مطالعه تجربی اثرات ترکیبات فعال نفت در یک فرآیند تزریق آب مهندسی شده

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی شیمی، نفت و گاز، دانشگاه علم و صنعت، تهران، ایران

2 پردیس توسعه صنایع بالادستی نفت، پژوهشگاه صنعت نفت، تهران، ایران

10.22078/pr.2022.4600.3074

چکیده

بازیافت نفت و ثمر بخشــی پروژه‌های ازدیاد برداشت، از جمله تزریق آب مهندسی شده، تحت تأثیر گروهی از عوامل مانند ترکیبات نفت، ترکیبات آب تزریقی، درصد تخلخل، قابلیت عبوردهی، ترکیب مینرالوژی سنگ، توزیع فضای متخلخل، اندازه منافذ و درصد اشباع آب و نفت است. نحوه عملکرد و سازوکار تزریق آب مهندسی شده به مخزن کربناته همواره با ابهامات فراوانی روبرو بوده است. در این مطالعه با بررسی یکی از عوامل مؤثر نظیر ترکیبات قطبی نفت و اثرات متقابل فیزیکی-شــیمیایی آن در طول فرآیند تولید، این دسته ابهامات بیشتر مورد بررسی و تحلیل قرار گرفته است. وجود اجزای قطبی در نفت خام بر فعل و انفعالات اتفاق افتاده در سه فاز و در نتیجه تغییر ترشوندگی اثر می‌گذارد. در این مطالعه، آزمایش‌های اندازه‌گیری زاویه تماس، کشش بین سطحی و فرآیند آشام خود‌به‌خودی روی نمونه‌هایی از مغزه آهکی انجام شده است. بدین منظور مغزه‌ها با شرایط یکسان، در نفت‌های متفاوت از نظر درصد ترکیبات قطبی اشباع شده است. و در مجاورت ترکیبات مشخصی از یون‌های فعال در آب مهندسی شده قرار گرفته‌اند. در این خصوص با استفاده از نتایج گردآوری شده می‌توان نحوه شرکت در واکنش و میزان اثرگذاری ترکیبات قطبی نفت را تفسیر و بررسی نمود. نتایج حاصل بیانگر این اســت که میزان تولید نفت در اثر تزریق آب و سرعت تغییر ترشوندگی، وابسته به نوع ترکیبات قطبی نفت، اثرات متقابل آنان با آب شور و سطح سنگ و غلظت بهینه این نوع ترکیبات است. بنابراین با شناسایی دقیق عوامل مؤثر بر ثمر بخشی فرآیند تزریق آب مهندسی شده، می‌توان مخازن بالقوه را پیش‌گزینی کرد.
 

کلیدواژه‌ها


عنوان مقاله [English]

Experimental Study of the Effects of Active Petroleum Compounds in Designed Water Flooding

نویسندگان [English]

  • Samaneh Bovard 1
  • Mohammad Taghi Sadeghi 1
  • Ezatollah Kazemzadeh 2
  • Rohaldin Miri 1
1 Experimental Study of the Effects of Active Petroleum Compounds in Designed Water Flooding
2 Center for Exploration and Production Studies and Research, Research Institute of Petroleum Industry, Tehran, Iran
چکیده [English]

Reservoir oil recovery and efficiency of EOR projects include designed water injection influenced by factors such as oil composition, porosity, permeability, rock mineral composition, porous space distribution, and pore size. The injection of designed water into the carbonate reservoir has always faced many ambiguities. This category of ambiguities has been further investigated and analyzed in this study by examining one of the influential factors, such as polar compounds of oil and its Physico-chemical interactions during the production process. Polar components in crude oil affect the electrostatic interactions at the mineral surfaces, affecting the wettability conditions. This study performed experiments measuring contact angle and spontaneous vascular process on limestone samples. For this purpose, cores with the same conditions are saturated in different oils regarding the percentage of polar compounds. Moreover, they are adjacent to specific components of active ions in designed water. In this regard, using the collected results, we can interpret and study how to participate in the reaction and the effectiveness of polar compounds in the oil. The results show that the amount of oil production due to water injection depends on the chemical composition of the oil and the interaction between water and oil, and in addition to the amount of asphaltene in the oil, it is also affected by the amount of organic carboxylic acids in crude oil.
 

کلیدواژه‌ها [English]

  • Smart Water
  • EOR
  • Petroleum acidic compounds
  • Petroleum asphaltene
  • Ionic compounds
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