石油钻采工艺2009，Vol.31Issue(5)：81-84,4.
盐浓度对交联聚合物溶液剪切增稠现象的影响
Influence of salt concentration on shear thickening properties of LPS
董朝霞 1宋锦宏 1林梅钦 1李明远1
作者信息
- 1. 中国石油大学提高采收率研究中心,北京,102249
- 折叠
摘要
Abstract
Linked polymer solution (LPS) is a new type of profile control agent, and its flow behavior in oil reservoirs is one of the key factors influencing profile control effect. The shearing function of porous media in oil reservoirs is simulated using the Ostwald viscosity meter. The variation of LPS flow behavior is studied under different salt concentrations and repeated shearing conditions. Combined with rheology, the correlation between the phenomenon of shear thickening and the dispersion of LPS midline group (LPC) is analyzed.Experimental results show that within a certain concentration range of NaCl, LPS system gets shear thickening at the definite reaction time,with the increase of NaCl concentration, while the reaction time required for shear thickening is shortened. It also shows that the ratio of intramolecular cross-linking of polymer and cross-linking agents and the number of LPC increase with the increase of salt concentration.This provides a new method feasible for the study of cross-linking process of low-concentration polymer cross-linking systems.关键词
交联聚合物溶液/部分水解聚丙烯酰胺/柠檬酸铝/盐质量浓度/剪切增稠Key words
linked polymer solution/ partially hydrolytic polyacrylamide/ aluminum citrate/ salt concentration/ shear thickening分类
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董朝霞,宋锦宏,林梅钦,李明远..盐浓度对交联聚合物溶液剪切增稠现象的影响[J].石油钻采工艺,2009,31(5):81-84,4.
