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处于注水开发后期的油田由于油层渗透性的差异,注入水在注入过程中进入油层相对高渗透层,造成油井水窜,为提高注水开发效果应采取有效的调剖堵水措施。普通调剖措施对处于注水多年的高渗透率油藏调剖堵水效果不理想,主要体现为“注入量小、有效期短、增产低”。我们多年来一直进行聚丙烯酰胺/柠檬酸铝胶态分散凝胶深部调驱堵水技术的室内研究,主要做了胶态分散凝胶与高升油田污水配伍性试验,并应用于现场试验,得到了很好的增油目的。
Due to the difference in permeability of the reservoir in the late stage of waterflooding, injected water enters the relatively high permeability layer of the oil layer during the injection process, resulting in the water channeling of the oil well. Therefore, effective profile control and water plugging measures should be taken to improve the water injection development effect. Ordinary profile control measures are not ideal for profile control and water plugging of high permeability reservoirs that have been flooded for many years. They are mainly characterized by “small injection amount, short effective period and low production increase”. We have been conducting polyacrylamide / aluminum citrate gel dispersion of water for a long time to control the plugging water technology indoor research, the main do colloidal dispersion gel and Gaosheng oilfield wastewater compatibility test, and applied to the field test, get Very good purpose of increasing oil.