... creep law effective stress power law Reservoir Characterization cavern deviatoric stress MPa salt cavern Rock Mech constitutive law strain rate Bérest 1. INTRODUCTION A uniaxial formulation of salt behavior can be written: / = + th ss tE T (contractions and compressions...

... cavern pressure creep creep law salt cavern gas STORAGE OPERATION average cavern pressure deformation 1 1. INTRODUCTION Underground natural gas storage projects have operated successfully since the early 1940 s in many parts of the world (Thoms and Gehle, 2000). Nowadays, thousands of salt...

... test analytical solution salt caprock borehole closure wellbore integrity well abandonment creep law closure convergence rate strain rate wellbore radius creep rate 1. INTRODUCTION This paper focuses on geomechanical simulations to evaluate the concept of creating an additional barrier...

... Drucker-Prager yield surface. Finally, the time, stress, temperature dependent behavior of rock salt was defined as a secondary or steady state double mechanism creep law. A non-linear, 3D finite element (FE) commercial program was chosen (ABAQUS), and some subroutines were created (FORTRAN) to develop...

... implementation in the finite element program ADINA arc presented. The plastic behavior of the material is modeled using the Drucker-Prager yield criterion. The creep behavior is modeled using the WIPP reference creep law. The model is verified through a numerical example. Comparison of the numerical result...

... ABSTRACT: 34 samples taken from cores coming from the Bresse Site (France) were tested by uniaxial compressive creep. An average creep law was formulated using a statistical analysis of the test data. The scattering of the experimental data around this average law was important, diminishing...

... reservoir geomechanics displacement creep law Reservoir Characterization metals & mining time increment mining excavation Wellbore Design Rock mechanics viscoplasticity numerical model creep Upstream Oil & Gas int elasto-viscoplastic model numerical stability equation...

... on rock creep has been aimed at determining the form of the creep law for small, unjointed laboratory specimens. While this essential first step has defined the mechanisms and variables for the intact rock case -- which will also be some of the mechanisms and variables for the jointed rock case...

... Wellbore Design axial stress Reservoir Characterization strength specimen evaluation creep data inelastic law knowledge management isolation rock salt technical memorandum report union carbide corp power law inelastic creep law differential stress level creep strain rate...