Oil Derrick & Pumpjack

Both machines extract Crude Oil and Natural Gas from underground deposits when powered. They function similarly to the Automatic Mining Drill, where they drill down using blocks. They stop when encountering an oil deposit and begin to suck it up.

Be warned: if the drill destroys Uranium Ore when drilling, dangerous Radon gas will be released on the surface. This can be prevented either by mining up Uranium ore below the drill beforehand or by covering up the hole to prevent the Radon from escaping.

Oil Derrick
The Oil Derrick extracts Crude Oil and Natural Gas out of deposits directly below the block you place it on, at a slower rate than the Pumpjack. It gives 500mb of oil per deposit.

Pumpjack
The Pumpjack also extracts Crude Oil and Natural Gas out of deposits directly below the block you place it on, at a faster rate than the Oil Derrick, 750mb of oil per deposit (250mb increase over the derrick), and less gas produced. However, it also consumes twice the power.

Usage
Make sure there's actually a deposit under it, then power it. By putting a fuse in the appropriate slot, the gas will be dumped into the air. Be warned, this gas is flammable!