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Journal of Nanomaterials
Volume 2016, Article ID 8716257, 9 pages
http://dx.doi.org/10.1155/2016/8716257
Research Article

A Novel Nanodrag Reducer for Low Permeability Reservoir Water Flooding: Long-Chain Alkylamines Modified Graphene Oxide

1State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
2Research Institute of Natural Gas Technology, Petro China, Chengdu 610213, China
3Sichuan Chuangang Group Corporation, Limited, Chengdu 610017, China
4Sichuan Province Key Laboratory of Oil and Gas Reservoir of Applied Chemistry, Southwest Petroleum University, Chengdu 610500, China

Received 21 January 2016; Accepted 4 April 2016

Academic Editor: Victor M. Castaño

Copyright © 2016 Hong Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Chemical modification of graphene oxide (GO) by grafting hydrophobic chains on the surface has drawn much attention nowadays in the academic world, and it was suggested that modified GO could lead to new functionalized materials with specific structure and different properties. In this paper, modified GO (M-GO) were synthesized by chemically grafting alkylamines with varying chain lengths on the graphene oxide surface. Successful grafting of alkylamines was confirmed using Fourier transform infrared (FTIR) spectra, X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscope (SEM), and Raman spectroscopy measurements. In addition, we investigated the properties of M-GO as nanodrag reducer in low permeability reservoir water flooding. Water contact angle (CA) measurements revealed that the hydrophobic nature of GO depended on the chain length of the grafted alkylamines. And flooding experiments showed that the hexadecylamine- and octadecylamine-modified GO had an ability to reduce water injection pressure and improve water-phase permeability of the low permeability reservoirs during water flooding. So the M-GO would have potential applications in oilfield exploitation.