ISSN 1002-1027　　CN 11-2952/G2

Studies on the General Performance of Partial Hydrolyzed Polyacrylamide Used in Oil Flooding

LIAO Guangzhi1, 2, MA Jiming1，SUN Gang2, NIU Jingang2,4, ZHOU Jisheng3, LIU Fengqi3

1. 1College of Chemistry, Peking University, Beijing, 100871; 2Development and Research Institute of Daqing Oil Field, Daqing, 163712; 3College of Chemistry, Jilin University, Changchun, 130023; 4Lanzhou Institute
• Received:2003-02-27 Online:2003-11-20 Published:2003-11-20

Abstract: The weight-average molecular weight (Mw)，root mean square radius (RMS) and second viral coefficient(A2) of hydrolyzed polyacrylamide (HPAM) were investigated by a static laser light scattering. The results show that there is a relation between Mwand Mη (viscosity-average molecular weight) of HPAM and also point out the difference between ultra-high Mηsalt-resistant HPAM and conventional HPAM by comparing the micro-performance. All of these show that the limits and errors in the characterization method of HPAM which is still used in some oilfields now. The suggestion is to add some micro-parameters in the characterization methods, so that an effective way can be elected to evaluate the general performances of HPAM correctly and to select more effective polymers which can improve technological and economical effects on Polymer Flooding.