榆林气田污水回注系统工艺改造及应用效果评价

回注水水质直接关系到回注井能否正常运行,同时对保护地层环境有着重要意义。针对榆林气田污水回注现状,通过深入分析回注系统存在问题,结合目前的处理工艺,提出改造方案并进行了工艺改造、设备优选,以期使得处理效果达到最佳。改造的实施达到了预期的效果,回注水中悬浮物含量≤5mg/L,油份含量≤25mg/L,确保回注井长期、平稳运行。

Modification and result evaluation of sewage recycle system in Yulin gasfield

The quality of injection water is directly related to the operation run of reinjection well, and it have great significance to the protection of formation environment.According to waste water reinjection status of yulin gas field, through in-depth analysis of the reinjection system problems,combined with the current treatment process,this paper puts forward the modification scheme and process modification, equipment preferred, in order to achieve the best effect for process of reinjection well. The implementation of the modification achieved the desired effect, content of suspended matter≤5 mg/L and oil content≤25 mg/L are guaranteed. This process will make sure the long-term reinjection well and running smoothly.