contributor author | Brice Lecampion | |
contributor author | Andrei Constantinescu | |
contributor author | Laurent Malinsky | |
date accessioned | 2017-05-08T21:31:55Z | |
date available | 2017-05-08T21:31:55Z | |
date copyright | May 2006 | |
date issued | 2006 | |
identifier other | %28asce%291532-3641%282006%296%3A3%28201%29.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/55052 | |
description abstract | This paper discusses the identification of poroelastic constants and hydraulic conductivity from two transient laboratory tests performed on cylindrical core: drained isotropic confinement and pulse test. The combination of the two tests allows us to estimate all poroelastic parameters with the exception of the shear modulus. Despite the lack of analytical solutions for the fully coupled case, closed form solutions of the forward problems are obtained for a slender specimen. The validity of these solutions for a realistic aspect ratio of the core is assessed by a comparison with a finite element model. The identification problem is solved by minimizing a least square functional using an explicit gradient computed using the direct differentiation of the closed form solution and a Levenberg–Marquardt algorithm. The uniqueness of this inverse problem as well as the effect of noise on input data are fully discussed. The identification procedure is then applied to tests performed on a deep argillaceous rock (argillite of Meuse Haute–Marne). | |
publisher | American Society of Civil Engineers | |
title | Identification of Poroelastic Constants of “Tight” Rocks from Laboratory Tests | |
type | Journal Paper | |
journal volume | 6 | |
journal issue | 3 | |
journal title | International Journal of Geomechanics | |
identifier doi | 10.1061/(ASCE)1532-3641(2006)6:3(201) | |
tree | International Journal of Geomechanics:;2006:;Volume ( 006 ):;issue: 003 | |
contenttype | Fulltext | |