کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5483558 | 1522521 | 2017 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In-situ stress measurements and stress distribution characteristics of coal reservoirs in major coalfields in China: Implication for coalbed methane (CBM) development
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
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چکیده انگلیسی
Coal reservoir permeability decreases exponentially with the increase in effective in-situ stress (EIS, (ÏH + Ïh + Ïv)/3 â Po). Vertically, four distinct vertical bands of coal permeability can be found in the EMOB, SQB and WGP, defined by the compression and deformation of the coal-matrix under certain stress regimes: in shallow coal seams (EMOB, < 800 m; SQB, < 650 m; WGP, < 500 m), coal reservoirs are within a strike-slip faulting stress regime (ÏH > Ïh > Ïv) where ÏH and Ïh tend to increase, and coal permeability decreases exponentially with an increasing depth; in intermediate coal seams (EMOB, 800-1000 m; SQB, 650-825 m; WGP, 500-750 m), the Ïv > ÏH > Ïh stress regime plays a major role, with relatively high coal permeability. For deep coal seams (EMOB, > 950 m; SQB, > 825 m; WGP, > 750 m), CBM development conditions deteriorate due to a state of “extremely low permeability and extremely high in-situ stress”.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Coal Geology - Volume 182, 1 September 2017, Pages 66-84
Journal: International Journal of Coal Geology - Volume 182, 1 September 2017, Pages 66-84
نویسندگان
Shida Chen, Dazhen Tang, Shu Tao, Hao Xu, Song Li, Junlong Zhao, Pengfei Ren, Haijiao Fu,