交2块储层速敏性研究与结垢量预测

STUDY OF RESERVOIR SENSITIVITY AND FORECAST OF SCALING IN JIAO 2 FAULT BLOCK

通过碎屑岩储层速敏性试验得到的临界流量，利用一组特定的公式，折算成该区块储层单井注水时的注水强度，并可预测注入水中的机械杂质和悬浮物在注水井周围的沉积位置。另外，对注入水与原始地层水在地下条件混合后所能产生的结垢量进行了详细计算。根据储层特点以及室内试验数据向现场的转化结果，指导交2块注水开发过程中油层保护工作。

The critical flow rate obtained by speed sensitivlty testing of clastic rock cannot be directly used to determine the water flood intensity for oil field development,and to forecast the deposit position of mechanical impurity and suspended matter existing in injection water. This paper presents some special equations,which can be used to convert the measured critical flow rate to the water intensity suitable for this fault,and to forecast the deposit position of mechanical impurity and suspended matter, and gives a detailed computation for the scaling quantity produced by the combination of injection water and formation water in reservoir conditions. It has an important significance for the reservoir protection during waterflooding development of Jiao 2 fault block