Ecological-geophysical monitoring and hydrogeochemistry of the underground water of oil fields

Possibilities of the vertical electric sounding - one of mobile geophysical methods for quantitative determination of the salinity of the subsurface water of the main aquifers, situated on the territory of oil fields of the south-east of the Republic of Tatarstan - are analyzed in the article. The proposed methodology allows to construct detailed maps of the salinity of aquifers of the areas and to determine the protection rate of the groundwater from pollution.
Materials and methods
The method of vertical electrical sounding.
Results
Trends of the salinity of aquifers in the area were revealed. It turned out that two salinity anomalies are local. Interseasonal changes of the salinity are most likely related to the regime of subsurface water supply, but not to the changes of salinity sources. The sources themselves are in all cases located in groundwater feeding zones and are, probably, associated with oilfield facilities.
Сonclusions
The proposed methodology of geophysical monitoring makes it possible to construct detailed maps of the groundwater salinity.