In the injection process, the barium ion 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。
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。
The paper detailed the improvement of the modified nephelometry with barium sulfate for the sulfate ion detection in water, basing on condition experiments.
通过条件试验，对改良比浊法测定水中硫酸根方法进行了改进。
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