Study of filtration environment state of the eocene-quaternary hydro-geological complex of the Western-Siberian mega-basin
The analysis of hydro-geological parameters, which were defined while interpreting test data received during reappraisal works and reinterpretation of the data, received in the process of earlier-completed geological-prospecting works in the fields of fresh ground waters of the Western Siberia, served the basis for proving the fact that filtration environment changed during the time of fields’ operation. Constant and long-term field exploration forms favorable situation for increasing cross-flows through the formed channels from the upper part of the section to the productive reservoir (the state of sediments, blocking the water-bearing bed, varies in time) in filtration environment. The conclusion in brief says that water volume, appraised during prospecting works with no account of filtration environment change, is reduced. On the other hand, perfection of filtration environment conditions worsens underground waters’ protection level (increase of vulnerability) from technogenic impact. Revealing of filtration environment changes (increase of vulnerability level of underground waters) will allow taking the necessary measures to prevent negative changes of underground waters quality and their pollution.