Enhancing demulsification efficiency and corrosion protection in oil industry: a study of novel compositions

Author:

,Gurbanov Guseyn R.,Gasimzade Aysel V.,

Abstract

In countries with developed oil industries, the primary objective is to effectively implement the demulsification of water-oil emulsions and provide corrosion protection for facilities during the preparation of heavy oils with stable emulsions for transportation. Consequently, the development of new multi-functional compositions to enhance the efficiency of the emulsion decomposition process and protect the internal surfaces of transport preparation facilities from corrosion remains a pertinent issue. The article presents the results of laboratory experiments on the demulsification of stable water-oil emulsions from the Muradkhanli field in Azerbaijan, which have a dilution rate of 41% (by mass) and provides satisfactory corrosion protection. For the first time, compositions comprising two new ingredients (Alkan-415+Gossypol resin in a 4:1 ratio (denoted as G-1) and Alkan-415+MARZA-1 in a 7:1 ratio (denoted as G-2)) were prepared under laboratory conditions, and their demulsification and corrosion protection effects in an acidic environment were studied. The demulsification process was conducted at temperatures of 50 and 600C for two hours. During the examination of the demulsification efficiency of the compositions, it was observed that the effectiveness of the reagents increased with higher concentrations. At temperatures of 50 and 600C, the most significant effects were observed at a concentration of 700 g/t for both compositions. At these temperatures, the residual water content due to the effect of the G-1 composition was 0.02% and 0.01%, and for the G-2 composition, it was 0.01% and 0.005%, respectively. Furthermore, the corrosion protection efficiency of both G-1 and G-2 compositions in an acidic environment was investigated. During the experiment, the highest effectiveness was observed at a concentration of 700 g/t for both compositions. At this concentration, the corrosion protection effect of the G-1 composition was 96%, while that of the G-2 composition was 98%. Thus, it was determined that, due to their multifunctionality and significant impact both in the decomposition of stable water-oil emulsions and in acidic environments, the optimal consumption rates of both compositions with new content are 700 g/t.

Publisher

SHEI Ukrainian State University of Chemical Technology

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