Fractured carbonate reservoirs sweep efficiency improvement using microbial biomass

Al-Hattali, Rayah Rashid; Al-Sulaimani, Hanaa; Al-Wahaibi, Yahya; Al-Bahry, Saif N.; Elshafie, Abdulkadir E.; Al-Bemani, Ali; Joshi, Sanket

doi:10.1016/j.petrol.2013.11.003

Cited by 11 publications

(11 citation statements)

References 7 publications

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“…Several morphologically different spore-forming bacteria were isolated from different oil contaminated soil samples collected from Oman, and screened for biosurfactant production. Out of those isolates, a facultative aerobic bacteria B. licheniformis W16 produced biosurfactant (Al-Sulaimani et al, 2011a) and propagated under anaerobic conditions in the fractured carbonate rocks and enhanced the oil recovery by selective plugging (Al-Hattali et al, 2013). Thus, it was further selected in current study to investigate the effect of different carbohydrates in the minimal media and the potential of produced biosurfactant in biosurfactant based MEOR.…”

Section: Resultsmentioning

confidence: 99%

Production, Characterization, and Application of Bacillus licheniformis W16 Biosurfactant in Enhancing Oil Recovery

et al. 2016

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The biosurfactant production by Bacillus licheniformis W16 and evaluation of biosurfactant based enhanced oil recovery (EOR) using core-flood under reservoir conditions were investigated. Previously reported nine different production media were screened for biosurfactant production, and two were further optimized with different carbon sources (glucose, sucrose, starch, cane molasses, or date molasses), as well as the strain was screened for biosurfactant production during the growth in different media. The biosurfactant reduced the surface tension and interfacial tension to 24.33 ± 0.57 mN m−1 and 2.47 ± 0.32 mN m−1 respectively within 72 h, at 40°C, and also altered the wettability of a hydrophobic surface by changing the contact angle from 55.67 ± 1.6 to 19.54°± 0.96°. The critical micelle dilution values of 4X were observed. The biosurfactants were characterized by different analytical techniques and identified as lipopeptide, similar to lichenysin-A. The biosurfactant was stable over wide range of extreme environmental conditions. The core flood experiments showed that the biosurfactant was able to enhance the oil recovery by 24–26% over residual oil saturation (Sor). The results highlight the potential application of lipopeptide biosurfactant in wettability alteration and microbial EOR processes.

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Section: Resultsmentioning

confidence: 99%

Production, Characterization, and Application of Bacillus licheniformis W16 Biosurfactant in Enhancing Oil Recovery

et al. 2016

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“…In all cases, it was necessary to have an incubation (shut-in) period after injection of bacteria and/or nutrients to produce more oil. This incubation period allows the bacteria to grow inside the core, to plug more, and to produce some useful substances that may help releasing the trapped oil (Al-Hattali et al, 2013;Cusack et al, 1992;Suthar et al, 2009;Kaster et al, 2012;Yakimov et al, 1997). To the best of our knowledge, no core flooding study has been conducted in low permeable chalk.…”

Section: Discussionmentioning

confidence: 99%

“…Even though studies of microbial plugging have been conducted by many researchers, to the best of our knowledge none has been performed on chalk. Earlier studies have been conducted in packed glass beads (Shaw et al, 1985), sandstones (Crescente et al, 2005;Cusack et al, 1992;Raiders et al, 1986Raiders et al, , 1989Raleigh and Flock, 1965;Yakimov et al, 1997), sandpacks (Cusack et al, 1992;Suthar et al, 2009), outcrop limestones (Al-Hattali et al, 2013;Kaster et al, 2012;Raleigh and Flock, 1965) and outcrop carbonates Contents lists available at ScienceDirect journal homepage: www.elsevier.com/locate/petrol (Salehizadeh and Mohammadizad, 2009;Biria et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Investigation of spore forming bacterial flooding for enhanced oil recovery in a North Sea chalk Reservoir

Halim

Nielsen

Lantz

et al. 2015

Journal of Petroleum Science and Engineering

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“…The percentage of aromatic compounds was reduced, and the concentration of lighter hydrocarbons has increased (Figure 8a-c; Tables 2 and 3). SEM analysis of the core indicated the presence of both isolates inside the core, which indicated their ability to grow anaerobically (Figure 9a The migration of isolates inside the core was further determined by SEM analysis and the bioconversion of heavy crude oil was estimated by GC-MS analysis [3,[40][41][42]. The extra recovered oil was analyzed using GC-MS which revealed that the biotransformation of heavy crude has occurred anaerobically.…”

Section: Core Flooding Experimentsmentioning

confidence: 97%

Microbial-Enhanced Heavy Oil Recovery under Laboratory Conditions by Bacillus firmus BG4 and Bacillus halodurans BG5 Isolated from Heavy Oil Fields

Shibulal

Al-Bahry

Al-Wahaibi

et al. 2018

Colloids and Interfaces

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Microbial Enhanced Oil Recovery (MEOR) is one of the tertiary recovery methods. The high viscosity and low flow characteristics of heavy oil makes it difficult for the extraction from oil reservoirs. Many spore-forming bacteria were isolated from Oman oil fields, which can biotransform heavy crude oil by changing its viscosity by converting heavier components into lighter ones. Two of the isolates, Bacillus firmus BG4 and Bacillus halodurans BG5, which showed maximum growth in higher concentrations of heavy crude oil were selected for the study. Gas chromatography analysis of the heavy crude oil treated with the isolates for nine days showed 81.4% biotransformation for B. firmus and 81.9% for B. halodurans. In both cases, it was found that the aromatic components in the heavy crude oil were utilized by the isolates, converting them to aliphatic species. Core flooding experiments conducted at 50 • C, mimicking reservoir conditions to prove the efficiency of the isolates in MEOR, resulted in 10.4% and 7.7% for B. firmus and B. halodurans, respectively, after the nine-day shut-in period. These investigations demonstrated the potential of B. firmus BG4 and B. halodurans BG5 as an environmentally attractive approach for heavy oil recovery.

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Fractured carbonate reservoirs sweep efficiency improvement using microbial biomass

Cited by 11 publications

References 7 publications

Production, Characterization, and Application of Bacillus licheniformis W16 Biosurfactant in Enhancing Oil Recovery

Production, Characterization, and Application of Bacillus licheniformis W16 Biosurfactant in Enhancing Oil Recovery

Investigation of spore forming bacterial flooding for enhanced oil recovery in a North Sea chalk Reservoir

Microbial-Enhanced Heavy Oil Recovery under Laboratory Conditions by Bacillus firmus BG4 and Bacillus halodurans BG5 Isolated from Heavy Oil Fields

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