On June 23rd, 2003,65438+February 23rd, Luojiazhai, Gao Qiao Town, Kaixian County, Chongqing City, a rare blowout accident occurred in the history of gas well blowout in China and even in the world. It is a major safety accident with the largest number of deaths and the heaviest losses in Chongqing's history since the founding of the People's Republic of China. PetroChina takes 65438+February 23rd every year as the warning day for production safety.