** Shares of U.S. oil and gas firms slip, tracking fall in
oil prices
** Brent crude LCOc1 down 1.2% and U.S. West Texas
Intermediate (WTI) crude CLc1 drops 1.1% as traders warily
watched for signs of progress on talks to raise the U.S. debt
ceiling O/R
** Oil majors Chevron Corp CVX.N and ExxonMobil Corp
XOM.N slip 1.1% and 0.1%, respectively
** Oil producers Chesapeake Energy Corp CHK.O , Devon
Energy Corp DVN.N , SM Energy Co SM.N , Callon Petroleum Co
CPE.N and Ovintiv Inc OVV.N fall between 0.2% and 1.3%
** Oilfield services firms Patterson-UTI Energy Inc
PTEN.O , Halliburton Co HAL.N , Baker Hughes Co BKR.O and
SLB SLB.N ease between 0.7% and 1.8%
** Refiners PBF Energy Inc PBF.N , Phillips 66 PSX.N ,
Valero Energy Corp VLO.N and Marathon Oil Corp MRO.N slide
0.2% to 0.9%
** United States Oil Fund LP USO.P dips 0.8% and ProShares
Ultra Bloomberg Crude Oil UCO.P drops 1.7%
(Reporting by Ankit Kumar)
((Ankit.Kumar2@thomsonreuters.com))