Harmony search optimization applied to reservoir engineering assisted history matching

SHAMS Mohamed,EL-BANBI Ahmed,SAYYOUH Helmy

Table 2 Values of history matching parameters for different workflows.

History matching parameter History matching technique Manual history matching Sobol- ANN- HSO Sobol- ANN- GA Oil water contact/m 2191 2187 2198 Oil gas contact/m 2067 2066 2072 Perm. multiplier in X,Y direction 5.06 3.62 4.21 Perm. multiplier in Z direction 5.24 6.08 2.23 Critical water saturation/% 32 33 34 Corey exponent of water (krow) 3.80 4.44 3.06 Water relative permeability under residual oil saturation 0.48 0.54 0.48 Corey exponent of oil (krow) 3.71 3.63 3.91 Corey exponent of oil (krog) 3.84 4.30 3.09 Oil relative permeability under the largest oil saturation 0.63 0.64 0.63 Corey exponent of Gas (krog) 2.31 1.86 3.06 Gas relative permeability under irreducible water saturation 0.85 0.85 0.87 Gas relative permeability under residual oil saturation 0.62 0.64 0.60 Volatile gas to oil ratio/(m3•m-3) 0.08 0.08 0.09 Dissolved gas oil ratio/(m3•m-3) 1.08 1.14 1.04