S. 19 Hydrocarbons Final Test Review

This set of flashcards is designed to help students review key concepts and facts related to hydrocarbons in preparation for their final test.

What are hydrocarbons primarily composed of?

Organic carbon in gas, liquid, or solid form.

Which of the following is NOT a form of hydrocarbon?

Water vapor.

What distinguishes dry natural gas?

Contains >99% methane.

Wet natural gas includes all of the following EXCEPT:

Carbon dioxide.

Which of the following is NOT typically found in oils?

Silicates.

How many elements are required in a hydrocarbon system?

Five.

What is the minimum TOC required in source rocks?

1%.

Which of the following is NOT a source of organic matter in source rocks?

Quartz.

At what temperature range does oil typically form?

80–150°C.

Gas typically forms at what temperature range?

100–200°C.

Which of the following is NOT a major source interval?

Paleocene.

Which of the following is a structural trap?

Fault.

Which of the following is a stratigraphic trap?

Unconformity.

Reservoir rocks must be:

Porous and permeable.

Common reservoir rocks include:

Sandstone and limestone.

Which of the following is NOT a type of seal?

Sandstone.

Which of the following can act as a seal?

Tar mats.

What is required for successful hydrocarbon migration?

Proper timing of all elements.

Why is exploration success low?

Independent probability of each element.

Shale gas and shale oil are released by:

Fracking and horizontal drilling.

Coal forms from:

Plant material.

Which of the following is the correct classification of coal ?

Peat → lignite → bituminous → anthracite.

What increases during coal formation?

Carbon content.

Which country has large coal reserves?

United States.

What is emphasized in the summary points?

Hydrocarbon complexity and system elements.