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Title: System for estimating fatigue damage

Abstract

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.

Inventors:
; ; ;
Publication Date:
Research Org.:
General Electric Company, Niskayuna, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1346964
Patent Number(s):
9,593,568
Application Number:
14/879,239
Assignee:
General Electric Company CHO
DOE Contract Number:  
11121-5402
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Oct 09
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

LeMonds, Jeffrey, Guzzo, Judith Ann, Liu, Shaopeng, and Dani, Uttara Ashwin. System for estimating fatigue damage. United States: N. p., 2017. Web.
LeMonds, Jeffrey, Guzzo, Judith Ann, Liu, Shaopeng, & Dani, Uttara Ashwin. System for estimating fatigue damage. United States.
LeMonds, Jeffrey, Guzzo, Judith Ann, Liu, Shaopeng, and Dani, Uttara Ashwin. Tue . "System for estimating fatigue damage". United States. doi:. https://www.osti.gov/servlets/purl/1346964.
@article{osti_1346964,
title = {System for estimating fatigue damage},
author = {LeMonds, Jeffrey and Guzzo, Judith Ann and Liu, Shaopeng and Dani, Uttara Ashwin},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 14 00:00:00 EDT 2017},
month = {Tue Mar 14 00:00:00 EDT 2017}
}

Patent:

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