U.S. EIA - In December 2018, U.S. shale and tight plays produced about 65 billion cubic feet per day (Bcf/d) of natural gas (70% of total U.S. dry gas production) and about 7 million barrels per day (b/d) of crude oil (60% of total U.S. oil production). A decade ago, in December 2008, shale gas and tight oil accounted for 16% of total U.S. gas production and about 12% of U.S. total crude oil production.