August 15, 2025Open Access

Selection of a Demulsifier for the Separation of Oil and Water Emulsion in the Field

RGR. GilvanovUniversity of Science and Technology GKG. KozlovaUniversity of Science and Technology SOS. OninaUniversity of Science and Technology

Key Points

DE-1 demulsifier significantly reduces oil-water emulsion separation time compared to DE-2 and DE-3.
Testing showed concentration variations of 10 g/t, 20 g/t, and 30 g/t with DE-1 yielding the best results initially.
A comparative analysis was performed in high saline oil conditions to evaluate the effectiveness of all three demulsifiers.
These findings support the use of DE-1 in environments with high salt content, enhancing oil recovery processes.

Abstract

The article presents the results of a study of the effectiveness of various demulsifiers (DE) for separating oil and water emulsions in the field. A comparative analysis of the effectiveness of three types of demulsifiers (DE-1, DE-2, DE-3) in conditions of high salt content in oil was carried out. According to the results of the study, the DE–1 demulsifier is significantly more effective than the base, as well as more effective than the DE–2 and DE –3 demulsifiers. The tests were carried out at concentrations of 10 g/t, 20 g/t and 30 g/t demulsifiers.

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