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Title: System for estimating fatigue damage

In one aspect, a system for estimating fatigue damage in a riser string is provided. The system includes a plurality of accelerometers which can be deployed along a riser string and a communications link to transmit accelerometer data from the plurality of accelerometers to one or more data processors in real time. With data from a limited number of accelerometers located at sensor locations, the system estimates an optimized current profile along the entire length of the riser including riser locations where no accelerometer is present. The optimized current profile is then used to estimate damage rates to individual riser components and to update a total accumulated damage to individual riser components. The number of sensor locations is small relative to the length of a deepwater riser string, and a riser string several miles long can be reliably monitored along its entire length by fewer than twenty sensor locations.
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Issue Date:
OSTI Identifier:
General Electric Company CHO
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2015 Oct 09
Research Org:
General Electric Company, Niskayuna, NY (United States)
Sponsoring Org:
Country of Publication:
United States

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