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Injection wells microbiologically influenced corrosion and protection


Microbial destruction of chemical agents. From the chemical composition point of view, the more commonly used fungicides are divided into PCP and its derivatives, quaternary ammonium, alkyl diamines salt, chlorine, isothiazolone class. One of the most commonly used class of quaternary ammonium salt and fat. Currently use two or more foreign or more fungicide compound used, greatly increased the bactericidal effect, make it aerobic bacteria and SRB will achieve excellent control. Also in connection with the use of the chemical fungicide is a corrosion inhibitor (mainly defoamers, oxygen scavenger) anti-fouling agent and anti-sticking mud agents, surfactants (especially dispersing agent), etc. In short, the sterilization process in addition to addressing the good fungicides problem, but also on the solvent stabilizer, solubilizer, anti-sticking mud, corrosion inhibitors suitable choice; to address solubility, the role of slime stripping with penetration, bactericidal effect; good stability; efficient multi- efficiency and other issues. 2, oxygen treatment and oxygen scavenger water reservoir of bacteria in many cases due to blockage caused by corrosion, and corrosion of the greatest impact is the role of dissolved oxygen, so in the sterilization process to control the water of oxygen. Once removed the oxygen in the water, the corrosion rate will be reduced. Aerobic bacteria to eliminate the breeding places of the conditions and methods of oxygen is the most commonly used chemical oxygen method, especially for the water level of the closed system is better. Third,abercrombie marseille, micro-injection method using anti-corrosion plugging our known common cause corrosion in the formation of bacteria sulfate-reducing bacteria (SRB), which is a typical anaerobic bacteria in the presence of a sulfate. You can restore it and generate H. s gas, and finally the formation of FeS precipitate formation. Pipeline and cause blockage formation. Early ZobelI have used it for EOR, these side effects. The impact of this work. But it tells people this is a problem. Are being studied to try to resolve it. The use of chemical fungicides can be attained, but a lot of use of the high cost of polluting. Not the best way. Thus it has developed a new method is to use other bacteria to remove or suppress the production of SRB. This approach has received the application. And works well. The bacteria used in the living habits are very similar with the SRB, but they do not produce Hs, when injected into the formation and SRB bacteria live in the same environment, SRB can compete with the living space and food sources, thus inhibiting the SRB's growth and reproduction. Another mechanism is that some bacteria can produce substances like antibiotics, can kill the SRB,abercrombie pas cher, and this material for their own and other harmful bacteria. Scale oil extraction system and pipeline blockage can cause shaft will cause decline, and equipment damage, fouling is mainly due to caCOa, FeCO, BaSO. , FeSC,; and other insoluble substances caused by precipitation. Conventional approach is very difficult, the use of special convergence biological treatment into the water on a regular basis or production well bore, reduce scaling, protective equipment, increase production. The principle is that certain microorganisms can produce some special metabolites. They can prevent inorganic precipitation in the form of units equivalent chelating agent. Fourteen, the source of the bacteria l, formation water in the drilling, completion,abercrombie france, downhole, and a large number of secondary recovery water injection process into the formation of a small number of bacteria to survive, these bacteria have adapted to the underground environment, which may exist help EOR bacteria, the bacteria on the formation water separation, screening, detection, identification, training, and then injected into the formation, these bacteria survive to return to their original growth environment can multiply quickly, play the desired role of 2, bottom silt seabed environment and the formation environment is very similar, particularly the mouth of the sea water, where temperature, pressure, oxygen. While water has some degree of mineralization, where isolated from bacteria, easy to adapt to the ground environment, the success is greater. U.S. submarine mud from the strains isolated from ideal, has been widely used. Fifth, bacterial nutrients bacteria need nutrients to be absorbed in solution was used. As bacterial nutrients, including inorganic and organic compounds, injected into the formation, certain strata of the original material can not react or form a precipitate, or nutrients,franklin marshall soldes, bacteria not only can not be used, and some sediment will plug the formation. So, after finding an ideal bacteria, but also to find the best nutrition formula. This requires from the formation conditions, nutrition, ingredients and costs in three areas to consider the current application is usually a mixture of a variety of bacterial systems, a variety of bacteria in the formation of bacteria in the formation of a healthy ecosystem, in this environment, all kinds of bacteria on their own its responsibility, directly or indirectly, or acting on the oil formation to enhance oil production and the formation of recovery. Data from the poor Marina (SPE23955 More articles related to topics：


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