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Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454
ISSN 2500-3399
ПИ №ФС77-57454
MONITORING OF CHLORIDE IONS AND SULFATE IONS IN THE FORMATION WATER OIL FIELDS OF THE NORTH-WEST CASPIAN
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This article produced water oil fields are considered as man-made source of salts in the soil cover, in particular chlorides and sulfates. The article describes the characteristics of the territory of the Republic of Kalmykia in terms of tectonics and lithology. Throughout 2009-2012, the research was conducted determination of chloride ions and sulfate ions in the formation waters of oil fields using methods titrimetry and gravimetry. The article also presents physicochemical parameters of formation water, such as density and pH. From the values of the pH of all the investigated samples of reservoir water oil fields are related to the class of low. Density uniformity is observed, there is a variation from 1.0701 to 1.993 g/cm3. All produced water studied oil fields contain an amount of chloride ions in excess of the MPC in 5-9 times. Over the entire study period, the amount of sulfate ions in the formation waters of oil fields decline. A study for the year 2012 show that the formation water Kalinin and burial deposits of sulphate ions are absent. Since in all studied oil fields dominated by chloride ions, then a spill of produced water has a place of chloride salinity.