Microbial Enhanced Oil Recovery

Rashedi, Hamid; Yazdian, Fatemeh; Naghizadeh, Simin

doi:10.5772/34666

Cited by 6 publications

(4 citation statements)

References 55 publications

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“…Microbial enhanced oil recovery (MEOR) technology has emerged as one of the most promising methods for oil recovery due to its simple process, low investment, and minimal impact on the environment. MEOR involves the injection of nutrients and suitable bacteria that are able to grow under anaerobic reservoir conditions into a reservoir [3]. MEOR bacteria are carried by injected water and accumulate in porous oil/rock and oil/water interfaces.…”

Section: Introductionmentioning

confidence: 99%

Research on Microbial Community Structure in Different Blocks of Alkaline–Surfactant–Polymer Flooding to Confirm Optimal Stage of Indigenous Microbial Flooding

Liu,

Zhang,

et al. 2024

Applied Sciences

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The microbial communities associated with alkaline–surfactant–polymer (ASP)-flooded reservoirs have rarely been investigated. In this study, high-throughput sequencing was used to analyse the indigenous microbial communities in two different blocks, the water flooding after the alkaline–surfactant–polymer flooding block and the alkaline–surfactant–polymer flooding block, and to ascertain the optimal stage for the implementation of indigenous microbial oil recovery technology. The different displacement blocks had significant effects on the indigenous microbial community at the genus level according to an alpha diversity analysis and community composition. In water flooding after alkaline–surfactant–polymer flooding, the dominant genus of Pseudomonas exceeded 30%, increasing to 52.1% in alkaline–surfactant–polymer flooding, but alpha diversity decreased. Through a co-occurrence network analysis, it was found that the complexity of the water flooding after alkaline–surfactant–polymer flooding was higher than that of alkaline–surfactant–polymer flooding. This means that the water flooding ecosystem after alkaline–surfactant–polymer flooding was more stable and less susceptible to external environmental influences. In addition, there were significant differences in the functional redundancy of microbial communities in different blocks. In summary, the optimal stage for implementing local microbial oil recovery technology may be water flooding after alkaline–surfactant–polymer flooding.

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Section: Introductionmentioning

confidence: 99%

Research on Microbial Community Structure in Different Blocks of Alkaline–Surfactant–Polymer Flooding to Confirm Optimal Stage of Indigenous Microbial Flooding

Liu,

Zhang,

et al. 2024

Applied Sciences

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“…A wide range of bacteria has been reported as biosurfactant producers. The genera Pseudomonas and Bacillus are extremely studied as rhamnolipids and lipopeptides producers (10)(11)(12)(13). Pseudomonas guguanesis is a member of the genus Pseudomonas that can be adapting to grow in crude oil, n-hexadecane, diesel, and kerosene-polluted environments, and exert emulsification activity for hydrocarbon bioremediation, due to their ability to produce biosurfactant (14).…”

Section: Introductionmentioning

confidence: 99%

Hyper-Production of Biosurfactant by Pseudomonas guguanensis Strain Iraqi ZG.K.M through Random Mutagenesis

Faisal,

Alobaidi,

Mahdi

2023

JOBRC

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Background: With growing environmental concern, interest was increased in research anddevelopment of environmentally friendly substances. Microbial surfactants are nontoxic andbiodegradable bioproducts that are widely used in medical, pharmaceutical, agricultural,industrial, food, cosmetics, and refinery applications. However, the main challenges in theproduction of biosurfactants are the high production cost and the limited yield. The improvementof biosurfactant production depend on many strategies, such as the use of low-cost raw materials,adjusting medium and growth conditions, and the selection of hype-producing strains.Objective: The study was conducted to obtain Pseudomonas guguanensis strain Iraqi ZG.K.Mmutant with higher biosurfactant production, through random mutagenesis.Materials and Methods: Chemical mutagen (acridine orange) in different concentrations andthe physical mutagen (UV irradiation) were used for the production of random mutagenesis inPseudomonas guguanensis strain Iraqi ZG.K.M. The biosurfactant hype-producing strain wasselected depending on CTAB test, E 24 %, and the measurement of surface tension.Results: A clear indication of the efficiency of UV light in producing biosurfactant mutant. Inwhich, a higher E 24 % (78%) and the lowest surface tension (33 mN/m) were recorded withZUVM2 mutant.Conclusion : UV light can successfully used to mutagenize Pseudomonas guguanensis strainIraqi ZG.K.M to obtain hyper-producer mutants of biosurfactant that used in many applications.

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“…One of the best EOR methods is using microorganisms and their products to recover the oil in reservoirs that is known as microbial enhanced oil recovery (MEOR) [3]. MEOR operations have many advantages such as easy application [4], easy to handle, economic attraction and less expensive set up [5], and also low energy input requirement [6].…”

Section: Introductionmentioning

confidence: 99%

CFD Simulation of Biosurfactant Flooding into a Micromodel for Enhancing the Oil Recovery

Jafari¹,

Pour²,

Gharibshahi³

2016

IJCEA

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Abstract-In this research, the effect of biosurfactant flooding on the oil recovery factor using a CFD method is investigated. The porous medium is a 2D micromodel, and COMSOL Multiphysics 4.3 software is used to create the geometry and solving the governing equations on the system. Because of two different fluids exist into the porous medium; volume of fluid multiphase model was used for studying the fluid flow in the micromodel. Comparison of numerical results with the experimental data was done and a good agreement was observed between them. In addition, numerical data show that addition of the biosurfactant to the injected fluid causes an enhancement in the oil recovery factor and decreases the fingering effect. Also by biosurfactant flooding the breakthrough time increases, the surface tension between injected fluid and oil reduces and more surface area of the micromodel will be in contact with the injected fluid. So the oil recovery factor improves. Of course it should be mentioned that the shear stress acting on the biosurfactant is very harmful and it reduces its performance.Index Terms-Biosurfactant, CFD, micromodel, oil recovery factor.

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Microbial Enhanced Oil Recovery

Cited by 6 publications

References 55 publications

Research on Microbial Community Structure in Different Blocks of Alkaline–Surfactant–Polymer Flooding to Confirm Optimal Stage of Indigenous Microbial Flooding

Research on Microbial Community Structure in Different Blocks of Alkaline–Surfactant–Polymer Flooding to Confirm Optimal Stage of Indigenous Microbial Flooding

Hyper-Production of Biosurfactant by Pseudomonas guguanensis Strain Iraqi ZG.K.M through Random Mutagenesis

CFD Simulation of Biosurfactant Flooding into a Micromodel for Enhancing the Oil Recovery

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