Study of wettability of calcite surfaces using oil–brine–enzyme systems for enhanced oil recovery applications

Khusainova, Alsu; Nielsen, Sidsel Marie; Pedersen, Hanne Høst; Woodley, John M.; Shapiro, Alexander

doi:10.1016/j.petrol.2014.12.014

Cited by 25 publications

(25 citation statements)

References 20 publications

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“…Our results also showed that AhEst is a good emulsifier agent and able to partially reverse the wettability of an oil-wet carbonate substrate. The effect of wettability alteration observed for AhEst is similar to that described for other esterases in oil recovery in displacement tests in carbonate porous medium (Nasiri 2011) or in adhesion tests on calcite substrates (Khusainova et al 2015). It has been proposed that this effect was caused by the adsorption of the enzyme on the solid surface, replacing the oil and therefore interfering in the adhesion of these compounds to the surfaces, which could also be the case for AhEst.…”

Section: Discussionsupporting

confidence: 75%

“…More recently, their use has been considered in the oil industry, specifically in enhanced oil recovery (EOR) processes because they act at the oil-water-rock interfaces, which can increase the oil mobility in the reservoir and consequently the oil production. Enzymes of the lipase/esterase group, used in laboratory experiments, have shown promise in decreasing oil adhesion on rock surfaces (Nasiri et al 2009, Khusainova et al 2015.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of esterase activity from an Acetomicrobium hydrogeniformans enzyme with high structural stability in extreme conditions

et al. 2018

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The biotechnological and industrial uses of thermostable and organic solvent-tolerant enzymes are extensive and the investigation of such enzymes from microbiota present in oil reservoirs is a promising approach. Searching sequence databases for esterases from such microbiota, we have identified in silico a potentially secreted esterase from Acetomicrobium hydrogeniformans, named AhEst. The recombinant enzyme was produced in E. coli to be used in biochemical and biophysical characterization studies. AhEst presented hydrolytic activity on short-acyl-chain p-nitrophenyl ester substrates. AhEst activity was high and stable in temperatures up to 75 °C. Interestingly, high salt concentration induced a significant increase of catalytic activity. AhEst still retained ~ 50% of its activity in 30% concentration of several organic solvents. Synchrotron radiation circular dichroism and fluorescence spectroscopies confirmed that AhEst displays high structural stability in extreme conditions of temperature, salinity, and organic solvents. The enzyme is a good emulsifier agent and is able to partially reverse the wettability of an oil-wet carbonate substrate, making it of potential interest for use in enhanced oil recovery. All the traits observed in AhEst make it an interesting candidate for many industrial applications, such as those in which a significant hydrolytic activity at high temperatures is required.

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Section: Discussionsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Characterization of esterase activity from an Acetomicrobium hydrogeniformans enzyme with high structural stability in extreme conditions

et al. 2018

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“…A plethora of experimental and computational works is available on wetting behavior of reservoir fluids over mineral surfaces, such as quartz (Hou et al 2015;Saraji et al 2013;Wu et al 2013;Xuefen et al 2009), calcite (Benlia et al 2012Cebecia and Sönmezb 2004;Guiwu et al 2009;Khusainova et al 2015;Sakuma et al 2014; Electronic supplementary material The online version of this article (doi:10.1007/s13204-017-0563-1) contains supplementary material, which is available to authorized users.…”

Section: Introductionmentioning

confidence: 99%

A molecular dynamics investigation into the adsorption behavior inside {001} kaolinite and {1014} calcite nano-scale channels: the case with confined hydrocarbon liquid, acid gases, and water

Fazelabdolabadi¹,

Alizadeh-Mojarad

2017

Appl Nanosci

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A set of molecular dynamics simulations was conducted, as the first comparative study of the adsorption behavior of liquid hydrocarbon/acid gases/water molecules over f10 14g calcite surface and {001} octahedral kaolinite surface in nanoconfined slit. According to atomic z-density profiles, hydrocarbon molecules have higher tendency towards the f10 14g calcite surface than the {001} octahedral kaolinite surface. In addition, water molecules form stronger adsorption layer over calcite surface than kaolinite. In contrast, acid gas molecules have higher tendency towards kaolinite surface than calcite. This behavior was spotted within nanometer-sized slit pores. The results also point to reduction in self-diffusion coefficient of molecules with strong adsorption over mineral surfaces in nano-confined environment.

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“…Wettability defined as the preferential affinity of the solid matrix for either the aqueous phase or the oil phase "the tendency of one fluid (wetting fluid) to spread on or adhere to a solid surface in the presence of another immiscible fluid (nonwetting fluid)" [40]. Reservoir wettability is an important and elusive petrophysical parameter in all types of core analyses, which affect saturation and enhanced oil recovery processes [41].…”

Section: Wettability Of Porous Mediamentioning

confidence: 99%

Hydrophobic Polymers Flooding

El-hoshoudy¹,

Desouky²,

Betiha³

et al. 2017

Application and Characterization of Surfactants

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Crude oil and other petroleum products are crucial to the global economy today due to increasing energy demand approximately (~1.5%) per year and significant oil remaining after primary and secondary oil recovery (~45-55% of original oil in place, OOIP), which accelerates the development of enhanced oil recovery (EOR) technologies. Polymer flooding through hydrophobically associated polyacrylamides (HAPAM) is a widely implemented EOR-technique, so they attracted much attention on both academic and industrial scales. Hydrophobically associating polyacrylamide (HAPAM) prepared by free radical emulsion polymerization of acrylamide (AM) monomer, divinyl sulfone as hydrophobic crosslinked moiety and surfmers, to chemically anchor a surfmer and hydrophobic crosslinker moiety onto the back bone of acrylamide chain. After that, polymeric nanocomposite was prepared through copolymerization of prepared HAPAM with different molar ratios of silica nanoparticles through one shot synthesis. Rheological properties for the prepared composites were evaluated. Wettability evaluation carried through quantitative and qualitative techniques where the results indicate novel polymers ability to alter rock wettability from oil-wet to water-wet.

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Study of wettability of calcite surfaces using oil–brine–enzyme systems for enhanced oil recovery applications

Cited by 25 publications

References 20 publications

Characterization of esterase activity from an Acetomicrobium hydrogeniformans enzyme with high structural stability in extreme conditions

Characterization of esterase activity from an Acetomicrobium hydrogeniformans enzyme with high structural stability in extreme conditions

A molecular dynamics investigation into the adsorption behavior inside {001} kaolinite and {1014} calcite nano-scale channels: the case with confined hydrocarbon liquid, acid gases, and water

Hydrophobic Polymers Flooding

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