Measurement and estimation of CO2–brine interfacial tension and rock wettability under CO2 sub- and super-critical conditions

Mutailipu, Meiheriayi; Liu, Yu; Jiang, Lanlan; Zhang, Yi

doi:10.1016/j.jcis.2018.09.031

Cited by 113 publications

(63 citation statements)

References 53 publications

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“…In contrast, in the supercritical zone, IFT reaches a platform. (2) IFT usually decreases with the increase of temperature, but it reacts to more temperature dependence when CO 2 is near the critical point [79]. (3) IFT increases linearly with salt concentration [74].…”

Section: Interfacial Tension and Miscibilitymentioning

confidence: 99%

CO2-Fluid-Rock Interactions and the Coupled Geomechanical Response during CCUS Processes in Unconventional Reservoirs

Cai

et al. 2021

Geofluids

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The difficulty of deploying remaining oil from unconventional reservoirs and the increasing CO2 emissions has prompted researchers to delve into carbon emissions through Carbon Capture, Utilization, and Storage (CCUS) technologies. Under the confinement of nanopore in unconventional formation, CO2 and hydrocarbon molecules show different density distribution from in the bulk phase, which leads to a unique phase state and interface behavior that affects fluid migration. At the same time, mineral reactions, asphaltene deposition, and CO2 pressurization will cause the change of porous media geometry, which will affect the multiphase flow. This review highlights the physical and chemical effects of CO2 injection into unconventional reservoirs containing a large number of micro-nanopores. The interactions between CO2 and in situ fluids and the resulting unique fluid phase behavior, gas-liquid equilibrium calculation, CO2 adsorption/desorption, interfacial tension, and minimum miscible pressure (MMP) are reviewed. The pore structure changes and stress distribution caused by the interactions between CO2, in situ fluids, and rock surface are discussed. The experimental and theoretical approaches of these fluid-fluid and fluid-solid reactions are summarized. Besides, deficiencies in the application and safety assessment of CCUS in unconventional reservoirs are described, which will help improve the design and operation of CCUS.

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Section: Interfacial Tension and Miscibilitymentioning

confidence: 99%

CO2-Fluid-Rock Interactions and the Coupled Geomechanical Response during CCUS Processes in Unconventional Reservoirs

Cai

et al. 2021

Geofluids

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“…and pore geometry (r) (Arif et al, 2016;Iglauer, 2017;Mutailipu et al, 2019). In porous media, the capillary pressure (P c ) can be calculated by the Young-Laplace equation:…”

Section: 1029/2020gl088490mentioning

confidence: 99%

“…In addition, the buoyant CO 2 migrates upward and can be sealed permanently by a low permeability caprock, where high capillary entry pressure stalls CO 2 upward migration. Capillary forces influence the efficiency of residual and structural trapping, through CO 2 ‐brine‐rock interactions, that is, CO 2 ‐brine interfacial tension ( γ wc ) and contact angle (CA) ( θ ), and pore geometry ( r ) (Arif et al, 2016; Iglauer, 2017; Mutailipu et al, 2019). In porous media, the capillary pressure ( P c ) can be calculated by the Young‐Laplace equation:

P_{c} = P_{{CO}_{2}} - P_{w} = \frac{2 γ_{w c} \cos θ}{r}

…”

Section: Introductionmentioning

confidence: 99%

“…Research has focused on convective‐dominant regimes by continuously injecting CO 2 ‐enriched brine, typically causing uniform dissolution as the porous media are surface reaction controlled. Insights into effects of these reactions on pore networks, brine chemistry (salinity and ion type), and reservoir pressure and temperature on CA (Al‐Yaseri et al, 2017; Arif et al, 2016; Botto et al, 2017; Chen et al, 2017; Iglauer, 2017; Jung & Wan, 2012; Mutailipu et al, 2019; S. Wang et al, 2012; Zhang et al, 2016) and rock porosity and permeability (Luquot & Gouze, 2009; Nogues et al, 2013; Soong et al, 2018) have been studied under convective‐dominant conditions extensively. However, few studies have focused on diffusion‐dominant transport and their impact on changes in wettability and the subsequent influence on capillary pressure and relative permeability curves.…”

Section: Introductionmentioning

confidence: 99%

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Link Between CO₂‐Induced Wettability and Pore Architecture Alteration

