U.S. Department of energy’s site screening, site selection, and initial characterization for storage of CO2 in deep geological formations

Rodosta, Traci; Litynski, John; Plasynski, Sean I.; Hickman, T. Scott; Frailey, Scott M.; Myer, Larry R.

doi:10.1016/j.egypro.2011.02.427

Cited by 25 publications

(4 citation statements)

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“…Economically, a low capital outlay on operational frameworks (infrastructure) and an ability to sequester buoyant fluids safely in geological media and time are some of the reasons that make depleted oil and gas reservoirs appealing [99,102]. Added to that is the fact that they have two other advantages: they once were producing reservoirs so they'll have been studied immensely through their geology, core and well logs and production logs so they will have rich historical data, and secondly, because they have a history of trapping oil and gas prior, they therefore make good candidates to trap fluids being injected [103]. Depleted gas reservoirs are also understood to be a more secure outlet for injection than other geological receptacles [102] since saline aquifers may be subject to a buildup of pressure over a region due to water's mobility [104].…”

Section: Role In Geosequestrationmentioning

confidence: 99%

Hydrogen sulphide

Ofori

2023

Sulfur Dioxide Chemistry and Environmental Impact [Working Title]

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Hydrogen sulphide (H₂S), a highly toxic and corrosive molecule, is typically found in hydrocarbon reservoirs, sewers and in the waste industry. It can be extremely problematic during drilling, production and processing. This chapter offers a synopsis of H₂S, which is sulphur in its most reduced form of all its numerous oxidation states. It delves briefly into H₂S’s history on planet earth before there was life all through to its diminishment during the latter Proterozoic era to present day. It also investigates its various forms of generation and production, and its effect and impact especially as an occupation-based hazard. Its utilisation in enhanced oil recovery (EOR) as a standalone or together with carbon dioxide (CO₂) and its role in geosequestration together with CO₂ is explored.

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Section: Role In Geosequestrationmentioning

confidence: 99%

Hydrogen sulphide

Ofori

2023

Sulfur Dioxide Chemistry and Environmental Impact [Working Title]

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“…(By way of contrast, most nations will have only a single storage site for high-level nuclear waste). Large-scale failures of containment or other negative outcomes in one country could then have 'ripple effects' in terms of public perception of risk, whether or not actual performance had been achieving its objectives (Price and Oldenburg, 2009;Rodosta et al, 2011).…”

Section: Supportive Public Policy Frameworkmentioning

confidence: 99%

Environmental scan and issue awareness: risk management challenges for CCS

Leiss

Krewski

2019

IJRAM

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Long lists of issues relevant to carbon capture and storage projects have been provided in a number of sources, encompassing the broad categories of technological risks, health and environmental risks and societal risks. From these long lists a selection of ten major issues, broken down into three broad categories, has been made. The selected issues are: 1) government and industry factors (competent regulatory oversight; adequate risk assessment and risk management frameworks; and supportive public policy architecture); 2) environmental risk factors (adequate site-specific characterisations of geological formations for CCS storage sites worldwide; credible monitoring of storage site performance; and the possibility of leaking from storage); 3) socioeconomic factors (tolerable economic costs; public perceptions of risks and benefits; information provision, effective communication and stakeholder engagement; and social and public acceptability, including the use of decision support mechanisms). The paper emphasises that what is unique about carbon capture and storage, considered as a major set of risk issues of global proportions, is how proactively these relevant major risks and risk factors have been identified and characterised by major institutional actors, especially industry and governments.

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“…However, the reservoir conditions and rock properties can affect the dominant storage mechanism, and consequentially the storage effectiveness. The suitability of the reservoir depends on a multitude of factors: the depth of the reservoir; the pressure gradient; its state of stress and faulting; reservoir and seal integrity; the salinity of the reservoir fluids; and most significantly, the total storage capacity based on the porosity and the lateral and vertical extents of the formation (Rodosta et al, 2011;Bachu, 2016;NETL, 2017). These factors chiefly deal with the initial reservoir conditions, and they provide screening criteria for a preliminary analysis.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis of Geomechanical Constraints in CO2 Storage to Screen Potential Sites in Deep Saline Aquifers

2021

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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 levels to 2°C above the pre-industrial level. Apart from curbing our emissions, carbon sequestration can play a significant role in meeting these ambitious goals. More than 500 Gt of CO2 will need to be stored underground by the end of this century to make a meaningful impact. Global capacity for CO2 storage far exceeds this requirement, the majority of which resides in unexplored deep aquifers. To identify potential storage sites and quantify their storage capacities, prospective aquifers or reservoirs need to be screened based on properties that affect the retention of CO2 in porous rocks. Apart from the total volume of a reservoir, the storage potential is largely constrained by an increase in pore pressure during the early years of injection and by migration of the CO2 plume in the long term. The reservoir properties affect both the pressure buildup and the plume front below the caprock. However, not many studies have quantified these effects. The current analysis computes the effect of rock properties (porosity, permeability, permeability anisotropy, pore compressibility, and formation water salinity) and injection rate on both these parameters by simulating CO2 injection at the bottom of a 2D mesh grid with hydrostatic boundary conditions. The study found that the most significant property in the sensitivity analysis was permeability. Porosity too affected the CO2 plume migration substantially, with higher porosities considerably delaying horizontal and vertical migration. Injection rate impacted both the pressure rise and plume migration consistently. Thus, in screening potential storage sites, we can infer that permeability is the dominant criterion when the pore pressure is closer to the minimum principal stress in the rocks, due to which injection rate needs to be managed with greater caution. Porosity is more significant when the lateral extents of the reservoir limit the storage potential.

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U.S. Department of energy’s site screening, site selection, and initial characterization for storage of CO2 in deep geological formations

Cited by 25 publications

References 0 publications

Hydrogen sulphide

Hydrogen sulphide

Environmental scan and issue awareness: risk management challenges for CCS

Sensitivity Analysis of Geomechanical Constraints in CO2 Storage to Screen Potential Sites in Deep Saline Aquifers

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