10 فروردین 1403
رضا آذين

رضا آذین

مرتبه علمی: استاد
نشانی: دانشکده مهندسی نفت، گاز و پتروشیمی - گروه مهندسی نفت
تحصیلات: دکترای تخصصی / مهندسی نفت
تلفن: -
دانشکده: دانشکده مهندسی نفت، گاز و پتروشیمی

مشخصات پژوهش

عنوان Pre-Darcy Flow and Klinkenberg effect in Dense, Consolidated Carbonate Formations
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
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مجله Geotechnical and Geological Engineering
شناسه DOI
پژوهشگران زهره فرمانی (نفر اول) ، دانیال فرخیان (نفر دوم) ، امین ایزدپناهی (نفر سوم) ، فاطمه سیفی (نفر چهارم) ، پرویز زاهدی زاده (نفر پنجم) ، آزیتا قادری (نفر ششم به بعد) ، زهره صفری (نفر ششم به بعد) ، رضا آذین (نفر ششم به بعد) ، فاطمه کاظمی (نفر ششم به بعد)

چکیده

Experimental studies on pre-Darcy flow generally focus on unconsolidated porous media with high permeability. In this work, pre-Darcy flow is studied in consolidated carbonate rocks from different formations of Zagros basin. The core samples are calcite, dolomite and chalk-salt characterized by low-porosity (12.33–28.21%) and low permeability (0.011–18.53 md). Digital rock images were obtained using dental CT-scan with a resolution of 200 pixels per ?m. A series of single-phase flooding experiments were conducted to evaluate the onset of pre-Darcy flow in different cores using N2 as gas phase. Superficial velocity versus pressure gradient was measured and different onset values were reported. Results indicate the presence of pre-Darcy flow in single phase gas experiments. The minimum observed Darcy velocity was 0.445?×?10?05 m/s, below which pre-Darcy flow prevails. In addition, different flow regimes such as pre-Darcy, Darcy and non-Darcy flow regimes were determined using reduced pressure drop analysis and Reynolds number analysis. The range of Reynolds number were reported for different flow regimes and different core permeabilities. The pre-Darcy regime was observed at velocities in the range of (0.445–5.88)?×?10?05 m/s for all cores. For a carbonate core with k?=?0.01 md, pre-Darcy flow was observed in the range of Rek?Rek?