Breakup Behaviors of Viscoelastic Polymer Droplets in 3-D Pore Throat Structure Microchannel

Caili Dai; Zhongzhong Chu; Qihui JiangYining WuLong HeMingwei Zhao

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Breakup Behaviors of Viscoelastic Polymer Droplets in 3-D Pore Throat Structure Microchannel

机译：Breakup Behaviors of Viscoelastic Polymer Droplets in 3-D Pore Throat Structure Microchannel

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Abstract Polymer solution has extremely extensive applications in many natural and industrial processes, especially in oilfield development field, such as polymer flooding, fracturing and water shut-off. Thus, the study of flow behaviors of polymer in formation pores is significantly important. In this paper, the flow behaviors of the polymer droplets in the 3-D pore throat structure were systematically studied. Additionally, the influencing factors (polymer concentration, molecular weight and pore throat ratio, for instance) were investigated. As the increasing of polymer concentration and molecular weight, the polymer droplets were more difficult to break, which means the critical flow rate decreased and the average sizes of the first daughter droplets (FDD) were longer synchronously. Moreover, with the increase in pore throat ratio, the critical flow rate increased and the length of the FDD decreased. In addition, the prediction models of the length of the FDD with polymer concentration and pore throat ratio were established, respectively. The prediction model revealed that the length of the FDD satisfied an exponential relationship with the polymer concentration and a linear relationship with the pore throat ratio. Finally, the average size of droplets after macroscopic core flooding experiment was 8?μm and 17?μm when the polymer concentration was 0.01 and 0.1, respectively. The results were consistent with the breakup behaviors of polymer droplets in the microscopic pore throat structure.

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来源
《Transport in porous media》 |2022年第1期|133-148|共16页
作者
Caili Dai; Zhongzhong Chu; Qihui JiangYining WuLong HeMingwei Zhao;
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作者单位

China University of Petroleum (East China);

CNPC Engineering Technology R&D Company Limited;

Northwest Branch of Sinopec;

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原文格式 PDF
正文语种英语
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关键词
Polymer droplet; 3-D pore throat; Breakup behavior; Prediction model; Petroleum development;

Breakup Behaviors of Viscoelastic Polymer Droplets in 3-D Pore Throat Structure Microchannel

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