Reservoir engineering of in-situ MEOR; impact of microbial community

Alkan, Hakan; Mukherjee, Soujatya; Kögler, Felix

doi:10.1016/j.petrol.2020.107928

Cited by 22 publications

(7 citation statements)

References 38 publications

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“…MEOR applications using bacterial activities and products like biosurfactants reduce IFT and modify wettability 13 – 18 . However, Alkan et al 19 argued that the IFT reduction from the MEOR is often insignificant. As biotechnology engineering continues to advance, more efficient methods are being employed to enhance the effectiveness of microorganisms and their byproducts, making MEOR more economically viable and widespread 20 – 26 .…”

Section: Introductionmentioning

confidence: 99%

Investigating the mechanism of interfacial tension reduction through the combination of low-salinity water and bacteria

Abdi,

Ranjbar,

Kazemzadeh

et al. 2024

Sci Rep

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In the enhanced oil recovery (EOR) process, interfacial tension (IFT) has become a crucial factor because of its impact on the recovery of residual oil. The use of surfactants and biosurfactants can reduce IFT and enhance oil recovery by decreasing it. Asphaltene in crude oil has the structural ability to act as a surface-active material. In microbial-enhanced oil recovery (MEOR), biosurfactant production, even in small amounts, is a significant mechanism that reduces IFT. This study aimed to investigate fluid/fluid interaction by combining low biosurfactant values and low-salinity water using NaCl, MgCl2, and CaCl2 salts at concentrations of 0, 1000, and 5000 ppm, along with Geobacillus stearothermophilus. By evaluating the IFT, this study investigated different percentages of 0, 1, and 5 wt.% of varying asphaltene with aqueous bulk containing low-salinity water and its combination with bacteria. The results indicated G. Stearothermophilus led to the formation of biosurfactants, resulting in a reduction in IFT for both acidic and basic asphaltene. Moreover, the interaction between asphaltene and G. Stearothermophilus with higher asphaltene percentages showed a decrease in IFT under both acidic and basic conditions. Additionally, the study found that the interaction between acidic asphaltene and G. stearothermophilus, in the presence of CaCl2, NaCl, and MgCl2 salts, resulted in a higher formation of biosurfactants and intrinsic surfactants at the interface of the two phases, in contrast to the interaction involving basic asphaltene. These findings emphasize the dependence of the interactions between asphaltene and G. Stearothermophilus, salt, and bacteria on the specific type and concentration of asphaltene.

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Section: Introductionmentioning

confidence: 99%

Investigating the mechanism of interfacial tension reduction through the combination of low-salinity water and bacteria

Abdi,

Ranjbar,

Kazemzadeh

et al. 2024

Sci Rep

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“…The MEOR mechanisms are created as a result of a reaction of bacteria with nutrients (Alkan et al). 4 To describe the growth and migration of bacteria, nutrients, and metabolites (biosurfactant and organic acid) within the reservoir, a five-point model (field scale) was developed, as shown in Figure 7 . A summary of all parameters used to simulate the process can be found in Table 7 (basic model data).…”

Section: Resultsmentioning

confidence: 99%

“…Microbial enhanced oil recovery (MEOR) is one of the traditional tertiary oil recovery methods that are easy to be applied in oil fields and has a comparably low environmental impact (Kobayashi et al; Song et al; Alkan et al. ). − Furthermore, MEOR has a further economic benefit because it requires only little investments in surface facilities and allows the use of cheap industrial byproducts such as molasses, which are independent of the price of crude (Sen; Kaster et al; Simpson et al). − However, MEOR processes can be quite complex and involve multiple biochemical process steps. Bacteria in the reservoir can produce biomass, biosurfactants, biopolymers, organic acids, and biogases (Sen) .…”

Section: Introductionmentioning

confidence: 99%

Kinetic Model and Numerical Simulation of Microbial Growth, Migration, and Oil Displacement in Reservoir Porous Media

Yao

Meng

et al. 2022

ACS Omega

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Microbial enhanced oil recovery (MEOR) is a potential tertiary oil recovery method. However, past research has failed to describe microbial growth and metabolism reasonably, especially quantification of reaction equations and operating parameters is still not clear. The present study investigated the ability of bacteria extracted from Ansai Oilfield for MEOR. Through core flooding experiments, bacteria-treated experiments produced approximately 6.28–9.81% higher oil recovery than control experiments. Then, the microbial reaction kinetic model was established based on laboratory experimental data and mass conservation. Furthermore, the proposed model was validated by matching core flooding experiment results. Lastly, the effects of different injection parameters on bacteria growth, bacteria migration, metabolite migration, residual oil distribution, and oil recovery were studied by establishing a field-scale model. The results indicate that the injected bacteria concentration and nutrient concentration have a great influence on bacteria growth in a reservoir and the low nutrient concentration seriously restricts bacteria growth. Compared with the injected bacteria concentration, nutrient concentration has a decisive effect on bacteria and metabolite migration. The injected bacteria concentration has little effect on oil recovery, while nutrient concentration and slug volume have a significant effect on oil recovery.

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“…In order to recover secondary oil from sediments, microbial enhanced oil recovery (MEOR) includes substituting biologically derived secondary metabolites for synthetic surfactants. These biologically derived secondary metabolites include acids, biopolymers, enzymes, gases, solvents, and the most promising biosurfactants [35,36,37,38]. In order to promote microbial development during MEOR, nutrients and microorganisms that create biosurfactants are added to the oil reservoir [39,40].…”

Section: Biosurfactants Applications a Oil Industriesmentioning

confidence: 99%

Microbial Production Bioemulsifier and its Applications

Shaileshbhai,

Pandya

2023

IJRASET

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According to various research, Biosurfactants are generally composed of amphipathic motes that have both hydrophilic and hydrophobic ingredients. The hydrophilic composites generally correspond to positive, negative, or amphoteric charged ions, whereas the hydrophobic composites are made up of a long chain of fatty acids. It is getting important in biotechnology products for numerous industrial applications including in food, cosmetics and cleaning products, medicine, drug, and oil and gas. Bacterial cells produce an admixture of biosurfactant( BS) lipids with the help of which oil is dispersed into veritably fine droplets and therefore the bioavailability of CO is increased. Biosurfactants are surface-active site compounds produced by microorganisms. Biosurfactant generally refers to surfactants of microbial origin. Most of the biosurfactants produced by microbes are synthesized extracellularly and numerous microbes are known to produce biosurfactants in large relative amounts. This study concentrates on the insulation of biosurfactant-producing microorganisms from soil samples.

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Reservoir engineering of in-situ MEOR; impact of microbial community

Cited by 22 publications

References 38 publications

Investigating the mechanism of interfacial tension reduction through the combination of low-salinity water and bacteria

Investigating the mechanism of interfacial tension reduction through the combination of low-salinity water and bacteria

Kinetic Model and Numerical Simulation of Microbial Growth, Migration, and Oil Displacement in Reservoir Porous Media

Microbial Production Bioemulsifier and its Applications

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