Drilling

Petroleum City

Oil Well

Petroleum HQ

Oil Refinery

Cities specialized in Drilling extract and process oil for profit.

• Natural resources such as ore, coal and oil are finite in a region.

• Be sure to inspect the cities' resource stats and resource data maps to find where the oil deposits are before you claim your city and zone your districts.

Oil extracted from the ground can be processed into more valuable resources such as fuel and plastic.

• A refinery can be built to convert petroleum into fuel and plastic.

Drilling also known as Petroleum is one of the big business specializations with its own global leaderboard.

Petroleum Structures

Oil Well

Main article: Oil Well

Petroleum HQ

Main article: Petroleum HQ

Oil Refinery

Main article: Oil Refinery