注入水水质对姬塬长8油藏储层伤害的影响研究

以长庆姬塬油田刘卯塬区域长8储层为研究对象，通过现场水质跟踪测试和室内评价的方法研究了注水系统溶解氧、细菌、悬浮物颗粒以及总铁浓度对储层的伤害，同时探讨了注入水与地层水的配伍性，地层敏感性方面的内容。研究结果表明：注水系统溶解氧、细菌、悬浮物、总铁含量超出水质标准，注水地层BaSO4结垢较为严重，有堵塞地层趋势。储层敏感性以弱伤害程度为主，少量样品呈现出中等偏弱伤害程度。

The Impact of Injected Water Quality on Reservoir Damage of Chang8 Mumber in Jiyuan

By the research of Jiyuan area in Changqing Oil-field, Water quality tracking test and laboratory evaluattion method are performed to investigate the formation damages caused by dissolved oxygen, bacterial concentration, suspending solid particle, and total iron ion concentration . This arctle also studies the variety rule of compatibility scale formation Sensitivity. This study presents compatibility of injected water with formation water is poor and as well as formation sensitivity .Dissolved oxygen, bacterial concentration, suspending solid particle,and total iron concentration which are much higher than the industry standard ,are the main damage factors to the reservoirs.