Oil Wells and Geysers: Seek out Oil Geysers and tap them with Oil Wells to extract their precious fuel.
Sci-fi management sim Oxygen Not Included [official site] has recently been given an earthy update, bringing both oil and petroleum to the cavernous underbelly of your homely asteroid.
However, if you are a bit of an Over-cautious Oscar, don’t worry, the developers have also added some hazmat suits.
Petroleum Generator: Use the new Oil Refinery to produce Petroleum and fuel your new high-powered Petroleum Generator.