scholarly journals Uncertainty in regional estimates of capacity for carbon capture and storage

2019 ◽  
Author(s):  
Mark Wilkinson ◽  
Debbie Polson
Keyword(s):  
Carbon Capture ◽  
Storage Capacity ◽  
Carbon Capture And Storage ◽  
Saline Aquifers ◽  
Storage Site ◽  
Limited Data ◽  
Wide Range ◽  
Regional Estimates ◽  
And Storage ◽  
Substantial Uncertainty

Abstract. Carbon capture and storage (CCS) is a potentially important technology for the mitigation of industrial CO2 emissions, however the majority of the subsurface storage capacity is in geological strata for which there is relatively little information, the so-called saline aquifers. Published estimates of the potential storage capacity of such formations, based on limited data, often give no indication of the uncertainty, despite there being substantial uncertainty associated with the data used to calculate such estimates. Using only publicly available data, a group of experts independently estimated the storage capacity of 7 regional saline aquifers. The experts produced a wide range of estimates for each aquifer due a combination of using different published values for some variables and differences in their judgements of the aquifer properties such as area and thickness. The range of storage estimates produced by the experts shows that there is significant uncertainty in such estimates, in particular the experts' range does not capture the highest possible capacity estimates, meaning that by not accounting for uncertainty, such regional estimates may underestimate the true storage capacity. The result is applicable to single values of storage capacity of regional potential, but not to detailed studies of a single storage site.

scholarly journals Uncertainty in regional estimates of capacity for carbon capture and storage

Solid Earth ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 1707-1715 ◽  
Author(s):  
Mark Wilkinson ◽  
Debbie Polson
Keyword(s):  
Carbon Capture ◽  
Storage Capacity ◽  
Significant Proportion ◽  
Carbon Capture And Storage ◽  
Saline Aquifers ◽  
Storage Site ◽  
Limited Data ◽  
Wide Range ◽  
Regional Estimates ◽  
And Storage

Abstract. Carbon capture and storage (CCS) is a potentially important technology for the mitigation of industrial CO2 emissions. However, the majority of the subsurface storage capacity is in saline aquifers, for which there is relatively little information. Published estimates of the potential storage capacity of such formations, based on limited data, often give no indication of the uncertainty, despite there being substantial uncertainty associated with the data used to calculate such estimates. Here, we test the hypothesis that the uncertainty in such estimates is a significant proportion of the estimated storage capacity, and should hence be evaluated as a part of any assessment. Using only publicly available data, a group of 13 experts independently estimated the storage capacity of seven regional saline aquifers. The experts produced a wide range of estimates for each aquifer due to a combination of using different published values for some variables and differences in their judgements of the aquifer properties such as area and thickness. The range of storage estimates produced by the experts shows that there is significant uncertainty in such estimates; in particular, the experts' range does not capture the highest possible capacity estimates. This means that by not accounting for uncertainty, such regional estimates may underestimate the true storage capacity. The result is applicable to single values of storage capacity of regional potential but not to detailed studies of a single storage site.

scholarly journals Periodic CO2 Injection for Improved Storage Capacity and Pressure Management under Intermittent CO2 Supply

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 566
Author(s):  
Anton Shchipanov ◽  
Lars Kollbotn ◽  
Mauro Encinas ◽  
Ingebret Fjelde ◽  
Roman Berenblyum
Keyword(s):  
Feasibility Study ◽  
Carbon Capture ◽  
Storage Capacity ◽  
Carbon Capture And Storage ◽  
Geological Structure ◽  
Co2 Injection ◽  
Storage Site ◽  
Pressure Management ◽  
Field Scale ◽  
And Storage

Storing CO2 in geological formations is an important component of reducing greenhouse gases emissions. The Carbon Capture and Storage (CCS) industry is now in its establishing phase, and if successful, massive storage volumes would be needed. It will hence be important to utilize each storage site to its maximum, without challenging the formation integrity. For different reasons, supply of CO2 to the injection sites may be periodical or unstable, often considered as a risk element reducing the overall efficiency and economics of CCS projects. In this paper we present outcomes of investigations focusing on a variety of positive aspects of periodic CO2 injection, including pressure management and storage capacity, also highlighting reservoir monitoring opportunities. A feasibility study of periodic injection into an infinite saline aquifer using a mechanistic reservoir model has indicated significant improvement in storage capacity compared to continuous injection. The reservoir pressure and CO2 plume behavior were further studied revealing a ‘CO2 expansion squeeze’ effect that governs the improved storage capacity observed in the feasibility study. Finally, the improved pressure measurement and storage capacity by periodic injection was confirmed by field-scale simulations based on a real geological set-up. The field-scale simulations have confirmed that ‘CO2 expansion squeeze’ governs the positive effect, which is also influenced by well location in the geological structure and aquifer size, while CO2 dissolution in water showed minor influence. Additional reservoir effects and risks not covered in this paper are then highlighted as a scope for further studies. The value of the periodic injection with intermittent CO2 supply is finally discussed in the context of deployment and integration of this technology in the establishing CCS industry.

