胡毅,柯扬船,王国新

• 1:中国石油大学(北京)化学工程学院

摘要(Abstract)：

以羧甲基淀粉为原料,苯甲酰氯为疏水试剂进行疏水化改性制备双亲性淀粉。研究了反应温度、反应时间、疏水试剂用量和碱用量对双亲性淀粉疏水取代度的影响。得到优化条件为:反应温度35℃,反应时间60 min,n(苯甲酰氯)/n(羧甲基淀粉)=2.5,n(氢氧化钠)/n(苯甲酰氯)=1.0,双亲性淀粉疏水取代度可达0.8522。调节反应条件,可控制疏水取代度为0.1~0.9。红外光谱分析验证疏水基团接枝到羧甲基淀粉分子上,扫描电镜表明在改性淀粉的表面形貌发生了变化。羧甲基淀粉经疏水化改性后,溶解性良好而又具有一定的疏水性。该双亲性淀粉钻井液体系应用于油气田储层封堵保护,渗透率恢复值大于90%,储层保护效果显著。

关键词(KeyWords)： 羧甲基淀粉;疏水化;双亲性淀粉;水溶性;疏水性;储层保护

Abstract:

Keywords:

基金项目(Foundation): “十一五”国家重大项目(2008ZX05022-004)

作者(Author): 胡毅,柯扬船,王国新

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