機器
background
barrel
business
casing
connection
construction
couplings
crude
derrick
drill
drilling
energy
engineering
equipment
exploration
extraction
field
fuel
gas
gasoline
industrial
industry
machinery
manufacturing
metal
mining
oil
oilfield
oilwell
petrochemical
petroleum
pipe
pipeline
platform
pollution
power
production
pump
pumping
refinery
rig
stack
steel
technology
tool
tube
tubing
valve
well