Fault and top seals thematic collection: a perspective

2021 ◽  
pp. petgeo2020-136
Author(s):  
Quentin Fisher ◽  
Frauke Schaefer ◽  
Ieva Kaminskaite ◽  
David N Dewhurst ◽  
Graham Yielding
Keyword(s):  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Petroleum Reservoirs ◽  
Radioactive Waste Disposal ◽  
Content Type ◽  
Sealing Capacity ◽  
Wide Range ◽  
Research Findings ◽  
New Research ◽  
And Storage

Predicting the sealing capacity of faults and caprocks has been a long-standing uncertainty for those involved in the exploration, appraisal and development of petroleum reservoirs. In more recent years, interest in the topic has increased in a wide range of other applications, particularly those related to the decarbonization of our energy supply such as carbon capture and storage (CCS), radioactive waste disposal, geothermal energy production and underground energy storage (e.g. compressed air, hydrogen). Knowledge of how faults impact fluid flow is also important for management of drinking water supplies. To communicate new advances in research in these areas, the EAGE organized the first international conference on Fault and Top Seals in 2003. These conferences have continued to be held at roughly 4 yearly intervals and have brought together scientists from a wide range of disciplines to discuss new research findings and workflows relevant to predicting fault and top seal behaviour, as well as presenting case studies covering both successful and unsuccessful attempts to predict sealing capacity.Thematic collection: This article is part of the Fault and top seals collection available at: https://www.lyellcollection.org/cc/fault-and-top-seals-2019

scholarly journals The Endurance CO2 storage site, Blocks 42/25 and 43/21, UK North Sea

2020 ◽  
Vol 52 (1) ◽  
pp. 163-171 ◽  
Author(s):  
Jon G. Gluyas ◽  
Usman Bagudu
Keyword(s):  
Carbon Capture ◽  
Co2 Storage ◽  
Carbon Capture And Storage ◽  
Lower Triassic ◽  
Injection Rate ◽  
Government Support ◽  
Storage Site ◽  
Sandstone Formation ◽  
The Uk ◽  
And Storage

AbstractThe Endurance, four-way, dip-closed structure in UK Blocks 42/25 and 43/21 occurs over a salt swell diapir and within Triassic and younger strata. The Lower Triassic Bunter Sandstone Formation reservoir within the structure was tested twice for natural gas (in 1970 and 1990) but both wells were dry. The reservoir is both thick and high quality and, as such, an excellent candidate site for subsurface CO2 storage.In 2013 a consortium led by National Grid Carbon drilled an appraisal well on the structure and undertook an injection test ahead of a planned development of Endurance as the first bespoke storage site on the UK Continental Shelf with an expected injection rate of 2.68 × 106 t of dense phase CO2 each year for 20 years. The site was not developed following the UK Government's removal of financial support for carbon capture and storage (CCS) demonstration projects, but it is hoped with the recent March 2020 Budget that government support for CCS may now be back on track.

scholarly journals The application, required investments and operational costs of geological CO2 sequestration: a case study

2019 ◽  
Vol 8 (6) ◽  
pp. e12861023 ◽  
Author(s):  
Pedro Junior Zucatelli ◽  
Ana Paula Meneguelo ◽  
Gisele de Lorena Diniz Chaves ◽  
Gisele de Lorena Diniz Chaves ◽  
Marielce de Cassia Ribeiro Tosta
Keyword(s):  
Carbon Capture ◽  
Large Scale ◽  
Co2 Storage ◽  
Carbon Capture And Storage ◽  
Saline Aquifers ◽  
Natural Systems ◽  
Geological Co2 Sequestration ◽  
And Storage ◽  
Geological Formations

The integrity of natural systems is already at risk because of climate change caused by the intense emissions of greenhouse gases in the atmosphere. The goal of geological carbon sequestration is to capture, transport and store CO2 in appropriate geological formations. In this review, we address the geological environments conducive to the application of CCS projects (Carbon Capture and Storage), the phases that make up these projects, and their associated investment and operating costs. Furthermore it is presented the calculations of the estimated financial profitability of different types of projects in Brazil. Using mathematical models, it can be concluded that the Roncador field presents higher gross revenue when the amount of extra oil that can be retrieved is 9.3% (US$ 48.55 billions approximately in 2018). Additional calculations show that the Paraná saline aquifer has the highest gross revenue (US$ 6.90 trillions in 2018) when compared to the Solimões (US$ 3.76 trillions approximately in 2018) and Santos saline aquifers (US$ 2.21 trillions approximately in 2018) if a CCS project were to be employed. Therefore, the proposed Carbon Capture and Storage method in this study is an important scientific contribution for reliable large-scale CO2 storage in Brazil.

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