CPA Petroleum Industry Fundamentals 2

Question 1

Which type of hydrocarbon trap is formed when impermeable rock layers bend upward to create a dome-shaped structure?

Accepted Answer

Anticline trap

Answer

An anticline trap forms when rock layers fold upward into a dome, with the impermeable cap rock preventing hydrocarbons from escaping upward.

Question 2

What is the primary purpose of a Christmas tree on an oil well?

Accepted Answer

To control and regulate flow from the well

Answer

A Christmas tree is an assembly of valves, gauges, and fittings installed at the wellhead to control and regulate the flow of oil and gas from the well.

Question 3

In petroleum geology, what does the term 'source rock' refer to?

Accepted Answer

Organic-rich rock where hydrocarbons are generated

Answer

Source rock is organic-rich sedimentary rock where heat and pressure convert organic material (kerogen) into oil and gas over millions of years.

Question 4

What is 'secondary recovery' in oil production?

Accepted Answer

Injecting water or gas to maintain reservoir pressure

Answer

Secondary recovery involves injecting water or gas into a reservoir to maintain pressure and displace additional oil toward production wells after primary recovery declines.

Question 5

Which unit is most commonly used to measure crude oil volume in international trade?

Accepted Answer

Barrel

Answer

The barrel (bbl), equal to 42 US gallons or approximately 159 liters, is the standard unit for measuring crude oil volume in international trade.

(CPA) Certified Petroleum Apprentice Practice Test

(CPA) Certified Petroleum Apprentice Practice Test

CPA Petroleum Industry Fundamentals 2