36 Progress Towards Geologic CO2 Storage in the Eastern United States

Tuesday, 16 April 2024
8:00 AM - 12:00 PM
Victoria

GEOLOGIC CO2 SEQUESTRATION IN CARBONATE RESERVOIRS - A REVIEW

Paper number: 36-6
Program: Theme Sessions
Time: 9:25 AM – 9:45 AM

Authors

Abstract

Over the past three decades, there has been a significant increase in both the adoption and implementation of geologic CO2 sequestration, a mature and well-established method for reducing greenhouse gas emissions. Numerous research efforts have been geared toward subsurface engineering for effective containment and project scale-up in various types of geologic reservoirs, including sandstones, shales, carbonates, ultramafic, and basalts. However, only a handful of full-scale or pilot projects have been conducted in carbonate reservoirs despite their favorable petrophysical characteristics and wide prevalence across the globe. The principal challenge for CO2 sequestration in carbonate reservoirs is concerns surrounding the effective containment of CO2 due to high reactivity, heterogeneity, compartmentalization, mineralogical and other geological complexities. Nonetheless, carbonate reservoirs are often characterized by porosity and permeability that are favorable for CO2 sequestration, and the frequently occur below and low-permeability cap rock (e.g., shale and/or anhydrite). Moreover, carbonate formations are prevalent in many geologic basins worldwide and in close proximity to anthropogenic CO2 sources, thus, with proper engineering, thus, will play a significant role in geologic CO2 sequestration if global emissions reduction targets are to be achieved.

This paper presents a comprehensive review of carbonate reservoirs in the context of geologic CO2 sequestration. We explore the unique challenges and opportunities associated with carbonate reservoirs, including their geology, global distribution, and natural accumulations of CO2. Insights are drawn from a wide range of sources, including experimental studies, numerical modeling, reactive transport modeling, and pilot projects/studies. We highlight the various factors that influence effective CO2 storage and containment, providing recommendations for successful geologic CO2 sequestration in carbonate reservoirs.

Geological Society of America Abstracts with Programs. Vol. 56, No. 2

doi: 10.1130/abs/2024SE-398391

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