ارزیابی روابط تجربی افت فشار در چاه‌های تولیدی یک میدان گاز میعانی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی نفت گاز و پتروشیمی، دانشگاه خلیج فارس، بوشهر

2 پژوهشکده ازدیاد برداشت مخازن، شرکت ملی نفت، تهران، ایران

چکیده

در چاه‌های مخازن گاز میعانی عمدتاً جریان چندفازی مشاهده می‌شود. روابط مختلفی جهت پیش‌بینی افت فشار پیشنهاد شده، ولی تا به حال هیچ رابطه‌ای یافت نشده که افت فشار را در محدوه وسیعی از شرایط عملیاتی پیش‌بینی نماید. در این مقاله با استفاده از داده‌های اندازه‌گیری شده در ابزار نمودارگیری پتانسیل شبه خودزا در چهار لایه یک مخزن گاز میعانی به مقایسه‌ روابط مختلف تجربی پیش‌بینی افت فشار و ماندگی مایع پرداخته شده و بهترین روابط با استفاده از دو نرم‌افزار ارائه شده است. سپس با کاربرد داده‌های اندازه‌گیری شده، روابط نرم‌افزار پراسپر بهینه‌سازی گردید. درنهایت فشار ته‌چاهی از رابطه‌ کمینه خطای نرم‌افزار پایپ‌سیم و روابط قبل و پس از بهینه‌سازی نرم‌افزار پراسپر محاسبه شد. از مقایسه‌ نتایج شبیه‌سازی دو نرم‌افزار، تطابق مطلوبی بین روابط بهینه‌ هاگیدورن- برون و پترولیوم اکسپرت از نرم‌افزار پراسپر و رابطه‌ گری از نرم‌افزار پایپ‌سیم مشاهده گردید. نتایج حاصل از این پژوهش، روش جدیدی در غربال‌گری روابط تجربی پیش‌بینی رفتار جریانی و ماندگی چاه‌های گاز میعانی فقیر معرفی می‌نماید.
 

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of Pressure Drop Empirical Correlations in Producing Wells of a Gas Condensate Field

نویسندگان [English]

  • Reza Azin 1
  • Shahriar Osfouri 1
  • Mohammad Hossein Heidari Sureshjani 1
  • Mohammad Hossein Heidari Sureshjani 2
  • Shahab Gerami 2
1 Faculty of Petroleum, Gas and Petrochemical Engineering, Persian Gulf University, Bushehr, Iran
2 Research Institute, NIOC-EOR, Tehran, Iran
چکیده [English]

Usually, multiphase flow often occurs in producing wells of gas condensate reservoirs. Different correlations were proposed for predicting pressure drop in such reservoirs. However, no correlation or model is found to predict pressure drop in a wide range of operating conditions. In this paper, pseudo spontaneous potential logging (PSP) data measured at field conditions are used to compare the performance of different correlations in predicting pressure drop and liquid holdup in four gas condensate producing wells. Measured field data from four layer wells were used to tune the vertical lift performance (VLP) correlations and best correlations were recommended from matching between measured data and tuned correlations. Finally, measured wellhead pressure and gas flow rate were used to calculate and compare bottom-hole pressure from correlations of pipesim and after-before tuned correlations of prosper with minimum error. By comparing simulation results, Gray,  from pipesim software and hagedorn & brown and petroleum expert2 correlations were found most accurate correlations for gas condensate wells from prosper sftware. Results of this study open a new screening criteria for selecting the best correlations to be applied in lean gas condensate wells.
 

کلیدواژه‌ها [English]

  • Gas Condensate
  • Flow modeling
  • Producing well
  • Pressure Drop
  • Optimization

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