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Salting around downscaled CO2 injection wells

Abstract

Salting due to formation dry-out around CO2 injection wells in saline aquifers may decrease injectivity and increase fracturing risks. We have designed and conducted CO2 injection experiments with field relevant geometry, flow and boundary conditions. The results based on pressure readings and observation of precipitate indicate that injectivity decline is likely due to salting in the near-well region, and that backflow of reservoir brine may exacerbate the problem, in line with theoretical predictions. The results may contribute to recommendations for injection well shut-in periods to limit the risk of injectivity decline.

Category

Conference lecture

Language

English

Author(s)

Affiliation

  • SINTEF Industry / Applied Geoscience

Presented at

Australasian Exploration Geoscience Conference

Place

Perth

Date

07.09.2025 - 10.09.2025

Organizer

Australian Institute of Geoscientists

Date

10.09.2025

Year

2025

View this publication at Norwegian Research Information Repository