Atomic Force Microscopy and Wettability Study of the Alteration of Mica and Sandstone by a Biosurfactant-Producing Bacterium &lt;I&gt;Bacillus thermodenitrificans&lt;/I&gt;

Zargari, Saeed; Ostvar, Sassan; Niazi‎, Ali; Ayatollahi, Shahab

doi:10.1166/jamr.2010.1036

Cited by 29 publications

(18 citation statements)

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“…Recently, wettability alteration has been proposed as one of the mechanisms of MEOR where several studies reported the relation between IFT reduction and alteration of wetting conditions following microbial treatment (Sayyouh et al 1995;Zekri et al 2003;Kowalewski et al 2006;Zargari et al 2010). Al-Sulaimani et al (2012) concluded that the ability of the biosurfactant used in this study to alter the wettability of rocks and surfaces is one of the mechanisms for enhancing oil recovery.…”

Section: Introductionmentioning

confidence: 82%

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: Introductionmentioning

confidence: 82%

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

et al. 2015

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“…Recently, wettability alteration has been proposed as one of the mechanisms of MEOR; several studies reported the relationship between IFT reduction and alteration of wetting conditions following microbial treatment (Sayyouh and Al-Blehed 1995;Mu et al 2002;Zekri et al 2003;Kowalewski et al 2006;Zargari et al 2010). In this study, wettability alteration by the biosurfactant produced by B. subtilis Strain W19 is investigated by contact-angle measurements, AFM analyses on graphene surfaces, and Amott tests.…”

Section: Introductionmentioning

confidence: 94%

“…In this study, wettability alteration by the biosurfactant produced by B. subtilis Strain W19 is investigated by contact-angle measurements, AFM analyses on graphene surfaces, and Amott tests. Zargari et al (2010) used AFM to investigate the surface change on mica plaques caused by three bacterial-treatment methods and found that all three conditioning solutions were capable of altering the wettability of mica.…”

Section: Introductionmentioning

confidence: 99%

Residual-Oil Recovery Through Injection of Biosurfactant, Chemical Surfactant, and Mixtures of Both Under Reservoir Temperatures: Induced-Wettability and Interfacial-Tension Effects

Al-Sulaimani

Al-Wahaibi

Al-Bahry

et al. 2012

SPE Reservoir Evaluation &Amp; Engineering

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In this study, a biosurfactant produced by a Bacillus subtilis strain isolated from oil-contaminated soil from an Omani oil field was tested for its potential in enhancing oil recovery by a series of coreflooding experiments. It was found that the performance of the biosurfactant was increased by mixing with chemical surfactants, by which the maximum production went up to 50% of residual oil at a mixing ratio of (50:50). The second objective of this study was to investigate the effects of the biosurfactant on wettability alteration and to estimate its tendency to loss caused by adsorption. The influence of biosurfactant on wettability was studied by contact-angle measurements, atomic force microscopy (AFM) technique on few-layer graphene (FLG) surfaces, and Amott wettability tests on Berea sandstone cores. Contact-angle measurements showed that the wettability of the biosurfactant solution changes to more oil-wet as the angle decreased from 70.6 to 25.32° when treated with 0.25% (w/v) biosurfactant solution. Amott testing showed a change in wettability index from strongly water-wet in the untreated core toward less water-wet in biosurfactant-treated cores. These results confirmed the ability of the biosurfactant to alter the wetting conditions against different surfaces, thereby serving as a mechanism for enhancing oil recovery. The maximum loss of biosurfactant caused by adsorption was 1.2 mg/g of rock, which is comparable with reported chemical-surfactant values.

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“…Treating rock surfaces with nanoparticles based fluids have been shown to improve surface wetness confirmed via contact angle examinations owing to efficient adsorption of nanoparticles on rock surfaces and surface roughness increase. Several wetting studies have been performed via this approach and confirms the effectiveness thereof on diverse rock surfaces [23,24,[46][47][48][91][92][93][94]. For example, the adsorption and surface roughness behavior of blends of nanoparticles (ZrO 2 and NiO) and surfactants (cetyltrimethylammonium bromide (C 16 TAB-cationic) and triton X-100 (non-ionic)) were mechanistically assessed by exposing rock substrates to different nanoparticle-surfactant fluids (NiO/C 16 TAB, NiO/TX-100, ZrO 2 /C 16 TAB, ZrO 2 /TX-100) [24].…”

Section: Sem and Afm Imagingmentioning

confidence: 79%

A Realistic Look at Nanostructured Material as an Innovative Approach for Enhanced Oil Recovery Process Upgrading

Nwidee¹,

Barifcani²,

Lebedev³

et al. 2018

Recent Insights in Petroleum Science and Engineering

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With the continuous rise in energy demand and decline in reserves, the Petroleum Industries are constantly in search of inventive and novel approaches to optimize hydrocarbon recovery despite several decades of deployment of conventional and enhanced strategies. This chapter presents an in-depth analysis of nanomaterial (nanoparticles), their unique characteristics and potentials in relation to smart field development, enhanced oil recovery (EOR) and CO 2 geosequestration. The particles surface functionalities, unique size dependent property, adsorption, and transport behavior were scrutinized. The materials precise role in enhancing reservoir parameters that influences rock-fluid interactions, and reservoir fluid distribution and displacement such as permeability, wettability, interfacial tension, and asphaltene aggregate growth inhibition were evaluated. The study argues that the application of nanoparticle based fluids as novel EOR approach offers more holistic measures, potentials, and opportunities than micro and macro particles and can stimulate the continuous evolution of EOR processes even under harsh reservoir conditions, thus, offering better benefits over conventional surface-active agents. We believe this study will significantly impact the understanding of EOR with respect to nanoparticles, which is crucial for augmenting reservoir processes and to accelerate the realization of nanoparticles for EOR and CO 2 sequestration processes at industrial scale.Keywords: EOR, nanoparticles, adsorption, Asphaltene, wettability, IFT, permeability, viscosity, CO 2 © 2018 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. OverviewIt is a fact that the period of cheap hydrocarbon recovery is waning as hydrocarbons are currently been explored in remote regions under harsh reservoir conditions. The accessible hydrocarbon resources are constantly declining with a corresponding increase in energy demand which invariably contributes to the price irregularities in the oil and gas industry. Globally, the growth in energy demand appears to be predominant amidst feasible unconventional energy options (renewable energy). Unarguably, newer energy sources, such as nuclear, wind, geo-thermal and solar are effective measures for addressing energy shortage. However, they are yet to be ample alternatives for substituting the role of oil in meeting the ever-rising energy demand. To date, these demands are currently being substantiated via hydrocarbon sources especially petroleum -oil is still the most valuable product with great global economic impact. Currently, diverse conventional strategies (waterflooding), and enhanced methods (use of chemicals, gases, and microbes) are been deployed in oil fields, regardless, these challenges persist. More efficient, yet cost-effective, environmenta...

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Atomic Force Microscopy and Wettability Study of the Alteration of Mica and Sandstone by a Biosurfactant-Producing Bacterium <I>Bacillus thermodenitrificans</I>

Cited by 29 publications

References 0 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

Residual-Oil Recovery Through Injection of Biosurfactant, Chemical Surfactant, and Mixtures of Both Under Reservoir Temperatures: Induced-Wettability and Interfacial-Tension Effects

A Realistic Look at Nanostructured Material as an Innovative Approach for Enhanced Oil Recovery Process Upgrading

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