Influence of nanomaterial morphology of guar-gum fracturing fluid, physical and mechanical properties. (15th April 2020)

• Record Type: Journal Article
• Authors: Liu, Jiawen; Wang, Shibin; Wang, Chuan; Zhao, Feng; Lei, Shi; Yi, Huiyong; Guo, Jianchun
• Is Part Of: Carbohydrate polymers. Volume 234(2020)
• Publication Date: 2020-04-15
• Subjects: Guar gum fracturing fluid -- Nano-silica -- Nanohybridization -- Network structure -- Borax -- Hydroxylated carbon nanotubes; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2020.115915
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: Nano-hybrid can improve the properties of guar gum fracturing fluid. Spherical nano-silica has the strongest effect on the properties of guar gum gel. Modified nano-silica plays a nuclear point and skeleton role to enhance the properties of guar gum fracturing fluid. Abstract: Nanosilica, multiwalled carbon nanotubes and graphite powder have different effects on guar gum fracturing fluid because of the different morphologies of these nanomaterials. The results showed that the apparent viscosity, temperature tolerance, elastic modulus and tensile strength of nano-hybrid guar gum fracturing fluids were improved by nanomaterials compared to those properties of blank fracturing fluid (without nanomaterials). However, microscopic analysis by SEM and TEM revealed that different nanomaterials played different roles in the network structure of guar gum fracturing fluid. In terms of micro particle size, modified nano-SiO2 (M-NS) played a nuclear point and skeleton role in the fracturing fluid and obviously enhanced the network structure. Hydroxylated multiwalled carbon nanotubes (MWNTs-OH) and guar gum macromolecular chains were intertwined. Graphene oxide (GO) intercalation entered the guar gum molecular chain and the interaction was relatively weak because of its sheet structure.