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oa Hydrochemical Prerequisites for the Search for Lithium in Produced Water of Oil and Gas Fields in Ukraine
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 18th International Conference Monitoring of Geological Processes and Ecological Condition of the Environment, Apr 2025, Volume 2025, p.1 - 5
Abstract
In the article, the authors consider the possibility of using data on the geochemical characteristics of lithium, rubidium and cesium in groundwater to identify promising oil and gas deposits for the purpose of further extraction of lithium from OGPW. The article identifies three geochemical types of groundwater to which elevated contents of lithium, rubidium and cesium are confined. The promising search zones are considered in the context of the hydrogeological zoning of Ukraine and oil and gas regions. The Eastern oil and gas region will correspond to the Dnieper-Donetsk WS. The waters of this structure will fit the first geochemical type. In the brines of the Dnieper-Donetsk WS, lithium concentrations of up to 55 mg/dm3, rubidium up to 8.4 mg/dm3, and cesium up to 1.4 mg/dm3 were recorded. Highly mineralized brines of calcium chloride composition will be promising. The article also considers the western oil and gas region, which corresponds to the Transcarpathian and Precarpathian WS. The authors attribute this region to the second and third geochemical types of groundwater. The promising OGPW brines of this region will be highly mineralized waters of sodium-calcium chloride and calcium chloride composition, as well as carbonic thermal waters.