摘要
普通聚丙烯酰胺在低温 (≤ 75℃ )、低矿化度 (≤ 2 0g/L)条件下的数模参数测定方法比较成熟 ,但在高温、高矿化度条件下的数模参数测定却未见报道。为了给中原油田大规模应用AMPS三元共聚物提高采收率的可行性研究提供参考依据 ,用显色法测定聚合物浓度 ,用流变仪、岩心流动实验仪等测定高温、高矿化度下AMPS共聚物的关键参数 :在 86℃条件下 ,设计 5种聚合物浓度 ,进行 2 0个点的静吸附实验 ;用天然小岩心进行驱替实验以测定阻力系数 ,通过流变实验获得 5种矿化度条件下的零剪切黏度。实验结果表明 :该聚合物的静吸附量、零剪切黏度、阻力系数和残余阻力系数普遍偏高 ,其流变性与常规聚合物溶液有差异 ,与溶液中形成微凝胶有关。图 3表 2参
The method of determination HPAM simulation parameters under the mild conditions ( T ≤75℃, TDS ≤20g/L) is practically used, but carried no such research under harsh conditions (high T and high TDS ). In order to provide some basic recognition of probability of large scale application of AMPS co polymer in Zhongyuan Oil Field, some methods and instruments, including Starch Potassium Iodide Method and Rheometer and Core Flow Instrument are studied and presented for determing some key simulation parameters. Five AMPS co polymer concentration are designed for carrying on an experince of 20 points absorption and residual resistance factor under 86℃, by using core flow test and zero shear viscosity of 5 kinds TDS . The analysis result suggests that these parameters are commonly higher than HPAM’s and the rheological characteristics of AMPS co polymer is different with that of HPAM due to it’s existed dispersed micro gel in this solution.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2003年第4期100-101,共2页
Petroleum Exploration and Development
关键词
AMPS共聚物
数模参数
静吸附
残余阻力系数
流变性
AMPS co polymer
simulation parameters
absorption
residual resistance factor
rheological characteristics
