Demulsifiers for Simulated Basrah Crude Oil

Abstract

Water in oil emulsion occurs at many stages in the production and treatment of crude oil. In the present work three demulsifiers were used (RP6000, Chimec2439 and PAA) for dehydration (desalting) of Al-Basrah water in oil emulsion. The experimental work was performed under constant temperature 65oC and water content 30%vol. (3%wt.NaCl). The parameters studied: demulsifier dose (10, 20, 30, 40,50,60,70 and 80) ppm, separation time (5, 10, 15, 30, 60, 90 and 120) min and types of demulsifiers (RP6000 Chimec2439 and PAA). The dehydration efficiency with prepared demulsifier (PAA) was (75%). Two types of commercial demulifiers were also used (RP6000 and Chimec2439), which gave water separation efficiency (87.5% and 72.2%), respectively. pH, Salt content, remains of water content and density were estimated. The least density of the desalted crude obtained was (0.874 gm/cm3) at (80) ppm of RP6000.