Characterization of Crude Oil Equivalent Alkane Carbon Number (EACN) for Surfactant Flooding Design

Wan, Wei; Zhao, Jian; Harwell, Jeffrey H.; Shiau, Bor-Jier

doi:10.1080/01932691.2014.950739

Cited by 36 publications

(24 citation statements)

References 31 publications

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“…The data displayed in Table indicate some numerical variation of this parameter as a function of the surfactant characteristics. Other data are available in the literature sometimes with discrepancies, which clearly indicate errors of measurements, particularly of the k value, which influences the characteristic parameter estimation in spite of fair accuracy with the HLD relation (Wan et al, ).…”

Section: Physicochemical Properties Of Extended Surfactantsmentioning

confidence: 99%

Extended Surfactants Including an Alkoxylated Central Part Intermediate Producing a Gradual Polarity Transition—A Review of the Properties Used in Applications Such as Enhanced Oil Recovery and Polar Oil Solubilization in Microemulsions

Salager

Forgiarini

Márquez

2019

J Surfact & Detergents

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The research published in the past half century indicates that surfactant interfacial performance in producing low tension or high solubilization with polar oils is not generally attained with pure conventional species exhibiting well‐defined polar and nonpolar parts. The improvement trends reached with surfactant mixtures as well as the introduction of additives like cosurfactants and linkers lead to the introduction of the so‐called extended surfactants, whose structure includes an intermediate polarity spacer between the hydrophilic head and the lipophilic tail. Recent investigations on different kinds of surfactants in a variety of applications—such as detergency, cosmetics, enhanced oil recovery or crude demulsifying, and vegetable oil extraction—indicate that these extended surfactants are likely to be particularly performing with oils containing polar groups, such as triacylglycerols and asphaltenic crudes. Possible applications of extended surfactants in enhanced oil recovery, crude emulsion breaking, detergency and cleaning, medicine and cosmetics vehicles, and natural oil extraction as well as some other cases are quickly reviewed.

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Section: Physicochemical Properties Of Extended Surfactantsmentioning

confidence: 99%

Extended Surfactants Including an Alkoxylated Central Part Intermediate Producing a Gradual Polarity Transition—A Review of the Properties Used in Applications Such as Enhanced Oil Recovery and Polar Oil Solubilization in Microemulsions

Salager

Forgiarini

Márquez

2019

J Surfact & Detergents

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“…Decane is adopted as the oil phase according to the ''equivalent alkane carbon number'' value of crude oil. 38 Na + and Cl À ions, which are the basic components of brine and reservoir fluids, are uniformly dissolved in the water phase. The potential parameters of sodium and chloride ions in the simulations are proven to be effective and the simulation results based on these parameters are consistent with the experimental or theoretical results.…”

Section: Systemmentioning

confidence: 99%

Ionic hydration-induced evolution of decane–water interfacial tension

Wen

Sun

Bai

et al. 2017

Phys. Chem. Chem. Phys.

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bcBuilding a connection between the variations in interfacial tension and the microstructure of the oil-water interface is still very challenging. Here, we employ a molecular dynamics method to study the effect of monovalent ions on the decane-water interfacial tension and reveal the relationship between ionic hydration and the variation of interfacial tension. Our results indicate that interfacial tension presents a non-monotonic dependence on the ionic concentrations owing to the distinctive adsorption characteristics of ions. At low ionic concentrations, the hydration of the discrete ions at the interface causes an enhancement in the virial term of the interfacial tension, resulting in an increase of the interfacial tension with increasing ionic concentrations. At high ionic concentrations, the ion pairs at the interface weaken the ionic hydration, thus the virial term of the interfacial tension decreases and the interfacial tension decreases slightly. In addition, the kinetic energy term of interfacial tension increases only with increasing temperature, while the virial term decreases with an increase in either temperature or pressure on account of the weakening ionic hydration; therefore, the increase of temperature and pressure induces different degrees of the decrease in the interfacial tension owing to the major contribution of the virial term, particularly at high ionic concentrations.

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“…Wan et al proposed a review and comparisons of applicable approaches to experimentally determine the EACN of a dead crude oil [20]. As detailed in previous works [7,8], all EACNdo values reported hereafter were obtained following the method referred to as the direct method by Wan et al This method is mainly based on the use of equation (1) and consists in performing several phase diagrams for a {brine/surfactant/crude oil} system varying the salt concentration, i.e.…”

Section: Experimental Data and Database Creationmentioning

confidence: 99%

Equivalent alkane carbon number of crude oils: A predictive model based on machine learning

Creton

Lévêque

Oukhemanou

2019

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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In this work, we present the development of models for the prediction of the Equivalent Alkane Carbon Number of a dead oil (EACNdo) usable in the context of Enhanced Oil Recovery (EOR) processes. Models were constructed by means of data mining tools. To that end, we collected 29 crude oil samples originating from around the world. Each of these crude oils have been experimentally analysed, and we measured property such as EACNdo, American Petroleum Institute (API) gravity and $ {\mathrm{C}}_{{20}^{-}}$ , saturate, aromatic, resin, and asphaltene fractions. All this information was put in form of a database. Evolutionary Algorithms (EA) have been applied to the database to derive models able to predict Equivalent Alkane Carbon Number (EACN) of a crude oil. Developed correlations returned EACNdo values in agreement with reference experimental data. Models have been used to feed a thermodynamics based models able to estimate the EACN of a live oil. The application of such strategy to study cases have demonstrated that combining these two models appears as a relevant tool for fast and accurate estimates of live crude oil EACNs.

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Characterization of Crude Oil Equivalent Alkane Carbon Number (EACN) for Surfactant Flooding Design

Cited by 36 publications

References 31 publications

Extended Surfactants Including an Alkoxylated Central Part Intermediate Producing a Gradual Polarity Transition—A Review of the Properties Used in Applications Such as Enhanced Oil Recovery and Polar Oil Solubilization in Microemulsions

Extended Surfactants Including an Alkoxylated Central Part Intermediate Producing a Gradual Polarity Transition—A Review of the Properties Used in Applications Such as Enhanced Oil Recovery and Polar Oil Solubilization in Microemulsions

Ionic hydration-induced evolution of decane–water interfacial tension

Equivalent alkane carbon number of crude oils: A predictive model based on machine learning

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