聚合物驱后油层优势渗流通道识别与治理

发布时间：2018-05-20 07:44

本文选题：聚驱后油层 + 优势渗流通道　；参考：《大庆石油地质与开发》2017年04期

【摘要】：聚驱后油层剩余油分布高度零散,空间上中低水洗部位与优势渗流通道交互分布,开采难度大,经济效益差。如何识别和治理优势渗流通道是目前聚驱后油层开发中急需解决的问题。以大庆油田萨南开发区一类油层某区块为例,通过定义有效渗透率、含油饱和度界限,结合动态资料识别并验证优势渗流通道,描述其动态特征,与大庆长垣油田其他开发区聚驱后油层优势渗流通道发育特征基本一致。根据优势渗流通道的发育及动态特征的差异性,明确调整方向,采取黏度优化、分层、堵水、调剖等治理方法,取得了较好现场应用效果,为聚驱后油层优势渗流通道的识别与治理提供了依据。
[Abstract]:After polymer flooding, the distribution of remaining oil in reservoir is highly scattered, the distribution of middle and low water washing position in space is interacted with the dominant seepage channel, the exploitation is difficult and the economic benefit is poor. How to identify and control the dominant seepage channels is an urgent problem in reservoir development after polymer flooding. Taking a certain block of a class oil layer in Sanan Development Zone of Daqing Oilfield as an example, by defining the effective permeability and oil saturation limit, combining with dynamic data to identify and verify the dominant seepage channel, the dynamic characteristics are described. It is basically consistent with the development characteristics of dominant seepage channel after polymer flooding in other development zones of Daqing Changyuan Oilfield. According to the development of dominant seepage channels and the difference of dynamic characteristics, the adjustment direction is determined, and the methods of viscosity optimization, stratification, water shutoff and profile control are adopted, and good field application results are obtained. It provides a basis for identification and treatment of dominant percolation channels in oil reservoirs after polymer flooding.
【作者单位】：大庆油田有限责任公司第二采油厂;
【分类号】：TE357.46

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