Water–rock–CO2 interactions in saline aquifers aimed for carbon dioxide storage: Experimental and numerical modeling studies of the Rio Bonito Formation (Permian), southern Brazil

Ketzer, João Marcelo Medina; Iglesias, Rodrigo S.; Einloft, Sandra; Dullius, Jeane; Ligabue, Rosane Angélica; Lima, Viviane de Almeida

doi:10.1016/j.apgeochem.2009.01.001

Cited by 158 publications

(100 citation statements)

References 23 publications

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“…CO 2 -water-rock interaction experiments represent a useful method to understand and explore the mechanisms and processes of geological storage (Ketzer et al, 2009) and to design safe underground CO 2 storage operations. Bertier et al (2006) built an experimental setup to evaluate the effect of CO 2 -water-rock interactions in three sandstone aquifers concluding that "CO 2 -water-rock interactions might significantly influence geological sequestration of CO 2 ".…”

Section: E Berrezueta Et Al: Qualitative and Quantitative Changes Imentioning

confidence: 99%

Qualitative and quantitative changes in detrital reservoir rocks caused by CO<sub>2</sub>–brine–rock interactions during first injection phases (Utrillas sandstones, northern Spain)

2016

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Abstract. The aim of this article is to describe and interpret qualitative and quantitative changes at rock matrix scale of lower-upper Cretaceous sandstones exposed to supercritical (SC) CO 2 and brine. The effects of experimental injection of CO 2 -rich brine during the first injection phases were studied at rock matrix scale, in a potential deep sedimentary reservoir in northern Spain (Utrillas unit, at the base of the Cenozoic Duero Basin).Experimental CO 2 -rich brine was exposed to sandstone in a reactor chamber under realistic conditions of deep saline formations (P ≈ 7.8 MPa, T ≈ 38 • C and 24 h exposure time). After the experiment, exposed and non-exposed equivalent sample sets were compared with the aim of assessing possible changes due to the effect of the CO 2 -rich brine exposure. Optical microscopy (OpM) and scanning electron microscopy (SEM) aided by optical image analysis (OIA) were used to compare the rock samples and get qualitative and quantitative information about mineralogy, texture and pore network distribution. Complementary chemical analyses were performed to refine the mineralogical information and to obtain whole rock geochemical data. Brine composition was also analyzed before and after the experiment.The petrographic study of contiguous sandstone samples (more external area of sample blocks) before and after CO 2 -rich brine injection indicates an evolution of the pore network (porosity increase ≈ 2 %). It is probable that these measured pore changes could be due to intergranular quartz matrix detachment and partial removal from the rock sample, considering them as the early features produced by the CO 2 -rich brine. Nevertheless, the whole rock and brine chemical analyses after interaction with CO 2 -rich brine do not present important changes in the mineralogical and chemical configuration of the rock with respect to initial conditions, ruling out relevant precipitation or dissolution at these early stages to rock-block scale. These results, simulating the CO 2 injection near the injection well during the first phases (24 h) indicate that, in this environment where CO 2 enriches the brine, the mixture principally generates local mineralogical/textural readjustments on the external area of the samples studied.The application of OpM, SEM and optical image analysis have allowed an exhaustive characterization of the sandstones studied. The procedure followed, the porosity characterization and the chemical analysis allowed a preliminary approximation of the CO 2 -brine-rock interactions and could be applied to similar experimental injection tests.

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Section: E Berrezueta Et Al: Qualitative and Quantitative Changes Imentioning

confidence: 99%

Qualitative and quantitative changes in detrital reservoir rocks caused by CO<sub>2</sub>–brine–rock interactions during first injection phases (Utrillas sandstones, northern Spain)

2016

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“…These solutions can be totally inorganic or they can contain small organic species which affect the formation and persistence of ACC (13)(14)(15)(16)(17)(18)(19)(20). Increasing interest in CO 2 sequestration has led to proposals and pilot projects in which large plumes of supercritical carbon dioxide would be introduced into deep saline aquifers (21)(22)(23)(24)(25). ACC may be produced as an initial reaction product between the CO 2 and the aqueous phase, with mineral surfaces and small pores acting as possible nucleation sites (26).…”

mentioning

confidence: 99%

Transformation and crystallization energetics of synthetic and biogenic amorphous calcium carbonate

Radha

Forbes

Killian

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

420

449

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Amorphous calcium carbonate (ACC) is a metastable phase often observed during low temperature inorganic synthesis and biomineralization. ACC transforms with aging or heating into a less hydrated form, and with time crystallizes to calcite or aragonite. The energetics of transformation and crystallization of synthetic and biogenic (extracted from California purple sea urchin larval spicules, Strongylocentrotus purpuratus) ACC were studied using isothermal acid solution calorimetry and differential scanning calorimetry. Transformation and crystallization of ACC can follow an energetically downhill sequence: more metastable hydrated ACC → less metastable hydrated ACC ⇒ anhydrous ACC ∼ biogenic anhydrous ACC ⇒ vaterite → aragonite → calcite. In a given reaction sequence, not all these phases need to occur. The transformations involve a series of ordering, dehydration, and crystallization processes, each lowering the enthalpy (and free energy) of the system, with crystallization of the dehydrated amorphous material lowering the enthalpy the most. ACC is much more metastable with respect to calcite than the crystalline polymorphs vaterite or aragonite. The anhydrous ACC is less metastable than the hydrated, implying that the structural reorganization during dehydration is exothermic and irreversible. Dehydrated synthetic and anhydrous biogenic ACC are similar in enthalpy. The transformation sequence observed in biomineralization could be mainly energetically driven; the first phase deposited is hydrated ACC, which then converts to anhydrous ACC, and finally crystallizes to calcite. The initial formation of ACC may be a first step in the precipitation of calcite under a wide variety of conditions, including geological CO 2 sequestration. amorphous calcium carbonate (ACC) | calorimetry | crystallization enthalpy | sea urchin larval spicules | synthetic and biogenic ACC

