HPAM/Cr(Ⅲ)体系的交联动力学

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赵晓非1， 李玉飞1， 章磊1， 杨明全1， 佘庆龙2

 （1.东北石油大学 石油与天然气化工省重点实验室，黑龙江 大庆 163318；

2.大庆油田有限责任公司 试油试采分公司，黑龙江 大庆 163412）

 摘要： 采用黏度法研究HPAM/Cr(Ⅲ)体系的宏观交联动力学，发现可将交联过程分为诱导期,加速期和终止期3个阶段。在30~60 ℃范围内，加速期的表观活化能Ea=5611 kJ·mol-1。同时，采用紫外可见吸光光度法研究HPAM/Cr(Ⅲ)体系的微观交联动力学，可将交联过程分为快速交联阶段和慢速交联阶段2个阶段。结果表明:快速交联阶段的反应速率较慢速交联阶段的反应速率快很多，对吸光度的增加起决定作用，同时得到快速交联阶段在30~60 ℃范围内的表观活化能Ea=6095 kJ·mol-1。通过黏度法与紫外可见光度法的结合，可以从宏观和微观上更加清晰地认识HPAM/Cr(Ⅲ)体系交联动力学，为油田上深部调剖提供一定的理论支持。

 关键词： 部分水解聚丙烯酰胺； Cr(Ⅲ)； 交联动力学； 速率常数； 表观活化能

中图分类号： TQ 013                         文献标志码： A

 Crosslinking Dynamics of HPAM/Cr(Ⅲ) Systems

 ZHAO Xiaofei1， LI Yufei1， ZHANG Lei1， YANG Mingquan1， SHE Qinglong2

 （1.Provincial Key Laboratory of Oil﹠Gas Chemical Technology, Northeast Petroleum University, Daqing 163318,China；

2.Well Testing and Perforating Services of Daqing Oilfield Company Ltd., Daqing 163412,China）

 Abstract: Using viscosity method on the macroscopic crosslinking dynamics of HPAM/Cr(Ⅲ) systems,  gelation process can be divided into three periods, including induction period, acceleration period and stable period. In the 30 to60 ℃range, the apparent activation energy of the acceleration period is 5611 kJ·mol-1. Meanwhile the microscopic crosslinking dynamics of HPAM/Cr(Ⅲ) systems was studied by using Uvvisible spectroscopy method. The gelation process can be distributed into two periods: fast and slow gelation. The results show that the reaction rate of fast gelation is much faster than that of slow gelation and it is crucial to the increase of absorbance.The apparent activation energy of the fast gelation is 6095 kJ·mol-1 inthe 30 to60 ℃range. By using viscosity method with the combination of Uvvisible spectroscopy, we can understand crosslinking dynamics of HPAM/Cr(Ⅲ) systems clearly from macroscopy and microscopy, providing theoretical support for deep profile control in the oil field.

Key words: partially hydrolyzed polyacrylamide(HPAM)； Cr(Ⅲ)； dynamics of crosslinking reaction； rate constant； apparent activation energy

 收稿日期： 20141101

作者简介： 赵晓非（1966—），男，教授.