Study of wastes from oil production and field treatment

UDK: 665.61.033-404.8

DOI: 10.24887/0028-2448-2026-5-122-125

Key words: stable emulsions, oil treatment facility, waste from oil field treatment, dynamic viscosity, hydrophobic properties

Authors: R.Sh. Ziatdinova (TatNIPIneft, RF, Almetyevsk); A.N. Beregovoi (TatNIPIneft, RF, Almetyevsk); N.A. Knyazeva (TatNIPIneft, RF, Almetyevsk); A.D. Kurbanov (TATNEFT PJSC, RF, Almetyevsk); A.A. Lutfullin (TATNEFT PJSC, RF, Almetyevsk)

All technological processes: production, gathering, and treatment of oil, gas, and water necessitate evaluation of the properties of water-oil emulsions that enter oil treatment facilities. As water cut increases and chemical oil production stimulation methods are applied, produced fluids exhibit higher content of stabilizers and solids in water-oil emulsions. This results in formation of highly stable emulsions (intermediate rag layers) characterized by higher resistance to breakdown which hinders oil and water treatment processes. Stabilization of oil treatment operations demands their removal from process facilities to a separate unit or tank for further treatment. Separation of oil field treatment wastes (rag layers) in oil and water requires increased dosages of demulsifiers and special chemicals, higher heating temperatures, addition of other chemical agents as required, and longer settling times. High initial viscosity, multi-component composition of oil field treatment wastes and their property variations are the factors that impede transportation and preparation processes. Opportunities for beneficial applications of such wastes are currently explored. For this purpose, laboratory studies of physical and chemical parameters and rheological properties of oil field treatment wastes from three different sites were conducted. Hydrophobic properties of oil field treatment wastes from these sites were also tested. Based on the results, all three waste samples exhibit good hydrophobic properties.

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