Salt clogging during supercritical CO2 injection into a downscaled borehole model

Berntsen, A. N.; Todorović, Jelena; Raphaug, Martin; Torsæter, Malin; Panduro, Elvia Anabela Chavez; Gawel, Kamila

doi:10.1016/j.ijggc.2019.04.009

Cited by 28 publications

(12 citation statements)

References 52 publications

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“…2,42 It can partially or entirely clog pores and throat in the reservoir rock. 3,32,34,35,56,57 Moreover, it can seal cracks and fractures inside well-casing cement. 58 Therefore, mineral precipitation can be undesired when it negatively affects pore space geometry via deteriorating injectivity and storage capacity.…”

Section: Implications For Thermo−hydro−mechanical−chemical Processesmentioning

confidence: 99%

“…Mineral nucleation, precipitation, and growth might be considered a blessing or a threat depending on the system and process in which it takes place . For instance, in geological CO 2 storage, precipitation can occur in fracture networks that can serve as the primary fluid flow conduit inside reservoirs , or may serve as leakage pathways inside caprock units. , It can partially or entirely clog pores and throat in the reservoir rock. ,,,,, Moreover, it can seal cracks and fractures inside well-casing cement . Therefore, mineral precipitation can be undesired when it negatively affects pore space geometry via deteriorating injectivity and storage capacity.…”

Section: Implications For Thermo–hydro–mechanical–chemical Processesmentioning

confidence: 99%

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Probabilistic Nucleation and Crystal Growth in Porous Medium: New Insights from Calcium Carbonate Precipitation on Primary and Secondary Substrates

et al. 2021

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Knowledge of crystal nucleation and growth is paramount in understanding the geometry evolution of porous medium during reactive transport processes in geo-environmental studies. To predict transport properties precisely, it is necessary to delineate both the amount and location of nucleation and precipitation events in the spatiotemporal domain. This study investigates the precipitation of calcium carbonate crystals on a heterogeneous sandstone substrate as a function of chemical supersaturation, temperature, and time. The main objective was to evaluate solid formation under different boundary conditions when the solid−liquid interface plays a key role. New observations were made on the effect of primary and secondary substrates and the role of preferential precipitation locations on the rock surfaces. The results indicate that supersaturation and temperature determine the amount, distribution pattern, and growth rate of crystals. Substrate characteristics governed the nucleation, growth location, and evolution probability across time and space. Moreover, substrate surface properties introduced preferential sites that were occupied and covered with solids first. Our results highlight the complex dynamics induced by substrate surface properties on the spatial and temporal solute distribution, transport, and deposition. We accentuate the great potentials of the probabilistic nucleation model to describe mineral formation in a porous medium during reactive transport.

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Section: Implications For Thermo−hydro−mechanical−chemical Processesmentioning

confidence: 99%

Section: Implications For Thermo–hydro–mechanical–chemical Processesmentioning

confidence: 99%

Probabilistic Nucleation and Crystal Growth in Porous Medium: New Insights from Calcium Carbonate Precipitation on Primary and Secondary Substrates

et al. 2021

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“…During their 9 day experiment with supplementary solution, no significant increase in pressure was observed, indicating that the flow path of CO 2 was not significantly blocked. 23 Based on the existing research, it is noteworthy that investigations into the behavior of the solution supply in salt precipitation have predominantly focused on core-scale experiments, wherein direct observation of the growth process of salt in porous media poses challenges. Furthermore, a consensus regarding the influence of the supplementary solution on salt precipitation behavior has not been reached.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Salt Precipitation Behavior during Carbon Geological Sequestration: Considering the Influence of Formation Boundary Solutions

Wang,

Chen,

Yuan

et al. 2023

Energy Fuels

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The issue of salt precipitation during CO 2 geological storage in saline aquifers has presented significant challenges to the injectivity of current CO 2 geological storage projects. Numerous research efforts have been dedicated to investigating this problem; however, many laboratory studies have overlooked the influence of boundary conditions on the solution supply. This paper addresses this gap by conducting a pore-scale experimental study incorporating solution supply in a specially designed micromodel. The results reveal that in the absence of a solution supply, salt precipitates in a dendritic structure and is spatially dispersed, which only marginally decreases the injectivity. In contrast, under conditions with solution supply, different salt precipitation behaviors are observed based on the injection rate of CO 2 . At low CO 2 injection rates, a salt cluster precipitates at the inlet, and the combination of significant porosity reduction and the formation of wet salt leads to a severe decrease in permeability. However, increasing the injection rate prevents salt accumulation at the inlet; instead, a U-shaped band of salt forms on both sides of the mainstream area and the outlet. These research findings shed light on the influence of solution supply boundary conditions on salt precipitation behavior and provide crucial guidance for effectively managing salt-related challenges in CO 2 geological storage projects.

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“…It acidifies the reservoirs with carbonic acid, leading to the accelerated dissolution of primary minerals, and precipitation of stable carbonate minerals 12 , 14 – 17 . Subsurface CO 2 storage may also cause rapid salt crystal accumulations in the near-wellbore region, prompting pore-space clogging, reduced injectivity, and pressure build-up 4 , 5 , 9 , 18 , 19 . Similarly, geothermal heat and mass exchange perturbation cause rapid dissolution–precipitation reactions, scale formation, and operational challenges 1 , 20 .…”

Section: Introductionmentioning

confidence: 99%

Probabilistic nucleation governs time, amount, and location of mineral precipitation and geometry evolution in the porous medium

Nooraiepour

Masoudi

Hellevang

2021

Sci Rep

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One important unresolved question in reactive transport is how pore-scale processes can be upscaled and how predictions can be made on the mutual effect of chemical processes and fluid flow in the porous medium. It is paramount to predict the location of mineral precipitation besides their amount for understanding the fate of transport properties. However, current models and simulation approaches fail to predict precisely where crystals will nucleate and grow in the spatiotemporal domain. We present a new mathematical model for probabilistic mineral nucleation and precipitation. A Lattice Boltzmann implementation of the two-dimensional mineral surface was developed to evaluate geometry evolution when probabilistic nucleation criterion is incorporated. To provide high-resolution surface information on mineral precipitation, growth, and distribution, we conducted a total of 27 calcium carbonate synthesis experiments in the laboratory. The results indicate that nucleation events as precursors determine the location and timing of crystal precipitation. It is shown that reaction rate has primary control over covering the substrate with nuclei and, subsequently, solid-phase accumulation. The work provides insight into the spatiotemporal evolution of porous media by suggesting probabilistic and deterministic domains for studying reactive transport processes. We indicate in which length- and time-scales it is essential to incorporate probabilistic nucleation for valid predictions.

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Salt clogging during supercritical CO2 injection into a downscaled borehole model

Cited by 28 publications

References 52 publications

Probabilistic Nucleation and Crystal Growth in Porous Medium: New Insights from Calcium Carbonate Precipitation on Primary and Secondary Substrates

Probabilistic Nucleation and Crystal Growth in Porous Medium: New Insights from Calcium Carbonate Precipitation on Primary and Secondary Substrates

Experimental Investigation on Salt Precipitation Behavior during Carbon Geological Sequestration: Considering the Influence of Formation Boundary Solutions

Probabilistic nucleation governs time, amount, and location of mineral precipitation and geometry evolution in the porous medium

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