بررسی اثر پراکنده‌کننده‌های دودسیل بنزن سولفونیک اسید و تولوئن بر روی میزان رسوب‌گذاری آسفالتین در نفت مرده و زنده

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی شیمی، دانشگاه تربیت مدرس، تهران، ایران

2 بخش سیال مخزن، پژوهشکده‌ مهندسی نفت، پژوهشگاه صنعت نفت، تهران، ایران

چکیده

یکی از راه‌های مؤثر برای کاهش رسوب‌گذاری آسفالتین استفاده از پراکنده‌کننده‌ها در نفت است. در این مطالعه تأثیر دو پراکنده‌کننده‌ تولوئن و دودسیل بنزن سولفونیک اسید بر روی رسوب‌گذاری نمونه‌های نفت مرده و زنده بررسی شد. در بررسی‌های انجام‌شده بر روی نفت مرده از آزمون استاندارد 143IP استفاده شد و برای مطالعه نفت زنده نیز بررسی میکروسکوپی فشار بالا به کار گرفته شد. مطابق نتایج به‌دست‌آمده، در نفت مرده افزودن این حلال‌ها نقطه حداقلی برای رسوب آسفالتین پدید می‌آورد. در نفت زنده نیز استفاده از این پراکنده‌کننده‌ها منجر به کاهش میزان رسوب‌گذاری آسفالتین می‌شود که برای پراکنده‌کننده‌ دودسیل بنزن سولفونیک اسید این میزان به بیش از 70% می‌رسد. به‌علاوه مشاهده شد که در اثر تزریق پراکنده‌کننده‌ها، اندازه متوسط رسوبات آسفالتین کاهش می‌یافت که این کاهش برای دودسیل بنزن سولفونیک اسید بیشتر بود.
 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Experimental Investigation of Dodecylbenzene Sulfonic Acid and Toluene Dispersants on Asphaltene Precipitation of Dead and Live Oil

نویسندگان [English]

  • Ehsan Zahedi Yami 1
  • Mohsen Vafaie-Sefti 1
  • Mohammadmahdi Shadman 1
  • Hasan Naderi 2
1 Faculty of Chemical Engineering, Tarbiat Modares Univercity, Tehran, Iran
2 Fluid Reservoir Section, Petroleum Engineering Department, Research Institute of Petroleum Industry, (RIPI), Tehran, Iran
چکیده [English]

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.
 

کلیدواژه‌ها [English]

  • Precipitation Onset
  • Solvent Injection
  • Asphaltene Precipitation
  • Dispersant
  • Dodecylbenzene Sulfonic Acid
  • Toluene

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