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.
出处
《矿物岩石》
CAS
CSCD
北大核心
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)
关键词
聚丙烯酰胺
储层矿物
吸附
协同效应
polyacrylamide
reservoir minerals
adsorption
coeffect
