The need for detection and control of microorganisms, primarily bacteria, in oil field waters has been known for many years. The main bacterial problems are corrosion due to concentration cells and metabolic products such as hydrogen sulfide (H2S) and formation of harmful by-products. The rapidly increasing cost of materials replacement as well as the revenue lost while water recovery systems are being repaired make an economical and effective microorganism control program vitally essential. Another area of increasing interest is degradation of biodegradable specialty materials, such as fracturing fluids and waterflooding polymers.

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