Experimental observation of channel propagation at variable effective stresses on carbonate samples

Florent Brondolo*, Chris McDermott, Katriona Edlmann, Andrew Fraser-Harris

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

Flow rate through carbonate rocks is known to have a major impact on carbonate dissolution and permeability evolution. Acidic fluids and large flow rate will lead to a single channel connecting inlet and outlet of a core sample, while very small flow rate will result in front dissolution at the inlet of the sample. Golfier et al. (2002) takes into account these two variables by mapping the expected channel architecture as a function of the Damköhler and Péclet numbers. In this study we offer effective stress as a third variable influencing carbonate dissolution by experimentally and numerically investigating its effect on homogeneous Indiana limestone. This comparative study confirms that the prime variable for carbonate dissolution is related to the velocity of the fluid at the inlet of a sample. In addition, we found that effective stress also plays a significant secondary role as a permeability and calcium dissolution stimulator.

Original languageEnglish
Pages3623-3627
Number of pages5
DOIs
Publication statusPublished - 1 Jan 2019
Event88th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2018 - Anaheim, United States
Duration: 14 Oct 201819 Oct 2018

Conference

Conference88th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2018
Country/TerritoryUnited States
CityAnaheim
Period14/10/1819/10/18

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