کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8128179 1522990 2018 35 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Three-dimensional hydro-mechanical model of borehole in fractured rock mass using discrete element method
ترجمه فارسی عنوان
مدل سه بعدی هیدروکربنی گمانه در توده سنگ شکسته با استفاده از روش عنصر گسسته
کلمات کلیدی
گمانه برش، مدل سازی عنصر گسسته، هیدرومکانیکی،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
چکیده انگلیسی
Borehole stability, in heavily fractured rock mass has been a significant issue in deep earth resources exploration and extraction. In this study, a three-dimensional model using 3DEC is developed to simulate a borehole drilled in fractured rock mass. A model with overbalanced drilling conditions is simulated in this study. In doing so, different depths of a borehole, MB-1 borehole, in Northern Perth basin was simulated. The developed model was validated against log measurements of Caliper log and strength of rock is found as a governing factor in controlling the stability. Then, hydro mechanical modelling was carried out and it was observed that high mud flow rates and high pore pressure increased the instability around borehole. Furthermore, a parametric study was performed to investigate the influence of viscosity and fluid flow on the stability. Shear displacement linearly increase with an increase in flow rate while fluid pressure decreases due to increase in fractures aperture with an increase in flow rate. Similarly, increase in viscosity caused increase in fracture shearing and therefore instability around borehole.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Natural Gas Science and Engineering - Volume 53, May 2018, Pages 263-275
نویسندگان
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