Development of a new composition for the prevention of asphaltene-paraffin-resin deposits

This article focuses on the use of chemical methods against asphaltene-resin-paraffin (ARP) deposits. The article mentions the «NQ-AP-1» regent, which consists of a demulsifier, methyl alcohol and alkaline waste, against the formation of ARP deposits. Based on laboratory studies, the optimal mass percentage of components in the composition was determined. In addition to the demulsifier, the composition to be used against ARP sediments contains methyl alcohol and the optimal amount of components of alkaline waste obtained from the treatment of diesel fuel, demulsifier – 0.8%; methanol – 5.2%; alkaline waste – 94%. The effect of the prepared «NQ‑AP‑1» reagent on the rheological properties of ARP oils was studied, and as a result of the reagent's effect, the oil changed its rheological properties and showed the properties of Newtonian oils. The optimal consumption rate of the reagent was determined by the «cold fingers» method. Here, the amount of paraffin collected on «cold fingers» was compared to crude oil and oil with 600, 800 and 1000 g of reagent added to 1 t. While the amount of ARP collected on «cold fingers» in unreacted oil was maximum (10.41 g), when 800 g/t of reagent was added to the system, this indicator was 7 g. The research results show that the reagent «NQ-AP-1» can be used as an effective method against ARP deposits, the use of the composition allows to achieve high economic efficiency. The composition provides a fairly high efficiency against ARP deposits, it is designed to prevent ARP deposits during oil extraction and transportation. Keywords: asphaltene-resinparaffin deposits; chemical treatment; inhibitor; demulsifier; well bottomhole zone.