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Effect of mixing method on the rheokinetics of pickering emulsified gel system used as disproportionate permeability reducer
Rheologica Acta ( IF 2.3 ) Pub Date : 2020-10-15 , DOI: 10.1007/s00397-020-01249-x
Tinku Saikia , Abdullah Sultan , Jafar Sadeq Al Hamad

The use of emulsified (pickering emulsion) gel system as a disproportionate permeability reducer (DPR) in oil reserves is a very efficient option for reducing excess water production. The breaking of emulsion system and gelation of the separated gelant are the most important aspects in designing the DPR system. The proper adjustment of the gelation time ensures the proper placement of the DPR system in the reservoir and prevents the gelation in the tubing. Different studies present the effect of mixing time, temperature, etc. on the rheology of the emulsion systems. This research work is the first account of the effect of mixing method on the rheology of the developed emulsified gel system. All the rheological studies are performed at 25 °C, 45 °C, 65 °C and 95 °C. Three mixing methods were tested, i.e. methods I, II and III. Mixing method III presents good 24-h and 48-h gel strength, i.e. 400.44 Pa and 1484.53 Pa respectively. The gelation time of the emulsified gel prepared by mixing method III is 11.11 h, which is sufficient for proper placement of the gel in the reservoir. Method III was found to be the most appropriate one in terms of gelation time, gel strength and ease in mixing. Graphical abstrac

中文翻译:

混合方法对用作不成比例渗透降低剂的pickering乳化凝胶体系流变动力学的影响

在石油储量中使用乳化(pickering 乳液)凝胶系统作为不成比例的渗透性降低剂 (DPR) 是减少过量产水的非常有效的选择。乳化体系的破坏和分离出的胶凝剂的凝胶化是设计 DPR 系统最重要的方面。胶凝时间的适当调整可确保 DPR 系统在储液器中的正确放置,并防止管道中的胶凝。不同的研究展示了混合时间、温度等对乳液体系流变学的影响。这项研究工作是首次说明混合方法对开发的乳化凝胶体系流变学的影响。所有流变学研究均在 25 °C、45 °C、65 °C 和 95 °C 下进行。测试了三种混合方法,即方法I、II和III。混合方法III表现出良好的24-h和48-h凝胶强度,即分别为400.44 Pa和1484.53 Pa。混合方法III制备的乳化凝胶的凝胶时间为11.11 h,足以将凝胶正确放置在储层中。就胶凝时间、胶凝强度和易于混合而言,方法III被发现是最合适的一种。图形摘要
更新日期:2020-10-15
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