苏北盆地海安凹陷红1井区防膨注水开发实验研究  

Experiment research on anti-swelling agent in water injection exploitation in Hong 1 Well Area

作　　者：尹先清[1] 于宝石 孙芳[1] 曹红英 彭丰卫 寇显富 罗觉生[1] 

机构地区：[1]长江大学,湖北荆州434023 [2]中国石油浙江油田公司,浙江杭州310023 [3]北京中油石油技术有限公司,北京100083

出　　处：《海洋石油》2011年第4期77-79,共3页Offshore Oil

摘　　要：在注水油田开发过程中,防止注水引起储层黏土膨胀是非常重要的。苏北油区红1井区储层岩石的水敏指数为0.43,临界矿化度为6 000 mg/L,表现为中等偏强水敏,储层能量不足,油层压力低,地层水型为CaCl2,总矿化度111 643.71 mg/L。文章结合拟注入的清水,研究了三种防膨剂在不同温度下的防膨率,其中1#防膨剂使用浓度为1.5%时其防膨率达到88%,在现场得到应用。To prevent the reservoir clay swelling which caused by water injection was essential in the process of water injection exploita- tion. According to the study on reservoir bed rocks of Hong 1 well area in Subei Basin, the water sensitive index is 0.43 and critical mineral salt concentration is 6 000 mg/L, it assumed as follows： medium-high water sensitivity, shortage of energe in reservoir bed, low pressure in oil measures, the formation water of Hong 1 formation is CaC12 with the total mineral concentration of 111 643.71 rag/ L. Combined with proposed injection of sweeping fluid, the anti-swelling rate among three types of anti-swelling agents under different temperatures was studied. It suggested that while the concentration of 1# anti-swelling agent was 1.5%, the anti-swelling rate could be up to 88% , so 1# anti-swelling agent was used in Hong 1 well area .

关 键 词：敏感性储层 防膨注水 防膨剂 红1井区 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]