機器
barrel
blue
business
cloud
construction
crude
crude oil
derrick
drill
drilling
energy
environment
equipment
exploration
extraction
field
fossil
fuel
gas
gas station
generation
industrial
industry
jack
natural
nature
oil
oil pump
oilfield
orange
outdoor
petroleum
pipe
pipeline
plant
platform
pollution
power
pump
resource
rig
silhouette
sky
steel
sun
sunrise
sunset
technology
well