کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6747839 | 1429518 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
How moisture loss affects coal porosity and permeability during gas recovery in wet reservoirs?
ترجمه فارسی عنوان
چقدر رطوبت بر روی تخلخل و نفوذپذیری زغال سنگ در طی بازیافت گاز در مخازن مرطوب تاثیر می گذارد؟
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کلمات کلیدی
گاز زغال سنگ، قطر و نفوذ پذیری، تعامل زغال سنگ-گاز رطوبتی، رطوبت، شبیه سازی عددی،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
چکیده انگلیسی
Moisture in coal seams changes gas adsorption capacity, induces coal deformation, and affects coal porosity. However, fewer studies have investigated the dynamic process of moisture loss. In this study, a fully coupled multi-physical model for coal deformation, gas flow and moisture loss was implemented. It validated the coal-gas-moisture interactions of the decay of gas adsorption capacity and the coal shrinkage. Subsequently, the proposed model was applied to a simulation of coal seam gas recovery from wet reservoir and solved using the finite method in COMSOL Multiphysics 3.5. Analyses of the component factors and the sensitive parameters of moisture loss on coal porosity and permeability were comprehensively studied at last. The results reveal that moisture loss enhances coal porosity and permeability. The decay of gas adsorption capacity decreases coal permeability while the coal shrinkage promotes it. The decrease of the adsorption decay coefficient and the increase of the initial density of saturated water vapor and water evaporation constant can enhance the permeability of wet coal seams.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mining Science and Technology - Volume 27, Issue 6, November 2017, Pages 899-906
Journal: International Journal of Mining Science and Technology - Volume 27, Issue 6, November 2017, Pages 899-906
نویسندگان
Teng Teng, Gao Feng, Ju Yang, Xue Yi,