Predictive assessment for the potential pollution of underground hydrosphere due to extraction of unconventional hydrocarbons (using remote sensing data)

• Дата: 2017
• Автори: Lyalko, Vadim, Azimov, Oleksandr, Yakovlev, Yevgen
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: Scientific Centre for Aerospace Research of the Earth Institute of Geological Science National Academy of Sciences of Ukraine, Kyiv, Ukraine 2017
• Теми: unconventional hydrocarbons; shale gas; fracturing zones; upgoing migration; underground waters; technological pollutions; remote sensing data; нетрадиционные углеводороды; сланцевый газ; фрекингзоны; восходящая миграция; подземные воды; технологические загрязнения; материалы дистанционного зондирования Земли; нетрадиційні вуглеводні; сланцевий газ; фрекінгзони; висхідна міграція; підземні води; технологічні забруднення; матеріали дистанційного зондування Землі
• Онлайн доступ: https://ujrs.org.ua/ujrs/article/view/107
• Назва журналу: Ukrainian Journal of Remote Sensing of the Earth

The article considers the relevance of the application of modern remote aerospace and hydrogeological methods in the problems of the ecological safety for the hydrosphere in Ukraine during unconventional hydrocarbons extraction, especially shale gas is considered. Case studies of pilot implementation of these methods are present for the Bilyaivska area adjacent to the Yuzivka licensed site within the Dnieper-Donets Depression as the biggest artesian basin within Ukraine. A number of the hydrogeological filtration parameters of multilayers' system (water aquifers, aquitard and aquiclude regional layers) enable to obtain the rough estimate of the temporal indices for the areal upward pollutant migration from the fracturing zone to the groundwater aquifers in the potential process of shale gas production (as an example the 400-Bilyaivska well). It is found that the possible variety of the rock double permeability in the complete rock continuum is responsible for the passage time of diffusive convective pollutant migration from the fracturing zone to the groundwater aquifers, and this time interval consists of 170 ÷70 years. Considering the balance ratio between the water volume for the dilution of pollutants to the safe concentrations and the volume of porous solutions, which is over the fracturing zone the conclusion is drawn that remains of technological solutions in the fracturing zone in some cases can continuously contaminate the underground water within the zones of slow and active water exchange.