Daqing Oilfield is the largest oil region in China since 1960s. Located in the middle of Songliao Plain, Binzhou Railway runs through the middle of the oilfield. Among them, Daqing Oilfield is a large anticline structural reservoir with Lamadian, Sarthou and Xingshugang high points from north to south. The reservoir is Mesozoic continental Cretaceous sandstone with a depth of 900m ~ 1200m and medium permeability. Crude oil is mainly paraffin, which has the characteristics of high wax content (20% ~ 30%), high freezing point (25℃ ~ 30℃), high viscosity (surface viscosity 35) and low sulfur content (below 0. 1%). The specific gravity of crude oil is 0.83 ~ 0.86. 1959, the first oil well was drilled in Gaotaizi Oilfield. 1March, 960, Daqing Oilfield was put into development and construction. Since 1976, the annual crude oil output has been more than 50 million tons, and the oil output of 1983 is 52.35 million tons. The discovery and development of Daqing oil region confirmed that continental strata can generate oil and form large oil fields, thus enriching and developing the theory of petroleum geology, changing the backward appearance of China's petroleum industry and having a great impact on the industrial development of China.

Daqing Oilfield Co., Ltd. is a wholly-owned subsidiary of China Petroleum and Natural Gas Co., Ltd., and China Petroleum and Natural Gas Co., Ltd. is a state-owned holding mega-enterprise whose main business is oil and natural gas exploration and development. 1At the end of 999, Daqing Oilfield was restructured and separated. On June 2000, 65438+1 October1,Daqing Oilfield Co., Ltd. and China Oil and Gas Co., Ltd. were officially registered and listed in the United States and Hongkong, with a registered capital of 47.5 billion yuan. At present, the total assets are 65438+0089 million yuan, and the total number of employees is 90427. Since its establishment in 2000, the company has produced 294 million tons of crude oil and 654.38 billion cubic meters of natural gas, with an average annual oil-gas equivalent of over 50 million tons. The sales revenue is 584 billion yuan, and the total profit and tax is 479.5 billion yuan, ranking first among the top 100 taxpayers in China year after year.