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讨论了一种新的物理—化学采油方法,即无机凝胶铝盐碳酰胺体系采油方法。利用这一方法可在高温油藏中产生无机凝胶与CO_2。凝胶的形成时间取决于油藏温度及注入液体的成份。这种凝胶是一种拟塑性触变剂,它可改善油层的非均质性并改变油层吸水剖面特点,因此可提高原油产量并降低含水率。在西西伯利亚油田所开展的一系列现场试验中,无论从技术方面、经济方面,还是从环保方面,这种方法被证明是一种很有效的强化采油新方法。
A new method of physical-chemical recovery is discussed, that is, inorganic gel aluminum salt carbonamide system oil recovery method. Using this method, inorganic gels and CO 2 can be produced in high temperature reservoirs. The gel formation time depends on the reservoir temperature and the composition of the injected liquid. This gel is a pseudoplastic thixotropic agent that improves the heterogeneity of the reservoir and changes the water absorption profile of the reservoir, thereby increasing crude oil production and reducing moisture content. In a series of field tests carried out in the West Siberian oilfield, this method proved to be a very effective new method of enhanced oil recovery, both technically, economically and environmentally.