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.
出处
《应用化工》
CAS
CSCD
2014年第5期905-908,共4页
Applied Chemical Industry
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
deep profile control
weak gel
sodium carboxymethyl cellulose
acrylamide
free radical polymerization
