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.
FATIGUE MONITORING OF COILED TUBING IN DOWNLINE DEPLOYMENTS
14.07.2022
Patent
Elektronische Ressource
Englisch
IPC: | G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / F16L PIPES , Rohre / E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren |
Fatigue monitoring of coiled tubing in downline deployments
Europäisches Patentamt | 2023
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STS-55 Downline Waste Water Tank Problem
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Field Validation of a Coiled Tubing Fatigue Model
Tema Archiv | 2003
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