abstract
barrel
black
business
chemical
concept
container
crude
design
diesel
drop
drum
element
emblem
energy
environment
factory
flat
fuel
gallon
gas
gasoline
graphic
icon
illustration
industrial
industry
isolated
liquid
logo
lubricant
market
metal
natural
oil
petrol
petroleum
pollution
power
refinery
sign
simple
steel
storage
symbol
tank
trade
white