AMPP Store - Products tagged with 'biofilm'

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Preservative Biocide Selection and Performance in High Pressure High Temperature Bioreactors using a Thermophilic, Hydraulic-Fracturing Relevant Culture

Product Number: 51323-18967-SG

Author: Ethan Solomon, Philip Maun, Veronica Silva, and Ken Wunch

Publication Date: 2023

$20.00

Biocides are used in hydraulic fracturing operations to control the growth of contaminant microorganisms that lead to corrosion, souring, and conductivity loss.1,2 A variety of biocides are utilized and can be classified by mechanism of action, speed of kill, and the length of residual activity.
In general, rapid-acting biocides such as chlorine dioxide (ClO2) and DBNPA (2,2-dibromo-3- nitrilopropionamide) inactivate bacteria quickly but have little to no residual activity. Glutaraldehyde (Glut) reacts more slowly and provides some residual activity, particularly at lower wellbore or reservoir temperatures.

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Severe microbiologically influenced corrosion (MIC) of pure zinc and galvanized steel in the presence of Desulfovibrio vulgaris

Product Number: 51320-14537-SG

Author: Di Wang, Tuba Unsal, Tingyue Gu, Sith Kumseranee, Suchada Punpruk

Publication Date: 2020

$20.00

Zinc and its alloys are used as sacrificial anodes because zinc is an active metal. Carbon steel can be coated with zinc to protect against corrosion. These metals are known as galvanized steel. In this work, microbiologically influenced corrosion (MIC) of pure zinc and galvanized steel caused by a sulfate reducing bacterium was investigated. After 7 days of incubation in 125 mL anaerobic vials with 100 mL culture medium and 1 mL inoculum, the sessile cell count on the galvanized steel was slightly higher than that on pure zinc. The abiotic weight loss for pure zinc was 1.4 ± 0.1 mg/cm2 vs. 4.6 ± 0.1 mg/cm2 for galvanized steel after 7 days of anaerobic incubation at 37oC. The weight losses for galvanized steel and pure zinc were 31.5 ± 2.5 mg/cm2 and 35.4 ± 4.5 mg/cm2, respectively, which were 10X larger than the previously reported carbon steel weight loss in the same SRB broth. Electrochemical corrosion tests confirmed the severe corrosion of these two metals. The corrosion current densities of galvanized and pure zinc were 25.5 µA/cm2 and 100 µA/cm2, respect􀀀vely at the end of the 7-day incubation with SRB, confirming that pure zinc was more prone to SRB MIC than galvanized steel. In both cases, the corrosion product was mainly ZnS. Three MIC mechanisms were possible for the severe corrosion. Extracellular electron transfer MIC is thermodynamically favorable for Zn. Furthermore, the detection of H2 evolution in the vials suggest that proton attack and H2S attack occurred against Zn in the SRB broth with neutral pH after passive film damage by the SRB biofilm.

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TM0106-2016-SG, Detection, Testing, and Evaluation of Microbiologically Influenced Corrosion (MIC) on External Surfaces of Buried Pipelines

Product Number: 21248-SG

ISBN: 1-57590-206-0

Publication Date: 2016

$109.00

Types of microorganisms and mechanisms by which MIC occurs on external surfaces of buried, ferrous-based metal pipelines. Testing for the presence of bacteria, research results, and interpretation.

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Why Are Glutaraldehyde/Quaternary Ammonium Biocides So Common In The Oil And Gas Industry?

Product Number: 51322-17640-SG

Author: Ethan Solomon, Jon Raymond, Makensie Moore, Nigel Watson, Anup Rama, Nora Eibergen, Ken Wunch

Publication Date: 2022

$20.00

Oil and gas operations worldwide are impacted by the presence of microorganisms. A variety of microorganisms can be found in the oilfield, dependent on the type of operation, geology, location, water source and water treatment utilized. Biocides are used in all stages of oil and gas development to control microorganisms and their detrimental impacts on production such as corrosion, biofouling, and souring. A wide number of biocides are used to control microorganisms, ranging from oxidizing biocides that react quickly but leave no residual activity, to preservatives which act slowly, but provide antimicrobial activity for weeks or months at a time. The spectrum of biocides used in oil and gas are covered by several excellent reviews and will not be detailed in this paper.

Products tagged with 'biofilm'

Preservative Biocide Selection and Performance in High Pressure High Temperature Bioreactors using a Thermophilic, Hydraulic-Fracturing Relevant Culture

Severe microbiologically influenced corrosion (MIC) of pure zinc and galvanized steel in the presence of Desulfovibrio vulgaris

TM0106-2016-SG, Detection, Testing, and Evaluation of Microbiologically Influenced Corrosion (MIC) on External Surfaces of Buried Pipelines

Why Are Glutaraldehyde/Quaternary Ammonium Biocides So Common In The Oil And Gas Industry?

Association for Materials Protection and Performance