Assessing Technical and Economic Recovery of Oil Resources

Basin Name Permian West Texas 8A17 YField NameReservoirWASSON (DENVER)SAN ANDRESReservoir Parameters: MPZ ROZ Oil Production MPZ ROZ Volumes MPZ ROZArea (A) 27,848 27,848 Producing Wells (active) 1,293 - OOIP (MMbl) 2,371.9 1,039.0Net Pay (ft) 141 150 Producing Wells (shut-in) 1,210 - Cum P/S Oil (MMbl) 1,041.5 -Depth (ft) 5,200 5,380 Cum Oil (MMbbl) 1,210.7 - 2002 P/S Reserves (MMbl) 57.3 -Oil-Water Contact Dip N/A 30 2002 Production (MMbbl) 13.1 - Ult P/S Recovery (MMbl) 1,098.8 -Porosity 12.0% 12.0% CO2-EOR Cum (MMbbl) 169.2 - Remaining (MMbbl) 1,273.1 1,039.0Reservoir Temp (deg F) 105 105 2002 CO2-EOR (MMbbl) 9.3 - Recovery Efficiency (%) 46% 0%Initial Pressure (psi) 1850 1850 02 CO2-EOR Reserves (MMbbl) 141.8 -Pressure (psi) 1100 1100 OOIP Volume CheckWater Production Reservoir Volume (AF) 3,926,568 4,177,200B oi 1.310 1.310 2002 Water Production (Mbbl) 0 0 Bbl/AF 604.1 248.7B o @ S o, swept 1.050 1.310 Daily Water (Mbbl/d) 0 0.0 OOIP Check (MMbl) 2,371.9 1,039.0S oi 0.850 0.350Swept Zone S o 0.350 0.350 Injection SROIP Volume CheckS wi 0.150 0.650 Injection Wells (active) 1198 0 Reservoir Volume (AF) 3,926,568 4,177,200Injection Wells (shut-in) 0 0 Swept Zone Bbl/AF 310.3 248.7API Gravity 33 33 2002 Water Injection (MMbbl) 0 0.0 SROIP Check (MMbbl) 1,218.5 1,039.0Viscosity (cp) 1.18 1.18 Daily Injection - Field (Mbbl/d) 0 0.0Cum Injection (MMbbl) 0 0.0Dykstra-Parsons 0.75 0.75 Daily Inj per Well (Bbl/d) 0 0.0 ROIP Volume CheckROIP Check (MMbl) 1,273.1 1,039.0Figure 28. Wasson-Denver Unit Input Parameters3-14 February 2006