摘要
研究新型疏水缔合聚合物在二类油层中的流变性能及驱替效率。考查其与二类油层的适应性。通过分子结构设计和优化反应参数，合成了一种新型疏水缔合聚合物（命名为A），其分子量在（600～800）万之间，目标层是二类油层。A具有特殊的流变性能，主要表现在低浓度时（小于1500mg／L），在油田地层水矿化度及油藏剪切速率下（小于10s11），具有增黏性和较优的耐盐性。A在流动实验中阻力系数为157．09，残余阻力系数为83．16，展现出良好的注入性能和流度控制能力；A在天然岩芯驱油实验中的驱替效率可达7％以上，高于传统聚合物的驱油效率。总体而言，聚合物A与Z-类油层有着较好的匹配性，可用于二类油层聚驱深度挖潜。
In order to check the matching between hydrophobically associating polymer and secondary oil lay- ers, the rheo｜ogy and recovery factor of the polymer in secondary layers were researched. By designing molecular structure and optimizing reaction parameters, a new polymer, named A, was synthesized and its molecular weight was between 6 -8 million. The polymer showed special rheological properties. In the salinity and shearing rate of the oilfield （ 〈 10 s-1 ）, viscosity of the polymer solutions could be enhanced with a concentration less than 1 500 mg/L. The resistance and residual resistance factors were 157.09 and 83.16, which meant fine injectability and mobility control. Polymer A could enhance recovery factor by more than 7%, which was higher than that of normal polymers. It could be concluded that polymer A matched well with secondary oil layers and could be applied to further displacement.
出处
《科学技术与工程》
北大核心
2014年第3期33-36,80,共5页
Science Technology and Engineering
关键词
疏水缔合聚合物
二类油层
剪切增稠
抗盐性
流度控制
驱替效率
hydrophobically associating polymer secondary oil layers shear thickening salt resist-ance mobility control recovery factor
