The number of rigs actively exploring for oil and natural gas in the U.S. increased by six this week to 1,991.
Houston-based drilling product provider Baker Hughes Inc. reported Friday that 1,071 rigs were exploring for oil and 912 for natural gas. Eight were listed as miscellaneous. A year ago this week the rig count stood at 1,650.
Of the major oil- and gas-producing states, Texas gained eight rigs, North Dakota gained six, Colorado gained two and Wyoming gained one.
Louisiana and Pennsylvania each lost four rigs and Alaska, while New Mexico and Oklahoma each lost one.
Arkansas, California and West Virginia were unchanged.
The rig count peaked at 4,530 in 1981. A low of 488 was recorded in 1999.