Electrokinetic behavior of artificial and natural calcites: A review of experimental measurements and surface complexation models

Bonto, María; Eftekhari, Ali Akbar; Nick, Hamidreza M.

doi:10.1016/j.cis.2022.102600

Cited by 19 publications

(15 citation statements)

References 182 publications

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“…4-5, without considering the hydrophilicity/hydrophobicity of the surface. Also, it was considered uniform and constant despite being space-dependent [49]. With these assumptions, they can be used for a comparative purpose when the same brine is used.…”

Section: Calculation Of Zeta Potential From Streaming Potential Measu...mentioning

confidence: 99%

“…Globally, zeta potentials obtained for EST2 are less negative for SWd40 and SW-SO4 and more positive for FMB than those obtained for EST1. This variation can be related to differences in rock texture or the presence of impurities [49,55,56], as the calculated zeta potential represents a macroscopic weighted average that accounts for the magnitude and distribution of microscopic zeta potentials arising at each mineral surfaces (Figure 7). It can also be related to the difference in the composition of the solutions after interaction with the intact sample, as some variations in pH, conductivity and viscosity were observed ( Table 4).…”

Section: Zeta Potentialmentioning

confidence: 99%

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Relevance of zeta potential as a tool for predicting the response of controlled salinity waterflooding in oil–water-carbonate systems

Rodrigues

Levant

Klimenko

2022

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Section: Calculation Of Zeta Potential From Streaming Potential Measu...mentioning

confidence: 99%

Section: Zeta Potentialmentioning

confidence: 99%

Relevance of zeta potential as a tool for predicting the response of controlled salinity waterflooding in oil–water-carbonate systems

Rodrigues

Levant

Klimenko

2022

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“…Many investigators have reported ζ-potential measurements of the rock–brine–oil system using a variety of techniques, including electrophoresis and streaming potential. − Others have also predicted the ζ-potential using models. − For instance, surface complexation model (SCM), a geochemical model that describes the molecular level interaction of ions with solid surfaces, has been used to explain the ionic interactions with rocks and oil at the molecular level. − However, understanding of the rock–brine–oil interfacial characteristics (i.e., ζ-potential) has suffered from a lack of relevant models and measurements . Most of the literature studies used the diffused double-layer SCM, which does not capture the complexities at the rock–brine and oil–brine interfaces.…”

Section: Introductionmentioning

confidence: 99%

“…Recent developments have seen the application of the basic Stern and triple-layer SCM to model the geochemical reactions. These models assume ionic interactions at different parallel planes separated by a defined capacitance; ,,,, hence, they have been successfully applied in explaining the electrokinetic interactions at the rock–brine and oil–brine interfaces. Nonetheless, most of the SCMs predicted the ζ-potential using low-salinity brine and/or single-salt brine. − ,,, However, naturally subsurface reservoirs contain high-salinity brine with multicomponent ionic composition.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Effects of Mineral Impurities, Brine Ionic Composition and CO₂ on Rock–Brine–Oil Electrokinetic Behavior Using a High-Salinity Surface Complexation Model

2023

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ζ-Potential is applied in many subsurface processes including in the petroleum industry, deep saline aquifers, and geothermal fields to understand oil recovery, hydrogen, and CO2 storage. Typical subsurface formations contain high-salinity brine with multicomponent ionic species and varying mineral impurities. However, predicted ζ-potential models make use of surface complexation models (SCMs) compatible with low-salinity brine and/or single-salt brine and single mineral composition. In this study, a basic Stern model (BSM) is proposed to compute the rock–brine–oil ζ-potential at high salinity conditions, varying brine ionic composition, complex mineralogy, and CO2. The effects of impurities, modeled through dissolution reactions, and their influence on the ζ-potential were included in the developed model. The developed BSM was observed to capture the literature-reported ζ-potential measurements with an ionic strength as high as 5.4 M, suggesting that our model can be applied to other subsurface conditions, such as geothermal fields and deep saline aquifers, where the reservoir usually contains high-salinity brine. The simulation results showed that increasing the SO4 2–-ion concentration can decrease the smart water oil recovery in carbonate formation but improve the oil recovery in the quartz reservoir. Meanwhile, high Mg2+-ion concentration can reduce the smart water oil recovery in both carbonate and quartz reservoirs. The study further showed that the presence of impurities in the carbonate rock can make the carbonate reservoir more water-wet and increase the smart water oil recovery. However, the presence of impurities in the sandstone reservoir can render the sandstone reservoir oil-wet and decrease the smart water oil recovery. Our study demonstrated that high pCO2 can make both the carbonate and sandstone reservoirs more water-wet and improve the smart water oil recovery. In general, the results produced from this study suggest that the SCM should incorporate the mineral impurities into geochemical reactions so that true reflection of the surface chemistry can be captured by the model.

