Requirements on biocides

Legal requirements in Europe for the use of biocides are given by the EU Regulation (EU) No. 528/2012 (Biocidal Product Regulation, BPR) which was set into force 1st September, 2013.

Only those biocides are allowed for use which are listed in a positive list so called "List of participants and applicants whose dossiers are being examined under the review programme concerning the placing of biocidal products on the market"  (EC) No 2032/2003 for existing active substances used in biocidal products and which meets the requirements of certain product types. Biocides for oil & gas applications are subject to product type 6, 11 or 12.

Moreover, the use and discharge of chemicals into the North Atlantic and Baltic sea is regulated.
The offshore oil and gas industry strategy of the OSPAR Commission recommended the adoption of a Harmonised Offshore Chemical Notification Format (HOCNF) within a harmonised mandatory control system for the use and reduction of the discharge of offshore chemicals. Chemicals have to be approved by evaluating their environmental impact. This regulation is typically referred to as CEFAS approval. Chemicals have to meet e.g. requirements regarding biodegradation in seawater, bioaccumulation and toxicity to aquatic organisms.

Requirements on biocides are:

  • Broad, balanced spectrum of highly biocidal effect (incl. sulfate-reducing bacteria)
  • Prevention of microbiologically influenced corrosion (MIC)
  • Low toxicological profile
  • Low environmental impact by biodegradability and non bio accumulation
  • Non corroding properties
  • Solubility in water as well as in oil
  • High efficacy and stability even at high temperature and high pH
  • Good storage stability even at high or low temperatures

schülke oilfield biocides

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