機器
background
barrel
black
blue
crude
derrick
drill
drilling
energy
environment
equipment
exploration
extraction
facility
field
fuel
gas
gasoline
geology
heavy
industrial
industry
jack
landscape
metal
mining
nature
oil
oilfield
oilwell
petroleum
pipe
pipeline
platform
pollution
power
production
pump
pumpjack
refinery
rig
silhouette
sky
sun
sunrise
sunset
supply
well
work