Investing.com -- The number of rigs drilling for natural gas in the United States decreased by 2 this week to reach 130, according to data released by oil services firm Baker Hughes on Friday.

Oil drilling rigs increased by 2 to 449 during the week ending September 4.

Horizontal rigs, which are commonly used to extract oil or gas from shale formations, remained unchanged at 535.

By basin, the Permian saw an increase of 1 rig compared to the previous week. The Niobrara basin added 1 rig, while the Haynesville basin declined by 1. The Eagle Ford, Williston, and Utica basins remained unchanged.

By state, Texas added 1 rig, while Pennsylvania lost 1. North Dakota rig counts stayed the same. The Gulf of Mexico rig count decreased by 1.