Oilfield services company Baker Hughes Inc. says the number of rigs exploring for oil and natural gas in the U.S. increased by 11 this week to 1,925.

The Houston firm said Friday in its weekly report that 1,584 rigs were exploring for oil and 340 for gas. One was listed as miscellaneous. A year ago there were 1,767 active rigs.

Of the major oil- and gas-producing states, Texas gained seven rigs, New Mexico and Pennsylvania each gained two and Arkansas, Oklahoma and Wyoming each gained one.

Kansas lost two rigs and Colorado lost one.

Alaska, California, Louisiana, North Dakota, Ohio, Utah and West Virginia were unchanged.