Pore Scale Observations of Trapped CO2 in Mixed-Wet Carbonate Rock: Applications to Storage in Oil Field

Dataset title Pore Scale Observations of Trapped CO2 in Mixed-Wet Carbonate Rock: Applications to Storage in Oil Field
Dataset creators Hannah Menke, Imperial College London
Dr Ali Al-Menhali, Imperial College London
Qatar Carbonates And Carbon Storage Research Centre
Dataset theme Geoscientific Information
Dataset abstract We investigated the physical basis of this weakened trapping using pore scale observations of supercritical CO2 in mixed-wet carbonates. The wetting alteration induced by oil provided CO2-wet surfaces that served as conduits to flow. In situ measurements of contact angles showed that CO2 varied from nonwetting to wetting throughout the pore space, with contact angles ranging 25° <h; θ <h; 127°; in contrast, an inert gas, N2, was nonwetting with a smaller range of contact angle 24° <h; θ <h; 68°. Observations of trapped ganglia morphology showed that this wettability allowed CO2 to create large, connected, ganglia by inhabiting small pores in mixed-wet rocks. The connected ganglia persisted after three pore volumes of brine injection, facilitating the desaturation that leads to decreased trapping relative to water-wet systems. This data is associated with this open access publication: Environ. Sci. Technol. 2016, 50, 18, 10282-10290. https://doi.org/10.1021/acs.est.6b03111.
Dataset content dates 1st October 2016 – 31st October 2016
Dataset spatial coverage Not Applicable
Dataset supply format .txrm
.txm
.am
Dataset language English-United Kingdom
Dataset discovery metadata record Discovery Link to the dataset's BGS Discovery Metadata record
Dataset publisher British Geological Survey
Dataset publication date 25th September 2019
Dataset digital object identifier(DOI) 10.5285/c50bcb36-4588-4b10-98b6-d4c1466390ad
Dataset citation text Imperial College London, Qatar Carbonates And Carbon Storage Research Centre (2019): Pore Scale Observations of Trapped CO2 in Mixed-Wet Carbonate Rock: Applications to Storage in Oil Field. British Geological Survey. (Dataset). https://dx.doi.org/10.5285/c50bcb36-4588-4b10-98b6-d4c1466390ad
Constraints and terms of use This data set is delivered under the terms of the Open Government Licence, subject to the following acknowledgement accompanying any reproduced materials: "Imperial College London gratefully acknowledge permission to publish and funding from the Qatar Carbonates and Carbon Storage Research Centre (QCCSRC), provided jointly by Qatar Petroleum, Shell, and Qatar Science & Technology Park. Qatar Petroleum remain copyright owner."
Access the dataset https://www.bgs.ac.uk/services/ngdc/accessions/index.html#item130205