Geological Survey (USGS) assessment of undiscovered oil and gas resources of the central part of the Alaska North Slope and the adjacent state offshore area finds that there is a significant amount of oil and a large amount of gas that remains to be discovered.

U.S. Geological Survey (USGS) assessment of undiscovered
oil and gas resources of the central part of the Alaska North Slope and
the adjacent state offshore area finds that there is a significant amount
of oil and a large amount of gas that remains to be discovered. The assessment
estimates that there are 4.0 billion barrels of oil (BBO), 37.5 trillion
cubic feet (TCF) of natural gas, and 478 million barrels of natural gas liquids
that are undiscovered and technically recoverable. Technically recoverable
resources are the amount of petroleum that may be recovered using current
technology.