AUTHOR=Lv Kaihe , Huang Pan , Zhou Zhishi , Wei Xin , Luo Qi , Huang Ziming , Yan Hui , Jia Han 

TITLE=Study of Janus Amphiphilic Graphene Oxide as a High-Performance Shale Inhibitor and Its Inhibition Mechanism

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 8 - 2020

YEAR=2020

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2020.00201

DOI=10.3389/fchem.2020.00201

ISSN=2296-2646

ABSTRACT=The Janus amphiphilic graphene oxide (JAGO) modified by the dodecylamine in one side of graphene oxide (GO) was investigated for its novel use as a shale inhibitor. JAGO was synthesized through the pickering emulsion template technology and was characterized by Fourier-transform infrared spectra, UV-vis spectra and transmission electron microscopy. Compared with potassium chloride (5%), polyether diamine (2%), and the pristine GO (0.2%), the highest shale recovery rate (75.2% at 80 °C) and the lowest swelling height of Mt-pellets (2.55 mm) in JAGO (0.2%) demonstrated the excellent inhibitive property of JAGO. Furthermore, JAGO also greatly reduced the filtration loss as a perfect plugging agent. Based on the results of X-ray diffraction, contact angle measurements and pressure transmission tests, we proposed that the 2D nano-sheet amphiphilic structure of JAGO, which enable JAGO to be effective both in chemical inhibition and physical plugging, was responsible for its remarkable inhibition performances.