The influence of technogenesis on the change of the chemical composition of fresh groundwater in the conditions of a long-term development of the central part of the Samotlor oil field
UDC: 556.3.04
DOI: 10.33285/2413-5011-2023-3(375)-53-59
Authors:
VASHURINA MARGARITA V.
1,
KHRAMTSOVA ANNA L.1,2,
RUSAKOVA YULIA O.1,2,
VASILIEV YURIY V.2
1 West Siberian Institute of Oil and Gas Geology of Tyumen Industrial University, Tyumen, Russia
2 West Siberian branch of Trofimuk Institute of Petroleum Geology and Geophysics of Siberian branch Russian Academy of Sciences
Keywords: Samotlor oil field, monitoring, fresh groundwater, dry residue, indicator, geodynamic fluctuations, trough, technogenesis
Annotation:
Based on the analysis of the results of a 16-year monitoring cycle on the territory of the Samotlor oil field, the change of the groundwater chemical composition in the Oligocene deposits was noted. The areas of the dry residue increase of ground waters in the central part of the territory and their decrease in the southeastern part are territorially close to the zones of maximum amplitudes of the earth’s surface oscillations, recorded at the points of the geodynamic polygon of geodetic and gravimetric observations, which suggests the relationship between geodynamic and hydrochemical parameters. It is concluded that the influence of geodynamic displacements of the earth’s surface can lead to casing strings deformation in deep production wells and the cross-flow of highly mineralized waters of deep horizons into fresh water horizons. The results of the work have an environmental focus and also indicate a high degree of anthropogenic impact associated with intensive subsoil use.
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