Investigation of melamine derived quaternary as ammonium salt potential shale inhibitor

3rd International Conference on Advances in Energy, Environment and Chemical Engineering

能源学;生态环境科学;化学工业

Yu, Hongjiang^1 ; Hu, Weimin^1 ; Guo, Gang^2,3 ; Huang, Lei^1 ; Li, Lili^1 ; Gu, Xuefan^1 ; Zhang, Zhifang^4 ; Zhang, Jie^1 ; Chen, Gang^1

College of Chemistry and Chemical Engineering, Xi'An Shiyou University, Xi'an

710065, China^1

Research Institute of Oil and Gas Technology, Changqing Oilfield Company, Xi'an

710025, China^2

National Engineering Laboratory of Low-permeability Oil and Gas Field Exploration and Development, Changqing Oilfield Company, Xi'an

710025, China^3

School of Chemistry and Chemical Engineering, Yulin University, Yulin

719000, China^4

关键词: Conventional additives;    Inhibitive properties;    Montmorillonite (MMT);    Particle distributions;    Quaternary ammonium salt;    Reaction conditions;    Temperature resistances;    Water based drilling fluids;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/69/1/012065/pdf
DOI  :  10.1088/1755-1315/69/1/012065

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Melamine, sodium chloroacetate and sodium hydroxide were used as raw materials to synthesize a kind of neutral quaternary ammonium salt (NQAS) as potential clay swelling inhibitor and water-based drilling fluid additive, and the reaction conditions were screened based on the linear expansion rate of bentonite. The inhibitive properties of NQASs were investigated by various methods, including montmorillonite (MMT) linear expansion test, mud ball immersing test, particle distribution measurement, thermogravimetric analysis and scanning electron microscopy etc. The results indicate that NQAS can inhibit expansion and dispersion of clay in water effectively. At the same condition, the bentonite linear expansion rate in NQAS-6 solution is much lower than those of others, and the hydration expansion degree of the mud ball in 0.5% NQAS-6 solution is appreciably weaker than the control test. The compatibility test indicates NQAS-6 could be compatible with the conventional additives in water-based drilling fluids, and the temperature resistance of modified starch was improved effectively. Meanwhile, the inhibitive mechanism was discussed through the particle distribution measurement.