The number of rigs exploring for oil and natural gas in the U.S. decreased by two this week to 993.
That exceeds the 824 rigs that were active this time a year ago.
Houston oilfield services company Baker Hughes reported Thursday that 797 rigs drilled for oil this week and 194 for gas. Two were listed as miscellaneous.
Among major oil- and gas-producing states, Pennsylvania increased by two rigs and Louisiana and Oklahoma each gained one.
Texas lost three rigs and New Mexico, Ohio and West Virginia each decreased by one.