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SUMMARY:A New Class of Locally Conservative Numerical Schemes for Coupling
  Multiphase Flows and Reservoir Geomechanics
DTSTART:20140916T153000
DTEND:20140916T163000
DTSTAMP:20260506T045007Z
UID:8424babfc45315610566e6e00a920fbcbe3a7e8163d7cbc1b3ec6924
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Marcio A. Murad\, National Laboratory for Scientific Co
 mputing LNCC/MCTI\, Brazil\nWe propose a new iterative coupled formulation
  based on Biot's theory of poroelasticity for multiphase flows of linear c
 ompressible fluids in strongly heterogeneous carbonated rocks including th
 e geomechanics of theadjacent impermeable geological formations. Within th
 e framework of the so-called iteratively coupled methods and fixed-stress 
 split algorithm we develop mixed finite element methods for the flow and g
 eomechanics subsystems which furnish locally conservative Darcy velocity a
 nd total Lagrangian fluid mass content in the sense of Coussy\, Such field
 s are input for the transport problem for the water saturation which is fo
 rmulated in terms of the Lagrangian porosity. The numerical resolution of 
 the saturation equation is accomplished within a fractional step method. T
 he predictor step is discretized by a higher-order non-oscillatory finite 
 volume central scheme whereas the corrector based on Godunov or Strang spl
 ittings. The geomechanics step is solved in larger domains including the o
 ver-burden\, up to the surface\, under-burden and side-burdens up to the f
 ar field where boundary conditions are enforced. Numerical simulations of 
 a water-flooding problem in secondary oil recovery are presented in domain
 s characterized by images provided by seismic data processing . In additio
 n simulations including the nonlinear stress-strain behavior of the adjace
 nt rocks are performed showing the effects of irreversible deformation upo
 n finger grow and breakthrough curves.
LOCATION:GC A1 416
STATUS:CONFIRMED
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