کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
6476145 1424978 2016 8 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Changes to coal pores and fracture development by ultrasonic wave excitation using nuclear magnetic resonance
ترجمه فارسی عنوان
تغییرات در حفره های زغال سنگ و توسعه شکستگی با تحریک موج اولتراسونیک با استفاده از رزونانس مغناطیسی هسته ای
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کلمات کلیدی
امواج التراسونیک، شکستگی ها، رزونانس مغناطیسی هسته ای، اثرات کاویتاسیون،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


- The closed pores and connected pores in the coal are differentiated with nuclear magnetic resonance technique.
- The amount and proportion of connected pores in the coal increase significantly after the treatment of ultrasonic.
- After the fracturing of the ultrasonic, a fracture network forms in the coal.

To maximize the extraction efficiency and quantity of coalbed methane, we improved reservoir permeability by fracturing coalbed methane reservoirs using ultrasonic wave excitation. Changes in number and diameter of pores in coal masses were determined by using nuclear magnetic resonance analysis of coal masses that had been fractured using ultrasonic waves. The development of coal fractures was monitored and analyzed using thermal imaging, a digital camera, and a measurement system for P-wave velocities in rocks. The development of fractures induced by ultrasonic waves, the pore diameters, and the number of pores in the coal masses increased, and the porosity increased by 111.8%. The entire fracturing process was divided into three stages; the initiation of micropores occurred earlier than that of mesopores, and was followed by macropore development and fracturing. P-wave tests and photographs showed that fracture networks formed inside or on coal mass surfaces under ultrasonic wave excitation, which improved the coal mass permeability significantly. Because pores that contain water provide initiation points for fractures that are caused by ultrasonic waves, the ultrasonic waves impact larger ranges and require less energy than with traditional fracturing measures. By promoting oil production using ultrasonic waves, a design concept for industrializing ultrasonic wave-based fracturing was proposed to improve coalbed methane extraction.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 186, 15 December 2016, Pages 571-578
نویسندگان
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