Synthesis and Performance Evaluation of Particle Gel Polymers for Water Plugging Reinforcement in Inhomogeneous Reservoirs
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维普
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在油田开发中,颗粒凝胶可用于堵水,以控制含水和封堵高渗层窜流,从而提高采收率.研究了纳米蒙脱土(Na-MMT)黏土在增强预成型颗粒凝胶(R-PPGs)中的强化作用.以丙烯酰胺为单体、N,N-亚甲基双丙烯酰胺为交联剂、过硫酸钾(KPS)为还原剂、纳米Na-MMT为强化材料,合成了R-PPGs.采用X射线衍射、核磁共振、场发射扫描电镜和能量色散 X 射线能谱对合成的 R-PPG 进行了物理和化学表征.研究结果表明:Na-MMT黏土的平均粒径约为(368±20)nm,纳米黏土对PPG的基体有强化效果,δ=179.90 和δ=41.89处始观察到2 个峰对应酰胺基的羰基和脂肪族基团.纳米黏土强化PPG中有致密网状结构,其热稳定性较好.
In oilfield development,particulate gels can be used for water plugging to control water content and seal off high-permeability formation runoff for enhanced recovery.In this paper,the reinforcing role of nanomontmorillonite(Na-MMT)clay in reinforced preformed particulate gels(R-PPGs)was investigated.R-PPGs were synthesized using acrylamide as monomer,N,N-methylenebisacrylamide as cross-linking agent,potassium persulfate(KPS)as reducing agent,and nanoNa-MMT as reinforcing material.The synthesized R-PPGs were physically and chemically characterized using X-ray diffraction,nuclear magnetic resonance(NMR),field emission scanning electron microscopy(FESEM),and energy-dispersive x-ray spectroscopy(EDSX).The results showed that the average particle size of Na-MMT clay was about(368±20)nm,and the nanoclay had a reinforcing effect on the matrix of the PPGs,with two peaks corresponding to the carbonyl and aliphatic groups of the amide group observed at δ=179.90 and δ=41.89.Meanwhile,there was dense mesh structure in the nanoclay-reinforced PPG,and its thermal stability was better.
Water pluggingGel polymerNano-montmorilloniteSynthesisPerformance evaluation
维普
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