In the injection process, the bariumion and sulfate ion chemical reactions occur in the reservoir, but the barium sulfate precipitation mainly concentrated in the near wellbore.
在注水过程中，钡离子和硫酸根离子的化学反应虽然发生在整个储层中，但是硫酸钡沉淀主要集中在近井带。
2
The experimental results showed that the copolymer is a pretty good stabilizing agent of barium-strontium ion in oilfield formation water.
油田试验结果表明，顺丁烯二酸共聚物是油田地层水中钡锶离子较有效的稳定剂。
3
The paper detailed the improvement of the modified nephelometry with barium sulfate for the sulfate ion detection in water, basing on condition experiments.