西南石油大学学报(自然科学版)

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Adaptability Evaluation of CO2 Gas Injection Development for“Three
Low”Offshore Oil Reservoir

Luo Chengdong   

  1. Bohai Petroleum Institute Tianjin Branch of CNOOC,Tanggu,Tianjin 300452,China
  • Online:2014-06-01 Published:2014-06-01

Abstract:

In view of the“three low”characteristics(i.e.,low resistivity,low oil saturation and low permeability)of Oilfield
in western South China Sea,water injection and energy supplement difficulties exist in the development process due to high
irreducible water saturation and high shale content and strong water sensitivity. Based on laboratory researches and adaptability
evaluations of gas injection of CO2 at home and abroad,and by taking reservoir as an example,laboratory experiment of CO2
gas injection and reservoir numerical simulation are finished,and theCO2 gas injection development adaptability evaluation is
done on this foundation. A comparison among the depletion type development,continuous gas injection and WAG displacement
through numerical simulation,the result shows CO2 gas injection development has good adaptability,and WAG can further
improve the oil recovery of oilfield development.

Key words: low-resistance, low-permeability, numerical simulation, adaptability evaluation