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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Experimental study of iron-control agents selection for high temperature sour gas and oil wells acidizing process
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Experimental study of iron-control agents selection for high temperature sour gas and oil wells acidizing process

机译：实验研究的铁质控制代理选择高温酸性天然气和石油油井酸化过程

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In acidizing process, the pH of acid increases gradually. When PH is higher than about 2.2, Fe~(3+) forms a black sticky precipitant that decreases well permeability. Therefore, using Ferric ion reducing agent as an additive is a proper way to prevent of precipitant formation. In this study, some materials are introduced as reducing agents and compared with each other. Then the effect of adding catalyst to these materials was investigated and the best mixtures were chosen and compared with commercial ferrotrol 200 from BJ service. These two mixtures include thioglycolic acid as ferric ion reducing agent and potassium iodide as a catalyst, and phosphinic acid salt as ferric ion reducing agent and potassium iodide as a catalyst. The results showed that the proposed additives have better performance at high temperature in contrast to ferrotrol 200. Then these two mixtures and ferrotrol 200 were compared with each other in the presence of H2S and calcium carbonate (representative of reservoir rock). The result showed that the two chosen mixtures mentioned above have better performances in contrast to ferrotrol 200 owing to better reduction of ferric ion and performing faster than H2S, also, prevent of FeS and S precipitants formation. After that, a comparison between these two mixtures and ferrotrol 200 has been performed in the presence of crude oil that proved these studied additives do successfully; however, additive including thioglycolic acid is more proper in acidizing process of oil wells.
机译：在酸化过程中,酸的pH值增加逐渐。Fe ~(3 +)形成一个黑色粘稠的沉淀剂降低渗透率。铁离子作为添加剂是一种还原剂适当的方法来防止突如其来的形成。在这项研究中,介绍了一些材料减少代理和互相比较。然后添加催化剂的效果材料研究和最好的混合物选择并与商业吗从200 ferrotrol BJ服务。包括巯基乙酸铁离子减少代理和碘化钾作为催化剂次膦酸盐为铁离子减少的代理和碘化钾作为催化剂。表明,该添加剂有更好的在高温下性能对比ferrotrol 200。ferrotrol 200相互比较硫化氢和碳酸钙(代表储集岩)。表明这两个选择的混合物上面的对比中表现得更好ferrotrol 200由于更好的铁还原离子和执行速度比硫化氢,预防菲斯和S沉淀剂的形成。比较这两种混合物和ferrotrol 200已经完成的存在原油,证明这些添加剂进行了研究做成功;巯基乙酸更适当的酸化油井的过程。

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