** U.S. energy firms fall premarket as crude oil prices slip
more than $2 ahead of the Federal Reserve meeting
** Concerns about China's fuel demand growth and rising
Russian crude supply also weigh
** Brent crude futures LCOc1 slide 2.5% to $72.88 a
barrel, while U.S. West Texas Intermediate crude CLc1 falls
2.6% to $68.53 per barrel
** Both benchmarks posted their second straight weekly
declines last week as disappointing Chinese economic data offset
a boost in prices from Saudi Arabia's pledge to cut production
** Producers PDC Energy PDCE.O , Occidental Petroleum
OXY.N , Exxon Mobil XOM.N and Chevron CVX.N fall between
0.9% and 1.4% premarket
** Oil-field services firms Halliburton HAL.N and SLB
SLB.N slip 1.5% and 1.7%, respectively
(Reporting by Arshreet Singh)
((Twitter: https://twitter.com/Arshreets))