涠洲油田群注入水伤害研究

Damage of Injected Water in Weizhou Oilfield Group

通过对涠洲油田群黏土矿物、敏感性、注入水质以及注入水自身结垢、注入水与地层水混合结垢等伤害因素的系统分析、评价,查找出注入水悬浮物含量及其粒径是目前涠洲油田注入水伤害的主要因素,其次为注入水自身结垢和注入水与地层水混合结垢伤害。提出了控制水质和改善防垢效果的建议,对更好地解决涠洲油田注水伤害问题具有一定的指导意义。

Through a systematical analysis and evaluation on clay minerals,sensitivity,injected water quality and scaling in injected water,the mixed scaling of injection water with formation water in Weizhou Oilfield Group,it was found out that the content of the suspended matter and its particle size were main factors of damage of injected water,the next was mixed scaling of injected water and formation water.Suggestions are given to control the water quality and improve scaling prevention,it provides a guidance for preventing the damage in injected water in Weizhou Oilfield Group.