Social and economic consequences of extreme situations and failures are considered at oil and gas workings on the shelf. The analysis of world experience of sea (shelf) oil and gas workings out with an estimation of quantity of emergencies and the come damage on platforms, constructions for extraction and storage of petrohydrocarbons is made, chinks, pipelines, etc. Methodical approaches to an economic estimation of consequences of emergencies and expected profit oil and gas workings a taking into account risk of extreme situations and failures are offered.
The concept of basic researches of geodynamic safety oil and gas objects, consisting that the oil and gas object with the geological environment containing it is considered as the difficult open prirodno-technical system which geomechanical evolution is carried out by cyclic alternation of stages of linear and nonlinear deformation, with probability of spasmodic transition or bifurcation is developed. Methodical approaches to the analysis and an estimation of geodynamic risks are offered. The system structure of geodynamic monitoring of extraction, storage and pipeline transportation of the hydrocarbonic raw materials is developed for the western sector of the Russian Arctic, considering tectonofizical features of region and including complexes of natural measurements, modelling and expert estimations.