聚合物不可入孔隙体积影响因素研究  

Influencing factors of inaccessible pore volume of polymer flooding

作　　者：徐婷[1] 李秀生[2] 莫文丽[3] 赵福麟[4] 鲍霞 

机构地区：[1]中石化石油勘探开发研究院油藏工程所,北京100083 [2]石油大学石油天然气工程学院,北京102249 [3]中原油田钻井工程技术研究院,河南濮阳457001 [4]石油大学石油工程学院,山东东营257061 [5]中石化胜利股份公司胜利采油厂三矿工程技术站,山东东营257041

出　　处：《石油大学学报（自然科学版）》2004年第3期56-59,共4页Journal of the University of Petroleum,China(Edition of Natural Science)

基　　金：国家重点基础研究专项资助 (G19990 2 2 5 0 9)

摘　　要：采用双段塞法分析了部分水解聚丙烯酰胺 (HPAM)的相对分子质量、岩心孔隙分布、温度及矿化度对聚合物的不可入孔隙体积 (VIP)的影响规律。分析结果表明 ,VIP随HPAM的相对分子质量的增大而增大 ;VIP随着岩心平均孔隙半径增大、温度升高、矿化度增加而减小。在不断变化的地层条件下 ,HPAM的VIP可能出现高值的现象 ,这将严重影响聚合物驱的波及系数 ,从而使聚合物驱的原油采收率降低。The effects of different relative molecular weight of partially hydrolyzed polyacrylamide (HPAM), pore size distributions of cores, different temperatures and salinity on the inaccessible pore volume (V_(IP)) of HPAM were studied by using double-slug method. The analysis results proved that V_(IP) increased with the increment of the relative molecular weight of HPAM and decreased gradually with the increase of the average pore radius of core, temperature and salinity. Under the varying conditions of formation, the increment of the V_(\%IP) of HPAM may be prominent, which has a great influence on the sweep coefficient of the polymer flooding and reduce the oil recovery efficiency of polymer flooding.

关 键 词：聚合物驱 双段塞法 聚丙烯酰胺 HPAM 矿化度 三次采油方法 波及系数 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]