** S&P 500 Energy index .SPNY up 1.8%, tracking a rise in oil prices O/R
** Brent Crude futures LCOc1 up 1.7% at $66.43/barrel; U.S. West Texas Intermediate crude CLc1 rises 1.8% to $64.52/barrel
** Crude prices rise after U.S. President Donald Trump and Chinese leader Xi Jinping resumed trade talks, raising hopes for growth and stronger demand in the world's two largest economies
** Energy majors Chevron CVX.N and Exxon Mobil XOM.N both rise 1.7%
** APA Corp APA.O, ConocoPhillips COP.N, Devon Energy DVN.N, Valero Energy VLO.N and EOG Resources EOG.N rise between 2.1% and 3.1%; among the top percentage gainers on the energy index
** Oilfield services companies Baker Hughes BKR.O and Halliburton HAL.N gain 1.6% and 2.3%, respectively
** Refiners: Marathon Petroleum MPC.N up 1.6% and Phillips 66 PSX.N rises 1.8%
(Reporting by Sumit Saha in Bengaluru)
((Sumit.Saha@thomsonreuters.com;))