Assessing deformation and fracturation with volumic balanced restoration
Résumé
This poster illustrates a methodology to characterize fracturation and assess induced permeability based
on connectivity analysis. Fractures parameters (density, size, aperture...) are stochastically generated
from well data. Secondary information (soft data) is an analogue parameter that integrates all available
indirect information on fractures (seismic attributes, strain, stress, curvatures...). Multivariate statistics are
used to find the best non-linear combination of indirect parameters that fits observed parameters on wells.
Strain related information (tensor, principal strain direction and elongations) can be easily computed over
all a defined volume using 3D balanced unfolding based on tetrahedral meshes. It may enhance greatly
the quality of the analogue fracture parameter. A new methodology derived from mechanics of continuum
media allows to estimate the restored geometry and a static strain associated with the folding / faulting
process.