摘要
储层纵向非均质性是影响油田开发效果的重要因素,当前普遍采用的是测井、录井、岩心实验等静态资料相结合的数理统计方法,只能识别规模较大、差异明显的层间差异;且预测结果严重依赖于数据的品质和数量,难以满足满开发动态的需求。根据耦合流动的基本原理,提出了应用流动电位的储层纵向非均质性评价方法,定性评价层间及层内由渗透率变化及隔夹层分布而产生的流动能力差异。根据实际油藏的地质特征,建立了5种不同类型的非均质性模型,模拟计算了随生产过程而产生的电位分布差异。结果显示该方法对渗透率层间差异引起的注水"指进"现象有较好反映,还能够显示隔夹层的存在位置,具有成为新型评价方法的潜力。
Formation heterogeneity is the major factor which affect reservoir development. At present from drilling core and logging data combined with geological science methods, it can be properly evaluated. However limited by inadequate datum and short insight distance, also the traditional static electrical feature measurement could not meet the demand of dynamic process. In recent years, international geophysicist focus on the advantage of coupling flow effect in exploration and exploitation for petroleum industry. Theoretically how to predict permeability variation and interlayer distribution in vertical by streaming potential data acquired by permanent electrode loaded on intelli- gent well were explained, hydraulic and electrical flow coupling numerical model were established, 5 different con- ceptional model on which simulated electrical potential were designed during one production and one injection well production process. Result shows that this method can not only reflect permeability by ＂finger effect＂ by injected water, also have indications of interlayer location, and have the potential to become a new evaluation method.
出处
《科学技术与工程》
北大核心
2016年第28期153-157,共5页
Science Technology and Engineering
基金
十三五国家科技重大专项(2016ZX05011-002)资助
关键词
流动电位
耦合流动
非均质预测
隔夹层预测
steaming potential coupling flow heterogeneity prediction interlayer prediction
