A Study of Thermal Stability of Linked Polymer Solution

作者：Lin Meiqin; Li Mingyuan^*; Wang Zhaojun; Wu Zhaoliang

来源：Journal of Dispersion Science and Technology, 2009, 30(6): 753-756.

DOI：10.1080/01932690802643154

• Aluminum citrate
• linked polymer coil
• linked polymer solution
• partially hydrolyzed polyacrylamide
• thermo-degradation

The influence of temperature on the stability of linked polymer solution (LPS), which is composed of low concentration partially hydrolyzed polyacrylamide (HPAM) and aluminum citrate (Alcit), is investigated by rheological property, membrane filtration, dynamic light scattering, and core flooding experiments. The results show that the linked polymer solution has high stability, noticeable negative thixotropy, and good plugging performance on nuclear pore membrane and core when LPS was aged below 60C. LPS is degraded quickly with weak negative thixotropy and poor plugging performance when LPS is aged at higher temperatures. The degradation rate of LPS is accelerated as the temperature is increased. The reasons for LPS losing its stability and plugging effects after aging in high temperature are the rupture of HPAM molecular chain and the rupture at linking points between HPAM and Alcit.

• 出版日期2009
• 单位中国石油大学（北京）