注聚过程中预交联部分水解聚丙烯酰胺凝胶颗粒的防窜性能  

Channeling prevention performance of pre-crosslinked gel particles of partially hydrolyzed polyacrylamide during polymer injection

作　　者：赵修太[1] 闫国峰[1] 李宏[1] 李超群[1] 宋奇[1] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266555

出　　处：《化学研究》2012年第2期64-67,72,共5页Chemical Research

摘　　要：针对地层非均质性所造成的注聚过程中聚合物的窜流,研究了东营预交联凝胶颗粒(DY)和辽河预交联凝胶颗粒(LH)的膨胀性能和封窜性能.结果表明,与LH相比,膨胀倍数合适并具有一定强度和黏弹性的DY具有更好的防窜性能,其突破压力为0.18 MPa/0.09m;二者使得高渗透层和低渗透层的采收率分别提高至20.26%和53.75%.With a view to the polymer crossflow caused by heterogeneity of stratum during po-lymer flooding process,the swelling behavior and channel blocking behavior of two kinds of pre-crosslinked gel particles of partially hydrolyzed polyacrylamide（DY and LH） were investigated.Results show that DY with some particle strength and viscoelasticity as well as a proper expansion multiple possesses better channeling prevention performance than LH,and its breakthrough pressure measured for cores in parallel is 0.18 MPa/0.09 m.Besides,LH and DY are able to increase the recoveries of high and low permeability layers to 20.26% and 53.75%,respectively.

关 键 词：部分水解聚丙烯酰胺 预交联凝胶颗粒 聚合物驱 防窜性能 

分 类 号：TE39[石油与天然气工程—油气田开发工程]