機器
barrel
blue
company
concept
derrick
drill
drilling
ecology
energy
environment
equipment
europe
extraction
field
fossil
fuel
gas
gasoline
generation
industry
jack
lever
mining
natural
nobody
oil
outdoor
petrochemical
petroleum
pipe
pipeline
plant
pollution
power
production
pump
refineries
renewable
resources
rig
rigs
sky
spain
supplies
technology
well
wells
windmill