機器
ayoluengo
burgos
business
construction
crude
derrick
diesel
drill
drilling
ecology
energy
engineering
environment
equipment
exploration
extraction
field
fuel
gas
gasoline
industrial
industry
machines
natural
oil
oil industry
oil refineries
petroleum
pipe
pipeline
plant
platform
pollution
power
production
pump
pumping unit
refinery
resource
resources
rig
silhouette
sky
spain
steel
technology
well