機器
barrel
black
business
construction
crane
crude
danger
depletion
derrick
drill
drilling
energy
environment
equipment
exploration
fuel
gas
gasoline
generation
global
heavy
industrial
industry
large
mining
natural
ocean
oil
oilfield
petrol
petroleum
pipe
pipeline
plant
platform
pollution
power
production
pump
refinery
resource
rig
sea
silhouette
steel
sunset
technology
tower