Experimental study of CO_2 mininum miscible flooding pressure in F3 section reservoir in Taixing oilfield

Using thin tube experimental equipment,considering its physical and chemical processes of numerous miscible flood-ing and its mechanical complex,carrying out carbon dioxide injection displacement experiment,Taixing oilfield Xing 1 well reservoir fluids pressure in the process of carbon dioxide flooding,oil recovery and important parameters of phrasechange has been achieved,which determined the minimum miscible pressure is 22. 11 MPa.