Estimating geological CO2 storage security to deliver on climate mitigation

  title={Estimating geological CO2 storage security to deliver on climate mitigation},
  author={Juan Alcalde and Stephanie Flude and Mark I. Wilkinson and Gareth Johnson and Katriona Edlmann and Clare E. Bond and Vivian Scott and Stuart M. V. Gilfillan and Xenia Ogaya and R. Stuart Haszeldine},
  journal={Nature Communications},
Carbon capture and storage (CCS) can help nations meet their Paris CO2 reduction commitments cost-effectively. However, lack of confidence in geologic CO2 storage security remains a barrier to CCS implementation. Here we present a numerical program that calculates CO2 storage security and leakage to the atmosphere over 10,000 years. This combines quantitative estimates of geological subsurface CO2 retention, and of surface CO2 leakage. We calculate that realistically well-regulated storage in… 
420,000 year assessment of fault leakage rates shows geological carbon storage is secure
Natural leakage rates from a 420 ka paleo-record of CO2 leakage above a naturally occurring, faulted, CO2 reservoir in Arizona, USA are calculated, indicating this natural geological storage site is adequate to store CO2 for climate mitigation purposes.
Marine Monitoring for Offshore Geological Carbon Storage—A Review of Strategies, Technologies and Trends
Carbon capture and storage (CCS) could significantly contribute to reducing greenhouse gas emissions and reaching international climate goals. In this process, CO2 is captured and injected into
Maturing global CO2 storage resources on offshore continental margins to achieve 2DS emissions reductions
This paper demonstrates the geologic significance of global continental margins for providing broadly-equitable, geographically-relevant, and high-quality CO2 storage resources and indicates that 10–14 thousand CO2 injection wells will be needed globally by 2050.
What have we learnt about CO2 leakage in the context of commercial-scale CCS?
The viability of Carbon Capture and Storage (CCS) depends on the reliable containment of injected CO2 in the subsurface. Robust and cost-effective approaches to measure monitor and verify CO2
Uncertain storage prospects create a conundrum for carbon capture and storage ambitions
Grand hopes exist that carbon capture and storage can have a major decarbonization role at global, regional and sectoral scales. Those hopes rest on the narrative that an abundance of geological
Carbon dioxide storage through mineral carbonation
Carbon capture and storage (CCS) has a fundamental role in achieving the goals of the Paris Agreement to limit anthropogenic warming to 1.5–2 °C. Most ongoing CCS projects inject CO2 into sedimentary
An Overview of the Status and Challenges of CO2 Storage in Minerals and Geological Formations
Since the Industrial Revolution, anthropogenic carbon dioxide (CO2) emissions have grown exponentially, accumulating in the atmosphere and leading to global warming. According to the IPCC (IPCC
Screening, Monitoring, and Remediation of Legacy Wells to Improve Reservoir Integrity for Large-Scale CO2 Storage—An Example From the Smeaheia Structure in the Northern North Sea
Carbon capture and storage (CCS) is an inevitable action to achieve CO2 emission reduction targets including becoming net-zero by 2050. Increased efforts are therefore required to identify suitable
Sensitivity Analysis of Geomechanical Constraints in CO2 Storage to Screen Potential Sites in Deep Saline Aquifers
In order to tackle the exponential rise in global CO2 emissions, the Intergovernmental Panel on Climate Change (IPCC) proposed a carbon budget of 2,900 Gt to limit the rise in global temperature


Health, Safety and Environmental Risks of Underground Co2 Storage – Overview of Mechanisms and Current Knowledge
AbstractCO2 capture and storage (CCS) in geological reservoirs may be part of a strategy to reduce global anthropogenic CO2 emissions. Insight in the risks associated with underground CO2 storage is
Geologic storage of carbon dioxide as a climate change mitigation strategy: performance requirements and the implications of surface seepage
The probability that storage of carbon dioxide (CO2) in deep geologic formations will become an important climate change mitigation strategy depends on a number of factors, namely (1) public
Best practice for the storage of CO2 in saline aquifers - observations and guidelines from the SACS and CO2STORE projects
Carbon capture and storage is a subject around which there is a growing level of public awareness. A range of geological scenarios may be used for underground CO2 storage; declining oil and gas