Microbiological Production of Surfactant From Agricultural Residuals for IOR Application

Bala, G.A.; Bruhn, Debby; Fox, Sandra; Noah, Karl; Thompson, D. J.

doi:10.2523/75239-ms

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…[2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] MEOR is a successful process; however, it is limited to specific conditions of low temperature and salinity.…”

Section: Introductionmentioning

confidence: 99%

New Incubated Pseudomonas Aeruginosa Bacteria for Increasing Oil Recovery Under Reservoir Conditions

Samir¹,

Ela²,

Marsafy

et al. 2010

Proceedings of North Africa Technical Conference and Exhibition

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Laboratory studies show the existence of some strains of bacteria in field crude oils and formation waters. This work is concerned with studying the effect of the reservoir conditions such as temperature, salinity and lithology on the indigenous bacterial activities. Such study is an original contribution to the knowledge of microbial enhanced oil recovery (MEOR).Egyptian MEOR project at Cairo University succeeded to isolate a surfactant-producing microorganism "Pseudomonas Aeruginosa" from crude oil produced from an Egyptian oil field. Several displacement tests were conducted in sand pack model. A modified media was used to incubate and improve the growth rate, behavior and stimulation of Pseudomonas Aeruginosa.The results obtained from the current work showed that Pseudomonas Aeruginosa succeeded to increase the oil recovery by 20%. Pseudomonas Aeruginosa becomes able to resist the effect of temperature up to 70ºC and salinity up to 150,000 ppm, when a specific incubation technique is applied. There is no significant effect on the behavior of the bacteria in the presence of the Dolomite and Kailinite inside the reservoir. The value of the oil recovery factor in case of incubation of the bacteria outside the model is greater than its value in case of incubation inside the model by about 5%.The results obtained are discussed and analyzed in terms of surface tension, hydrogen ion concentrations, viscosity, and conductivity of the effluent solutions.

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“…[2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] MEOR is a successful process; however, it is limited to specific conditions of low temperature and salinity.…”

Section: Introductionmentioning

confidence: 99%

New Incubated Pseudomonas Aeruginosa Bacteria for Increasing Oil Recovery Under Reservoir Conditions

Samir¹,

Ela²,

Marsafy

et al. 2010

Proceedings of North Africa Technical Conference and Exhibition

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Biosurfactants Produced From Agriculture Process Waste Streams To Improve Oil Recovery in Fractured Carbonate Reservoirs

Johnson

Salehi

Eisert

et al. 2007

International Symposium on Oilfield Chemistry

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This report describes the progress of our research during the first 30 months (10/01/2004 to 03/31/2007) of the original three-year project cycle. The project was terminated early due to DOE budget cuts. This was a joint project between the Tertiary Oil Recovery Project (TORP) at the University of Kansas and the Idaho National Laboratory (INL). The objective was to evaluate the use of low-cost biosurfactants produced from agriculture process waste streams to improve oil recovery in fractured carbonate reservoirs through wettability mediation.Biosurfactant for this project was produced using Bacillus subtilis 21332 and purified potato starch as the growth medium. The INL team produced the biosurfactant and characterized it as surfactin. INL supplied surfactin as required for the tests at KU as well as providing other microbiological services.Interfacial tension (IFT) between Soltrol 130 and both potential benchmark chemical surfactants and crude surfactin was measured over a range of concentrations. The performance of the crude surfactin preparation in reducing IFT was greater than any of the synthetic compounds throughout the concentration range studied but at low concentrations, sodium laureth sulfate (SLS) was closest to the surfactin, and was used as the benchmark in subsequent studies.Core characterization was carried out using both traditional flooding techniques to find porosity and permeability; and NMR/MRI to image cores and identify pore architecture and degree of heterogeneity. A cleaning regime was identified and developed to remove organic materials from cores and crushed carbonate rock. This allowed cores to be fully characterized and returned to a reproducible wettability state when coupled with a crude-oil aging regime. Rapid wettability assessments for crushed matrix material were developed, and used to inform slower Amott wettability tests. Initial static absorption experiments exposed limitations in the use of HPLC and TOC to determine surfactant concentrations. To reliably quantify both benchmark surfactants and surfactin, a surfactant ion-selective electrode was used as an indicator in the potentiometric titration of the anionic surfactants with Hyamine 1622.The wettability change mediated by dilute solutions of a commercial preparation of SLS (STEOL CS-330) and surfactin was assessed using two-phase separation, and water flotation techniques; and surfactant loss due to retention and adsorption on the rock was determined. Qualitative tests indicated that on a molar basis, surfactin is more effective than STEOL CS-330 in altering wettability of crushed Lansing-Kansas City carbonates from oil-wet to water-wet state. Adsorption isotherms of STEOL CS-330 and surfactin on crushed Lansing-Kansas City outcrop and reservoir material showed that surfactin has higher specific adsorption on these oomoldic carbonates.Amott wettability studies confirmed that cleaned cores are mixed-wet, and that the aging procedure renders them oil-wet. Tests of aged cores with no initial water saturation resulted...

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Microbiological Production of Surfactant From Agricultural Residuals for IOR Application

Abstract: Utilization of surfactants for IOR is an accepted technique with high potential. However, technology application is frequently limited by cost.

Cited by 2 publications

References 6 publications

New Incubated Pseudomonas Aeruginosa Bacteria for Increasing Oil Recovery Under Reservoir Conditions

New Incubated Pseudomonas Aeruginosa Bacteria for Increasing Oil Recovery Under Reservoir Conditions

Biosurfactants Produced From Agriculture Process Waste Streams To Improve Oil Recovery in Fractured Carbonate Reservoirs

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