Evolution of hydrogen sulfide in sour saline aquifers during carbon dioxide sequestration

Ghaderi, Seyyed M.; Keith, David W.; Lavoie, Rob; Leonenko, Yuri

doi:10.1016/j.ijggc.2010.09.008

Cited by 18 publications

(13 citation statements)

References 15 publications

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“…Some formations waters may contain dissolved CH 4 and/or H 2 S, as documented by Taggart (2010), Ghaderi et al (2011) and Doughty and Freifeld (2012). Field observations and/or numerical modeling of these cases have shown that pre-existing gases will be released from the formation water into the injected gas phase.…”

Section: Co 2 Purity In Transportation Systemsmentioning

confidence: 99%

“…This means that injection of CO 2 /H 2 S mixtures will result in very little difference in the final pH of the water at equilibrium compared to the pure CO 2 stream. However, in the case of injection of CO 2 into H 2 S-bearing (sour) waters, the acidification associated with CO 2 injection will transform the bulk of any bisulphide (HS − ) present in the displaced water to the volatile form H 2 S (via Reaction (3) in reverse), some of which will then partition into the gas phase (Ghaderi et al, 2011).…”

Section: Hydrolysis Reactionsmentioning

confidence: 99%

“…The effect is not expected to be significant since both the molar and the weight density of H 2 S-CO 2 mixtures are comparable or greater than to the densities of pure CO 2 (see Ghaderi et al, 2011 andIEAGHG, 2011 for typical results). In fact, the greater solubility of H 2 S in the formation water may lead to net loss of volume from the gas phase, and a hence a smaller plume than for pure CO 2 injection.…”

Section: Hydrogen Sulphide (H 2 S)mentioning

confidence: 99%

“…Injection of a pure CO 2 stream into an H 2 S-bearing aquifer was modelled by Ghaderi et al (2011) using the compositional reservoir simulator GEM (CMG, 2010). Only neutral gas solubility is treated in these simulations; hydrolysis and mineral reactions were not considered.…”

Section: Hydrogen Sulphide (H 2 S)mentioning

confidence: 99%

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Subsurface geochemical fate and effects of impurities contained in a CO2 stream injected into a deep saline aquifer: What is known

Talman

2015

International Journal of Greenhouse Gas Control

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Section: Co 2 Purity In Transportation Systemsmentioning

confidence: 99%

Section: Hydrolysis Reactionsmentioning

confidence: 99%

Section: Hydrogen Sulphide (H 2 S)mentioning

confidence: 99%

Section: Hydrogen Sulphide (H 2 S)mentioning

confidence: 99%

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Subsurface geochemical fate and effects of impurities contained in a CO2 stream injected into a deep saline aquifer: What is known

Talman

2015

International Journal of Greenhouse Gas Control

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“…A comprehensive study of this phenomenon has been made and all detailed results are presented elsewhere [13].…”

Section: H 2 S Issuementioning

confidence: 99%

Reservoir modeling for Wabamun lake sequestration project

Ghaderi

Leonenko

2015

Energy Science & Engineering

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A study, entitled "Wabamun Lake Sequestration Project" or "WASP," was performed to evaluate large-scale CO 2 storage opportunities in the Wabamun area including potential risks. The project examined the feasibility of storing 20 megatons (Mt) of CO 2 per year over 50 years. This scale is one order of magnitude larger than the typical benchmark (1 Mt/year) used in academic research and commercial projects that are currently in place or under review. The study was conducted by a group of researchers from several universities as well as industry consultants. This study presents an overview of the reservoir modeling part of this study, which the authors were responsible for. The main objectives of the reservoir modeling for WASP project were as follows: (1) estimation of storage capacity (traditionally, this value is projected based on the available pore space, but we have an additional practical consideration: the maximum amount one can inject within short period of time [~50 years] and within a localized injection area [~30 km 9 90 km]); (2) investigation of CO 2 plume movement and pressure distribution during and after injection including the effect of formation dip angle on the plume shape and its migration; (3) investigation of the long-term fate of injection associated with free phase CO 2 (risks of leakage) and aquifer pressurization (possible geomechanical changes and related phenomena); (4) investigation of the phase behavior of H 2 S initially available and dissolved in brine during CO 2 sequestration process. The WASP reservoir modeling study mentioned above led to a few important findings. The most important one is that, when CO 2 is being injected into a sour aquifer, initially dissolved H 2 S will release into the expanding CO 2 plume and accumulate at the leading edge of the plume. Also, the large-scale injection scheme (20 Mt/ year), which requires multi well injectors, provides very different pressure response compared to a one well (1 Mt/year) scenario.

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Dynamic Solubility of Acid Gases in a Deep Brine Aquifer

Ali¹,

Bentley²

2019

The Three Sisters

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Evolution of hydrogen sulfide in sour saline aquifers during carbon dioxide sequestration

Cited by 18 publications

References 15 publications

Subsurface geochemical fate and effects of impurities contained in a CO2 stream injected into a deep saline aquifer: What is known

Subsurface geochemical fate and effects of impurities contained in a CO2 stream injected into a deep saline aquifer: What is known

Reservoir modeling for Wabamun lake sequestration project

Dynamic Solubility of Acid Gases in a Deep Brine Aquifer

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