** S&P 500 energy sector .SPNY rises 0.7%, tracking crude prices
** Brent crude LCOc1 up 1% at $72.72/barrel and U.S. West Texas Intermediate crude CLc1 up 1.1% at $69.74/barrel
** Both on track for weekly gain due to output disruptions in U.S. Gulf of Mexico after Hurricane Francine forced evacuation of production platforms
** Energy majors Exxon Mobil XOM.N and Chevron CVX.N gain 0.4% and 1%, respectively
** Phillips 66 PSX.N, SLB SLB.N, Diamondback Energy FANG.O and APA Corp APA.O rise between 1% and 1.7%
** Shares of Marathon Petroleum MPC.N climb 2.1%, the top pct gainer on energy index
(Reporting by Vallari Srivastava in Bengaluru)