A Method to Characterize Nonlinear Elastic Rock's Mechanical Behaviors During Reservoir Depletion
Publication Date: 2005-Aug-15
The IP.com Prior Art Database
A new methodology has been developed to calculate pore volume compressibility, reservoir compaction coefficient and stress path at different stages of reservoir depletion. The method proposed the use of triaxial test derived stress-strain curves to compute rock mechanical properties (Young's modulus and Poisson's ratio)corresponding to the reservoir stress condictions. Using this method, it is clearly shown that pore volume compressibility increases at late stage of reservoir pressure depletion, an observation in contradiction to the current view. This use of this methodology is facilitated by Baker Atlas' proprietary software Logging of Mechanical Properties (LMP). LMP, using log-derived paramters, can simulate triaxial tests to generate stress-strain curves at any reservoir pore pressure and stress condictions.