Convection, Dispersion, and Adsorption of Surfactants in Porous Media

Ramirez, W. Fred; Shuler, Patrick; Friedman, Francois

doi:10.2118/7951-pa

Cited by 52 publications

(18 citation statements)

References 7 publications

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“…The other problem is diffusion or dispersion of surfactant in the reservoir. A chemical transport equation of characterizing dispersion and adsorption of a chemical solution injected into a core plug can be described by a mass balance and the Langmuir chemical model (Satter, 1980 andRamirez, 1980). Taking into consideration several assumptions, such as initial and boundary condition, the Langmuir chemical adsorption can be reduced to the Langmuir equilibrium adsorption isotherm:…”

Section: Dispersion and Dynamic Adsorption Of Surfactant In Carbonatementioning

confidence: 99%

Adsorption-Desorption of an Amphoteric Surfactant onto Permeable Carbonate Rocks

et al. 2012

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The loss of surfactant from aqueous solutions during the propagation in the reservoirs, especially carbonate reservoirs, is one of the major concerns with chemical oil recovery processes. This is due to the loss of effectiveness of the chemical solution to reduce the oil-water interfacial tension and thus renders the process economically unfeasible. This paper presents, in detail, 10 runs of core flooding tests on dynamic adsorption and desorption of an amphoteric surfactant (OCT-1) onto permeable carbonate rocks, which were conducted in natural carbonate core plugs at reservoir temperature of 100°C and pore pressure of 3100 psi. The surfactant solution was continuously injected into the core plug until the effluent surfactant concentration approached that of the injected surfactant solution, followed by seawater injection until no surfactant was present in the effluent. The effluent surfactant concentrations were analyzed by means of titration technique. Amount of dynimc adsorption and desorption of surfactant solutions was calculated using a new definite integral method. The results showed that the adsorption of the surfactant decreases with increase in the value of the pore geometry parameter, (K/Ф) 0.5 . The adsorption ranges from 0.223 mg/g-rock to 0.597 mg/g-rock for the rocks with permeabilities from 688 md to 110 md. For surfactant concentration of 0.2 wt% OCT-1 in seawater that was used in the study, this level of adsorption implies the surfactant is applicable from adsorption point of view. It was also observed that the adsorption varied with the initial surfactant concentration, as well as relationship between dynamic adsorption and despersion. The value of dispersion, mechanical mixing coefficients and matching adsorption were obtained using dispersion/adsorption equations to match experimental data. This paper presents insights into the adsorption and desorption of the amphoteric type of surfactant on carbonate rocks which could help the application design for a chemical flooding process.

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Section: Dispersion and Dynamic Adsorption Of Surfactant In Carbonatementioning

confidence: 99%

Adsorption-Desorption of an Amphoteric Surfactant onto Permeable Carbonate Rocks

et al. 2012

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“…These factors include the surfactant types (Hayes et al, 1979), chemistry (Enedy et al, 1982;Hirasaki et al, 1983;Krumrine et al, 1982), phase behavior (Glover et al, 1979;Novosad, 1982), chemicals adsorption (Austad et al, 1997), surfactant precipitation and redissolution (Somasundaran et al, 1984), chromatographic separation of chemicals (Li et al, 2009), surfactant convection (Ramirez et al, 1980), surfactant stability (Handy et al, 1982), chemicals loss (Friedmann, 1986), dispersion (Hirasaki, 1981), surfactant systems formulation (Salager et al, 1979), wettability , reservoir rock structure and morphology (Dullien et al, 1972;Yadali Jamaloei and Kharrat, 2009;Yadali Jamaloei et al, 2011a), and reservoir heterogeneity (Ma et al, 2007). The morphology and heterogeneity of the reservoir rock play a significant role in the behavior of chemical flooding processes.…”

Section: Factors That Influence the Chemical Floodingmentioning

confidence: 99%

Chemical Flooding in Naturally Fractured Reservoirs: Fundamental Aspects and Field-Scale Practices

Jamaloei

2011

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

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Résumé -Inondation chimique dans les réservoirs naturellement fracturés : aspects fondamentaux et pratiques de plein champ -Des méthodes appropriées devraient être utilisées pour augmenter la récupération d'huile des réservoirs naturellement fracturés (RNFs). Un des candidats pour augmenter cette récupération d'huile de ces réservoirs est l'injection d'eau contenant des agents chimiques. Cet article met en lumière les résultats techniques et les défis de cette technique. La classification, les caractéristiques de production, les mécanismes de rétablissement du RNFs et les résultats significatifs de l'injection d'eau contenant des agents chimiques dans ces réservoirs sont passés en revue et analysés. Ce papier vise à être un outil de référence utile aux ingénieurs intéressés par l'injection d'eau contenant des agents chimiques dans les RNFs. Abstract -Chemical Flooding in Naturally Fractured

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“…where mmic is the mass transfer rate of micelles from the bulk solution to the cell (L mg -1 s -1 ), which is a function of the reactor mixing and biomass concentration (7,15,16), and Pr is the probability of a micelle breaking down when adjacent to the cell surface (described below).…”

Section: Model Developmentmentioning

confidence: 99%

Relationship between Micellar and Hemi-Micellar Processes and the Bioavailability of Surfactant-Solubilized Hydrophobic Organic Compounds

Brown

2007

Environ. Sci. Technol.

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In a landmark study on surfactant-enhanced biodegradation of hydrophobic organic compounds (HOCs), Guha and Jaffé demonstrated that a fraction (f) of micellar-phase HOC is directly bioavailable to bacterial cells. They developed a theoretical description of fwhich provided an excellent model of the experimental results. However, a mass transfer term describing the transport of the HOC through the cell wall (m(c)) was found to vary over an order of magnitude for the different surfactants examined, and a theoretical description of it remained elusive. This elusivity also resulted in the model not being able to describe a priori why fwas zero for the non-ionic surfactant C12E23. Here, the results of a recent study on surfactant sorption are used to develop an alternative mechanism describing m(c), where hemi-micellar formation on the cell surface is incorporated into the pathway describing micellar HOC bioavailability. The revised model is validated against HOC bioavailability data for five different C12E(y) surfactants, and it is shown that a single value for the mass transfer coefficient describing transfer of the hemi-micellar HOC into the bacterial cell is able to replicate the complete C12E(y) dataset, including that of C12E23 which eluded the original model. Overall, the results indicate that surfactant sorption and hemi-micelle formation are important parameters governing surfactant-enhanced bioavailability.

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Convection, Dispersion, and Adsorption of Surfactants in Porous Media

Cited by 52 publications

References 7 publications

Adsorption-Desorption of an Amphoteric Surfactant onto Permeable Carbonate Rocks

Adsorption-Desorption of an Amphoteric Surfactant onto Permeable Carbonate Rocks

Chemical Flooding in Naturally Fractured Reservoirs: Fundamental Aspects and Field-Scale Practices

Relationship between Micellar and Hemi-Micellar Processes and the Bioavailability of Surfactant-Solubilized Hydrophobic Organic Compounds

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