Play 10 – Niguanak-Aurora Play

Source: U.S. Geological Survey, The Oil and Gas Resource Potential of the Arctic National Wildlife Refuge 1002 Area, Alaska, 1998

Two Scenarios: It is uncertain whether the Niguanak high and Aurora dome should be considered as a play with two large prospects(two dome scenario) or a play with many prospects(many prospect scenario). So, a probability of 0.3 was assigned to two dome scenario and a probability of 0.7 was assigned to many prospect scenario, so that each scenario could be analyzed separately. (See page 45 of P110.pdf for explanation)

Location:
Area: 389 586 acres 
Area within the 1002 area: 238 791 acres
Area beneath KIC lands: 76 061 acres 
Area beneath state water: 74 734 acres


Two Dome Scenario:

Vertical Structure:
Trap depth (thousands of feet): 10(95), 12(50), 14(5)
Average surface elevation (feet): 100
Net reservoir thickness (feet): 70(95), 150(50), 270(5)
Area of closure (thousands of acres): 130(95), 180(50), 235(5) 


Mean total volume of oil(millions of barrels): 1107.04(standard deviation: 2479.21)
Mean total volume of all gas(billions of cubic feet): 1178.96(standard deviation: 2804.94)
Mean total volume of all natural gas liquids (millions of barrels): 51.49(standard deviation: 132.02)


Porosity (percent): 6(95), 10(50), 17(5)
Water saturation (percent): 41.7(95), 25.0(50), 14.7(5)
Correlation between porosity and water saturation: -1


Many Prospect Scenario:

Vertical Structure:
Trap depth (thousands of feet): 9(95), 13(50), 17(5)
Average surface elevation (feet): 100
Net reservoir thickness (feet): 70(95), 150(50), 270(5)
Area of closure (thousands of acres): 7.5(95), 20(50), 80(5) 


Mean total volume of oil(millions of barrels): 1018.62(standard deviation: 1866.04)
Mean total volume of all gas(billions of cubic feet): 1266.75(standard deviation: 2417.62)
Mean total volume of all natural gas liquids (millions of barrels): 82.48(standard deviation: 179.36)


Porosity (percent): 6(95), 10(50), 17(5)
Water saturation (percent): 41.7(95), 25.0(50), 14.7(5)
Correlation between porosity and water saturation: -1