Fracture Characterization through Multi-Physics Joint Inversion

Friday, 19 December 2014: 10:35 AM
Stefan Finsterle1, John Kearney Edmiston2 and Yingqi Zhang2, (1)Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (2)Lawrence Berkeley National Laboratory, Berkeley, CA, United States
Natural and man-made fractures tend to significantly impact the behavior of a subsurface system – with both desirable and undesirable consequences. Thus, the description, characterization, and prediction of fractured systems requires careful conceptualization and a defensible modeling approach that is tailored to the objectives of a specific application. We review some of these approaches and the related data needs, and discuss the use of multi-physics joint inversion techniques to identify and characterize the relevant features of the fracture system. In particular, we demonstrate the potential use of a non-isothermal, multiphase flow simulator coupled to a thermo-poro-elastic model for the calculation of observable deformations during injection-production operations. This model is integrated into a joint inversion framework for the estimation of geometrical, hydrogeological, rockmechanical, thermal, and statistical parameters representing the fractured porous medium.