英文關鍵字
aerial
carbon
checking
collar
crew
day
drillstring
energy
engineer
factory
field
fuel
gas
gear
generation
geological
geology
going
hydro
hydrocarbon
industrial
industry
inspecting
labourer
men
natural
oil
oilfield
oilmen
people
petroleum
pipe
pipeline
power
pump
servicing
small
station
summer
supply
team
teamwork
technology
view
well
work
worker
workers
working