ELASTOGRAPHY FOR CEMENT INTEGRITY INSPECTION
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United States of America Patent
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Issued Date -
Oct 30, 2014
app pub date -
Apr 26, 2013
filing date -
Apr 26, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for examining integrity of cement in a wellbore includes deploying an ultrasound transducer within a wellbore. One or more reference ultrasound images of the cement within the wellbore are acquired. A pushing pulse is emitted from the ultrasound transducer to elicit a displacement of the cement within the wellbore. A sequence of ultrasound images is acquired, over time, depicting the displacement of the cement within the wellbore elicited by the pushing pulse. A strain tensor map is generated from a difference between the one or more reference ultrasound images and the acquired sequence of ultrasound images. A degree of integrity of the cement within the wellbore is determined based on the generated strain tensor map.
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