Study on efficiency of new multifunctional compositions for preparation of oil for transportation

Abstract

We studied the effect of individual reagents and new compositions on demulsification of stable water-oil emulsions produced from the wells of Muradkhanli and Balakhani fields, SOCAR. The corrosion protection effect of three new compositions designated as A, B and C in water-oil emulsion, as well as the effect of surface tension on freezing temperature are discussed in the article. Composition A contained the reagents ND-12 and Alkan, composition B contained reagents ND-12 and Gossypol resin, and composition C contained the reagents BAF, ND-12, Gossypol resin and Dissolvan-4411. Physical and chemical properties of the oil samples taken for the research were studied by known methods. The results of the obtained laboratory experiments gave reason to say that mainly one composition, B, has the highest demulsifying effect. In addition to the demulsifying effect of compositions A, B and C, the corrosion protection effect was also studied under laboratory conditions. In this regard, water-oil emulsion was used as an aggressive corrosion medium. The rate of corrosion was determined by gravimetric method in both reagent-free and reagent-containing mediums, and the corrosion protection effect of the compositions was calculated. Thus, the protection effect of composition B was 98.1% in Muradkhanli oil sample, and 97.8% in Balakhani oil sample. Moreover, the effect of all three newly prepared compositions on the surface tension and freezing temperature of the studied Muradkhanli and Balakhani oil samples were investigated. It was established that the composition C has the highest effect on the reduction of surface tension and freezing temperature of oil samples.