Research On CO₂ Pipeline And Liquid Separation Project Of Qilu Petrochemical To Zhenglizhuang Oilfield

In recent years,the world’s governments and research institutions in research of CO₂ resource comprehensive utilization.The theory and practice show that CO₂ flooding is one of the methods to improve oil recovery,especially for low permeability oil field.CO₂ flooding is an effective method to improve the recovery of low permeability reservoir. Low permeability reservoirs of Shengli oil field is very rich,so there is urgent demand to develop low permeability reservoirs.Therefore,Shengli Oilfield take the development of low permeability reservoir with CO₂ as an important measure to improve the recovery efficiency.In this paper,I carried on the design research.in CO₂ pipelines and liquefied separation engineering.The pipeline starts from the Qilu first station, ending of the Gaoqing terminal station, full-length 75 km.This project slected gas transportation,and its design input is 621,000 tons per year,the design pressure is 4.4MPa.The Gaoqing terminal station liquefies CO₂ after receiving and Separates by cryogenic distillation.