中国CO_2驱油与埋存技术及实践
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摘要
系统阐述近年来中国CO_2驱油和埋存理论及技术的最新进展,并提出了下一步发展方向。基于陆相油藏地质特征,发展和形成了5个方面的理论和关键技术:①丰富了对陆相油藏CO_2与原油间的组分传质特征、微观驱油和不同地质体埋存机理的认识;②形成了CO_2驱油藏工程参数设计、注采调控、开发效果评价等油藏工程技术系列;③发展了CO_2分层注气工艺、高效举升工艺、井筒腐蚀在线监测与防护等采油工程技术系列;④创新了CO_2捕集、管道输送、地面注入、产出气循环注入等地面工程技术系列;⑤形成了CO_2驱油藏监测、安全环保评价等配套技术系列。在此基础上提出了下一步技术发展方向:①突破低成本CO_2捕集技术,提供廉价的CO_2气源;②改善CO_2与原油之间混相的技术,提高驱油效率;③研发提高CO_2波及体积技术;④研制更高效举升工具和技术;⑤加强CO_2埋存监测基础理论研究和关键技术的攻关。吉林油田的实践表明CO_2驱油与埋存技术在中国具有广阔的应用前景。图4表5参36
The latest advancement of CO_2 flooding and sequestration theory and technology in China is systematically described, and the future development direction is put forward. Based on the geological characteristics of continental reservoirs, five theories and key technologies have been developed:(1) Enriched the understandings about the mass transfer characteristics of components between CO_2 and crude oil in continental reservoirs, micro-flooding mechanism and sequestration mechanism of different geological bodies.(2)Established the design method of reservoir engineering parameters, injection-production control technology and development effect evaluation technology of CO_2 flooding, etc.(3) Developed a series of production engineering technologies such as separated layer CO_2 injection technology, high efficiency lifting technology, on-line wellbore corrosion monitoring and protection technology.(4) Innovated a series of surface engineering technology including CO_2 capture technology, pipeline CO_2 transportation, CO_2 surface injection, and production gas circulation injection, etc.(5) Formed a series of supporting technologies including monitoring, and safety and environmental protection evaluation of CO_2 flooding reservoir. On this basis, the technological development directions in the future have been put forward:(1) Breakthrough in low-cost CO_2 capture technology to provide cheap CO_2 gas source;(2) Improve the miscibility technology between CO_2 and crude oil to enhance oil displacement efficiency;(3) Improve CO_2 sweeping volume;(4) Develop more effective lifting tools and technologies;(5) Strengthen the research of basic theory and key technology of CO_2 storage monitoring. CO_2 flooding and sequestration in the Jilin Oilfield shows that this technology has broad application prospects in China.
The latest advancement of CO_2 flooding and sequestration theory and technology in China is systematically described, and the future development direction is put forward. Based on the geological characteristics of continental reservoirs, five theories and key technologies have been developed:(1) Enriched the understandings about the mass transfer characteristics of components between CO_2 and crude oil in continental reservoirs, micro-flooding mechanism and sequestration mechanism of different geological bodies.(2)Established the design method of reservoir engineering parameters, injection-production control technology and development effect evaluation technology of CO_2 flooding, etc.(3) Developed a series of production engineering technologies such as separated layer CO_2 injection technology, high efficiency lifting technology, on-line wellbore corrosion monitoring and protection technology.(4) Innovated a series of surface engineering technology including CO_2 capture technology, pipeline CO_2 transportation, CO_2 surface injection, and production gas circulation injection, etc.(5) Formed a series of supporting technologies including monitoring, and safety and environmental protection evaluation of CO_2 flooding reservoir. On this basis, the technological development directions in the future have been put forward:(1) Breakthrough in low-cost CO_2 capture technology to provide cheap CO_2 gas source;(2) Improve the miscibility technology between CO_2 and crude oil to enhance oil displacement efficiency;(3) Improve CO_2 sweeping volume;(4) Develop more effective lifting tools and technologies;(5) Strengthen the research of basic theory and key technology of CO_2 storage monitoring. CO_2 flooding and sequestration in the Jilin Oilfield shows that this technology has broad application prospects in China.
引文
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[18]刘晓蕾,秦积舜,韩海水,等.C16+正构烷烃-二氧化碳体系的相变边界变化规律[J].石油勘探与开发,2017,44(1):104-109.LIU Xiaolei,QIN Jishun,HAN Haishui,et al.Multiphase boundary of C16+heavy n-alkanes and CO2 systems[J].Petroleum Exploration and Development,2017,44(1):104-109.
[19]廉黎明,秦积舜,杨思玉,等.用于CO2-原油体系的改进型黏度预测模型[J].石油勘探与开发,2014,41(5):591-596.LIAN Liming,QIN Jishun,YANG Siyu,et al.An improved viscosity model for CO2-crude system[J].Petroleum Exploration and Development,2014,41(5):591-596.
[20]任邵然,张莉,张亮.CO2地质埋存:国外示范工程及其对中国的启示[J].中国石油大学学报(自然科学版),2010,34(1):93-98.REN Shaoran,ZHANG Li,ZHANG Liang.Geological storage of CO2:Overseas demonstration projects and its implications to China[J].Journal of China University of Petroleum(Edition of Natural Science),2010,34(1):93-98.
[21]沈平平,陈兴隆,秦积舜.CO2驱替实验压力变化特性[J].石油勘探与开发,2010,37(2):211-215.SHEN Pingping,CHEN Xinglong,QIN Jishun.Pressure characteristics in CO2 flooding experiments[J].Petroleum Exploration and Development,2010,37(2):211-215.
[22]袁士义.二氧化碳减排、储存和资源化利用的基础研究论文集[M].北京:石油工业出版社,2014.YUAN Shiyi.Fundamental research of emission reduction,storage and resource utilization of carbon dioxide[M].Beijing:Petroleum Industry Press,2014.
[23]STALKUP F I.混相驱开发油田[M].北京:石油工业出版社,1989.STALKUP F I.Oilfield development by miscible flooding[M].Beijing:Petroleum Industry Press,1989.
[24]高建,马德胜,杨思玉,等.低渗透砂岩油藏单砂体内部相对高渗透段定量识别[J].中国石油大学学报(自然科学版),2012,36(6):13-18.GAO Jian,MA Deshen,YANG Siyu,et al.Quantitative identification of relatively high permeability segments within a single sand body in a low permeability sandstone reservoir[J].Journal of China University of Petroleum(Edition of Natural Science),2012,36(6):13-18.
[25]迟杰,鞠斌山,吕广忠,等.CO2混相与非混相共同驱极限井距计算方法[J].石油勘探与开发,2017,44(5):771-778.CHI Jie,JU Binshan,LYU Guangzhong,et al.A computational method of critical well spacing of CO2 miscible and immiscible concurrent flooding[J].Petroleum Exploration and Development,2017,44(5):771-778.
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