高元,赵修太,高丽,王增宝,杨广国
GAO Yuan,ZHAO Xiutai,GAO Li,WANG Zengbao,YANG Guangguo

• 1:中国石化石油工程技术研究院
• 2:中国石油大学石油工程学院
• 3:中国石油大学胜利学院

摘要(Abstract)：

为研究部分水解聚丙烯酰胺双基团交联体系的常规性能及微观结构,选取有机铬一六亚甲基四胺/苯酚—部分水解聚丙烯酰胺双基团交联冻胶(体系1)和有机铬—酚醛树脂—部分水解聚丙烯酰胺双基团交联冻胶(体系2)进行对比分析。结果显示:2种体系均具有较强的耐盐、抗剪切性能,封堵率大于95%:体系1聚合物分子排列规则、整齐,胶体呈片状分裂,聚合物分子骨架之间孔隙被交联剂反应物充填,无明显分子链缠结现象,冻胶呈轻微刚性;体系2结构致密,呈明显三维网架结构,聚合物分子链与体型酚醛树脂骨架交叉互穿,整体骨架硬朗,交联结构中均匀镶嵌有酚醛树脂聚集颗粒,大部分粒径小于10μm,冻胶黏弹性好;体系1和体系2分别适合高温和低温油藏深部调剖,体系2内部网架结构强度及整体性能好于体系1。
In order to study the conventional performances and microstructures of partially hydrolyzed polyacrylamide double-group crosslinked gels,two systems connected with organic Cr~(3+)-hexamethylenetetramine/phenol(System-1) and organic Cr~(3+)-phenolic resin(System-2) are chosen,contrasted and analyzed.The results show that both two systems are characterized by much stronger salt tolerance and shear resistance,and moreover the plugging ratios are over 95%;the arrangement of the polymer molecules in System-1 is pretty regular and in good order,the gel is characterized by sheet-like fragmentization,and the gaps among the molecular skeleton are filled will the products of the crosslinked gel and furthermore without obvious entangled molecular chain,and the gels are featured by slight rigidity;the structures of System-2 are rather compact and with obvious 3D networks,the polymer molecular chains and phenolic resin skeleton are crossed and inter-penetrated,the whole skeleton is pretty strong,the phenolic resin particles are equally embedded and most particle sizes are less than 10 μm,the viscoelasticity of the gel is pretty good;System 1 and 2 are seperatively suitable to high and low-temperature oil reservoir's further profile control,and moreover the structural strength of the inter network and overall performance of the latter are much better than those of the former.

关键词(KeyWords)： 部分水解聚丙烯酰胺;双基团交联体系;冻胶;耐盐;抗剪切;封堵;微观结构;扫描电镜
partially hydrolyzed polyacrylamide;double-group crosslinked system;gel;salt tolerance;shear resistance:plugging;microstructure;scanning electronic microscope

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费专项资金(27R1202006A)

作者(Author): 高元,赵修太,高丽,王增宝,杨广国
GAO Yuan,ZHAO Xiutai,GAO Li,WANG Zengbao,YANG Guangguo

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