弹性微球通过油层孔隙的临界粒径
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摘要
根据微球在孔隙中的受力情况,建立简化的力学模型,计算出通过孔喉的微球的临界粒径。结果表明,当微球物性参数不变时,微球临界粒径随孔隙孔径线性增大;当孔隙孔径不变,只改变微球物性参数中的弹性模量时,微球临界粒径随微球弹性模量的增大而减小;当孔隙孔径不变,只改变微球物性参数中的极限应力时,微球临界粒径随极限应力的增大而增大。
Based on the analysis of stress distribution of microspheres in the pore,to establish a simplified mechanics model,calculate of the critical particle size of microspheres through the pore.Results show that when the microspheres at constant physical parameters,the critical particle size microspheres increases with the pore aperture linear;when the pore aperture unchanged,only change the elastic modulus of the physical properties of the microspheres,critical particle size microspheres decreases with increasing of microsphere elastic modulus;when the pore aperture remains the same,only changing the ultimate stress of physical properties of the microspheres,critical particle size microspheres increases with the ultimate stress.
Based on the analysis of stress distribution of microspheres in the pore,to establish a simplified mechanics model,calculate of the critical particle size of microspheres through the pore.Results show that when the microspheres at constant physical parameters,the critical particle size microspheres increases with the pore aperture linear;when the pore aperture unchanged,only change the elastic modulus of the physical properties of the microspheres,critical particle size microspheres decreases with increasing of microsphere elastic modulus;when the pore aperture remains the same,only changing the ultimate stress of physical properties of the microspheres,critical particle size microspheres increases with the ultimate stress.
引文
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[2]马海霞,林梅钦,李明远,等.交联聚合物微球体系性质研究[J].应用化工,2006,35(6):454-457.
[3]黄继新,彭仕宓,黄述旺.河流相储层建模中测井和地震资料整合研究[J].中国矿业大学学报,2007,36(1):126-131.
[4]雷光伦,李文忠,贾晓飞,等.孔喉尺度弹性微球调驱影响因素[J].油气地质与采收率,2012,19(2):41-43.
[5]Lei G L,Li L L,Nasr-El-Din H A.New gel aggregates to improve sweep efficiency during water flooding[J].Society of Petroleum Engineers,2011,14(1):120-128.
[6]马敬昆,蒋庆哲,王永宁,等.交联聚合物微球的制备及岩心封堵性能研究[J].石油钻采工艺,2010,32(2):84-88.
[7]张增丽.孔喉尺度聚合物弹性微球合成及调驱性能研究[D].青岛:中国石油大学,2008.
[8]刘庆旺,范振中,王德金.弱凝胶调驱技术[M].北京:石油工业出版社,2003:161.
[9]Eslick J C,Ye Q,Park J,et al.Computational molecular design framework for crosslinked polymer networks[J].Computers and Chemical Engineering,2009,33:954-963.
[10]庞占喜,刘慧卿,刘喜林.多孔介质中流动泡沫的压力分布计算[J].化学工程,2009,37(6):20-36.
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