| 超临界二氧化碳压裂技术研究进展 |
| 投稿时间：2018-07-31 修订日期：2018-07-31 点此下载全文 |
| 引用本文：陈晨,朱颖,翟梁皓,等.超临界二氧化碳压裂技术研究进展[J].钻探工程,2018,45(10):21-26.CHEN Chen,ZHU Ying,ZHAI Liang-hao,et al. Research Progress on Supercritical Carbon Dioxide Fracturing Technology[J]. Drilling Engineering, 2018,45(10):21-26. |
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| 基金项目:国家自然科学基金面上项目“高压低温水射流作用下海底天然气水合物储层破岩过程与机理研究”（编号：41672361）；省校共建项目，新能源专项“油页岩原位转化工程共性关键技术研究”（编号：SXGJSF2017-5）；省科技厅项目（编号：20160204011SF） |
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| 中文摘要:对于低渗透油页岩矿藏的开发，超临界二氧化碳（SC—CO2）压裂技术有效规避了水力压裂会引起的地层伤害、诱发地震和环境污染等问题，且由于其在起裂压力、沟通微裂缝、形成复杂缝网上的优势，是目前一项热门的无水压裂技术。本文详细介绍了SC—CO2压裂技术的技术特点和近年来SC—CO2压裂的实验与数学模型研究。从裂缝扩展规律性实验、在SC—CO2作用下的岩性变化实验、SC—CO2压裂液体系的研制以及SC—CO2流体携砂流动、井内温度场、裂缝起裂扩展数学模型的相关研究中，探讨目前SC—CO2压裂技术的研究进展与不足，并在增粘剂的设计、裂缝有效性的评价、填砂裂缝网络提高油页岩储集层传热和渗流能力等方面的研究提出了建议，对SC—CO2压裂技术的未来发展具有参考意义。 |
| 中文关键词:压裂技术 超临界二氧化碳 无水压裂 油页岩 |
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| Research Progress on Supercritical Carbon Dioxide Fracturing Technology |
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| Abstract:For the exploitation of low-permeability oil shale deposits, supercritical carbon dioxide (SC-CO2) fracturing technology avoids the formation damage, possible induced earthquakes and environmental pollution caused by hydraulic fracturing effectively and becomes a hot waterless fracturing technology because of its advantages of reducing initiation pressure, communicating micro cracks and developing complex fracture network. This paper introduced in detail the technical characteristics and the experimental and mathematical model studies of SC—CO2 fracturing in recent years. From the view of experimental studies about crack propagation mechanism, experimental studies about lithologic change with the interaction of SC—CO2, the development of SC—CO2 fracturing fluid and mathematical model studies about the flowing rules of sand carrying SC—CO2, temperature of wellbore, crack initiation and propagation mechanism, the research progress and deficiency of SC—CO2 fracturing technology were discussed and suggestions were put forward about the design of tackifier, effective evaluation of fracture and enhancement of oil shale reservoir heat transfer and seepage capacity caused by packed fracture, providing a reference for its development. |
| keywords:fracturing technology supercritical carbon dioxide waterless fracturing oil shale |
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