Groundwater Monitoring at the Facilities of Oil and Gas Complex

The environmental aspects of the development of oil and gas deposits are considered. The methodological principles of the formation of a hydrogeological monitoring system in the general structure of comprehensive geoenvironmental monitoring of oil-and-gas facilities are discussed. The structure of comprehensive geoenvironmental monitoring and subsurface-hydrosphere monitoring is presented. It consists of observation, estimate, and forecast subsystems. Requirements are formulated to the source data that forms the basis, on which the observational network is designed; the state of the subsurface hydrosphere is assessed both at the stages of designing the facilities being examined and their monitoring system and during the process of operation of the facilities and systems of monitoring. Changes in the environment and subsurface hydrosphere as its component are predicted.