機器
black
business
construction
crude
design
drawing
drill
drilling
energy
environment
equipment
extraction
field
fossil
fuel
gas
gathering
illustration
industrial
industry
mechanical
oil
oilfield
oilrig
orange
outline
patch
petroleum
pipe
pipeline
power
production
promo
pump
pumpjack
recovery
removing
reservoir
resources
rig
silhouette
sillouette
supply
symbol
technology
title
tower
well