Investigation of the permafrost zone by geophysical techniques and determination of primary categorisations of permafrost conditions in rocks

The investigation of the permafrost zone situated in the Yamal Peninsula pertains to gasand hydrate-saturated intervals. The avoidance of gas discharge frequently met during well drilling is of utmost importance. The allocation of permafrost rocks governs the quest for novel approaches to analyze the geocryological situation of the locale, together with ascertaining the principal regularities of the zone structure, ascertained via geological and geophysical investigations, analysis of well drilling data, and seismic assessments.The investigation of the permafrost zone plays a crucial role in well drilling to prevent various types of complications. Moreover, the interpretation of geophysical survey data in combination with drilling and seismic data allows us to construct a model of the zone's lateral spread.Carrying out geophysical methods helps to prevent, to some extent, and also prevent possible emergency situations. A fairly large fund of geophysical material has been reviewed, and a complex of studies in the permafrost zone of the Yamal Peninsula in many fields has been analyzed.Following these studies, this article presents the primary geophysical survey material interpretation techniques with highlighted criteria for identifying different permafrost conditions in rocks.