摘要
固井封隔系统纵向上密封失效,易导致生产后期出现环空窜流而缩短油气井寿命。为此,研发水泥环纵向水力突破能力评价装置,开展水力突破能力评价实验,以流体打压验窜方式评价固井耦合系统纵向阻挡水力突破效果。分析表明,水力突破压力与水泥环的胶结强度、胶结均匀性和有效封隔长度有关。利用水泥胶结评价技术探测流体窜流通道,揭示水力突破机理,建立了一套固井封隔系统纵向阻挡水力突破能力的评价方法。
In view of the longitudinal seal failure of the cementing sealing and sealing system,the annular channeling flow shortens the life of the oil and gas wells in the later stage of production.Through the research and development of the longitudinal hydraulic breakthrough capacity evaluation device,the hydraulic breakthrough capability evaluation experiment is carried out.Fluid pressure testing mode is used to evaluate longitudinal barrier hydraulic breakthrough effect of cementing coupling system.The results show that the hydraulic breakthrough pressure is related to the cementation strength,cementation uniformity and effective packing length of cementing ring.Cement cementation evaluation technology is helpful to detect fluid channeling channel,and reveal mechanism of hydraulic breakthrough,so a set of evaluation methods of longitudinal blockage hydraulic cementing capacity of cementing packer system are established.
作者
武治强
邢希金
范志利
曹砚峰
楼一珊
WU Zhiqiang;XING Xijin;FAN Zhili;CAO Yanfeng;LOU Yishan(Research Institute of China National Offshore Oilfield Corporation,Beijing 100028,China)
出处
《重庆科技学院学报（自然科学版）》
CAS
2018年第2期12-16,共5页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
"十二五"国家科技重大专项"多枝导流适度出砂技术"(2011ZX05024-003)
关键词
固井
水泥环
试样模型
水力突破
评价方法
cement
sheath
sample model
hydraulic breakthrough
evaluation method
