Modeling of interfacial tension in binary mixtures of CH4, CO2, and N2 - alkanes using gene expression programming and equation of state

Mirzaie, Mohsen; Tatar, Afshin

doi:10.1016/j.molliq.2020.114454

Cited by 29 publications

(12 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effect of gas types on foaming ability can be attributed to the interactions among the gas, water, and surfactant molecules and physio‐chemical properties of the solution. The interfacial tension of CO 2 –H 2 O is lower than that of CH 4 –H 2 O and that of N 2 –H 2 O, which is beneficial to increase foam volume (Chen & Yang, 2019; Kamari et al, 2017; Mirzaie & Tatar, 2020; C. Zhang, Wu, et al, 2020). CO 2 dissolving in water can make the solution acidic, which can affect the foaming ability and the function of the surfactants (P. Wang et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Stabilization of natural gas foams using different surfactants at high pressure and high temperature conditions

Bi¹,

Zhang

et al. 2021

J Surfact & Detergents

View full text Add to dashboard Cite

Natural gas foam can be used for mobility control and channel blocking during natural gas injection for enhanced oil recovery, in which stable foams need to be used at high reservoir temperature, high pressure and high water salinity conditions in field applications. In this study, the performance of methane (CH 4 ) foams stabilized by different types of surfactants was tested using a high pressure and high temperature foam meter for surfactant screening and selection, including anionic surfactant (sodium dodecyl sulfate), non-anionic surfactant (alkyl polyglycoside), zwitterionic surfactant (dodecyl dimethyl betaine) and cationic surfactant (dodecyl trimethyl ammonium chloride), and the results show that CH 4 -SDS foam has much better performance than that of the other three surfactants. The influences of gas types (CH 4 , N 2 , and CO 2 ), surfactant concentration, temperature (up to 110 C), pressure (up to 12.0 MPa), and the presence of polymers as foam stabilizer on foam performance was also evaluated using SDS surfactant. The experimental results show that the stability of CH 4 foam is better than that of CO 2 foam, while N 2 foam is the most stable, and CO 2 foam has the largest foam volume, which can be attributed to the strong interactions between CO 2 molecules with H 2 O. The foaming ability and foam stability increase with the increase of the SDS concentration up to 1.0 wt% (0.035 mol/L), but a further increase of the surfactant concentration has a negative effect. The high temperature can greatly reduce the stability of CH 4 -SDS foam, while the foaming ability and foam stability can be significantly enhanced at high pressure. The addition of a small amount of polyacrylamide as a foam stabilizer can significantly increase the viscosity of the bulk solution and improve the foam stability, and the higher the molecular weight of the polymer, the higher viscosity of the foam liquid film, the better foam performance.

show abstract

Section: Resultsmentioning

confidence: 99%

Stabilization of natural gas foams using different surfactants at high pressure and high temperature conditions

Bi¹,

Zhang

et al. 2021

J Surfact & Detergents

View full text Add to dashboard Cite

show abstract

“…This estimation can be made from data or correlations of the interfacial tension of alkanes contained in the crude oil and the injected gases. 1 , 12 , 19 , 20 …”

Section: Introductionmentioning

confidence: 99%

“…In a few words, as the injection process can be affected by the miscibility process, it is needed to estimate the so-called minimum miscibility pressure. This estimation can be made from data or correlations of the interfacial tension of alkanes contained in the crude oil and the injected gases. ,,, …”

Section: Introductionmentioning

confidence: 99%

Pressure–Surface Tension–Temperature Equation of State for n-Alkanes

Mulero

Cachadiña

Cardona

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Herein, the geometric similitude concept is applied to propose a cubic equation that relates surface tension, saturation pressure, and temperature for n -alkanes. The input properties for each fluid are the molecular mass, pressure, temperature, and compressibility factor at the critical point. The model is applied to temperatures below 0.93· T c (critical point temperature). A total of 2429 surface tension values have been selected for 32 n -alkanes. The parameters of the model have been obtained with a fit of the surface tension values for 19 pure n -alkanes that are randomly chosen. Then, it is tested for the other 13 pure n -alkanes and used to predict the surface tension for 11 binary and 4 ternary mixtures. These predictions are compared with the reported experimental data. For pure n -alkanes, the overall absolute average deviation is 2.4%, including the correlation and testing sets. No additional adjustable coefficients are used for mixtures, yielding an overall absolute average deviation of 2.98% for the binary systems and 7.97% for the ternary ones. The results show that the model is accurate enough for predictions and that the highest deviations are due to the lack of agreement in the values of surface tension of pure fluids obtained from different sources.

show abstract

“…The experiments seeking to determine the IFT are often limited to a narrow range of experimental conditions, frequently reporting the IFT only at a single temperature. , The main reason is that the IFT measurements are often very time- and resource-consuming, especially under extreme temperatures or pressures mimicking reservoir conditions or significantly below room temperature . For these reasons, several empirical methods − have been developed to predict IFT over wide ranges of pressures and temperatures, while experimental data are usually available for only a few equilibrium conditions.…”

Section: Introductionmentioning

confidence: 99%

“…25,26 The main reason is that the IFT measurements are often very time-and resource-consuming, especially under extreme temperatures or pressures mimicking reservoir conditions or significantly below room temperature. 29 For these reasons, several empirical methods 30−36 have been developed to predict IFT over wide ranges of pressures and temperatures, while experimental data are usually available for only a few equilibrium conditions. The parachor is the most common among these methods since it is simple, applicable to all conditions, and modifiable.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Predictions and Experimental Validation of Liquid–Vapor Interfacial Tension in Binary and Ternary Mixtures of Alkanes Using Molecular Dynamics Simulations

2022

View full text Add to dashboard Cite

Liquid−vapor interfacial properties of alkane mixtures present a challenge for experimental determination, especially under conditions relevant to the energy industry processes. Molecular dynamics (MD) simulations can accurately predict interfacial tensions (IFTs) for complex alkane mixtures under virtually any conditions, thereby alleviating the need for difficult and costly experiments. MD simulations with the CHARMM force field and empirical corrections for the IFT and pressure were used to obtain the IFT for three binary mixtures of ethane (with n-pentane, n-hexane, and n-nonane) and a ternary system (ethane/n-butane/n-decane) under a variety of conditions. The results were thoroughly validated against experimental data from the literature, and new original IFT data were collected using the pendant drop method. The simulations are able to reproduce the experimental IFT to better than 0.5 mN/m or 5% on average and within 1 mN/m or 10% in the worst case. IFTs for the studied three binary and ternary alkane mixtures were predicted for wide ranges of conditions with no known experimental data. Finally, using the MD simulation data, the reliability of the widely used empirical parachor model for predicting IFT was reaffirmed, and the significance of the empirical parameters examined to establish an optimal balance between the accuracy and broad applicability of the model.

show abstract

Modeling of interfacial tension in binary mixtures of CH4, CO2, and N2 - alkanes using gene expression programming and equation of state

Cited by 29 publications

References 74 publications

Stabilization of natural gas foams using different surfactants at high pressure and high temperature conditions

Stabilization of natural gas foams using different surfactants at high pressure and high temperature conditions

Pressure–Surface Tension–Temperature Equation of State for n-Alkanes

Quantitative Predictions and Experimental Validation of Liquid–Vapor Interfacial Tension in Binary and Ternary Mixtures of Alkanes Using Molecular Dynamics Simulations

Contact Info

Product

Resources

About