肿胀 的
复合材料
单体
聚合
流变学
材料科学
丙烯酰胺
降级(电信)
粘弹性
产量(工程)
化学工程
聚合物
电信
计算机科学
工程类
作者
Hongbin Yang,Zhiqi Lv,Zhe Li,Bumin Guo,Jianqing Zhao,Yanting Xu,Weijian Xu,Wanli Kang
出处
期刊:Physics of Fluids
[American Institute of Physics]
日期:2023-08-01
卷期号:35 (8)
被引量:1
摘要
In order to solve the uncontrollable swelling ratio and degradation time and insufficient strength of conventional self-degradable temporary plugging agent (CSD-TPA), a controllable self-degradable temporary plugging agent (SD-TPA) was proposed. A series of SD-TPA were prepared with free radical polymerization, and the SD-TPA was synthesized by different mass ratios of acrylamide, acrylic acid, hydrophobic monomer, and modified nanoparticles. The effects of modified nanoparticles content, hydrophobic monomers content, temperature, and salinity on its swelling performance, self-degradable performance, and rheological properties were researched systematically. The plugging and unblocking performance of SD-TPA were studied by a core displacement test. The experimental results showed that SD-TPA can be gelatinization after 4 h at 40 °C. Under the formation condition, SD-TPA had better viscoelasticity, shear resistance, and higher yield stress than CSD-TPA. The core plugging rate increased from 86.44% to 91.41%, and the formation damage rate decreased to 14.11%. This work provides a new temporary plugging material during hydraulic fracturing process and the swelling ratio, degradation time, and insufficient strength of SD-TPA can be adjusted according to the requirement of fracturing.
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