SANTIAGO - Chile fought Sunday to halt the advance of a wildfire that has consumed 30,000 acres of a national park that is one of the jewels of Patagonia, officials said Sunday. High winds have fanned the blaze, thwarting an international effort that will soon be comprised of specialist fire-fighting teams from Uruguay and neighboring Argentina, as well as Chilean soldiers, planes and helicopters. Torres del Paine National Park is a 2,400-square-kilometer paradise of granite-peaked mountains, natural Andean forests, Patagonian steppe and turquoise lakes deep in southern Chile.