...+ We expect Chile-based oil refiner, ENAP, to continue to post high leverage and volatile free cash flow generation. + We are affirming our '###-' ratings on the company and keeping its 'b' stand-alone credit profile unchanged. + The stable outlook primarily reflects our assessment that there is a "very high" likelihood that Chile's government would provide timely and sufficient extraordinary support to the company in the event of financial distress. SAO PAULO (Standard & Poor's) Sept. 21, 2015--Standard & Poor's Ratings Services affirmed its '###¡' ratings on Empresa Nacional del Petr=leo (ENAP). We also kept the company's 'b' stand-alone credit profile (SACP) unchanged. The outlook on the corporate credit rating remains stable. The ratings on ENAP continue to reflect our opinion that there is a "very high" likelihood that its owner, the Republic of Chile (foreign currency: ##-/Stable/A-1+; local currency: ##/Stable/A-1+) would provide timely and sufficient extraordinary support to the...