CHEMICAL AGENT FOR SUPPRESSION OF GROWTH OF SULPHATE REDUCING BACTERIA Russian patent published in 2013 - IPC C09K8/528 C09K8/54 E21B43/22 

FIELD: oil and gas industry.

SUBSTANCE: chemical agent for suppression of growth of sulphate reducing bacteria, which includes formaldehyde reaction product, contains hemiformals of aliphatic alcohols C₁-C₆, and mainly methanol and/or ethanol as reaction product, and in addition quaternary ammonium chlorous salt in commodity form at the following component ratio, wt %: the above salt 5-50; the above hemiformals are the rest.

EFFECT: enlarging the range of effective bactericides.

2 cl, 11 ex, 2 tbl