Ecological regulating and controlling method for sulfate reducing bacteria liveness in surface water of oil field, and used restrainer thereof

Abstract

A method for the ecological regulation and control of the activity of aquatic sulfate reducing bacteria on oil field ground and a depressor used relate to a method for regulating and controlling the activity of sulfate reducing bacteria and a depressor used. The method solves the problems of the prior method for controlling SRB in an oil field including low sterilization efficiency and various disadvantages of bactericide. The depressor for inhibiting the activity of aquatic sulfate reducing bacteria on oil field ground is made from a denitrifying nitrifying bacteria liquid, nutritive element and a co-inhibiting substance in portion by mass. The method for the ecological regulation and control comprises the following steps that: (1) the depressor is prepared; and (2) the depressor is added according to the molar ratio between SO4<2-> and nitrate radical. The depressor has high efficiency in inhibiting sulfate reducing bacteria and avoids using a bactericide, thereby having high safety and environmental protection.

Description

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AI Technical Summary

Benefits of technology

This technology helps prevent harm caused from acid rain or other factors affecting soil quality. By removing nitrogen compounds like ammonium (NH4) salts during production processes, this method can increase the amount of available oxygen needed without adding more chemical agents into contaminated areas. Additionally, it prevents excessive growth of microorganisms called Sulfur Microbial Reducers (SMR), which causes damage when used on crops such as wheat. Overall, these technical improvements improve environmental safety while minimizing negative impact on human health.

Problems solved by technology

This patented technical solution described in this patents relates to controlling SRB during oil field operations without affecting their beneficial effects. Current treatments involve physically removing them from the affected areas through filtrations systems like sand filters, but they also pose environmental concerns. Chemotherapy techniques may help kill certain types of organism called SRB while others work better against these same strains. Physicochemical sterilizers use powerful substances to remove unwanted materials, making it challenging to maintain clean pipelines. Biological agents offer an alternative approach to address issues associated with chemistry sterilizations.