** U.S. oil and gas companies fall premarket, tracking weaker crude prices O/R

** Brent crude futures LCOc1 were down $3.82, or 5.3%, at $67.66 a barrel; U.S. West Texas Intermediate crude CLc1 fell $3.75, or 5.5%, to $64.76 per barrel

** Oil prices hit a two-week low on Tuesday after Israel accepted a U.S.-backed ceasefire with Iran, easing Middle East supply fears O/R

** Oil majors Exxon Mobil XOM.N and Chevron CVX.N down 1.2% and 1%, respectively

** Shares of APA Corp APA.O fall 1.1%, Diamondback Energy FANG.O down more than 1%

** Occidental Petroleum OXY.N and Devon Energy DVN.N 1.4% lower

** Oilfield services provider Halliburton HAL.N and SLB SLB.N both marginally down 0.1% and Baker Hughes BKR.O slides 1.1%

(Reporting by Rashika Singh in Bengaluru)

((Rashika.Singh@thomsonreuters.com;))