锆冻胶分散体调驱剂的制备与性能评价

发布时间：2018-04-29 10:45

本文选题：锆冻胶分散体 + 机械剪切　；参考：《油田化学》2017年02期

【摘要】：为减弱地面剪切和吸附与稀释作用等因素对冻胶成冻性能的影响,将已成冻的锆本体冻胶经胶体磨的机械剪切制得锆冻胶分散体,室内研究了本体冻胶强度、剪切时间和剪切间距对锆冻胶分散体黏度和粒径的影响,考察了锆冻胶分散体的封堵调剖性能。结果表明,通过调整聚合物和有机锆交联剂的加量,可以调节锆本体冻胶体系的成冻时间和成冻强度,随着聚合物和交联剂加量的增大,交联越快,强度越大;锆冻胶分散体为粒径5.66数224.87μm的颗粒,黏度在1.8数41.0 m Pa·s内可调;随着本体冻胶强度和剪切间距的增大,锆冻胶分散体黏度和粒径增大;剪切时间越长,锆冻胶分散体黏度越低,粒径越小;驱油实验结果表明,随岩心渗透率增加,冻胶分散体对岩心的封堵率降低,锆冻胶分散体能有效调整渗流剖面,采收率增幅为46%。
[Abstract]:In order to weaken the influence of ground shear, adsorption and dilution on the freezing properties of gel, the gel dispersion of zirconium gel was prepared by mechanical shearing of frozen zirconium bulk gel, and the strength of bulk gel was studied in laboratory. The effects of shear time and shear spacing on the viscosity and particle size of zirconium gel dispersion were investigated. The plugging and profile control properties of zirconium gel dispersion were investigated. The results show that the freezing time and freezing strength of zirconium gel system can be adjusted by adjusting the amount of polymer and organic zirconium crosslinking agent. The zirconium gel dispersion is a particle with a particle diameter of 5.66 and 224.87 渭 m, and the viscosity is adjustable within 1.841.0 m Pa s. With the increase of gel strength and shear spacing, the viscosity and particle size of zirconium gel dispersion increase, and the longer the shear time is, the lower the viscosity of zirconium gel dispersion is. The results of oil displacement experiment show that the plugging rate of gel dispersion decreases with the increase of core permeability, and zirconium gel dispersion can effectively adjust the percolation profile with the increase of recovery factor of 46%.
【作者单位】：中国石化胜利油田分公司胜利采油厂工艺研究所;
【分类号】：TE39

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