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CNPC has built the world's largest production base for ultra-deep condensate oil and gas


 Science and Technology Daily, Beijing, March 26 (Reporter Yan Jian) According to the latest news from PetroChina, its Tarim Oilfield successfully developed 14 ultra-deep ultra-high pressure complex condensate gas fields, such as Dina and Tazhong No. 1, and built the world's largest ultra-deep layer. As of the 25th, the condensate oil and gas production base has cumulatively produced 166.6 billion cubic meters of natural gas, 24.77 million tons of petroleum liquids such as condensate and light hydrocarbons, and has become a leader in the development of deep complex condensate gas fields in the world. According to reports, condensate oil and gas is rich in scarce hydrocarbon components such as aromatic hydrocarbons and light hydrocarbons. It is a high-end petrochemical raw material urgently needed in the national military and people's livelihood. The global condensate oil and gas resources are mainly distributed in Central Asia, Russia and North America. The buried depth is more than 1,500 meters to 4,000 meters, which belongs to the middle and shallow atmospheric gas reservoirs. Most of China is a deep condensate gas reservoir with proven reserves. More than 80% of the concentration is concentrated in the Tarim Basin. The high-efficiency development of ultra-deep ultra-high pressure complex condensate reservoirs has no successful experience at home and abroad, and has been considered as a worldwide problem. Since 2008, PetroChina has continued to set up a project to innovate the non-equilibrium phase non-equilibrium phase seepage theory, solve the problem of gas injection gravity overburden prediction and gas enthalpy control, and achieve stable and stable production of condensate; Stress, strong non-homogeneous gas reservoir high-yield area distribution law, innovative ultra-deep ultra-high pressure complex condensate gas reservoir efficient development technology and mode, to achieve effective use of 590 million tons of difficult-to-recover reserves; overcome the development of ultra-deep ultra-high pressure condensate gas field Key engineering and technical bottlenecks such as “cleaning and completion, well integrity, high-pressure long-distance mixed transmission” provide support for industrial scale application. At present, this set of innovative theories and technologies has been promoted in the development of Sinopec and CNOOC condensate gas fields, supporting the development of the Akesai condensate gas reservoir in Kazakhstan, the development of the Warne condensate gas reservoir in North America and the United Arab Emirates. The high-end technical cooperation of the Umshayev offshore project has established China's leading position in the development of deep complex condensate gas fields in the world.