機器
blog
blue
brown
business
cartoon
color
corporate
derrick
diesel
drill
drilling
drop
drum
energy
equipment
extraction
flammable
fuel
game
gas
gasoline
icon
illustration
industrial
industry
isolated
jack
oil
oilfield
parchment
petrochemical
petrol
petroleum
pictogram
pipe
pipeline
pollution
power
pump
pumpjack
red
sign
simple
single
site
tower
web
white