Behavior of a hydraulic fracture in permeable formations
- سال انتشار: 1397
- محل انتشار: مجله معدن و محیط زیست، دوره: 9، شماره: 4
- کد COI اختصاصی: JR_JMAE-9-4_009
- زبان مقاله: انگلیسی
- تعداد مشاهده: 473
نویسندگان
Division of Petroleum Engineering, Faculty of upstream Petroleum Industry, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
Department of Mining and Metallurgical Engineering, Yazd University, Yazd, Iran
Division of Petroleum Engineering, Faculty of upstream Petroleum Industry, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
Division of Petroleum Engineering, Faculty of upstream Petroleum Industry, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
چکیده
The permeability and coupled behavior of pore pressure and deformations play an important role in hydraulic fracturing (HF) modeling. In this work, a poroelastic displacement discontinuity method is used to study the permeability effect on the HF development in various formation permeabilities. The numerical method is verified by the existing analytical and experimental data. Then the propagation of a hydraulic fracture in a formation with a range of permeabilities is studied. The time required for propagation of an HF to 10 times its initial length is used to compare the propagation velocity in the formations with different permeabilities. The results obtained show that the HF propagation can be significantly delayed by a permeability less than almost 10-9 D. Also the effect of HF spacing on the propagation path is studied. It was shown that the stress shadowing effect of HFs remained for a longer spacing than in the elastic model due to the required time for fluid leak-off in the formation. Also the propagation angles are higher in the poroelastic model predictions than the elastic model. Therefore, it is proposed to use the poroelastic model when studying multi-HF propagation in order to avoid errors caused by neglecting the pore fluid effects on the HF propagation paths.کلیدواژه ها
Hydraulic Fracture, Poroelastic Formations, Permeability, Crack Propagationاطلاعات بیشتر در مورد COI
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