مدل‌سازی فیزیکی و عددی تاثیر اندازه گراول پک بر تولید ماسه در چاه‏های نفت با طراحی و ساخت دستگاه

نوع مقاله: مقاله پژوهشی

نویسندگان

1 گروه مهندسی معدن، دانشکده فنی و مهندسی، واحد تهران جنوب، دانشگاه آزاد اسلامی، تهران

2 دانشکده مهندسی معدن و متالوژی، دانشگاه صنعتی امیرکبیر، تهران، ایران

3 گروه مهندسی معدن دانشگاه تربیت مدرس، تهران، ایران

4 گروه مهندسی معدن، دانشکده فنی و مهندسی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران

چکیده

در این تحقیق با طراحی و ساخت دستگاه و مدل‌سازی عددی، تولید ماسه و عملکرد گراول پک شبیه‌سازی شد. با این دستگاه و مدل عددی می‌توان سنگ‌های مختلف را همراه با سیال‌های گوناگون، تحت تنش‌های متفاوت جهت شبیه‌سازی تولید ماسه و ارزیابی عملکرد گراول پک آزمایش نمود. در این مطالعه از ماسه با دانه‌بندی مشخص، از شن با چند اندازه متفاوت و همچنین آب جهت شبیه‌سازی تولید ماسه و گراول پک در فشارهای متفاوت، استفاده شد. برای ساخت مدل عددی از نرم‌افزار PFC3D استفاده شد. در مدل عددی از ماسه با اندازه 22/0 تا mm 1/1 و از شن با اندازه‌های 5/3 تا 76/4، 76/4 تا 9، 9 تا 6/12 و 6/12 تا mm 8/16 و در مدل فیزیکی از شن با اندازه‌های 9 تا mm 76/4 و 19 تا mm 25/9 استفاده شد. مدل عددی درحالت بدون گراول پک با دستگاه شبیه‌ساز کالیبره شد. نتایج مدل‌سازی‌ها نشان داد که در مدل عددی با گراول پک اندازه 5/3 تا mm 76/4 تولید ماسه کمترین مقدار را داشت و در مدل فیزیکی با گراول پک اندازه 9 تا mm 76/4 تولید ماسه کمتر و دبی خروجی سیال بیشتر بود.
 

کلیدواژه‌ها


عنوان مقاله [English]

Physical and Numerical Modeling of the Effect of Gravel Pack Size on Sand Production in Oil Wells by Designing and Manufacturing Machine

نویسندگان [English]

  • reza shirinabadi 1
  • Parviz Moarefvaand 2
  • Kamran Goshtasbi 3
  • Kaveh Ahangari 4
1 Department of Mining Engineering, South Tehran Branch, Islamic Azad University, Tehran
2 Department of Mining and metallurgy Engineering, Amirkabir University (Polytechnique), Tehran
3 Department of Mining Engineering, Tarbiat Modares University, Tehran
4 Department of Mining Engineering, Science and Research Branch, Islamic Azad University, Tehran
چکیده [English]

 
This research discusses the effect of gravel pack size on sand production by designing and manufacturing machine and a numerical model for simulating sand and gravel pack production. Different rocks and fluids can be tested under different stresses to simulate sand and gravel pack using this machine and the numerical model. In this study, sand with certain aggregation, gravel in different sizes, and water were used to simulate production of sand and gravel pack. PFC3D was used to create a numerical model. Sand size between 0.22-1.1 mm and gravel sizes between 3.54.76 mm, 4.769 mm, 9-12.6 mm, and 12.6-16.8 mm were used in the numerical model and gravel sizes between 4.76 – 9 mm and between 9.25 -19 mm were used in the physical model. The results obtained from the modeling showed that in the numerical model with the gravel pack sizes between 3.5-4.76 mm, production of sand was minimal; in the physical model with the gravel pack sizes between 4.76-9 mm, sand production was less and output flow rate of the fluid was more. In addition, the results of the physical model showed that after putting gravel pack, fluid production rate decreased over time and reached a constant amount. Therefore, it may be proposed that size of gravel pack between 4.76-9 mm is more suitable as far as fluid production rate and sand production prohibition is concerned.
 

کلیدواژه‌ها [English]

  • Sand Production
  • Experimental Modeling
  • PFC3D
  • Oil Well
  • Gravel Pack

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