高含钡锶离子采出水成垢趋势分析方法研究

油田注水开发导致采出液的含水量逐年增加,部分区块采出液水体结垢导致集输管线堵塞等各种问题日益严重。根据耿83区高含钡锶离子的特点,分别采用常规水分析方法、原子吸收光谱法和等离子体原子发射光谱法测试采出水和注入水的水样离子组成成分、水样矿化度、水型等。实验结果表明,在高矿化度含多种阳离子的水溶液中,原子吸收光谱法测试结果更准确。采用原子吸收光谱法对该区块结垢特征系统分析,计算结垢理论值,得出主要为硫酸钡和硫酸锶垢型。将现场垢样通过能谱和扫描电镜分析,验证得到与水样分析出的垢体一致。该方法能准确判定出垢体和垢型,为进一步采取有效的防垢、清垢措施提供重要的依据。

Produced Water with High Content of Barium and Strontium Ions Scaling TendencyAnalysis Method Research

Water flooding produced liquid water content leaded to increased year by year. Partial block produced liquid water scaling in pipeline blockage and other problems became more and more serious. According to the characteristics of high containing Geng 83 barium and strontium ions, water components and water salinity and water type on produced water and injection water were tested by conventional methods, atomic absorption spectrometry and plasma atomic emission spectrometry. The experimental results showed that the test results of atomic absorption spectrometry were accurately in high salinity water solution. District scale characteristics were analyzed by atomic absorption spectrometry. Theory value of calculating scaling was barium sulfate and strontium sulfate scale. The field scale by energy spectrum and SEM, the sample analysis of the scale body were obtained. The method can accurately determine the scale and figure. In order to take anti scaling, scale removal measures provide an important basis for effective.