The culture period of PetroChina is 1 to 3 months. According to the query BOSS recruitment display. It takes a long time for PetroChina to train safety knowledge, fire prevention and drills. And the training period is different according to everyone's understanding ability, generally 1-3 months. The full name of China Petroleum is China Petroleum and Natural Gas Group Co., Ltd., which was reorganized and established on 10/999165438. It is the largest producer and seller of oil and gas in China, one of the largest state-owned enterprises in China and one of the largest oil companies in the world. China Petroleum is committed to developing into a competitive international energy company and one of the important producers and sellers of petroleum and petrochemical products in the world.