Use of geologic model data in reservoir simulation

 

Use of geologic model data in reservoir simulation
Property	Use in Simulation	Status
Structure top	Reservoir depth       Initial reservoir pressure       Original oil in place (OOIP ) and original   gas in place (OGIP) calculations	Required for top layer
Net reservoir thikness,hn	Assignment of cell net thikness values       Horizontal –transmissibility calculations      Pore volume calculations      Calculation of well geometric factors, Gw       OOIP and OGIP calculations	Required
Gross reservoir thikness, hg	Assignment of cell gross thikness values       Gravity head calculations        Initial reservoir pressures Transition-zone calculations. Initial saturation distributions. Vertical-transmissibility calculations	Optional (default may be obtained from net thikness)
Net-to-gross ratio	Assignment to cell hn/hg values	Optional (default may equal 1, hn/hg =1 )
Porosity	Assignment of cell Ⴔ values     Development of porosity /permeability transforms.     Pore volume (PV) calculations.     OOIP and OGIP calculations.	Required for all layers
Horizontal permeability	Assignment of cell permeability values     Horizontal –transmissibility calculations.     Development of porosity /permeability transforms.     Calculation of well geometric factors , Gw  .	Required for all layers
Vertical permeability	Assignment of cell permeability values.     Vertical –transmissibility calculations.	Optional (default may  be obtained from Kv /kh=1)
Initial saturations	Initial saturations distributions.     Transition –zone heights.     OOIP and OGIP calculations.	Optional (default may be obtained from Pc data )
End point saturations	Saturation normalization.     Assignment of cell critical saturation values for saturatioun normalization.	Optional (default may be obtained from kr curves )
Fluid Contacts	OOIP and OGIP calculations.     Initial saturation distributions.     Initial reservoir pressures.	Required