化学驱油过程中部分水解聚丙烯酰胺的二级结构研究  

Studies on the Secondary Structure of Partially HydrolyzedPoly(acrylamide) in the Process of Chemical Oil Recovery

作　　者：廖广志[1] 周吉生[2] 刘凤岐[2] 马季铭[1] 

机构地区：[1]北京大学化学与分子工程学院,北京100871 [2]吉林大学化学学院,长春130023

出　　处：《高等学校化学学报》2003年第8期1519-1521,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 0 2 740 14 )资助

摘　　要：The secondary structure parameters of partially hydrolyzed poly(acrylamide)(HPAM) in the process of chemical oil recovery have been determined by means of GPC-light scattering cooperation. It was found that the mean molecular mass of HPAM had decreased to 4 to 8 times, the molecular mass distribution of HPAM became broad. It has been deduced that the molecular mass decrease of HPAM results from the HPAM degradation and the mechanical degradation is a determinant because the molecular mass distributions of HPAM after degradation were narrower than the results estimated with the random degradation theory. The chain flexibility somewhat decreased when HPAM solution flowed in underground sandstones in the period of 6 to 8 months, that is, (<S 2> n/<M> n) 1/2 increased from original 0.065 to 0.075 for HPAM in flooding 2 and 4 years and 0.081 for 6 years, which maybe imply HPMA further hydrolyzed under the underground weak basic condition of the oilfield.The secondary structure parameters of partially hydrolyzed poly(acrylamide)(HPAM) in the process of chemical oil recovery have been determined by means of GPC-light scattering cooperation. It was found that the mean molecular mass of HPAM had decreased to 4 to 8 times, the molecular mass distribution of HPAM became broad. It has been deduced that the molecular mass decrease of HPAM results from the HPAM degradation and the mechanical degradation is a determinant because the molecular mass distributions of HPAM after degradation were narrower than the results estimated with the random degradation theory. The chain flexibility somewhat decreased when HPAM solution flowed in underground sandstones in the period of 6 to 8 months, that is, (<S 2> n/<M> n) 1/2 increased from original 0.065 to 0.075 for HPAM in flooding 2 and 4 years and 0.081 for 6 years, which maybe imply HPMA further hydrolyzed under the underground weak basic condition of the oilfield.

关 键 词：化学驱油 水解 聚丙烯酰胺 二级结构 聚合物驱油 油田 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]