تعیین بازه مطلوب مؤلفه‌های مخزنی در مخازن زغال سنگ حاوی متان برای عملیات فزونی برداشت با تزریق گاز دی‌اکسید کربن

نویسندگان

دانشگاه آزاد اسلامی واحد مرودشت

چکیده

عوامل بسیاری بر روی بازدهی عملیات فزونی برداشت در مخازن زغال سنگ حاوی متان تأثیر می‌گذارند. برخی از مهم‌ترین این مؤلفه‌ها در این‌تحقیق مطالعه شد. بهترین بازۀ این مؤلفه‌ها برای انجام عملیات فزونی برداشت با استفاده از نرم‌افزار شبیه‌سازی مخازن اکلیپس به‌دست آمد. پس از انتخاب داده‌های مورد نظر برای تجزیۀ حساسیت‌سنجی، مدل‌های مربوطه با شرایط مختلف تعریف و سپس نتایج به‌دست‌آمده از این شبیه‌سازی بررسی و تحلیل شد. شاخص‌های تحلیل تجزیۀ حساسیت‌سنجی عبارتند از میزان گاز دی‌اکسید کربن تولیدشده و همچنین نرخ این تولید به‌علاوۀ میزان گاز دی‌اکسید کربن ذخیره‌شده در مخزن که از جنبۀ زیست‌محیطی برای صنعت نفت و گاز اهمیت دارد. برطبق نتایج تجزیۀ حساسیت‌سنجی می‌توان گفت که مؤلفه‌های تراوایی و تخلخل سامانۀ شکاف اگر از حد خاصی پایین‌تر روند عملیات فزونی برداشت را با شکست روبه‌رو می‌سازند. این در حالی است که سه مؤلفۀ‌ دیگر یعنی فشار مخزن، فشار لانگمیور و ضریب یانگ تنها بازدهی عملیات فزونی برداشت را دستخوش تغییر می‌کنند.

کلیدواژه‌ها


عنوان مقاله [English]

Determination of Optimum Reservoir Parameters in Coalbed Containing Methane for Enhanced Recovery Operation Via Carbon Dioxide Gas Injection

نویسندگان [English]

  • N. Esfandiari
  • M. Ghasemipour
Marvdasht Branch, Islamic Azad University
چکیده [English]

Many parameters affect the efficiency of enhanced recovery operations in methane-containing coal beds. Some of the most important parameters in this research were studied. The best output for performing enhanced recovery of these parameters was obtained in ECLIPSE reservoir simulation software. After selecting the data for sensitivity analysis, the corresponding models were defined with different conditions. Then the results of this simulation were analyzed. Sensitivity analysis indicators include the amount of produced carbon dioxide, as well as the rate of this product plus the amount of carbon dioxide stored in the reservoir which is important for the oil and gas industry from the environmental point of view. According to the results of the sensitivity analysis in line with the studied parameters, it can be stated that if the permeation parameters and the porosity of the slit system be lower than a certain extent, they will lead to failure in the process of enhanced recovery. Meanwhile, the other three parameters, reservoir pressure, Langmuir pressure, and Yang coefficient, only affect the efficiency of the enhanced recovery operation.

کلیدواژه‌ها [English]

  • Coalbed Reservoirs
  • Methane
  • Enhanced Recovery
  • Reservoir Parameters
  • Carbon Dioxide

 

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