Inadequate disinfection and treatment of microorganisms such as SRB’s (Sulphate Reducing Bacteria), Acid Producing Bacteria and Slime Forming Bacteria in production water and stimulation fluids, used in the recovery of oil and gas has been proven to lead to a host of negative consequences, including; Souring the well with hydrogen sulphide gas H2S, Microbiological induced corrosion (MIC) and Plugging of the well (Iron Sulphide).
With increasingly strict regulations on chemical use in well injection applications, together with the rising costs of chemicals and health and safety concerns, there has been an increasing effort to reduce or eliminate chemicals and biocides from the process.
Working with Conoco Phillips, atg UV carried out the original research (1993) into the effectiveness of UV treatment for Sulphate Reducing Bacteria (SRB) reduction used in well injection applications, which led to the supply of a number of offshore UV treatment plants being installed in the Norwegian North Sea sector, with the largest plant – Eldfisk and Ekofisk treating 4,500 m3/hr and 4,000 m3/hr daily.
Since 1993, atg Evoqua has successfully used UV for the control of microorganisms such as SRB’s, Acid Producing Bacteria and Slime Forming Bacteria in oil and gas recovery well injection applications.
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