機器
big
blue
business
construction
crane
crude
derrick
dig
drill
drilling
economy
energy
engineering
equipment
exploration
facility
field
fuel
gas
gasoline
hard
heavy
hole
industrial
industry
jack
land
natural
oil
oilfield
onshore
petrochemical
petroleum
power
production
pump
refinery
rig
shale
site
sky
steel
strike
sunset
technology
tool
tower
unit
well