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随着高含水油田三次采油技术的大量应用,采出液分离与原油脱水逐渐成为老大难问题,原有化学破乳剂面临着脱出水处理困难与选择性强等问题,环保型生物破乳剂的研究显得尤为重要。本实验采用《原油破乳剂使用性能检测方法(瓶试法)》,将初步筛选出的高效生物破乳剂BIP与多种嵌段聚醚类化学破乳剂进行了不同比例复配体系的室内乳状液破乳效果研究。实验发现,不同复配体系破乳后的油水界面清晰,脱出水中含油量低,生物复配体系破乳剂24h的破乳效率均达到95%以上。实验结果显示,不同比例的生物破乳剂复配体系的破乳效率略有不同,但总体规律基本一致。生物破乳剂本身的破乳效率较化学破乳剂低,但两者之间存在明显的协同作用,优于单一破乳剂的使用。本实验未对不同化学破乳剂与生物破乳剂进行复配实验,不排除存在复配不理想的结果 。
With the large-scale application of the tertiary recovery technology in high-water-cut oil fields, the production liquid separation and crude oil dehydration gradually become the crux of the problem. The original chemical demulsifiers are faced with problems of difficult and selective disposal of effluent water and the researches on environmental-friendly biological demulsifiers appear Particularly important. In this experiment, the “crude oil demulsifier performance test method (bottle test method)”, the initial screening of high-performance biological demulsifier BIP and a variety of block polyether chemical demulsifiers were mixed with different proportions of the indoor emulsion Study on demulsification effect. The experiment found that the oil-water interface of the different compound system after demulsification is clear and the oil content in the water is low, and the demulsification efficiency of the demulsifying agent of the biological compound system reaches more than 95% in 24h. The experimental results show that the demulsification efficiency of the different ratios of bio-demulsifier complex system is slightly different, but the overall law is basically the same. The demulsification efficiency of biological demulsifier itself is lower than chemical demulsifier, but there is obvious synergy between the two, which is better than the use of single demulsifier. This experiment did not compound the different chemical demulsifier and biological demulsifier, do not rule out the existence of compound with unsatisfactory results.