機器
barrel
business
colorful
commodity
construction
crude
depletion
derrick
desert
dunes
economic
economy
energy
environment
equipment
exhaustion
exploration
fossil
fuel
gas
industrial
industry
jack
lever
oil
oilfield
oilwell
opec
petrochemistry
petroleum
plant
power
production
pump
pumping
pumpjack
pumps
red
resource
rig
sand
silhouette
sky
sun
sunset
supply
technology
wealth
well