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Australian Energy Producers Journal Australian Energy Producers Journal Society
Journal of Australian Energy Producers
RESEARCH ARTICLE (Non peer reviewed)

Brownfield modifications to convert existing gas production facilities for CCS operations

Christopher Jones A *
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- Author Affiliations

A Kent PLC, Perth, WA, Australia.




Christopher Jones has 13 years of experience in process engineering and currently is a Principal Process Engineer at Kent PLC. He underwent an accelerated Honours (First Class) program at university in chemical engineering and completed an internship in Germany. Chris has been exposed to a wide breadth of industry projects allowing him to apply unique design approaches when tackling challenges in traditional oil and gas and emerging new energy industries.

* Correspondence to: chris.jones@kentplc.com

Australian Energy Producers Journal 64 S143-S147 https://doi.org/10.1071/EP23061
Accepted: 20 March 2024  Published: 16 May 2024

© 2024 The Author(s) (or their employer(s)). Published by CSIRO Publishing on behalf of Australian Energy Producers.

Abstract

In recent years, traditional oil and gas operators have found novel means of extending the life of their assets and deferring onerous decommissioning costs by converting their facilities from gas production into carbon dioxide (CO2) injection. While the task of designing for CO2 may sound simple, CO2 injection works in counter-intuitive ways, with previously established heuristics derived from years of experience in gas condensate systems being quickly challenged as potentially dangerous. The world of designing CO2 systems is back-to-front compared with hydrocarbons; it isn’t simply a case of a change in flow direction. Some of the design challenges explored in this paper include: large density variability in CO2 systems where a small change in the ambient temperature can significantly impact the pressure of a shut-in system; optimal pressure ratings of the vents and drains systems and how previous safety margins may be unsafe; pipeline hydraulic modelling focussed on new areas outside of the traditional suite of analysis, such as assurance of the supercritical phase; understanding liquid water dropout being more of a concern than hydrate formation; injection wells counter-intuitively flowing from low pressure to high pressure; whether to vent CO2 above or below an offshore platform; and optimal liquefied CO2 storage vessel conditions and safeguarding.

Keywords: carbon capture utilisation and storage, carbon dioxide, CO2 design, CO2 injection, CO2 offshore, CO2 pipeline, CO2 storage.

Biographies

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Christopher Jones has 13 years of experience in process engineering and currently is a Principal Process Engineer at Kent PLC. He underwent an accelerated Honours (First Class) program at university in chemical engineering and completed an internship in Germany. Chris has been exposed to a wide breadth of industry projects allowing him to apply unique design approaches when tackling challenges in traditional oil and gas and emerging new energy industries.