Which of the following is/are true regarding Coal Seam Gas?

1) It is produced from coal bed methane.

2) It contains very little heavier hydrocarbons such as propane or butane.

a. Only 1

b. Only 2

c. Both 1 and 2

d. Neither 1 nor 2

ANSWER: Only 2

Explanation:

Coalbed methane (CBM or coal-bed methane), coalbed gas, coal seam gas (CSG), or coal-mine methane (CMM) is a form of natural gas extracted from coal beds.

In recent decades it has become an important source of energy in United States, Canada, Australia, and other countries.

The presence of this gas is well known from its occurrence in underground coal mining, where it presents a serious safety risk.

Unlike much natural gas from conventional reservoirs, coalbed methane contains very little heavier hydrocarbons such as propane or butane, and no natural-gas condensate. It often contains up to a few percent carbon dioxide.