Page 60 - Introduction to Petroleum Engineering

44 THE FUTURE OF ENERGY
energy density to calculate the cost per unit of energy. Use the information in
the table and unit conversion factors to complete the table.

Fuel Price Energy Density $ per MJ
Coal $50 per tonne 42 MJ/kg
Oil $60 per barrel 42000 MJ/m 3
Methane $3 per MSCF 38 MJ/m 3

2.7 Suppose Country A imports 55% of its oil. Of this amount, 24% is imported
from Region A. What is the percent of oil imported into Country A from
Region A?
2.8 A. A national oil company (NOC) reports that it has 700 billion bbl OOIP. The
resource is classified in the table that follows. Fill in the % OOIP column.

Classification Category Volume (billion bbl) % OOIP
Produced 99
Remaining proved 260
Probable 32
Possible 71
Contingent 238

B. How long can the NOC produce at a production capacity of 10 million
bbl/day using remaining proved reserves? Express your answer in years.
C. How long can the NOC produce at a production capacity of 15 million
bbl/day using remaining proved reserves? Express your answer in years.
2.9 Estimate the year when peak oil occurs using Gaussian fits to data for years
2000, 2008, and 2014 shown in Figure 2.10.

2.10 A. Use Figure 2.13 to estimate the length of time (in years) it took for the
transition from wood to coal.
B. Use Figure 2.13 to estimate the length of time (in years) it took for
the transition from coal to oil.
C. What will be the next transition and how long will it last?