Second Recovery

Question 1

Although considerable variation exists around the world, globally, the percent of fossil fuels that are used for the primary energy supply is more than:

a. 85%

b. 60%

c.  50%

d.  35%

Question 2

The most cleanly burning fossil fuel available that produces the least pollutants is:

a.coal, usually found in deposits deep within the Earth

b.kerosene, found in deposits associated with oil wells

c.natural gas, usually found in deposits associated with oil

d.nuclear energy, produced from rocks and minerals within the Earth

Question 3

More oil can be expected from a P50 of a 100 million barrel field than from an oil field with  a:

a.P70 for a 100 million barrel field.

b.P10 for a 150 million barrel field.

c.P40 for a 200 million barrel field.

d.P95 for a 90 million barrel field.

Question 4

Because of the challenges associated with removing oil from the ground:

a.the first oil removed from a well is the most expensive to extract.

b.enhanced recovery of oil is more expensive than secondary recovery.

c.primary recovery of oil is more expensive than secondary recovery.

d.only about 60% of the oil in a well can be removed by just pumping.