«Equipment and technologies for oil and gas complex»

Problems of Yamal's oil and gas facilities in the areas of geodynamic risks

UDC: 622.276+624.131.4
DOI: -

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russia
² Altumgeo, Moscow, Russia

Keywords: gas pipelines, gas emissions, bulgunniakhs, diagnostic examination, radio wave monitoring, industrial safety, risks, predictive monitoring

Annotation:

In recent years, large funnels (gas discharge funnels, or gas emission funnels) have appeared in the upper part of the geological section in the northern part of the Western Siberia. The main hypothesis of their genesis, which is supported by many researchers, is related to the formation of gas cavities and the subsequent release of methane from them due to the degradation of permafrost layers – the pressure in the gas cavities gradually increases, which leads to crater formation. The aerospace survey has revealed some similar potentially dangerous areas passing near gas pipelines however, it is likely that many undetected ones exist. At the same time, as is known, aerospace photography is capable of monitoring only the visible surface soil layer. To predict potentially dangerous processes in the hidden stages of their development in order to ensure uninterrupted gas supplies, methods are needed that make it possible to find methane-filled cavities in the upper part of the geological section in advance. This is the radio wave method in two versions: high-frequency (0,5…10,0 MHz) and low-frequency (1,0…100,0 kHz). The radio wave method has a long-term positive practice of being used for such problems solution and its application will allow avoiding the development of potentially dangerous emergency situations on main gas pipelines.

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