9,472 meters: China starts drilling 'deepest oil well in Asia' China has made significant breakthroughs in ultra-deep oil and gas exploration, which will help the country boost its crude oil production. Drilling of the "Yuejin 3-3" well, designed to be Asia's deepest oil-and-gas well, has started in the country's northwestern Xinjiang Uygur Autonomous Region. | CCTV