Cost-Effective Corrosion Detection Sensor for Above-Ground Oil and Gas Flowlines

Nader Vahdati, Oleg Shiryayev, Shahid M. Parapurath, Fook F. Yap, Haider Butt

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A sensor for monitoring of the external corrosion of small-diameter aboveground oil and gas pipelines (called flowlines), based on fiber-optic strain sensing, is proposed. The working principle of our proposed sensor relies on the use of a pre-stressed sacrificial structure made of the same material as the pipeline and monitoring changes in the measured strain that occur due to deterioration caused by corrosion to the structure. We present the development of analytical equations that allow designing the sensor structure to achieve the desired strain values. The analysis was verified using commercial finite element analysis (FEA) software. The proposed sensor is simple and cost-effective and can be easily manufactured. It can be deployed on existing overground pipelines without any modification to the pipeline structure. While it is not capable of measuring the corrosion rate continuously, it can provide a measurement of the average corrosion rate over the life span of its sacrificial metal structure.

Original languageBritish English
Article number8489
JournalSensors (Switzerland)
Volume22
Issue number21
DOIs
StatePublished - Nov 2022

Keywords

  • corrosion sensing
  • fiber Bragg grating (FBG)
  • fiber-optic-based
  • oil and gas flowlines

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