Aiming at the problem of gas channeling during CO2 injection in Jiangsu Oilfield,a fluorine-free and environmentally-friendly gas-soluble foam channeling sealing agent was developed according to the characteristics of the reservoir.Core modeling experiments optimized the process parameters such as foam sealing channeling system,injection rate,injection amount,optimal gas-liquid ratio,etc.Combined with the domestic and foreign practical experience of the CO2 displacement foam sealing channeling process,the injection process,such as slug combination,is optimized.The CO2 flooding foam sealing channeling technology suitable for Jiangsu Oilfield was successfully applied in well S24,and the oil increase effect was achieved at a stage.
CO2 floodingfoam sealing channelinghigh-temperature and low-permeabilityJiangsu Oilfield
NETL
NSTL
维普
万方数据
