Oilfield services company Baker Hughes Inc. says the number of rigs exploring for oil and natural gas in the U.S. this week declined by 12 to 775.

Houston’s Baker Hughes said Friday that 578 rigs were seeking oil and 197 explored for natural gas. A year ago, with oil prices about double the prices now, 1,929 rigs were active.

Among major oil- and gas-producing states, Texas lost seven rigs, Oklahoma declined by six, Louisiana lost two and North Dakota, Ohio and West Virginia each lost one.

Kansas and New Mexico each gained two rigs and Alaska and Pennsylvania each gained one.

Arkansas, California, Colorado, Utah and Wyoming were unchanged.