Quantification of gas exsolution of alkane solvents-CO2 mixture in heavy oil with consideration of individual interfacial resistance under nonequilibrium conditions

Zhao, Zulong; Shi, Yu; Yang, Daoyong; Jia, Na

doi:10.1016/j.petrol.2019.05.058

Cited by 13 publications

(4 citation statements)

References 64 publications

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“…Hence, adding alkane solvent to the CO 2 gas improves the mass transfer process and, consequently, enhances oil swelling. , It should be noted that the crude oils in CO 2 mixture–oil systems are treated as one pseudo-component in most of the previous CO 2 diffusion studies. Zhao et al investigated the diffusion process of the CO 2 mixture in heavy oils. Their results showed that the D coefficients of C 3 H 8 and CO 2 in crude oils, measured at the same conditions, are larger than the CH 4 diffusion coefficient.…”

Section: Co2 Diffusion In Porous Mediamentioning

confidence: 99%

CO₂ Diffusion and Dispersion in Porous Media: Review of Advances in Experimental Measurements and Mathematical Models

et al. 2021

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CO 2 molecular diffusion in subsurface porous media is one of the key mechanisms in high-pressure−high-temperature CO 2 geosequestration and CO 2 -based enhanced oil recovery projects. The mass transfer rate of injected supercritical CO 2 and its dissolution in reservoir fluids are mainly described by the gas diffusion coefficient. Over the past decades, numerous efforts have been made to investigate the CO 2 molecular diffusion process in both hydrocarbon reservoirs and saline aquifers. However, various experimental methods and mathematical models with simplified assumptions were used to determine the CO 2 diffusivity, which sometimes led to inaccurate or contradicting results. Hence, it is essential to critically review and compare the CO 2 -diffusion-related literature for better application in geoscience, chemical, and petroleum engineering fields. In this review, we critically review the physics of CO 2 diffusion in porous and nanoporous media, including the diffusion theory, factors affecting the CO 2 diffusion coefficient in hydrocarbon reservoirs and saline aquifers, analysis of laboratory measurement methods, their advantages and disadvantages and limitations, and also evaluation of previously developed mathematical models and their uncertainties and empirical correlations, in detail. Additionally, we briefly discuss CO 2 dispersion in porous media from various aspects. Finally, potential research areas related to CO 2 diffusion in porous media are proposed.

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Section: Co2 Diffusion In Porous Mediamentioning

confidence: 99%

CO₂ Diffusion and Dispersion in Porous Media: Review of Advances in Experimental Measurements and Mathematical Models

et al. 2021

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“…The key principle of an effective VAPEX process is the diffusion/dispersion of the injected solvents (e.g., methane, CO2, and propane) into heavy oil reservoirs, which reduce oil viscosity and mobilize the diluted oil towards the production wells (Li and Yang, 2016;Li et al, 2017b;Jang et al, 2018;Bayestehparvin et al, 2019;Zhao et al, 2019;Jang and Yang, 2020;2021). In practice, the solvent injection rate should be high enough to exceed the flow rate by gravity drainage; otherwise, it will be difficult for the injected solvents to occupy the already-swept region, which is unfavorable for oil production (James and Chatzis, 2007).…”

Section: ) Vapor Extraction (Vapex)mentioning

confidence: 99%

Experimental and Numerical Evaluation of Enzyme-Assisted Hot Waterflooding Performance for Heavy Oil Reservoirs

Zhang

Hou

Ding

et al. 2022

Journal of Energy Resources Technology

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In this study, a systematical technique has been developed to experimentally and numerically evaluate enzyme-assisted hot waterflooding performance in a heavy oil reservoir for the first time. Experimentally, an enzyme solution (i.e., a protein-based liquid catalyst) is prepared and used to displace heavy oil in sandpacked experiments at elevated temperatures, during which pressures and fluid productions are continuously monitored and measured. Numerically, reservoir simulation is performed to reproduce the experimental measurements and then extended to evaluate the performance in a targeted heavy oil reservoir. Once history matching on the experimental measurements is completed, such a calibrated model is then employed to optimize enzyme concentration, temperature, and aging time, respectively. It is found from the displacement experiments that temperature imposes a significant impact on heavy oil recovery with its appropriate range of 45°C-55°C, and enzyme positively contributes to heavy oil recovery for most scenarios. Compared to the traditional waterflooding mechanisms, the enzyme-assisted hot waterflooding process shows its considerable potential in heavy oil recovery by means of reducing oil viscosity, altering wettability, and reducing interfacial tension.

