through Tubing Cement Evaluation Tool (TTCE) is a 3-1/8-inch O.D. advanced well integrity monitoring instrument that utilizes innovative cement evaluation technology to evaluate cement behind a second pipe string (annulus B) while logging inside a production tubing pipe.
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This novel technology uses “Forced Acoustic Mie Resonance” principle where the measurements are made by inducing resonance in the surrounding elastic structure comprising all the tubulars and annuli materials.
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Unlike a conventional wave propagation method, TTCE design does not use TX/RX transducers but instead relies on the low-frequency, narrow-band energy that forces structural resonance. Through careful frequency selection, the Mie resonance peak(s) with the most sensitivity to the second barrier cement interface are detected and measured.