«Environmental protection in oil and gas complex»

Assessment of corrosion inhibitors efficiency at gas production and processing facilities

UDC: 628.5:504.054
DOI: -

Authors:

¹ Gazprom VNIIGAZ, Moscow region, Russia

Keywords: gas field, waste water, inhibitory protection, influence on the human body, emulsion formation, methods of emulsion destruction, film-forming properties of inhibitors

Annotation:

The authors of the article present a comprehensive approach to the study of corrosion inhibitor properties and requirements for them at gas fields. It is noted that inhibitory reagents should be harmless to human health, have a high protective potential against internal corrosion and produce no negative impact on technological processes during the preparation and processing of gas and gas condensate. On the one hand, corrosion inhibitors ensure the reliable operation of equipment and gas pipelines, preventing possible emergency emissions of hydrocarbons into the air, water and soil and the associated environmental consequences. On the other hand, insufficient separation of the hydrocarbon phase from the aqueous medium at elevated concentrations of inhibitors, leading to emulsion formation, can cause problems when purifying wastewaters before injecting them into the reservoir thus and contaminating groundwater by hydrocarbons. The conditions for emulsions formation during hydrocarbon processing at gas fields are considered. The efficiency of thermal and chemical emulsion destruction methods is studied. The protective properties of corrosion inhibitors films are assessed using the polarization resistance method.

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