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“…Considering its wide application as well as high computational efficiency and accuracy ,,− in the petroleum and chemistry industry, the PR EOS with the conventional van der Waals’ mixing rule is employed as the theoretical model in this work. The formulated PR EOS is listed as where P is the pressure in kPa, T is the temperature in K, V is the molar volume in m 3 /kmol, a and b are the constants at a given temperature, R is the universal gas constant, which is 8.314 J/(mol·K), α( T r ,ω) is the alpha function, which is determined by the reduced temperature T r and the acentric factor ω, T c is the critical temperature in K, and P c is the critical pressure in kPa.…”

Section: Mathematical Formulationsmentioning

confidence: 99%

Determination of Multiphase Boundaries for Pressure–Temperature (P–T) and Enthalpy–Temperature (H–T) Phase Diagrams of C₃H₈/CO₂/Water/Heavy Oil Systems at High Pressures and Elevated Temperatures

Huang

Yang

2019

Ind. Eng. Chem. Res.

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In this study, techniques have been developed to determine multiphase boundaries of C 3 H 8 /CO 2 /water/heavy oil systems in both the pressure−temperature (P−T) and enthalpy−temperature (H−T) phase diagrams. Experimentally, the upper three-phase boundary pressures (i.e., saturation pressures) between aqueous/liquid/vapor (ALV) and AL phases are measured for three C 3 H 8 /CO 2 /water/heavy oil mixtures. Moreover, the fluid samples in both L and V phases are collected to conduct compositional analysis by using a gas chromatography method. Theoretically, the previously developed waterassociated model, which considers only the presence of solvents with high solubility in water, together with the new alpha functions tailored for water and nonwater components is employed to predict the multiphase boundaries of the aforementioned systems. A newly developed enthalpy determination algorithm is applied to calculate the enthalpy of the Lloydminster heavy oil. The recently proposed water-associated model is capable of accurately predicting the upper three-phase boundary pressures of the three C 3 H 8 /CO 2 /water/heavy oil mixtures with a reasonable accuracy. As for the newly constructed H−T phase diagram, it is found that the three-phase ALV narrow-boiling region follows the trend of moving toward a higher temperature region with an increase of a specified pressure for a given feed. Finally, the water-associated model is proven to accurately reproduce the experimentally measured vapor and hydrocarbon-rich liquid phase compositions of the aforementioned systems.

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Quantification of gas exsolution of alkane solvents-CO2 mixture in heavy oil with consideration of individual interfacial resistance under nonequilibrium conditions

Cited by 13 publications

References 64 publications

CO₂ Diffusion and Dispersion in Porous Media: Review of Advances in Experimental Measurements and Mathematical Models

CO₂ Diffusion and Dispersion in Porous Media: Review of Advances in Experimental Measurements and Mathematical Models

Experimental and Numerical Evaluation of Enzyme-Assisted Hot Waterflooding Performance for Heavy Oil Reservoirs

Determination of Multiphase Boundaries for Pressure–Temperature (P–T) and Enthalpy–Temperature (H–T) Phase Diagrams of C₃H₈/CO₂/Water/Heavy Oil Systems at High Pressures and Elevated Temperatures

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Quantification of gas exsolution of alkane solvents-CO2 mixture in heavy oil with consideration of individual interfacial resistance under nonequilibrium conditions

Cited by 13 publications

References 64 publications

CO2 Diffusion and Dispersion in Porous Media: Review of Advances in Experimental Measurements and Mathematical Models

CO2 Diffusion and Dispersion in Porous Media: Review of Advances in Experimental Measurements and Mathematical Models

Experimental and Numerical Evaluation of Enzyme-Assisted Hot Waterflooding Performance for Heavy Oil Reservoirs

Determination of Multiphase Boundaries for Pressure–Temperature (P–T) and Enthalpy–Temperature (H–T) Phase Diagrams of C3H8/CO2/Water/Heavy Oil Systems at High Pressures and Elevated Temperatures

Contact Info

Product

Resources

About

CO₂ Diffusion and Dispersion in Porous Media: Review of Advances in Experimental Measurements and Mathematical Models

CO₂ Diffusion and Dispersion in Porous Media: Review of Advances in Experimental Measurements and Mathematical Models

Determination of Multiphase Boundaries for Pressure–Temperature (P–T) and Enthalpy–Temperature (H–T) Phase Diagrams of C₃H₈/CO₂/Water/Heavy Oil Systems at High Pressures and Elevated Temperatures