«Environmental protection in oil and gas complex»

Biocorrosion as the main factor of the cement stone destruction of abandoned and suspended oil and gas wells

UDC: 606+579.6
DOI: -

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russia
² Research Institute "Center for Environmental Industrial Policy", Moscow, Russia

Keywords: abandoned and suspended oil and gas wells, cement stone, biocorrosion, microorganisms, fungi, mechanism, mathematical model

Annotation:

The authors of the article consider the negative aftereffects for the environment that arise when the tightness of abandoned and suspended oil and gas wells is broken. One of the main causes of cement stone destruction is biocorrosion. The authors of the article identify the main types of microorganisms involved in the process of cement stone biocorrosion and provide a mechanism of bacterial and mycological biocorrosion. The main natural factors that determine the biochemical activity of the isolated microorganism populations and, consequently, the rate of biocorrosion are also assessed. A mathematical model is proposed that characterizes the degree of destruction of cement stone in abandoned and suspended wells, in which one of the variable criteria is the number of soil microorganisms and their biochemical activity.

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