摘要
聚合物驱数值模拟需要对大量物理化学现象进行描述,与水驱相比存在很强的特殊性。参考和借鉴水驱数值模拟历史拟合相关方法和聚合物驱油机理研究成果,筛选出聚合物的吸附量、残余阻力系数、聚合物溶液相对黏度、不可及孔隙体积、传导系数、有效地层系数和表皮系数等7个影响聚驱效果的主要特征参数;在对这些参数开展较为详细的敏感性分析基础上,以多种现场实测资料作为约束条件,建立了一套较为系统、有效的多参数约束聚合物驱历史拟合方法。大庆某典型实际区块油藏数值模拟表明,聚合物驱历史拟合精度明显提高,单井含水拟合符合率达到75%。研究结果证明了该聚合物驱历史拟合方法的可行性和有效性。
Due to the need of descriptions on many physical-chemical phenomena,the numerical simulation for polymer flooding has its own particularity compared to that of water flooding.Seven key characteristic parameters impacting on the polymer flooding effects are screened at first referring to the history matching method for water flooding and the mechanism of polymer flooding.These parameters are polymer adsorptive capacity,residual resistance factor,viscosity,inaccessible pore volume,conductivity coefficient,effective formation coefficient and skin factor.Based on the detailed sensitivity analysis on these parameters,a systematic and useful multiple-parameter-constraint history matching method for polymer flooding is established with various field data measured as restraints.The reservoir numerical simulation application in a typical block in Daqing Oilfield indicates that the history matching precision for polymer flooding was obviously improved,and the coincidence rate of single-well water cut was increased to about 75%.The study proved the feasibility and validity of the new history matching method for polymer flooding.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2010年第2期216-219,236,共5页
Petroleum Exploration and Development
基金
国家重大技术装备研制和重大产业技术开发专项:改善高含水油田后期水驱效果技术开发和应用(05-06专项课题)
中国石油天然气股份有限公司科学研究与技术开发项目(06-02A-01-02)
关键词
聚合物驱
三次采油
历史拟合
数值模拟
敏感性分析
polymer flooding
tertiary oil recovery
history matching
numerical simulation
sensitivity analysis
