機器
advantage
barrel
black
business
chink
construction
craft
crude
diesel
domination
drilling
ecology
economy
energy
equipment
extraction
facility
fuel
gas
income
industrial
industry
jack
mineral
money
oil
oilfield
old
pipe
pipeline
platform
power
profit
pump
raw
rich
rig
rocking
shale
silhouette
snow
storage
support
technology
tool
unit
winter
work