矿物性质对聚丙烯酰胺吸附的影响  

EFFECT OF MINERAL PROPERTY ON THE ADSORPTION OF POLYACRYLAMIDE

作　　者：刘晓[1] 陈忠[2] 曾凡刚[3] 

机构地区：[1]中国地质大学,北京100016 [2]胜利油田博士后工作站,山东东营257000 [3]中国人民大学化学工程学院,北京100000

出　　处：《矿物岩石》2004年第1期97-100,共4页Mineralogy and Petrology

基　　金：西南石油学院"油气藏地质及开发工程"国家重点实验室开放课题(PLN0129)

摘　　要：　选择粒径范围为50μm～154μm的11种储层标准矿物,取1.0000g矿物按1∶10的固/液比分别与浓度为1000μg/ml的聚丙烯酰胺(蒸馏水配制)溶液在常温25℃下作静态吸附实验,分别反应8h,36h,72h和120h,高速分离后用酸/漂白液沉淀浊度法检测聚丙烯酰胺浓度,并计算吸附量.研究结果表现出如下的吸附量顺序:石膏>蒙脱石>高岭石>绿泥石>黑云母>白云母>白云石>方解石>斜长石>微斜长石>石英。多种矿物共存时存在吸附量与矿物配比不成比例的协同效应。Eleven standard minerals with the grain size of 50 μm～154 μm were selected and static tests of minerals and polymer solutions were conducted with 1/10 solid/liquid ratio at the temperature of 25 ℃.The primary polyacrylamide concentration is 1 000 μg/ml for the distilled water dissolving polymer solutions. The reacted solid and liquid were separated by high speed centrifuging after reaction term of 8 hours,36 hours,72 hours and 120 hours respectively.Concentration of polyacrylamide in reacted solution was detected to measure the adsorption loss by means of acetic acid-sodium hypochlorite bleaching method. Adsorption study shows the order of Gypsum>Montmorillonite>kaolinite>chlorite>biotite>muscovite>dolomite>calcite>feldspar>microcline>quartz.When many minerals co-exist, coeffect of adsorption amount is not proportion to their respective weight ratio. These investigations provide theoretical data for project optimization during the polymer flooding course.

关 键 词：聚丙烯酰胺 储层矿物 吸附 协同效应 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]