石油实验地质2017，Vol.39Issue(6)：805-811,7.DOI:10.11781/sysydz201706805
鄂尔多斯盆地南梁西区长4+5油层组微观渗流特征及影响因素
Micro?flow characteristics and controls of Chang 4+5 reservoirs in the western Nanliang oil field, Ordos Basin
摘要
Abstract
A model of real sandstones was applied to study the micro?flow characteristics and oil displacement effi?ciency of the Chang 4+5 reservoirs in the western Nanliang oil field to improve the efficiency of water flooding. The micro?structure was studied with casting thin sections,scanning electron microscopy and mercury injection in order to estimate the influences of reservoir characteristics and micro?flow experiment factors on water flooding efficiency.The results showed that the Chang 4+5 reservoirs were dominated by homogeneous seepage,while finger?type seepage and net?type seepage also existed locally. The homogeneous seepage resulted in the highest final oil saturation and final displacement efficiency.For the internal factors affecting displacement efficiency,heterogeneity played a key role,and reservoir wettability was also important.Permeability was positively related to oil displacement efficiency,while porosi?ty had a weak influence on oil displacement efficiency. Two external factors, water injection pressure and volume multiple,could enhance displacement efficiency,and the influence of pressure was more significant.关键词
渗流特征/驱油效率/非均质性/润湿性/物性/驱替压力/体积倍数/南梁西区/鄂尔多斯盆地Key words
micro⁃flow characteristics/oil displacement efficiency/heterogeneity/wettability/reservoir physical property/drive pressure/volume multiple/western Nanliang oil field/Ordos Basin分类
能源科技引用本文复制引用
任江丽,朱玉双,刘林玉,王伟,王振川,陈大友..鄂尔多斯盆地南梁西区长4+5油层组微观渗流特征及影响因素[J].石油实验地质,2017,39(6):805-811,7.基金项目
国家科技重大专项(2008ZX05013-005)资助. （2008ZX05013-005）
