肿胀 的
化学工程
材料科学
采出水
含水率
扫描电子显微镜
磁导率
注水(采油)
吸水率
粒径
火花塞
单体
化学
复合材料
石油工程
聚合物
膜
地质学
生物化学
航空航天工程
工程类
作者
Meilong Fu,Junbo Zhang,Guojun Li,Jiani Hu,Peng Chen,Lifeng Chen,Hongping He
出处
期刊:Energies
[MDPI AG]
日期:2022-09-09
卷期号:15 (18): 6619-6619
被引量:1
摘要
Based on the characteristics of low-permeability oil and gas reservoirs and the requirements for profile control and water plugging and for water cut decrease and production increase in the high water cut stage of the middle and late exploitation periods, ultrafine temperature-resistant and salt-tolerant swellable particles DS-1 suitable for low permeability oilfields were prepared by introducing N,N-dimethylacrylamide(DMAA) monomers into the 2-acrylamido-2-methylpropanesulfonic acid (AMPS)/acrylamide(AM)/N,N-dimethylbisacrylamide ternary crosslinking system. The median of initial particle size was 22.00 μm, and is compatible with formation pore throats. A static water absorption experiment showed that the particles can still maintain a high swelling ratio after 15 days at a high temperature and high mineralization degree, so they have long-term stability. The physical and chemical properties of the particles were analyzed microscopically using the infrared spectrum method and the scanning electron microscope (SEM) method. A dynamic displacement experiment confirmed that the particles can effectively plug dominant channels of waterflooding, increase the injection pressure, and improve the interlayer and intralayer heterogeneity. In the field experiment, the swellable particles DS-1 were used as a main slug for water plugging operations, and a good water cut decrease and oil production increase effect was obtained.
科研通智能强力驱动
Strongly Powered by AbleSci AI