Number of active U.S. drilling rigs up this week

HOUSTON, Jan. 13 (Xinhua) -- The number of active drilling rigs in the United States stood at 775 this week, up by three from the previous week and up by 174 from the same time last year, according to the weekly data released Friday by Houston-based oilfield services company Baker Hughes.

These active drilling rigs included 623 oil rigs operating in the U.S. oil fields, up by five from the previous week, 150 gas