** Shares of oil and gas companies fall premarket, tracking
declines in crude prices O/R
** Brent crude futures LCOc1 down 2.1% at $75.87/bbl and
U.S. West Texas Intermediate crude futures CLc1 down 1.4% at
$72.45/bbl
** Prices decline as sluggish economic growth in China, the
world's biggest crude importer, increased demand concerns that
overshadowed the impact of halted production and exports from
Libya
** Energy majors Exxon Mobil XOM.N and Chevron CVX.N
drop ~1% and 0.8%, respectively
** Shares of Murphy Oil MUR.N , Marathon Oil MRO.N ,
Conocophillips COP.N and APA Corp APA.O fall nearly 1%;
Diamondback Energy FANG.O slips 1.1%
** Oilfield services firms SLB SLB.N and Halliburton
HAL.N fall 0.9% and 1.1%, respectively
** Refiners Phillips 66 PSX.N and Valero Energy VLO.N
both down 1%
(Reporting by Vallari Srivastava in Bengaluru)
((Srivastava.Vallari@thomsonreuters.com;))