مرور جامع تزریق آب هوشمند در مخازن نفتی با نگاه ویژه به مخازن کربناته جنوب غربی ایران

نوع مقاله : مقاله پژوهشی

نویسندگان

شرکت ملی مناطق نفت خیز جنوب، اهواز، ایران

چکیده

در طول سال‌های اخیر، فعالیت‌های تحقیقاتی در خصوص تزریق آب هوشمند در میادین نفتی افزایش یافته است. تزریق آب هوشمند با بهینه نمودن ترکیب یونی و میزان شوری آب تزریقی یک روش امید بخش برای افزایش ضریب بازیافت نفت است. مطالعات انجام شده طی دو دهه اخیر نشان داده است که تزریق آب هوشمند نسبت به آب دریا می تواند منجر به افزایش ضریب بازیافت نفت گردد. تاکنون سازوکارهای متعددی به منظور توصیف عملکرد تزریق آب هوشمند در ازدیاد برداشت نفت ارائه شده است. با این حال به دلیل واکنش‌های پیچیده شیمیایی و فیزیکی، سهم هر کدام از سازوکار‌ها در افزایش ضریب بازیافت نفت مشخص نشده است و به همین خاطر پیش بینی عملکرد مخازن تحت تزریق آب هوشمند دشوار است. در این مقاله تزریق آب هوشمند در مخازن کربناته و ماسه‌ای بطور جامع مورد بررسی قرار گرفته است. این مطالعه شامل مرور سازوکارهای مؤثر، سوابق فعالیت‌های آزمایشگاهی و میدانی و چالش‌های مربوطه در سنگ‌های کربناته و ماسه‌ای می‌باشد. در انتها معیارهای غربالگری مخازن کاندید تزریق آب هوشمند ارائه و بر اساس آن تزریق آب هوشمند در مخازن کربناته بنگستانی جنوب غربی ایران امکانسنجی شده است.
 

کلیدواژه‌ها


عنوان مقاله [English]

A Comprehensive Review of Smart Water Injection in Carbonate and Sandstone Reservoirs with a Special Focus at Carbonate Reservoirs in South of Iran

نویسندگان [English]

  • Pouyan Bazvand
  • Kamyar Ahmadpour
  • Mohammad Reza Niknam
  • Behnam Nosrat Panah
  • Amin Daryasafar
National Iranian South Oil Company, (NISOC), Ahvaz, Iran
چکیده [English]

 
In recent years, research activities on smart water flooding in oil industry have been increased significantly. Smart water injection, by optimizing the ionic composition and salinity of the injected water, is a promising technique to increase oil recovery. Studies over the past two decades have shown the benefits of smart water flooding over other oil recovery methods. So far, several mechanisms have been proposed to describe the performance of smart water process in literature. However, due to the complex chemical and physical reactions, the contribution of each mechanism in increasing oil recovery factor has not been determined; therefore, it is difficult to predict the performance of reservoirs behavior under smart water flooding. In this paper, smart water injection in carbonate and sandstone reservoirs has been comprehensively investigated. This study includes a review of effective mechanisms, laboratory and field observation and the challenge of smart water flooding in both carbonate and sandstone reservoirs. Finally, the screening criteria of candidate reservoirs for smart water injection are presented and based on that, smart water injection in carbonate reservoirs in southwestern Iran has been assessed.
 

کلیدواژه‌ها [English]

  • Enhanced Oil Recovery
  • Smart Water Injection
  • Low-Salinity Water Injection
  • Carbonate and Sandstone Reservoirs
  • Laboratory and Field Studies
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