Study of the Effect of a New Multifunctional Composition on Oil Water-Cutting Factor, Corrosion and Paraffin Deposition

In this study, formation water sample №1082 from the Narimanov OGPD, together with crude oil samples from the Bulla-Deniz and Muradkhanli fields, were examined under laboratory conditions to evaluate the efficiency of chemical reagents. The Alkan-318 demulsifier, Marza-1 inhibitor, Difron-4201 depressor additive, and the combined ADM composition (Alkan-318 + Difron-4201 + Marza-1 in a 1:1:1 ratio) were tested for their effects on water separation, corrosion inhibition, sulfate-reducing bacteria activity, paraffin deposition, and pour point depression. Comparative experiments showed that the ADM composition demonstrated superior performance over individual reagents at equal concentrations. At an optimal dosage of 600 g/t, Alkan-318 and the ADM composition reduced residual water in Bulla-Deniz (75% water cut) and Muradkhanli (41% water cut) oils to 0.1% and 0.8%, respectively. For pour point depression, Difron-4201 (900 g/t) and ADM (600 g/t) achieved efficiencies of 169.2% and 176.9% in Bulla-Deniz oil, and 151.4% and 170.0% in Muradkhanli oil. Regarding deposit prevention, ADM reached 95.4% and 96.9% efficiency, significantly exceeding individual reagents. Corrosion tests revealed that Marza-1 and ADM provided up to 99.9% protection in aggressive H₂S and CO₂ environments, while ADM also exhibited a nearly complete bactericidal effect (99.8%) against sulfate-reducing bacteria, highlighting its multifunctional efficiency.