Energy stocks were declining premarket Friday, with the State Street Energy Select Sector SPDR ETF (XLE) 0.4% lower.
The United States Oil Fund (USO) was down 2.5% and the United States Natural Gas Fund (UNG) was 3% higher.
Front-month US West Texas Intermediate crude oil was 1.2% lower at $87.86 per barrel at the New York Mercantile Exchange. Global benchmark North Sea Brent crude oil lost 1.5% to $92.27 per barrel, and natural gas futures were up 5% at $3.04 per 1 million British Thermal Units.
Chevron's (CVX) oil production at its Tengiz field in Kazakhstan dropped significantly on Tuesday after an accident, Reuters reported, citing industry sources. Shares of Chevron were down 0.4% pre-bell.