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

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.