Fatigue monitoring of coiled tubing in downline deployments

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United States of America Patent

PATENT NO 11761322
APP PUB NO 20220220840A1
SERIAL NO

17657762

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Abstract

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Methods for real-time coiled tubing fatigue monitoring can establish a remaining operational life of a coiled tubing strand. Standard or low-cycle plastic fatigue in bending is measured each time the coiled tubing strand is deployed through a guide arch. Also, smaller, but higher frequency loads, e.g., high cycle loads imparted to the coiled tubing strand due to interaction with an oceanic environment, are also measured. A plurality of weight detectors may be coupled to a support frame below the guide for monitoring the high-cycle loads. The remaining operational life of the coiled tubing strand may be calculated based on both the plastic strains using a low-cycle fatigue analysis and the elastic strains using a high-cycle fatigue analysis. An operator may retire a coiled tubing strand prior to failure based on the calculated remaining operational life.

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Patent Owner(s)

  • HALLIBURTON ENERGY SERVICES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hebert, Galen Roy Houston, US 3 3

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