Abstract
Carbon sequestration has recently become more widely recognized as a potential means of reducing atmospheric carbon dioxide levels. Understanding the tectonic relationship of carbon dioxide discharges and the sealing behavior of faults is conducive for predicting the long-term integrity of geological storage formations. Of primary concern is the influence of crustal deformation on the carbon dioxide leakage through fault zones during large-scale underground injection. This paper examines a record of carbon dioxide leakage from a faulted, natural carbon-dioxide-rich formation, and investigates the crustal tilt in the fault zones. Temporal changes in the crustal tilt reveal pulses of carbon dioxide concentrations ranging from 537.7 up to 1317.1 ppm, and the mean level represents 890.2 ppm. Of particular interest is that each high-frequency pulse coincides with the onset of local solid-earth tide. We show a significant correlation between the crustal tilt magnitude and amount of carbon dioxide leakage. We suggest that carbon dioxide leakage levels increase owing to fracture opening, potentially caused by changes in fault architecture and permeability structure of regions surrounding the faults.
Highlights
Received: August 24, 2021 Revised: October 7, 2021 Accepted: October 8, 2021Publisher: Taiwan Association for Aerosol Research ISSN: 1680-8584 print ISSN: 2071-1409 onlineCopyright: The Author(s)
Geological carbon sequestration is the deep injection of carbon dioxide into saline formations, depleted oil and gas reservoirs, and deep coal seams (Benson et al, 2008; Busch, 2008; Cai et al, 2019), as an alternative means either of reducing atmospheric carbon dioxide levels (Kampman et al, 2016; Chatterjee et al, 2019; Yadav et al, 2021; Basal et al, 2019), or of enhancing oil and natural gas recovery (Gunter et al, 2005; Friedmann et al, 2006; Liang et al, 2009; Huang and Tan, 2014; Yang, 2020; Rathnaweera and Ranjith, 2020)
From a survey of a record of carbon dioxide leakage from a faulted, natural carbon-dioxiderich formation, and of the crustal tilt in the fault zone, we show that temporal changes in the crustal tilt reveal pulses of carbon dioxide leakage levels, and especially that each high-frequency pulse coincides with the onset of local solid-earth tide
Summary
Received: August 24, 2021 Revised: October 7, 2021 Accepted: October 8, 2021Publisher: Taiwan Association for Aerosol Research ISSN: 1680-8584 print ISSN: 2071-1409 onlineCopyright: The Author(s). In the saline reservoirs there are two mechanisms to the key geochemical reactions. Geochemical reactions in the reservoir can be evaluated by considering dissolution rate and amount of the minerals present in the rock. Four recognized storage mechanisms, such as structural and stratigraphic trapping, residual phase trapping, solubility trapping and mineral trapping (Bickle, 2009; Yu et al, 2012; Soong et al, 2014) go into effect at multiple space and time scales to trap carbon dioxide in the shallow crust. Geological storage site characterization, carbon dioxide leakage detection, and injection-induced hazard assessment and management (Bickle, 2009; White 2009; Armitage et al, 2013; Ding et al, 2018; Ayayi et al, 2019; Zhu et al, 2021) are crucial issues on commercial large-scale underground injection. Of particular concern is the influence of geochemical reactions (Xu et al, 2004; Kampman et al, 2012; Gislason et al, 2014) on the sealing behaviour of faults (Kampman et al, 2016), the impact of stress regime and seismicity on fault reactivation (Talwani and Acree, 1984; Miller et al, 2004; Rutqvist, 2012; Verdon, 2014), and the geomechanical effect
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
