eprintid: 12220 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/01/22/20 datestamp: 2023-11-10 03:26:46 lastmod: 2023-11-10 03:26:46 status_changed: 2023-11-10 01:17:10 type: article metadata_visibility: show creators_name: Ibrahim, A. creators_name: Ridha, S. creators_name: Amer, A. creators_name: Shahari, R. creators_name: Ganat, T. title: Influence of degree of dispersion of noncovalent functionalized graphene nanoplatelets on rheological behaviour of aqueous drilling fluids ispublished: pub keywords: Graphene; Infill drilling; Nanostructured materials; Rheology; Shear deformation; Sols; Surface active agents; Suspensions (fluids); Ultraviolet visible spectroscopy; Well drilling, Degrees of dispersions; Functionalized graphene; Graphene nanoplatelets; Non-covalent functionalisation; Rheological behaviour; Thickening properties; UV visible spectroscopy; Water based drilling fluids, Drilling fluids note: cited By 19 abstract: Application of carbon nanomaterials in oil well drilling fluid has been previously studied and was found to enhance its filtration properties. There is a general consensus that addition of colloids in suspension will alter its rheology, i.e., carbon nanomaterials, in this research work; graphene nanoplatelets are hydrophobic materials, which require functionalisation to improve its dispersion in aqueous solution. However, different degrees of dispersion may vary the rheological properties behaviour of drilling fluid. The objective of this study was to characterize the colloidal dispersion of graphene nanoplatelets (GNP) in aqueous solution and its impact on the rheological properties behaviour of water-based drilling fluid. Dispersion of graphene nanoplatelets was achieved through noncovalent functionalisation by means of surfactant attachment. UV-visible spectroscopy was employed to analyze the dispersion of GNP in aqueous solution. The rheological test was carried out using a simple direct-indicating viscometer at six different speeds. Results revealed that the degree of dispersion of GNP using Triton X-100 was generally higher than both SDS and DTAB. Comparison between the rheological properties behaviour of drilling fluid with GNP dispersed using different surfactants shows little to no difference at low shear rates. At high shear rates, however, greater dispersion of GNP shows higher thinning properties while fluid with a low dispersion of GNP exhibited linear behaviour to thickening properties. Copyright © 2019 Arif Ibrahim et al. date: 2019 publisher: Hindawi Limited official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062879578&doi=10.1155%2f2019%2f8107168&partnerID=40&md5=c560ab1334753c3131e5af4ebbf9a5f1 id_number: 10.1155/2019/8107168 full_text_status: none publication: International Journal of Chemical Engineering volume: 2019 refereed: TRUE issn: 1687806X citation: Ibrahim, A. and Ridha, S. and Amer, A. and Shahari, R. and Ganat, T. (2019) Influence of degree of dispersion of noncovalent functionalized graphene nanoplatelets on rheological behaviour of aqueous drilling fluids. International Journal of Chemical Engineering, 2019. ISSN 1687806X