英文關鍵字
business
clouds
drilling
ecology
economy
energy
environment
equipment
exploration
exploring
extracting
extraction
facility
field
fossil
fracking
fuel
gas
gasoline
hydrofrack
hydrofracking
industrial
industry
jack
machine
machinery
mineral
oil
oilfield
oilwell
old
petroleum
pipe
platform
power
production
pump
pumping
pumpjack
remediation
resource
resources
rig
sands
sky
technology
unit
weather
well
wyoming