Progress and Prospects of Carbon Dioxide Fracturing Technology for Unconventional Oil and Gas Reservoirs
The development of unconventional oil and gas reservoirs has sparked a global oil and gas revolution,and carbon dioxide fracturing technology is expected to become a new and powerful booster to promote this oil and gas revolution.Looking back,after more than 20 years of development,China's carbon dioxide fracturing technology has made significant progress in mechanism research,process design,products development,and field applications.At the current,in the context of CCUS,carbon dioxide fracturing technology has experienced explosive growth in field application due to its significant advantages in energized enhancement and emission assistance,outstanding well production enhancement,and environmental protection advantages of massive water conservation and carbon utilization.However,some important problems and challenges have also been further highlighted.Firstly,the engineering operation capability is insufficient,making it difficult to meet the injection and volume requirements for SRV fracturing operations in unconventional oil and gas reservoirs;The second issue is the high cost of engineering operations and prominent contradictions in the development of benefits.Next,the carbon dioxide fracturing technology will be benchmarked against the SRV fracturing operation mode of unconventional oil and gas reservoirs in order to achieve comparable levels in operation ability and benefit.The key tasks include:acceleration of core technologies upgradation,acceleration of construction of an environmental green demonstration project with carbon dioxide fracturing as the core,covering the entire carbon chain,exploration of a new model of CCUS+carbon dioxide fracturing,evaluation of carbon storage potential of carbon dioxide fracturing,establishment of technical standards,promotion of technological achievements transformation,and industrialization.
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