西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (4): 58-63.DOI: 10.3863/j.issn.1674-5086.2009.04.012

• 石油与天然气工程 • 上一篇    下一篇

黏弹性聚合物驱剩余油饱和度预测的φ函数法

穆文志1 宋考平2 高明2 肖宏伟1   

  1. 1.中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712;2.大庆石油学院教育部提高油气采收率重点实验室,黑龙江大庆163318
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-08-20 发布日期:2009-08-20

THE φ FUNCTION METHOD FOR PREDICTING THE REMAINING OIL BY VISCOELASTIC POLYMER FLOODING

MU Wen-zhi1 SONG Kao-ping2 GAO Ming2 XIAO Hong-wei1   

  1. 1.Research Institute of Exploration and Development,Daqing Oilfield Limited Company,PetrolChina,Daqing Heilongjiang 163453,China;2.MOE Key Laboratory for Enhanced Oil and Gas Recovery,Daqing Petroleum Institute,Daqing Heilongjiang 163318,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-08-20 Published:2009-08-20

摘要: 石炭系断裂十分发育,断裂样式有逆冲、背冲、对冲断裂类型,断裂平面分布具有明显的分区定向性,断裂主要沿NE—SW向、NWW—NEE向、NEE—SWW向、NW—SE向、近EW向5个方向展布。断裂发育时期特征明显, 各期构造运动对石炭系断裂发育及分布的影响程度有较大差别。现今石炭系断裂应是多期构造运动叠加的产物,在地震剖面上通过分析断裂及其相邻地层所具有的反射特征的差别,根据断裂上下地层的变形特征、厚度变化和断裂切割地层年代的差异来判别断裂发育的时期和持续的时段,将石炭系断裂按发育时期进行分离,再现各个主要构造运动期石炭系断裂的平面分布特征。盆地石炭系断裂按主要发育时期可分为海西期断裂、印支期断裂和燕山期—喜马拉雅期断裂。海西期断裂是石炭系发育的主要断裂,海西期发育的断裂多数在后期又继续活动,仅在海西期发育而后期不再活动的石炭系断裂主要分布在盆地腹部地区;印支期发育而后期不再活动的石炭系断裂主要分布在盆地东北缘地区;仅在燕山期—喜马拉雅期发育的石炭系断裂主要分布在盆地东部地区。

关键词: 黏弹性聚合物, 剩余油, φ函数法, 剪切黏度, 拉伸黏度

Abstract: Based on the ideas of a paper named the  function method to predict the remaining oil saturation distribution in water-flooding reservoir,considering the fluid characteristics in polymer flooding reservoir,such as polymer visco-elastic,shear thinning,non reached pore volume,permeability decline coefficient and other factors,on the basis of establishing the mobile plane saturation equation in polymer flooding,the changes of the viscosity of polymer solution and water permeability and the influence for polymer flooding function are analyzed.By using this method and numerical simulation software eclipse,the comparing calculation is carried out,the results show that the difference of polymer concentration distribution between them is small after polymer flooding,the value of the distribution of water saturation calculated with this method is relatively high,which shows that the tensile viscosity caused by the visco-elastic of polymer in the process of flooding acts.It is proved that the method can accurately reflect the flooding situation of the viscoelastic polymer in the formation.

Key words: visco-elastic polymer, remaining oil, φ function method, shear viscosity, tensile viscosity

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