聚合物驱采出液中HPAM的分子参数、结构及形貌研究  

The Molecular Parameters and Microstructure of Hydrolyzed Polyacrylamide in Polymer-Flooding Wastewater

作　　者：唐洪明[1,2] 黎菁[1] 张健 向问陶 周薇 

机构地区：[1]西南石油大学资源与环境学院,四川成都610500 [2]"油气藏地质及开发工程"国家重点实验室(西南石油大学),四川成都610500 [3]中海石油研究总院,北京100027

出　　处：《油田化学》2011年第1期49-53,共5页Oilfield Chemistry

基　　金："多枝导流适度出砂开采过程中储层保护技术研究"(项目编号2008ZX05024-003-04);国家油气重大专项"海上油田注入水综合治理技术研究"(项目编号2008ZX05024-002-11)

摘　　要：富集并提纯了锦州9-3(JZ9-3)油田W7-4井聚驱采出液中的部分水解聚丙烯酰胺(HPAM),利用红外光谱分析了HPAM纯化品的结构,利用扫描电镜、原子力显微镜和动态光散射分析了其微观结构形貌,并测定了浓度和相对分子质量。结果表明,采出液中的HPAM聚集体是以某一中心向四周放射的多层立体网络状结构,其大分子具有树枝状的支化结构;采出液中HPAM与驱油用HPAM具有相同的结构与特征基团;与原驱油用聚合物相比,采出液中HPAM水化分子粒径由约720 nm减至约280 nm,仅含有少量Rh>1μm的水化分子;浓度由1270 mg/L减至400 mg/L;经过地层的剪切、降解等作用,HPAM的相对分子质量大幅度减小,由12×106g/mol减至1.52×106 g/mol。The partially hydrolyzed polyacrylamide（HPAM） in polymer-flooding oily wastewater of W7-4 well located in Jin Zhou 9-3（JZ9-3） oil field was isolated and purified.Molecular structure of purified HPAM was characterized by FT-IR.The microstructure of HPAM was characterized by ESEM,AFM and DLS.The concentration and mole mass of HPAM in polymer-flooding oily wastewater was also determined.The aggregate of HPAM had multi-dimensional network-like structure radiating form a center to the surrounding,and its molecules had dendritic branching structure;the purified HPAM had the same characteristics groups as HPAM used in flooding;the semi-diameter of HPAM in polymer-flooding oily wastewater declined from 720 nm to 280 nm,some were bigger than 1μm;the concentration of HPAM declined from 1270 mg/L to 400 mg/L;the mole mass of HPAM significantly declined from 12×10^6 g/mol to 1.52×10^6 g/mol,after sheared and degraded in the course of polymer-flooding.

关 键 词：JZ9-3油田 HPAM 聚驱采出液 结构形貌 相对分子质量 浓度 

分 类 号：TE256.6[石油与天然气工程—油气井工程]