Optimal Design of Heavy-oil Chemical-assisted Steam Drive in Jinlou Oilfield

The 2-3 members of Eh4 in Region 7 of Jinlou Oilfield belonged to general heavy oil reservoirs,after many years of production,wells were produced at mid-high stages and pressure was low in the wells with high production depletion and steam channeling,production effect was poor and chemical-added steam soak was used at the mid-late stages of steam soak,and deep study of the economic use of the technique was not carried out.In combination with the technical application in Henan Oilfield,a 3D geologic model is established and numerical simulation is used for optimizing the design of chemical-added steam drive,it provides a basis for enhancing oil recovery of heavy oil reservoirs.