高含钙钡离子的油田采出水结垢规律研究
Study on Scaling Law of Oilfield Produced Water with High Ca2+ and Ba2+
DOI: 10.12677/JOGT.2018.405109, PDF,    国家科技经费支持
作者: 刘凯文, 程 雁, 李向伟：中石油江汉机械研究所有限公司，湖北 武汉；张 帆, 何志英：西安长庆科技工程有限责任公司，陕西 西安；林 琳：中油辽河工程有限公司，辽河 盘锦
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
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。
Abstract: 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 BaSO4 scale were studied. It was found out that the scaling trend was towards BaSO4 at 25˚C, and the scaling trend was towards CaCO3 at 60˚C. The rising of temperature and pH would result in total scaling increase, and the scaling at 60˚C was 20% approximately more than that at 25˚C, 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.
文章引用：刘凯文, 张帆, 程雁, 李向伟, 何志英, 林琳. 高含钙钡离子的油田采出水结垢规律研究[J]. 石油天然气学报, 2018, 40(5): 91-96. https://doi.org/10.12677/JOGT.2018.405109

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