SU833559A1 - Bactericide of sulfate-reducing bacteria - Google Patents

Description

(54) BACTERICIDE OF SULFAT RESTORING BACT RI (secondary products of the life of SSC and equipment corrosion) in the bottomhole zone of injection wells. In addition, hydrogen sulphide decreases in oil products: in oil, oil gas and in reservoir water - significantly deteriorating their quality, as a result, in practice, great difficulties are created during field preparation, transportation and subsequent processing at oil refineries. and petroleum gas containing hydrogen sulfide. The known method, according to which the water injected into the wells is treated with formalin t L However, this method is not enough. effective. The most effective means of combating biological corrosion is the treatment of contaminated media with bactericides — chemical reagents that destroy bacteria, and bacteriostats, which inhibit the growth of microorganisms for some time. Due to the fact that bacteria are easily adapted to reagents with bacteriostatic properties, it is more advisable to use bactericides 2. However, the experience of combating microbiological corrosion showed that universal bactericides are not essential. In each specific case, laboratory development of the protective effect of a whole range of reagents on bacteria cultures isolated from the environment where the bactericide is planned is taken into account, taking into account the specific living conditions of microorganisms. Chemical dyes, impact on the viability of microorganisms. often cause a mutation process in the bacterial cell, which leads to modification changes in their structure. Virtually one mutant is capable of initiating a whole clone of microorganisms with a new specific property. The likelihood of such forms of microorganisms is very high. Therefore, it has now become necessary to expand the range of bactericides used in the fight against sulfate reduction, because the likelihood of a mutant resistant to two or several biologically active substances is reduced immediately. Treatment of injection wells of oil fields with several bactericides in the complex or in turn gives a much more tangible positive bactericidal effect. It is known to use m-nitrobromobenzene in the chemical industry for the synthesis of amines in production; : Azo dyes Z. The purpose of the invention is the detection of the sulfate bacteria bactericideTacting bacteria. This goal is achieved by using m-nitrobromobenzene as a sulfate toxic bactericide bactericide, which suppresses the viability of the accumulating sulfate toxic culture of the bacteria. SUMMARY OF THE INVENTION The essence of the invention is that in order to suppress the viability of sulfate surrogates. bacteria proposed m-nitrobromobenz6l, not previously used for these purposes, and which suppresses the growth of microorganisms by 94-95% at a concentration of 100 mg / l and more, and by 85% at a concentration of 10-50 mg / l. Example. The treatment is subjected to water containing the cumulative culture of sulfate surrogatesTan bacteria. The results of biological tests of m-nitrobromobenzene on mesophilic accumulative culture of sulfate-reducing bacteria (SSC) are presented in the table.

3.0

200

5.98

92.70

20.56

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Claims (1)

The claims The use of m-nitrobromobenzene as a bactericide of sulfate-reducing bacteria.