5 years of co2 waterless fracturing in jilin oilfield – what we have learned
semanticscholar(2020)
摘要
Since the first pilot test of CO2 waterless fracturing in 2014, a complete system, including equipment, operation and liquid, has been formed. Twenty-three field tests proved the functions of CO2 waterless fracturing on reservoir energy storage, artificial fracture network and mixed-phase production increase. The effects lead to great water saving and CO2 storage. A unit volume of CO2 has the equivalent effect with 2.4 unit volumes of water-based fracturing liquid on oil production. The final storage rate of CO2 is 76.46%, 30% higher than that of CO2-EOR technology.
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