The number of rigs drilling for oil and natural gas in the US has fallen to its lowest level since at least 1940.
New figures from Baker Hughes show energy firms have continued to slash activity amid the deepest energy rout in a generation.
Rigs in the US fell by nine this week to 480, according to the industry data.
Energy firms have been reducing their oil and gas drilling since the selloff in global crude markets began in 2014.
Chevron said earlier this week it would be adding two rigs in the Permian shale of West Texas this year.
Meanwhile, other companies are still reducing rigs, including oil major BP which said it would be reducing its number from five to two as well as laying off more than 200 contracting jobs.