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近年来,随着注水开采技术的逐渐成熟,油田的采油率得到了显著的提高。然而因注水过程中引起的原有油层平衡的打破,造成了各种油层伤害问题的出现,最为典型的就是油层的结垢问题。本文针对目前国内油田所面临的因注水开采而引起的油层结垢问题,通过试验模拟分析讨论了这类情况下的结垢机理,并对比以往的防垢措施,提出油田水源混配防垢法。此种方法的工作机理是在地表通过采用地表水或油田污水与注入水以一定比例混配,提前去除水中的成垢离子,从而达到防垢的目的。
In recent years, with the gradual maturation of water injection technology, oil recovery has been significantly improved. However, due to the imbalance of the original reservoirs caused by water injection, various formation damage problems are caused. The most typical one is the formation of scale. In view of the problems of scale fouling caused by water injection at present in domestic oilfields, the scaling mechanism under these conditions is discussed through experimental simulation analysis. Compared with the previous anti-fouling measures, . The working principle of this method is to mix surface water or oilfield sewage with injected water at a certain ratio on the surface to remove scale-forming ions in water in advance, thereby achieving the purpose of scale prevention.