Drilling and Other Oilfield Fluids
WTB-1 biocide is excellent choices for use in preserving drilling muds and other oilfield fluids that are typically alkaline in pH to ensure microbial protection. The typical use rates of 25 to 500 ppm as active.
Water Flood Injection Water
WTB-1 biocide exhibits excellent stability in oilfield injection waters, which ensures that its antimicrobial activity will not be diminished in long pipelines. Hard waters or brines do not adversely affect its biocidal effectiveness (the active ingredient - glutaraldehyde is non-ionic so it won't interfere with the action of corrosion inhibitors or surfactants). WTB-1 biocide is typically slug dosed into the injection water on a daily or weekly basis at 50 to 2000 ppm active for 4 – 6 hours (the exact treatment regimen will depend on the condition of the system).
The presence of sulfate reducing bacteria (SRB's) and acid producing bacteria (APB's) presents a serious challenge for effective control of microbial contamination in a production system. Like its use in waterflood injection systems, WTB-1 biocide is typically added in slug doses on a daily to weekly basis at concentrations of 50 to 2000 ppm as active.
Hydrocarbon Storage Facilities
The water bottoms in hydrocarbon storage tanks can often be contaminated with SRB's and serve as hosts to biofilms that can lead to the formation of H2S and corrosion of hydrocarbon storage tanks. WTB-1 biocide preferentially partitions into the water phase in a mixed hydrocarbon/water system and so would attack any microorganisms that are present in these water bottoms.