Tax collections taken from oil and gas production in shale-rich Oklahoma last year were about 50 percent higher than 2016, state data show.
According to the federal government, Oklahoma holds about 4 percent of total U.S. petroleum reserves and accounts for about 5 percent of total oil production. Of the 100 largest natural gas fields in the United States, 14 of them are in Oklahoma.
https://www.upi.com/Oklahoma-oil-and-gas-production-tax-receipts-indicate-recovery/2141515412802/
