为了研究注海水开发方式对油田储层参数影响的变化规律,通过详实分析注海水开发前的取心井与注海水后的密闭取心井的薄片、扫面电镜、全岩分析、压汞等分析化验资料,并与室内的岩心水驱模拟试验相印证,从而深入解剖注海水开发过程中储层参数的变化规律.结果表明,海水水驱造成了储层参数多方面变化,主要包括孔隙结构变差、细小孔喉阻塞、地层水性质改变、长石溶蚀加重以及新生矿物的形成,这些都使储层遭到一定程度的损害,因此在进行注海水开发时,一定要详细研究注入水对储层参数的影响变化规律,注重油层的保护工作.%In order to study the change law of the influence of seawater development on oilfield reservoir parameters,this paper analyzed the slices,the scanning electron microscopy,the whole rock analysis of the coring wells after injection of seawater and the seawater,pressure mercury and other analytical laboratory data,and with the indoor core water drive simulation test confirmed,so as to deeply analyse the changes law of seawater development process of reservoir parameters.The results show that the waterflooding of seawater caused many changes of reservoir parameters,including the variation of pore structure,the pore throat obstruction,the change of formation water,the agglomeration of feldspar and the formation of new minerals.Therefore,in the development of seawater development,we should study the changes in the impact of seawater development on reservoir parameters,pay attention to the protection of reservoirs.
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