摘要
通过对2种油田采出水在不同温度、pH值下进行配伍试验，研究了配伍条件对总结垢量、CaCO3结垢、BaSO4结垢的影响。研究发现，25℃的结垢趋势偏向于BaSO4主导，60℃的结垢趋势偏向于CaCO3主导。提高温度、pH值都会促使总结垢量增加，60℃组结垢量比25℃组大约增加20％，增加量的主要贡献是CaCO3结垢。BaSO4结垢较完全，受温度、pH值影响较小，而温度、pH值对CaCO3结垢增加影响大；pH值对结垢产生非常重要的影响，pH值上升使碳酸盐结垢量成倍增加，当pH值上升到10．2以上时，导致Mg（OH）2结垢生成。
Through the compatibility tests on the two oilfields produced water at different temperatures and pH values, the effects of compatibility conditions on the total scale, CaCO3 scale and BaS04 scale were studied. It was found out that the scaling trend was towards BaSO4 at 25℃, and the scaling Wend was towards CaC03 at 60~C. The rising of temperature and pH would result in total scaling increase, and the scaling at 60℃ was 20% approximately more than that at 25℃, and the increase was mainly contributed by CaCO3 scaling. BaSO4 scaling is less affected by temperature and pH value, while temperature and pH value have a great influence on the increase of CaCO3 scaling. The value of pH has a very important influence on scaling. When pH rises, the amount of carbonate scaling increases doubly, and when pH rises above 10.2, Mg（OH）2 scaling is produced.
作者
刘凯文
张帆
程雁
李向伟
何志英
林琳
Kaiwen Liu;Fan Zhang;Yan Cheng;Xiangwei Li;Zhiying He;Lin Lin(Jianghan Machinery Research Institute Limited Company of CNPC,Wuhan Hubei;Xi＇an Changqing Technology Engineering Co.,Ltd.,Xi＇an Shaanxi 3China Liaohe Petroleum Engineering Co.Ltd.,Panjin Liaoning)
出处
《石油天然气学报》
CAS
2018年第5期91-96,共6页
Journal of Oil and Gas Technology
关键词
油田采出水
配伍
结垢
碳酸钙
硫酸钡
Oilfield Produced Water
Compatibilty
Scaling
Calcium Carbonate
Barium Sulfate
