Study on Adaptability of Nitrogen Foam to Control Profile in Offshore Oilfield

ZHANG Zhongping, HAN Hao, SHEN Jing, HE Xu


Water breakthrough is usually occurred during water flooding process as the high porosity and permeability features of offshore oilfield. The adaptability of nitrogen foam improve profile are evaluated based on laboratory experiment and numerical simulation. The effects of formation rhythmicity, permeability ratio, formation dip, layer thickness and crude oil viscosity on profile control by nitrogen foam are investigated. Study results indicated that nitrogen foam is an efficiency approach to enhance the oil recovery of heterogeneity reservoir by block the water channel and improve the profile. Meanwhile, the application field and appropriate conditions of nitrogen foam are summarized which can be used in the optimization of nitrogen foam in offshore oilfield.
Key words: Nitrogen foam; Resistance factor; Numerical simulation; Formation rhythmicity; Permeability ratio


Nitrogen foam; Resistance factor; Numerical simulation; Formation rhythmicity; Permeability ratio

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