摘要
利用新建立的包含若干具有明确物理意义的特征参数的聚合物驱增油动态定量表征模型,将增油曲线的刻画归结为增油初始时累注量、对应最大增油量时累注量、增油期结束时累注量、最大增油量等4个特征参数。在油藏数值模拟研究的基础上,讨论了包括油藏静态参数、动态参数以及聚合物性质参数等15个影响聚合物驱增油动态的因素及其影响规律。研究结果表明,影响聚合物驱增油动态和提高采收率值的主要敏感因素包括渗透率变异系数、地层水矿化度、地层温度、注聚前含水、注聚用量、注入速度、注采比、渗透率下降系数、吸附等。
A novel quantitative characterization model of oil increment performance for polymer flooding is developed to divide the oil increment curve into four characteristic parameters, that is , cumulative injection at the initial time of oil increment, the corresponding time of maximum oil increment value, the cumulative increment at the end of oil increment period and maximum oil increment. In this model, several characteristic parameters with specific physical meanings are included. Based on reservoir numerical simulation, fifteen influential factors concerning oil increment performance in polymer flooding and their influence rules are discussed. These factors involve reservoir static and dynamic parameters and polymer property parameters. The results show that the sensitive factors, which include variation coefficient of permeability, formation water salinity, reservoir temperature, polymer injection opportunity, polymer injection amount, injection rate, injection-production ratio, permeability reduction factor and absorption,have a full impact on the oil increment performance in polymer flooding and enhanced oil recovery.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2007年第1期118-121,共4页
Journal of Oil and Gas Technology
基金
中国石油化工集团股份公司科技攻关项目(P03002)。
关键词
聚合物驱
生产动态
模型
提高采收率
影响因素
polymer flooding
production performance
model
enhanced oil recovery
influential factor
