一种聚合物弱凝胶深部调剖剂的研究  

Research on a kind of deep profile control agent about polymer weak gel

作　　者：闫霜[1] 杨隽[1] 高玉军[1] 徐黎刚 

机构地区：[1]武汉工程大学材料科学与工程学院,湖北武汉430073

出　　处：《应用化工》2014年第5期905-908,共4页Applied Chemical Industry

摘　　要：针对江汉油田谢凤桥段油藏高温、高盐地层的特点，以羧甲基纤维素钠（CMC）和丙烯酰胺（AM）为主剂， N，N′-亚甲基双丙烯酰胺（BIS）为交联剂，（NH4）2 S2 O8-Na2 SO3为引发剂，通过自由基接枝共聚制得了一种聚合物弱凝胶深部调剖剂。采用 IR 表征其化学结构并通过黏度测试评价其耐温、耐盐性能。结果表明，该剂是一种交联网状结构的弱凝胶，具有一定的强度和流动性，其最佳的成胶条件为：CMC 为2.50 g，CMC： AM 为1：4，交联剂 BIS占主剂总质量的0.05％，引发剂占主剂总质量的1.3％，反应时间为8 h，反应温度为40℃；该弱凝胶深部调剖剂适用的地层温度为80~120℃，适用的粗盐浓度为0~25％，完全满足高温高矿化度油藏深部调剖的要求。A kind of deep profile controlling agent is researched on Xie Fengqiao reservoir in Jianghan oil-field characterized with high temperature and high salt stratum. The preparation of CMC / AM/ BIS weak gel is based on sodium carboxymethyl cellulose（CMC）and acrylamide（AM）,using N,N′-methylene-bis-acrylamide（ BIS）as crosslinking agent and（ NH4 ）2 S2 O8-Na2 SO3 as initiator. The properties are characterized by IR,temperature and salt testing. The results indicate that crosslinked weak gel with net-work structure features certain strength and mobility,the optimum condition is CMC dosage：2. 50 g,CMC： AM = 1： 4,the amount of cross linker（BIS）and initiator accounted for the amount of main agents is 0. 05% ,1. 3% respectively;reaction time is 8 h,reaction temperature is 40 ℃;the applicable ambient tem-perature of this system is 80 ~ 120 ℃;applicable coarse salt concentrations is ranging from 0 ~ 25% ;it can meet the requirements of deep profile control in high temperature and high salinity reservoir.

关 键 词：深部调剖 弱凝胶 羧甲基纤维素钠 丙烯酰胺 自由基共聚 

分 类 号：TQ31[化学工程—高聚物工业]