Research institute of Petroleum Industry (RIPI) Journal of Petroleum Research 2345-2900 27 96-5 2017 11 22 Experimental Investigation of Dodecylbenzene Sulfonic Acid and Toluene Dispersants on Asphaltene Precipitation of Dead and Live Oil Experimental Investigation of Dodecylbenzene Sulfonic Acid and Toluene Dispersants on Asphaltene Precipitation of Dead and Live Oil 113 126 820 10.22078/pr.2017.2132.2003 FA Ehsan Zahedi Yami Faculty of Chemical Engineering, Tarbiat Modares Univercity, Tehran, Iran Mohsen Vafaie-Sefti Faculty of Chemical Engineering, Tarbiat Modares Univercity, Tehran, Iran Mohammadmahdi Shadman Faculty of Chemical Engineering, Tarbiat Modares Univercity, Tehran, Iran 0009-0001-7658-7771 Hasan Naderi Fluid Reservoir Section, Petroleum Engineering Department, Research Institute of Petroleum Industry, (RIPI), Tehran, Iran Journal Article 2016 07 17 One of the most promising methods in order to mitigate asphaltene precipitation is to use asphaltene dispersants. In this study, the effect of two dispersants of toluene and dodecylbenzene sulfonic acid on asphaltene precipitation of a dead and a live oil sample has been investigated. Investigations on dead oil were conducted using IP143 standard test and for studying live oil in the presence of asphaltene dispersants high pressure microscopy was used. The obtained pictures from high pressure microscopy were analyzed using a picture analysis software. According to the results, this dispersants in dead oil create an optimum point for asphaltene precipitation. In live oil, this dispersants reduce asphaltene precipitation; moreover, for dodecylbenzene sulfonic acid, the reduction in asphaltene precipitation reaches down to 70 percent. Also, it was observed that in the effect of injection of these dispersants, the average size of asphaltene flocculation has reduced, which this reduction was much more for dodecylbenzene sulfonic acid in comparison with toluene.   One of the most promising methods in order to mitigate asphaltene precipitation is to use asphaltene dispersants. In this study, the effect of two dispersants of toluene and dodecylbenzene sulfonic acid on asphaltene precipitation of a dead and a live oil sample has been investigated. Investigations on dead oil were conducted using IP143 standard test and for studying live oil in the presence of asphaltene dispersants high pressure microscopy was used. The obtained pictures from high pressure microscopy were analyzed using a picture analysis software. According to the results, this dispersants in dead oil create an optimum point for asphaltene precipitation. In live oil, this dispersants reduce asphaltene precipitation; moreover, for dodecylbenzene sulfonic acid, the reduction in asphaltene precipitation reaches down to 70 percent. Also, it was observed that in the effect of injection of these dispersants, the average size of asphaltene flocculation has reduced, which this reduction was much more for dodecylbenzene sulfonic acid in comparison with toluene.   https://pr.ripi.ir/article_820_e2a2dcc36a08a345332c751b2f2e476c.pdf