Research Program 2, Project 1 – Developing a Tool for Predicting the Lifespan and Corrosion Behaviour of Decommissioned Oil and Gas Metallic Infrastructure in the Ocean

Full Project Title

Developing a Tool for Predicting the Lifespan and Corrosion Behaviour of Decommissioned Oil and Gas Metallic Infrastructure in the Ocean

NDRI Reference

Project 2.1

Project Proponents

Deakin University & University of Newcastle

Delivery

Q2 2022

Background

The deterioration/corrosion of metals in the ocean has been studied extensively in the past. It is generally shown that, while the actual mass loss values and the timing of corrosion depend very much on the metal or alloy and on the environment, the overall characteristic is pervasive and could be expressed as a model.

However, corrosion models reported in the literature are usually based on limited data sets from a number of long-term exposure or laboratory tests with many corrosion rate influencing factors not well understood. These knowledge gaps limit the applicability of these models for predicting the rate of corrosion of practical marine infrastructure

This project will produce a practical tool for quantifying the long-term trends and rates of degradation/corrosion of metallic infrastructure in the ocean. 

 

Objectives

This project aims to address the knowledge gap in metal degradation models. It will:

  1. Perform an extensive review of historical literature in order to extract a wide range of marine corrosion data from a variety of field exposure, industry and academic sources, with particular focus on long-term seawater corrosion trends/rates/patterns as a function of variations in seawater characteristic.
  2. Perform carefully designed in-situ corrosion monitoring experiments to fill critical gaps in the literature.
  3. Data from both the literature and corrosion monitoring experiments will be used to fit to major corrosion models.