PetroChina has lately discovered an ultra-large gas field in Ih Ju League of Inner Mongolia, with over 500 billion cubic meters of natural gas estimated, equivalent to an ultra-large oilfield with a reserve amount of 500 million tons of oil.

The gas field, as reported, is predicted to have a perspective proven reserve of over 700 billion cubic meters of natural gas, to be the largest in China and one of the world's biggest.

A reserve of 220.4 billion cubic meters of natural gas was reported last year. By now, 8 wells having been completed, with a daily output of 600,000 cubic meters of natural gas and the highest of 1.2 million cubic meters by a single well, thereby winning Erdos Basin the fame with the largest gas supply in China.

(People's Daily 01/22/2001)