The aim of this paper is to study the effect of undrained response and horizontal permeability anisotropy on transient changes in pore pressure and stress state of surrounding area to wellbores drilled in swelling shales. For this purpose a finite element model of coupled chemo-hydro-mechanical processes is developed and used. Super convergent patch recovery method is employed to accurately evaluate time dependent stress tensor. From the results of this study it was found that at any time and radial position around the wellbore, change in pore pressure, thus effective stress, depends on horizontal permeability anisotropy, which influences three main contributing processes namely hydraulic flow, chemical effect and undrained response. It was...
Shales make up over 75% of drilled formations and cause over 90% of wellbore instability problems. ...
The complexity of the gas transport mechanism in microfractures and nanopores is caused by the featu...
Shale gas has recently gained significant attention as one of the most important unconventional gas ...
Borehole stability problems are mostly encountered when drilling through chemically active formation...
A generalized anisotropic porothermoelastic formulation incorporating fully coupled thermo-hydro-mec...
The problem of two circular wellbores of different size in a poroelastic medium is considered in the...
Change in pore pressure in chemically active rocks such as shale is caused by several mechanisms and...
Most wellbore instability problems occur in shales due to their unique properties. Shales are highl...
Summary This paper is concerned with the experimental identification of some chemoporoelastic parame...
This work addresses the poroelastic effect on the processes involved in hydraulic fracturing and pos...
Knowledge of shale poromechanical behavior is essential for various environmental issues such as CO2...
Wellbore instability, in particular in deep perforations, continues to be one of the major problem i...
To investigate the anisotropy of coal swelling, this study proposes an effective stress model for sa...
A series of laboratory tests on back-saturated specimens of Opalinus Clay was conducted to investiga...
The poroelastic response of fluid saturated porous rock due to stress variations is of interest in g...
Shales make up over 75% of drilled formations and cause over 90% of wellbore instability problems. ...
The complexity of the gas transport mechanism in microfractures and nanopores is caused by the featu...
Shale gas has recently gained significant attention as one of the most important unconventional gas ...
Borehole stability problems are mostly encountered when drilling through chemically active formation...
A generalized anisotropic porothermoelastic formulation incorporating fully coupled thermo-hydro-mec...
The problem of two circular wellbores of different size in a poroelastic medium is considered in the...
Change in pore pressure in chemically active rocks such as shale is caused by several mechanisms and...
Most wellbore instability problems occur in shales due to their unique properties. Shales are highl...
Summary This paper is concerned with the experimental identification of some chemoporoelastic parame...
This work addresses the poroelastic effect on the processes involved in hydraulic fracturing and pos...
Knowledge of shale poromechanical behavior is essential for various environmental issues such as CO2...
Wellbore instability, in particular in deep perforations, continues to be one of the major problem i...
To investigate the anisotropy of coal swelling, this study proposes an effective stress model for sa...
A series of laboratory tests on back-saturated specimens of Opalinus Clay was conducted to investiga...
The poroelastic response of fluid saturated porous rock due to stress variations is of interest in g...
Shales make up over 75% of drilled formations and cause over 90% of wellbore instability problems. ...
The complexity of the gas transport mechanism in microfractures and nanopores is caused by the featu...
Shale gas has recently gained significant attention as one of the most important unconventional gas ...