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Measurement & Prediction of Phase Behaviour of Carbon Dioxide Mixtures

Esther Forte¹, Amparo Galindo¹, Livio G. Ruffine¹ & J.P. Martin Trusler¹

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1. Imperial College

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Document Type:

Poster

Date:

Received 12 December 2008 17:09 UTC; Posted 12 December 2008

Subjects:

Chemistry, Earth & Environment

Tags:

• SAFT-VR
• carbon dioxide
• high pressure
• phase behaviour
• hydrocarbon
• experiment
• water
• modelling
• equilibrium

Abstract:

Acquiring a comprehensive understanding of the behaviour of carbon dioxide under reservoir conditions is essential for optimizing its usage in enhanced oil recovery (EOR) and for developing sequestration schemes. In order to obtain this understanding, it is necessary to study the physical properties and phase behaviour of mixtures of carbon dioxide with hydrocarbons and brines under conditions of high pressure. In this work we are addressing both the experimental and the theoretical aspects of this problem. A new apparatus, based on the static-analytical method, has been developed to measure phase equilibrium. The equipment comprises a high-pressure cell with sapphire windows for visual observation and phase sampling, with on-line gas chromatography analysis, for measuring the phase compositions. The experimental work is complemented with a theoretical modelling for these mixtures, using the statistical association fluid theory for potentials of variable range (SAFT-VR). As an example of the predictive capabilities of the equation, the fluid phase behaviour of the mixture (carbon dioxide + n-decane) is presented.

Collection:

Virtual Conference on Climate Change and CO2 Storage

Presented at:

Virtual conference on climate change and CO2 storage, 03 December 2008

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License:

This document is licensed to the public under the Creative Commons Attribution 3.0 License

How to cite this document:

Forte, Esther, Galindo, Amparo, Ruffine, Livio , and Trusler, J.P. Martin. Measurement & Prediction of Phase Behaviour of Carbon Dioxide Mixtures. Available from Nature Precedings <http://dx.doi.org/10.1038/npre.2008.2649.1> (2008)

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