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“…To address this challenge, many experiments were designed to separately study the interactions in the brine–rock − or oil–brine − systems. The knowledge coming from these experiments is extremely valuable and essential for the development of surface complexation models (SCMs) for both the calcite–brine (e.g., refs − ) and oil–brine interfaces . These SCMs, which describe and quantify the adsorption and charge development at both interfaces based on the brine and crude oil composition, are often used to assess the wetting conditions.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Carboxylates on Calcite: the Coupled Effect of Calcite–Brine and Brine–Oil Interactions

2022

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The adsorption of polar organic molecules on the surface of brine-saturated carbonate rocks alters the relative mobility of oil and water with important implications for oil production and groundwater remediation. We propose a mathematical model for the adsorption of polar organic acid groups (initially contained in an oil phase) on calcite in the presence of brine. We reduce the problem into smaller subsystems and characterize them by identifying the key interactions. Oil–brine equilibrium is dictated by the partitioning of acidic components between the two phases. The dissolved acids ionize to carboxylate species in the water phase, which may either form complexes with the calcite surface or precipitate as calcium carboxylate salts by binding calcium ions from the solution. All these interactions are implemented into a Phreeqc model as equilibrium and kinetic processes. To obtain the main parameters (e.g., partition, ionization, or adsorption constants) governing the behavior of the different subsystems at different chemical conditions, we tune the sub-models to relevant experimental data (e.g., partitioning, precipitation, adsorption, and electrokinetic measurements). We then assess the performance of the model by coupling the reaction network to the transport equations and simulating the crude oil injection within a chalk core to predict effluent acid concentration history. By defining the total acidity of crude oil as a mixture of several carboxylic acids, our model satisfactorily fits the experimental data. The total acid number that is commonly reported as the sole indicator for the concentration of organic acids in oil does not allow distinguishing between different types of organic acids nor their affinity toward the calcite surface. More sophisticated analytical methods for quantifying the acid species in the crude oil are required for a more accurate description of the adsorption process using our model.

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Electrokinetic behavior of artificial and natural calcites: A review of experimental measurements and surface complexation models

Cited by 19 publications

References 182 publications

Relevance of zeta potential as a tool for predicting the response of controlled salinity waterflooding in oil–water-carbonate systems

Relevance of zeta potential as a tool for predicting the response of controlled salinity waterflooding in oil–water-carbonate systems

Understanding the Effects of Mineral Impurities, Brine Ionic Composition and CO₂ on Rock–Brine–Oil Electrokinetic Behavior Using a High-Salinity Surface Complexation Model

Adsorption of Carboxylates on Calcite: the Coupled Effect of Calcite–Brine and Brine–Oil Interactions

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Electrokinetic behavior of artificial and natural calcites: A review of experimental measurements and surface complexation models

Cited by 19 publications

References 182 publications

Relevance of zeta potential as a tool for predicting the response of controlled salinity waterflooding in oil–water-carbonate systems

Relevance of zeta potential as a tool for predicting the response of controlled salinity waterflooding in oil–water-carbonate systems

Understanding the Effects of Mineral Impurities, Brine Ionic Composition and CO2 on Rock–Brine–Oil Electrokinetic Behavior Using a High-Salinity Surface Complexation Model

Adsorption of Carboxylates on Calcite: the Coupled Effect of Calcite–Brine and Brine–Oil Interactions

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Understanding the Effects of Mineral Impurities, Brine Ionic Composition and CO₂ on Rock–Brine–Oil Electrokinetic Behavior Using a High-Salinity Surface Complexation Model