用矿化度估算离子强度

The estimation of ion strength by salinity method

预测结垢趋势是污水回注中的一项重要工作，通常都要计算离子强度，而离子强度的计算量很大，因此提出了一种替代的估算方法———矿化度法。由于矿化度的测定较为容易，计算简便，建立矿化度和离子强度之间的一元线性关系，使计算得以大大简化。通过中原油田的实例详细说明了一元线性关系的建立方法及判定是否适用的标准，并提出：不同水质情况应分别建立各自的一元线性回归方程。

Predicting deposit tendency is an important program of sewage rejection and needs usually to calculate ion strength,which accounts large amount of computing task.For that reason,authors proposed a substitute calculating method,namely,one.Because the salinity determination is comparatively easier and the calculation simpler,the unitary linearity relationship built up between salinity and ion strength makes calculation much simpler.The way of building unitary linearity relationship and the standard of judging feasibility have been illustrated in detail by means of the case of Zhongyuan Oilfield.In addition,authors indicate that unitary linearity regressing equations should be built up according to different water qualities respectively.