CHEMICAL COMPOSITION AND PHYSICO-CHEMICAL PROPERTIES OF MINERALIZED FORMATION WATERS FROM OIL AND GAS WELLS

Annotatsiya

This study investigates the chemical and physico-chemical properties of formation waters from several oil and gas fields in Uzbekistan, including Aral-4, Seul, Balkan, Berdakh, and Surgil. The research highlights the high concentrations of sodium and calcium ions, confirming that the studied waters belong to the hard water category. The composition of anions such as chloride (Cl⁻), sulfate (SO₄²⁻), carbonate (CO₃²⁻), and bicarbonate (HCO₃⁻) was also analyzed. Electrochemical and ion-plasma methods were applied to alter the characteristics of mineralized formation waters, leading to changes in parameters such as rN (oxidation-reduction potential), density, viscosity, and ion composition. Experiments demonstrated that water could be converted into an acidic active solution without the addition of external chemicals, depending on applied voltage and electrode properties.