機器
business
construction
crude
derrick
drill
drilling
electricity
energy
equipment
extraction
flat
fossil
fuel
gas
gasoline
geology
hydraulic
icon
industrial
industry
isolated
jack
natural
nonrenewable
object
oil
oilfield
petrol
petroleum
pipe
pipeline
piping
pollution
power
pulley
pump
pumpjack
refinery
rig
shadow
sign
slick
spill
steel
supply
technology
well
white