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“…A very small quantity of gypsum precipitation has been observed in laboratory experiments conducted on sandstones of the saline aquifer of the Rio Bonito Formation, Paranà Basin in Brazil, suggesting pyrite oxidation though it was not verified in the numerical modeling (Ketzer et al 2009). In our simulation, we allow gypsum to precipitate though simulations predict a saturation index for the solution slightly under-saturated with gypsum without preventing the sulfur release.…”

Section: Discussionmentioning

confidence: 99%

Modeling of CO2 Leakage up Through an Abandoned Well from Deep Saline Aquifer to Shallow Fresh Groundwaters

et al. 2011

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This article presents a numerical modeling application using the code TOUGHREACT of a leakage scenario occurring during a CO 2 geological storage performed in the Jurassic Dogger formation in the Paris Basin. This geological formation has been intensively used for geothermal purposes and is now under consideration as a site for the French national program of reducing greenhouse gas emissions and CO 2 geological storage. Albian sandstone, situated above the Dogger limestone is a major strategic potable water aquifer; the impacts of leaking CO 2 due to potential integrity failure have therefore to be investigated. The present case study illustrates both the capacity and the limitations of numerical tools to address such a critical issue.The physical and chemical processes simulated in this study have been restricted to:(i) supercritical CO 2 injection and storage within the Dogger reservoir aquifer, (ii) CO 2 upwards migration through the leakage zone represented as a 1D vertical porous medium to simulate the cement-rock formation interface in the abandoned well (iii) impacts on the Albian aquifer water quality in terms of chemical composition and the mineral phases representative of the porous rock by estimating fluid-rock interactions in both aquifers. 2Because of CPU time and memory constraints, approximation and simplification regarding the geometry of the geological structure, the mineralogical assemblages and the injection period (up to 5 years) have been applied to the system, resulting in limited analysis of the estimated impacts.The CO 2 migration rate and the quantity of CO 2 arriving as free gas and dissolving, firstly in the storage water and secondly in the water of the overlying aquifer, are calculated. CO 2 dissolution into the Dogger aquifer induces a pH drop from about 7.3 to 4.9 limited by calcite dissolution buffering. Glauconite present in the Albian aquifer also dissolves, causing an increase of the silicon and aluminium in solution and triggering the precipitation of kaolinite and quartz around the intrusion point. A sensitivity analysis of the leakage rate according to the location of the leaky well and the variability of the petro-physical properties of the reservoir, the leaky well zone and the Albian aquifers is also provided.

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Water–rock–CO2 interactions in saline aquifers aimed for carbon dioxide storage: Experimental and numerical modeling studies of the Rio Bonito Formation (Permian), southern Brazil

Cited by 158 publications

References 23 publications

Qualitative and quantitative changes in detrital reservoir rocks caused by CO<sub>2</sub>–brine–rock interactions during first injection phases (Utrillas sandstones, northern Spain)

Qualitative and quantitative changes in detrital reservoir rocks caused by CO<sub>2</sub>–brine–rock interactions during first injection phases (Utrillas sandstones, northern Spain)

Transformation and crystallization energetics of synthetic and biogenic amorphous calcium carbonate

Modeling of CO2 Leakage up Through an Abandoned Well from Deep Saline Aquifer to Shallow Fresh Groundwaters

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Water–rock–CO2 interactions in saline aquifers aimed for carbon dioxide storage: Experimental and numerical modeling studies of the Rio Bonito Formation (Permian), southern Brazil

Cited by 158 publications

References 23 publications

Qualitative and quantitative changes in detrital reservoir rocks caused by CO&lt;sub&gt;2&lt;/sub&gt;–brine–rock interactions during first injection phases (Utrillas sandstones, northern Spain)

Qualitative and quantitative changes in detrital reservoir rocks caused by CO&lt;sub&gt;2&lt;/sub&gt;–brine–rock interactions during first injection phases (Utrillas sandstones, northern Spain)

Transformation and crystallization energetics of synthetic and biogenic amorphous calcium carbonate

Modeling of CO2 Leakage up Through an Abandoned Well from Deep Saline Aquifer to Shallow Fresh Groundwaters

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Qualitative and quantitative changes in detrital reservoir rocks caused by CO<sub>2</sub>–brine–rock interactions during first injection phases (Utrillas sandstones, northern Spain)

Qualitative and quantitative changes in detrital reservoir rocks caused by CO<sub>2</sub>–brine–rock interactions during first injection phases (Utrillas sandstones, northern Spain)