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Combined Modelling Wellbore Integrity Network Meeting

Technical Report

1 October 2011

Event Proceedings

Storage

Samantha Neades

Citation: IEAGHG, "Combined Modelling Wellbore Integrity Network Meeting", 2011-13, October 2011.

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Publication Overview

This combined meeting of the IEAGHG Modelling and Wellbore Integrity networks was held from the 27th to the 29th of April 2011, in Perth, Australia, hosted by Curtin University and the University of Western Australia and sponsored by Shell, Chevron, Curtin University, the University of Western Australia and the Government of Western Australia Department of Mines and Petroleum. Seventy five delegates attended the meeting, representing 9 different countries. The three day event looked at the complexity of models, real projects (local and international), geomechanics and wellbore integrity, followed by a field visit to the site of the planned Collie Southwest CO₂ Hub. T

Publication Summary

A key point recognised during the meeting was that modelling is site-specific and should be done on a project-to-project basis. Simplified models can be useful as they allow exploration of a wide range of scenarios on a short time-scale – but this may not improve the overall understanding of the reservoir. The assessment of caprock systems is highly site-specific and has many knowledge gaps in which further research is needed. There is also a noticeable lack of data on reservoir stress paths – again, an important issue when looking at injection and geomechanics, and there is a need for further 1D and 2D pressure, temperature and flow control experiments when modelling leakage rates. There is a trust issue between regulators, operators and the public – more needs to be done in bridging the gaps between all stakeholders, public or otherwise. Modelling should be put into a better context to perhaps help with this communication issue – modelling doesn’t necessarily represent reality but is crucial to guide monitoring and risk management strategies. Mitigation is a crucial component of risk management strategies that requires early consideration in project planning.

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