Characterization of microbial souring in Berea‐sand porous medium with a North Sea oil field inoculum

Chen, Ching‐I; Reinsel, Mark A.

doi:10.1080/08927019609378302

Cited by 10 publications

(2 citation statements)

References 18 publications

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“…In addition, general corrosion rates will also increase with addition of acid products and in the case of acetic acid, acetic acid vapour can flash into the vapour phase leading to gas side corrosion, as the acetic acid condenses in the gas side facilities 17,19,20 . Other concerns that must be addressed when using acetic acid based products is the fact that dissociation to acetate provides a potential nutrient for bacteria 21 . Consequently there is an additional need to control any stimulated bacteria, especially sulphate reducing bacteria (SRB), and prevent localized bioaccumulations that will cause hydrogen sulphide to appear 10,17,20. .…”

Section: Acids and Acidic Demulsifiersmentioning

confidence: 99%

Controls On Soap Scale Formation, Including Naphthenate Soaps - Drivers And Mitigation

Turner¹,

Smith²

2005

Proceedings of SPE International Symposium on Oilfield Scale

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractSoap deposits, which can manifest as emulsion soaps (carboxylates) or hard deposits (naphthenates), are an increasingly recognized cause of some unique flow assurance and crude marketing problems in oilfield processes. This paper illustrates the physical and chemical drivers for the generation of soap scales in a number of differing and challenging production system environments. Mitigation options for the successful treatment of soap scales are also discussed. Where possible, data presented in this paper are taken from field trials in order to illustrate these drivers and the impact of successful mitigation strategies.An understanding of the key fluid characteristics allows prescreening of fluids from new field developments that are likely to develop naphthenate/soap deposits and allows diagnosis of the likely soap scaling problems. The critical fluid characteristics required for the generation of naphthenate soaps are different from those required for generation of carboxylate soaps. An empirical approach to predicting the degree of risk for soap generation, based on oil and produced water properties, can be adopted, although there are knowledge and data gaps that increase the uncertainty of this approach.Physical parameters, such as pressure, are known to influence soap generation. However, other physical parameters that are key in the design and operation of an oil-field process can also influence the soap severity. These parameters include temperature, shear, electrostatic fields, water cut and fluidfluid incompatibility; examples of each are discussed. This information can be used in the design stages of an oil-field process where engineers must think beyond the conventional process designs.Despite the fact that the impact of a soap problem can be considerably reduced by adjustment of physical design and operating parameters, chemicals are usually required to provide complete mitigation of soap. Chemical mitigation (acid and non-acid) guidelines are discussed with field examples and the need for a chemical management and monitoring programme.

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Section: Acids and Acidic Demulsifiersmentioning

confidence: 99%

Controls On Soap Scale Formation, Including Naphthenate Soaps - Drivers And Mitigation

Turner¹,

Smith²

2005

Proceedings of SPE International Symposium on Oilfield Scale

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“…Sulfate -reducing bacteria are well known to petroleum microbiologists because the hydrogen sulfide they generate induces corrosion of metal pipes and equipment, interferes with downstream processing, and poses a health and safety risk to workers [ 10,14,16,17 ]. Particularly when seawater is injected into a reservoir in a secondary recovery process, the conditions are ripe for the activity of sulfate -reducing bacteria [ 1,2,4,20 ]. In such waterflood operations, high concentrations of sulfate, the availability of organic compounds such as fatty acids that can serve as electron donors, low oxygen tensions, and warm temperatures combine to promote the growth of sulfate -reducing microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Action of glutaraldehyde and nitrite against sulfate-reducing bacterial biofilms

Gardner

Stewart

2002

Journal of Industrial Microbiology and Biotechnology

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A continuous flow reactor system was developed to evaluate the efficacy of antimicrobial treatments against sulfate-reducing bacterial biofilms. An annular reactor operating at a nominal dilution rate of 0.5 h(-1) was fed one-tenth strength Postgate C medium diluted in 1.5% NaCl and was inoculated with a mixed culture enriched from oilfield-produced water on the same medium. Thin biofilms developed in this reactor after 2 days of operation. The activity of these biofilms resulted in approximately 50 mg S l(-1) of sulfide at steady state prior to biocide treatment. Biocide efficacy was quantified by recording the time required for sulfide production to recover following an antimicrobial treatment. In a control experiment in which pure water was applied, the time required to reach 10 mg S l(-1) sulfide after the treatment was 1.7+/-1.2 h, whereas the time to reach this level of sulfide after a pulse dose of 500 mg l(-1) glutaraldehyde was delayed to 61+/-11 h. Nitrite treatment suppressed sulfide production as long as the nitrite concentration remained above 15 mg N l(-1). Sulfide production recovered more rapidly after nitrite treatment than it did after glutaraldehyde treatment.

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Petroleum Reservoirs, Influence, Activity and Growth of Subsurface Microflora in

Bass

Lappin‐Scott

2003

Encyclopedia of Environmental Microbiology

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Origins of Hydrocarbon Reservoirs Oil‐Bearing Rock Formations as Microbial Habitats Microbiology of Oil‐Bearing Rocks Microbial Consequences of Oil Reservoir Exploitation Application of Microbial Technology for Exploitation of Petroleum Reservoirs

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Characterization of microbial souring in Berea‐sand porous medium with a North Sea oil field inoculum

Cited by 10 publications

References 18 publications

Controls On Soap Scale Formation, Including Naphthenate Soaps - Drivers And Mitigation

Controls On Soap Scale Formation, Including Naphthenate Soaps - Drivers And Mitigation

Action of glutaraldehyde and nitrite against sulfate-reducing bacterial biofilms

Petroleum Reservoirs, Influence, Activity and Growth of Subsurface Microflora in

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