A pilot study on large-scale microbial enhanced oil recovery (MEOR) in Baolige Oilfield

Ke, Cong‐Yu; Lu, Gui; Li, Yongbin; Sun, Wu‐Juan; Zhang, Qun-Zheng; Zhang, Xun‐Li

doi:10.1016/j.ibiod.2017.12.009

Cited by 42 publications

(21 citation statements)

References 50 publications

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“…The biosurfactant at a concentration of 100% above CMC was incubated at 40 °C for 2 months. This period was chosen, because it is the average time required to observe the results of the injection of substances in a reservoir (Ke et al 2018). A 27.97°API medium oil was used to the experiment, also performed in triplicate.…”

Section: Microbial-enhanced Oil Recovery (Meor)mentioning

confidence: 99%

“…As an alternative, microbial-enhanced oil recovery (MEOR) is being used as a more cost-effective and ecofriendly strategy (Gao and Zekri 2011;Nazar et al 2011;Pereira et al 2013;Le et al 2015;Safdel et al 2017;Ke et al 2018). This mechanism uses microorganisms, whether indigenous or exogenous, in the production of metabolites to increase oil recovery (Passman et al 2013;Armstrong et al 2015;Le et al 2015;Jahanbani Veshareh et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Application of rhamnolipid biosurfactant produced by Pseudomonas aeruginosa in microbial-enhanced oil recovery (MEOR)

Câmara

Sousa

Neto

et al. 2019

J Petrol Explor Prod Technol

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In this study, the biosurfactant produced by Pseudomonas aeruginosa was evaluated in view of its ability to be used in Microbial-Enhanced Oil Recovery (MEOR). This microorganism was isolated from a soil artificially contaminated with crude oil and used to produce rhamnolipid using glycerol as the carbon source. The biosurfactant efficiently reduced water surface tension from 72 to 35.26 mN/m at its critical micelle concentration of 127 mg/L and emulsification rate (E 24) of 69% for the crude oil. Furthermore, it was demonstrated that the rhamnolipid can recover oil, even 2 months after its production, which shows that its biodegradability is not a disadvantage to the application in MEOR. The best result, for a biosurfactant concentration of 100% above the Critical Micelle Concentration (CMC) and petroleum with API gravity of 21.90, showed that the total recovery factor was 50.45 ± 0.79%, of which 11.91 ± 0.39% corresponds to MEOR.

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Section: Microbial-enhanced Oil Recovery (Meor)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Application of rhamnolipid biosurfactant produced by Pseudomonas aeruginosa in microbial-enhanced oil recovery (MEOR)

Câmara

Sousa

Neto

et al. 2019

J Petrol Explor Prod Technol

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show abstract

“…In the current situation of low oil price, MEOR is very promising, especially for the marginal reservoir and/or uneconomical reservoir, and microbial flooding was a potential alternative to other EOR/IOR methods, since it has high success ratio (as high 90% positive effects) according to a worldwide field test survey [4]. MEOR is very environmentally friendly and has no negative environmental impact [7,8]. Since the implementation of the revised China Environment Protection Law in 2015, environment protection in petroleum exploration and development has never been given more emphasis than ever, which obviously adds to the total cost.…”

Section: Geofluidsmentioning

confidence: 99%

“…It is notable that although biosurfactants are produced in MOER to reduce IFT, only few were reported to reduce IFT to an ultra-low level (10 -3 mN/m). [4,7,50,51]. However, there is no satisfactory criterion to characterize the capacity of microbes on crude oil emulsification in China.…”

Section: Biosurfactants In Microbialmentioning

confidence: 99%

Recent Advance of Microbial Enhanced Oil Recovery (MEOR) in China

She

Kong

et al. 2019

Geofluids

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Compared with other enhanced oil recovery (EOR) techniques like gas flooding, chemical flooding, and thermal production, the prominent advantages of microbial enhanced oil recovery (MEOR) include environment-friendliness and lowest cost. Recent progress of MEOR in laboratory studies and microbial flooding recovery (MFR) field tests in China are reviewed. High biotechnology is being used to investigate MFR mechanisms on the molecular level. Emulsification and wettability alternation due to microbial effects are the main interests at present. Application of a high-resolution mass spectrum (HRMS) on MEOR mechanism has revealed the change of polar compound structures before and after oil degradation by the microbial on the molecular level. MEOR could be divided into indigenous microorganism and exogenous microorganism flooding. The key of exogenous microorganism flooding was to develop effective production strains, and difficulty lies in the compatibility of the microorganism, performance degradation, and high cost. Indigenous microorganism flooding has good adaptation but no follow-up process on production strain development; thus, it represents the main development direction of MEOR in China. More than 4600 wells have been conducted for MEOR field tests in China, and about 500 wells are involved in MFR. 47 MFR field tests have been carried out in China, and 12 field tests are conducted in Daqing Oilfield. MFR field test’s incremental oil recovery is as high as 4.95% OOIP, with a typical slug size less than 0.1 PV. The input-output ratio can be 1 : 6. All field tests have shown positive results in oil production increase and water cut reduction. MEOR screening criteria for reservoirs in China need to be improved. Reservoir fluid, temperature, and salinity were the most important three parameters. Microbial flooding technology is mature in reservoirs with temperature lower than 80°C, salinity less than 100,000 ppm, and permeability above 5 mD. MFR in China is very close to commercial application, while MFR as quaternary recovery like those in post-polymer flooding reservoirs needs further study.

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“…IMEOR relies of the combination of various mechanisms, such as oil emulsification, oil bio-degradation, gas production, acid production and viscosity reduction [11,14,15]. In a large-scale IMEOR pilot field, 210,000 tonnes of crude oil were produced cumulatively by injection of nutrients with water [16].…”

Section: Introductionmentioning

confidence: 99%

Functional microbial stimulation for oil recovery enhancement based on microbial community analysis

Liu

et al. 2018

Biotechnology & Biotechnological Equipment

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This study stimulated functional microbial adaptation to the extreme environment of the Luliang oilfield reservoir and assessed the impact of indigenous microbial enhanced oil recovery treatment on the microbial community and oil recovery. By high-resolution pyro-sequencing, Acinetobacter, Pseudomonas, Sphingomonas, Thauera, Arcobacter and Hyphomonas were regarded as suitable candidates and a customised nutrient mixture was selected to activate the target microbes. The interfacial tension of crude oil and water decreased from 29.76 mN m À1 to 0.65 mN m À1 and the emulsion stability index increased from 5% to 92% after customised nutrient culture. The oil biodegradation experiments after the cultivation exhibited positive effects in degrading aromatics, resins and asphaltenes fractions and improving the mobility. Six target genera were activated markedly after 96 h of incubation. The oil recovery was enhanced from 51.2% to 60.7% using fermentation broth injection. Thus, injecting a customised nutrient mixture with injection brine into the stratum to stimulate functional microbes has the potential to enhance oil recovery in the Luliang oilfield.

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A pilot study on large-scale microbial enhanced oil recovery (MEOR) in Baolige Oilfield

Cited by 42 publications

References 50 publications

Application of rhamnolipid biosurfactant produced by Pseudomonas aeruginosa in microbial-enhanced oil recovery (MEOR)

Application of rhamnolipid biosurfactant produced by Pseudomonas aeruginosa in microbial-enhanced oil recovery (MEOR)

Recent Advance of Microbial Enhanced Oil Recovery (MEOR) in China

Functional microbial stimulation for oil recovery enhancement based on microbial community analysis

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