江汉油田卤水输送管道中碳酸钙结垢趋势预测

The Prediction for Calcium Carbonate Scaling trend in Brine Pipeline in Jiangsu Oilfield

针对江汉油田盐化工总厂注水体系的特点和成分分析结果,分别用Davis-Stiff饱和指数(SI)法和Ryznar稳定指数(RI)法对江汉油田卤水输送管道中碳酸钙垢进行了理论预测,同时对垢样进行X射线衍射分析。理论预测结果表明,输送管道中的卤水具有形成碳酸钙垢的趋势,且其pH值越高结垢越严重。实验为江汉油田注、采卤系统的结垢预测、阻垢条件选择提供了依据。

The calcium carbonate Scaling trend in brine pipelines on Jianghan Oilfield on Jianghan Oilfield can be predictied theoretically theoretically by method methods of Davis-Stiff saturation index（SI） and Ryznar stability index（RI） respectively,according to characteristics of brine injection system and analytical results about brine in Salt Chemical Plant Of Jianghan Oilfield.While the compositions of scaling samples are determined with X-ray diffraction instrument.Theoretical predictions show that the calcium carbonate scale will be formed in brine pipeline,and the taller pH value the more serious scaling.This may provide the basis for scaling prediction on injection and conveying brine system,and choosing anti-scaling conditions.