We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
耐高温高盐聚合物桥塞体系研究与性能评价.
- Authors
伍亚军; 王翔; 郭继香; 李亮; 陈金梅; 何龙; 张世岭
- Abstract
The leakage problem in Tahe oilfield construction site is outstanding. According to the characteristics of high temperature and high salinity in the leakage layer, a high temperature and high salt resistant polymer bridge plug system is developed, and the breakthrough pressure, rheology and microstructure are evaluated and analyzed. The breakthrough pressure evaluation showed that the gel breakthrough pressure reached 2434 kPa/ m, the addition of nano-SiO2 made the system have good temperature resistance and pressure sealing ability. The rheological evaluation results showed that when the shear frequency changed to 0.01 - 10 Hz, the polymer bridge plug system showed elastic fluid characteristics, the loss angle increased from 11.51 degrees to 24.67 degrees, and the gel properties changed from elastomer to viscoelastic body. When the shear frequency was 1 Hz, the gel elastic modulus was 782 Pa, which belonged to strong gel. The deformation recovery time is 400 s, and the strain/ deformation ability is good. The microstructure analysis shows that the gel surface is rough, the structure is compact, and the tree mesh size is between 9.83 - 14.58 μ.m. Nano-SiO2 particles form crosslinking network as crosslinking point and polymer, and also adhere to dendritic structure to enhance mechanical tensile properties of the system. The macroscopic performance is good ductility and tolerance of the gel.
- Publication
Applied Chemical Industry, 2021, Vol 50, Issue 11, p2989
- ISSN
1671-3206
- Publication type
Article