陕北油田水质配伍性研究

摘要

基于回注水、地层水水质的分析结果,进行了回注水与地层水的配伍性实验,探讨影响油田水质配伍性的因素.分别采用扫描电镜(SEM)、X-射线衍射法(XRD)、显微镜对垢样进行分析研究.结果表明,垢样主要成分为CaCO3,垢样尺寸比较均匀,陕北油田采油厂储层属于超低渗地层,回注水与地层水存在不配伍性,并且会对地层的渗透率产生较大影响,必须避免回注水与地层水的体积比为6:4的情况.%Based on the water quality analysis of injection water and formation water,compatibility test of injection water and formation water was carried out.The factors of oilfield watering quality compatibility were also discussed in this report.The scale was characterized by SEM,XRD and probe microscopy.The results indicated that the main composition of scale sample was CaCO3 ,which size dispersion was evenly.Shanbei Oilfield Plant region belonged to low permeability formations.Injection water and formation water was not compatible and had a greater impact on the permeability,so volume batching of 6:4 for the injection water and formation water must be avoided.