抽油机
Pumpjacks mine the crude oil from the oil fields, and let you carry it by pipe as seen in the Liquid network/0.9
Pumpjack
Crude oil is extracted by pumpjacks from oil fields. Each oil field can be covered by a pumpjack only at one spot. The pumpjack will then output an amount of crude oil dependent on field's yield (1 oil unit for 100% yield) per second.
Extracting oil lowers the field's yield with the speed depending on oil extracted (thus bigger fields will deplete faster) to what seems to be a lower limit of 10%.
Pumpjack's output tile location is fixed relative to its orientation.
Tips
If oil fields are depleted (to the minimum of 10%) speed Modules are a good option to raise the pumpjacks output. With two Speed module 3's the output doubles from 0.1 to 0.2 and even more when using additionaly Basic beacons.