CDG体系的深度调剖性能研究  

The Performance of CDG System in Deep Profile Controlling

作　　者：李宜强[1] 计秉玉[2] 李景岩[3] 黄延章[1] 

机构地区：[1]中科院渗流力学研究所 [2]大庆油田有限责任公司 [3]大庆油田有限责任公司第五采油厂

出　　处：《石油与天然气化工》2005年第5期401-404,共4页Chemical engineering of oil & gas

摘　　要：对三种聚合物配制的CDG体系进行粘度和转变压力测定,发现三种CDG体系在配制15天后均能达到100mPa.s或以上粘度及0.05MPa以上的转变压力;在短岩心动态实验中,CDG体系的阻力系数和残余阻力系数都上升较高,说明了CDG体系可以有效的成胶并具有较长的凝结时间,达到需要的注入剂量和凝胶强度,满足实验要求。采用优选的配方2号HPAM,相对分子质量1300万,清水浓度500mg/L,聚铝比30∶1,进行有、无隔层的非均质油藏深度调剖驱油实验,表明逐步增大封堵深度可以进一步提高油层采收率。The viscosity and transmission pressure of CDG systems were measured to 100 mPa. s and 0.05MPa after 15 days, and the resistance coefficient and the residual resistance coefficient had ascended sharply during the water flooding experiments in short - size cores. The results showed that the CDG systems were able to make gelation effectively and hold an enough long time, the a-mount of injection and the strength of gel could be approached. The choiced formula was: No. 2 HPAM, 13, 000,000 of molecular weight, 500 mg/L of neat water and 30: 1 of the ratio of polymer to aluminum. Deep profile controlling oil - displacement experiments were carried out in the heterogeneous models with or without separation layer respectively. It was indicated that the oil recovery could be further enhanced as the sealed depth had been increased.

关 键 词：CDG 转变压力 非均质油藏 深度调剖 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程] TS202.3[轻工技术与工程—食品科学]