Wang

Alvarado

Smith

et al. 2020

Geophysical Research Letters

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Changes in pore (throat) size, surface roughness, and mineralogy induced by supercritical CO 2-water-rock reactions impact petrophysical properties such as porosity, permeability, and especially wettability. Herein, we show that these changes directly impact relative permeability and capillary pressure curves, a fact rarely studied in the literature. In this work, we show that CO 2 contact angle changes emerge after Madison Limestone samples were soaked for 400 hr in CO 2-enriched brine. Coreflooding results show that the water production rate and cumulative water production increased after the rock was exposed to carbonic acid. Moreover, the mercury capillary pressure decreased in mesopores and macropores, indicating the increase of size in these pores due to reactions. This compounded wettability and pore network alteration can directly affect CO 2 injectivity, migration, and storage capacity. This fundamental insight into CO 2 geological storage processes should aid practitioners to reduce uncertainties in forecasting CO 2 distribution via injection simulation. Plain Language Summary Emitting a large amount of greenhouse gases into the atmosphere has disrupted the global carbon cycle. CO 2 captured from various sources could be transported to a close-by site for injection into deep saline aquifers or oil/gas reservoirs for storage or/and enhanced oil recovery. Reactions between the rock and the carbonic acid can alter the rock fabric. These reactions can change rock properties, for example, pore structure, porosity, permeability, and wettability. These changes can affect capillary pressure and relative permeability. These rock alterations can significantly impact the fate of the injected CO 2. Despite efforts made to determine changes in pore architecture or petrophysical properties, a few studies have investigated the impact of rock alteration on multiphase flow properties, namely, capillary pressure and relative permeability. Even less is understood on this subject when diffusion dominates over convective transport. Here we focused on changes in pore (throat) size distribution and wettability, and dynamic properties, as induced by geochemical reactions. We observed pore enlargement among the larger pores (mesopores to macropores) due to mineral dissolution, which contrasts with a decreased size in smaller pores (micropores), resulting from mineral precipitation. These processes lead to a more CO 2 surface wetting and thereby capillary pressure and relative permeability.

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“…As the consumption of fossil fuels continues to increase rapidly, the resulting enormous and continuous emissions of CO 2 are leading to global warming 1–7 . As a promising carbon capture, utilization, and storage (CCUS) technique, CO 2 ‐enhanced oil recovery (CO 2 ‐EOR) is expected to play an important role in mitigating global warming 7–12 . To develop a comprehensive understanding of the CO 2 ‐EOR process, knowledge of the phase behavior and transport regularity of CO 2 ‐containing fluids is essential 13 .…”

Section: Introductionmentioning

confidence: 99%

The density characteristics of CO₂ and alkane mixtures using PC‐SAFT EoS

et al. 2020

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The density of CO 2 + crude oil mixtures is one of the most important parameters influencing CO 2 diffusion and migration in oil reservoirs. However, it would be quite time consuming to obtain comprehensive density data for CO 2 + alkane mixtures over a wide range of temperatures and pressures via experimental methods, therefore the development of a reliable model for predicting the densities of various CO 2 + alkane mixtures with high accuracy is crucial. In this paper, the parameters (m, σ , and ε/k) in the perturbed-chain statistical associating fluid theory (PC-SAFT) Equation of State (EoS) were optimized by correlating density data of pure n-alkanes from heptane to nonadecane (except undecane and hexadecane). For comparison, the G-S PC-SAFT and HTHP PC-SAFT EoS(s) were also employed to fit the densities of these n-alkanes, and the results demonstrated that the PC-SAFT EoS with the optimized parameters in this study exhibited superior accuracy. Subsequently, by correlating density data of CO 2 + alkane mixtures containing C7-C14 alkanes, the binary interaction parameter k ij was optimized. Furthermore, for the first time, correlations between the optimized parameters (m, σ , ε/k, and k ij) and alkane carbon number (n) were established. These correlations provided PC-SAFT EoS with a good universality and scalability for density prediction. Using the parameters calculated from these correlations, the densities of hexadecane and saturated CO 2 + alkane mixtures containing C10-C20 alkanes were successfully predicted with relatively high accuracy. This work provides a new way for modeling the thermodynamic properties of CO 2 + alkane mixtures.

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Measurement and estimation of CO2–brine interfacial tension and rock wettability under CO2 sub- and super-critical conditions

Cited by 113 publications

References 53 publications

CO2-Fluid-Rock Interactions and the Coupled Geomechanical Response during CCUS Processes in Unconventional Reservoirs

CO2-Fluid-Rock Interactions and the Coupled Geomechanical Response during CCUS Processes in Unconventional Reservoirs

Link Between CO₂‐Induced Wettability and Pore Architecture Alteration

The density characteristics of CO₂ and alkane mixtures using PC‐SAFT EoS

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Measurement and estimation of CO2–brine interfacial tension and rock wettability under CO2 sub- and super-critical conditions

Cited by 113 publications

References 53 publications

CO2-Fluid-Rock Interactions and the Coupled Geomechanical Response during CCUS Processes in Unconventional Reservoirs

CO2-Fluid-Rock Interactions and the Coupled Geomechanical Response during CCUS Processes in Unconventional Reservoirs

Link Between CO2‐Induced Wettability and Pore Architecture Alteration

The density characteristics of CO2 and alkane mixtures using PC‐SAFT EoS

Contact Info

Product

Resources

About

Link Between CO₂‐Induced Wettability and Pore Architecture Alteration

The density characteristics of CO₂ and alkane mixtures using PC‐SAFT EoS