** U.S. oil and gas firms make slight gains in premarket
trade, tracking the rise in crude oil prices
** Oil prices rise on Friday in thin market liquidity,
closing a week marked by worries about Chinese demand and
haggling over a Western price cap on Russian oil urn:newsml:reuters.com:*:nL1N32L036
** Brent crude LCOc1 up 1.6% at $86.71 a barrel, while
U.S. West Texas Intermediate crude CLc1 advances 2.3% to
$79.76
** Oil majors Exxon Mobil Corp XOM.N and Chevron Corp
CVX.N gain 0.7% and 0.8%, respectively
** Oil producers Occidental Petroleum Corp OXY.N , Marathon
Oil Corp MRO.N , Devon Energy Corp DVN.N and APA Corp
APA.O climb between 1% and 1.5%
** Oilfield services firms SLB NV SLB.N , Halliburton Co
HAL.N , and Transocean Ltd RIG.N up 1%-1.5%
** ETFs - United States Oil Fund LP USO.P up 2.6% and
ProShares Ultra Bloomberg Crude Oil UCO.P up 4.5%
(Reporting by Sourasis Bose in Bengaluru)
((Sourasis.bose@thomsonreuters.com))