METHOD FOR FIGHTING CORROSION CAUSED BY SULFATE-RESTORING BACTERIA Russian patent published in 2007 - IPC E21B43/22 C12N1/36 

Abstract RU 2291288 C1

FIELD: oil industry, possible use for suppressing growth of sulfate-restoring bacteria and inhibiting corrosion in systems for collecting and processing oil.

SUBSTANCE: method for fighting corrosion caused by sulfate-restoring bacteria including forcing a volume of bactericide solution into inter-tubular space of oil well, at outlet of which pipe corrosion has been detected caused by sulfate-restoring bacteria, forcing of bactericide solution is performed into inter-tubular space of working oil well under pressure of 0,5-2,5 MPa with flow of 5-6 liters per second, while volume of bactericide solution is computed on basis of actual debit of liquid of oil well from formula V=A·C·D, where V - bactericide solution volume being forced in, m3, A - value, received from concentration calculation, kg/m3, of bactericide solution being used, m3/kg, C - suppressing concentration for adhesion forms of sulfate-restoring bacteria, kg/m3, D - actual well debit for 1 day, m3.

EFFECT: simplification of method due to execution of operations in working well.

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RU 2 291 288 C1

Authors

Ibragimov Nail' Gabdulbarievich

Taziev Mirgazijan Zakievich

Zaljatov Mars Shajkhrazyevich

Zakirov Ajrat Fikusovich

Gareev Ravil' Mansurovich

Ozheredov Evgenij Vital'Evich

Galimov Ravil' Minnegareevich

Dates

2007-01-10Published

2006-03-22Filed