2010•Inner Mongolia Petrochemical IndustryRequires access

Experiments on CO_2 immiscible flooding in low permeability reservoirs

Cao Jian-bao

Abstract

Displacement effects of CO2 and N2 were compared through long core flooding experiments.Simultaneously,CO2 flooding and water-gas alternative injection were investigated.The results show that CO2 is superior to N2 in gas flooding.Low flooding rate contributes to higher displacement efficiency.Low gas-water ratio obtains better oil recovery.

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Key concepts: Water flooding, Flooding (psychology), Petroleum engineering, Permeability (electromagnetism), Water cut, Displacement (psychology), Environmental science, Chemistry