کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8126516 | 1522806 | 2015 | 44 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Poroelastic stress modifications surrounding a fully-penetrating injection well
ترجمه فارسی عنوان
تغییرات تنش زدایی در اطراف یک تزریق کاملا نفوذی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
چکیده انگلیسی
The poroelastic response of a confined porous layer is found to be independent of seal rock stiffness in lower permeabilities (<0.05Â Darcy). However, in unconsolidated hydrocarbon reservoirs where permeability is typically higher, seal rock stiffness is proven to have a notable impact on the near-wellbore geomechanical response during injection. It is the ratio of the overburden stiffness parameter to reservoir's bulk modulus that dictates the geomechanical response of the injection layer: once the ratio approaches unity, practically no shear stress is induced; for ratios exceeding unity, deviatoric stresses gradually increase; and in case of ratios bellow unity, reservoir formation can behave in a complicated manner depending on the initial stress regime, where reorientation of the minimum principal stress occurs from horizontal to vertical plane. Fracture reorientation is concluded to be a result of an increase in reservoir's bulk modulus during prolonged injection cycles. Sensitivity analyses reveal an enhanced state of limiting shear resistance in case of: higher anisotropy, higher elastic moduli, lower permeability, and a higher degree of soil-fluid coupling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Petroleum Science and Engineering - Volume 135, November 2015, Pages 660-670
Journal: Journal of Petroleum Science and Engineering - Volume 135, November 2015, Pages 660-670
نویسندگان
K. Atefi Monfared, L. Rothenburg,