Surfactant-Based EOR Mediated by Naturally Occurring Microorganisms

Thomas, C.P.; Duvall, M.L.; Robertson, Eric P.; Barrett, Karen B.; Bala, G.A.

doi:10.2118/22844-pa

Cited by 32 publications

(16 citation statements)

References 15 publications

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“…Enhancement of oil recovery from Berea sandstone cores treated with cell-free metabolites from a surfactantproducing strain, Bacillus sp. JF-2, was reported by Thomas et al (1993). Joshi et al (2015) reported additional 37.1 % of heavy oil from Berea sandstone cores at 80°C was achieved using a lipopeptide-type of biosurfactant.…”

Section: Coreflood Experiments Using Chemical Surfactant and Biosurfamentioning

confidence: 94%

Injection of biosurfactant and chemical surfactant following hot water injection to enhance heavy oil recovery

et al. 2015

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This study investigates the potential of enhancing oil recovery from a Middle East heavy oil field via hot water injection followed by injection of a chemical surfactant and/or a biosurfactant produced by a Bacillus subtilis strain which was isolated from oil-contaminated soil. The results reveal that the biosurfactant and the chemical surfactant reduced the residual oil saturation after a hot water flood. Moreover, it was found that the performance of the biosurfactant increased by mixing it with the chemical surfactant. It is expected that the structure of the biosurfactant used in this study was changed when mixed with the chemical surfactant as a probable synergetic effect of biosurfactant-chemical surfactants was observed on enhancing oil recovery, when used as a mixture, rather than alone. This work proved that it is more feasible to inject the biosurfactant as a blend with the chemical surfactant, at the tertiary recovery stage. This might be attributed to the fact that in the secondary mode, improvement of the macroscopic sweep efficiency is important, whereas in the tertiary recovery mode, the microscopic sweep efficiency matters mainly and it is improved by the biosurfactantchemical surfactant mixture. Also as evidenced by this study, the biosurfactant worked better than the chemical surfactant in reducing the residual heavy oil saturation after a hot water flood.

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Section: Coreflood Experiments Using Chemical Surfactant and Biosurfamentioning

confidence: 94%

Injection of biosurfactant and chemical surfactant following hot water injection to enhance heavy oil recovery

et al. 2015

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show abstract

“…The critical micelle concentration is 20 mg/l, indicating that the biosurfactant is effective even at very low concentrations (12). Residual oil is recovered when a biosurfactant-producing bacterium and the nutrients needed to support growth are introduced into sandstone cores (14,24,27), but residual hydrocarbon recoveries were often low (5 to 20%) and required multiple pore volumes of recovery fluid (14,24).…”

Section: Introductionmentioning

confidence: 99%

Development of Biosurfactant-Mediated Oil Recovery in Model Porous Systems and Computer Simulations of Biosurfactant-Mediated Oil Recovery

McInerney¹,

Maudgalya²,

Knapp³

et al. 2004

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Executive summaryCurrent technology recovers only one-third to one-half of the oil that is originally present in an oil reservoir. Entrapment of petroleum hydrocarbons by capillary forces is a major factor that limits oil recovery (1,3,4). Hydrocarbon displacement can occur if interfacial tension (IFT) between the hydrocarbon and aqueous phases is reduced by several orders of magnitude. Microbially-produced biosurfactants may be an economical method to recover residual hydrocarbons since they are effective at low concentrations.Previously, we showed that substantial mobilization of residual hydrocarbon from a model porous system occurs at biosurfactant concentrations made naturally by B. mojavensis strain JF-1 if a polymer and 2,3-butanediol were present (2). In this report, we include data on oil recovery from Berea sandstone experiments along with our previous data from sand pack columns in order to relate biosurfactant concentration to the fraction of oil recovered. We also investigate the effect that the JF-2 biosurfactant has on interfacial tension (IFT). The presence of a co-surfactant, 2,3-butanediol, was shown to 2.

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“…However, the number of pore volumes required (40 to 70) was large. Residual oil is recovered when a biosurfactant-producing bacterium and the nutrients needed to support growth are introduced into sandstone cores [38,77,78], but residual hydrocarbon recoveries were often low (5 to 20%) and required multiple pore volumes of recovery fluid.…”

Section: Biosurfactantsmentioning

confidence: 99%

“…The most successful MEOR process by Brown With such a promising outlook for biosurfactant flooding, one must ask the question why the technology has not been implemented more extensively. The results of several laboratory studies show that residual oil recoveries by biosurfactant-producing microorganisms are low and inconsistent [34][35][36][37][38][39]. There are several potential reasons for this including the inconsistent production of the biosurfactant, loss of biosurfactant activity with extended incubation, and nutrient limitations that delay the growth of the requisite microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Development of an In Situ Biosurfactant Production Technology for Enhanced Oil Recovery

McInerney¹,

Knapp²,

Duncan³

et al. 2007

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Surfactant-Based EOR Mediated by Naturally Occurring Microorganisms

Cited by 32 publications

References 15 publications

Injection of biosurfactant and chemical surfactant following hot water injection to enhance heavy oil recovery

Injection of biosurfactant and chemical surfactant following hot water injection to enhance heavy oil recovery

Development of Biosurfactant-Mediated Oil Recovery in Model Porous Systems and Computer Simulations of Biosurfactant-Mediated Oil Recovery

Development of an In Situ Biosurfactant Production Technology for Enhanced Oil Recovery

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