3d
barrel
blueprint
business
construction
crude
derrick
design
detailed
diesel
drawing
drill
drilling
energy
environment
equipment
exploration
extraction
frame
fuel
gas
gasoline
generation
illustration
industrial
industry
mining
natural
nature
oil
orthography
outline
petroleum
pipe
platform
pollution
power
pump
resource
rig
silhouette
sketch
supply
technology
tower
well
wire frame
wireframe