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System for estimating fatigue damage and method for producing hydrocarbon-containing fluids

一种疲劳、水流的技术，应用在土方钻采、测量、井眼/井部件等方向，能够解决限制立管寿命和立管操作灵活性等问题

Inactive Publication Date: 2021-08-27
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Given the stated uncertainties, damage rate estimates are relatively conservative and tend to exceed actual damage rates, limiting riser life and riser operational flexibility

Method used

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  • System for estimating fatigue damage and method for producing hydrocarbon-containing fluids
  • System for estimating fatigue damage and method for producing hydrocarbon-containing fluids
  • System for estimating fatigue damage and method for producing hydrocarbon-containing fluids

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Embodiment Construction

[0038] In the following description and appended claims, reference will be made to several terms, which are defined below.

[0039] The singular forms "a", "an" and "the" include plural nouns unless the context clearly dictates otherwise.

[0040] "Optional" or "depending on the circumstances" means that the subsequently described event or circumstance may or may not occur and that the description includes both instances where the event occurs and instances where it does not.

[0041] Approximate language used throughout this specification and in the claims may be used to modify any quantitative representation that may vary within the permissible range without altering the essential function of the subject matter concerned. Accordingly, a value modified by a term or terms, such as "about" and "substantially," is not to be limited to the precise value indicated. In at least some cases, the approximate language may correspond to the precision of the instrument used to measure t...

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PUM

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Abstract

In one aspect, the present disclosure provides a system for estimating fatigue damage in a riser string and a method for producing hydrocarbon-containing fluids. The system includes a plurality of accelerometers that may be deployed along a riser string and a communication link that transmits accelerometer data from the plurality of accelerometers to one or more data processors in real time. The system uses data from a limited number of accelerometers located at sensor locations to estimate an optimal flow distribution along the entire length of the riser, including locations where no accelerometers are present. The optimized water flow distribution is then used to estimate the damage rate of the individual riser components and update the total cumulative damage of the individual riser components. The number of sensor locations is small relative to the length of the deepwater riser string, and a riser string several miles long can be reliably monitored along the entire length of the riser string using fewer than twenty sensor locations.

Description

[0001] Statement Regarding Federally Sponsored Research and Development [0002] This invention was made with Government support under Contract No. 11121-5402 RPSES with the US Department of Energy. The government has certain rights in this invention. technical field [0003] The present invention relates to monitoring damage to subsea equipment. In a particular aspect, the invention relates to monitoring fatigue in subsea riser strings in real time. Background technique [0004] Prediction and monitoring of fatigue damage caused by vortex-induced vibration (VIV) of a drilling riser in a deepwater drilling environment is a complex and challenging problem. Although there are multiple sources of fatigue damage, VIV and waves are the main causes of fatigue damage in deepwater drilling risers. Undersea currents can cause VIV, where the drilling riser vibrates in a direction perpendicular to the direction of the prevailing current. Unlike shallow water environments, deepwate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B17/01
CPCE21B17/01E21B47/001E21B47/007E21B47/01
Inventor J·莱蒙德斯J·A·古佐S·刘U·A·达尼
Owner GENERAL ELECTRIC CO