eprintid: 8586 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/85/86 datestamp: 2023-11-09 16:20:30 lastmod: 2023-11-09 16:20:30 status_changed: 2023-11-09 16:13:00 type: conference_item metadata_visibility: show creators_name: Chai, Y.H. creators_name: Yusup, S. creators_name: Chok, V.S. creators_name: Irawan, S. creators_name: Singh, J.D.B.S. creators_name: Chin, B.L.F. title: Comparison of rheological properties of graphene / carbon nanotube hydrogenated oil based biodegradable drilling fluid ispublished: pub keywords: Carbon nanotubes; Engineers; Graphene; Hydrogenation; Nanofluidics; Nanoparticles; Nanotubes; Rheology; Shear deformation; Shear stress; Stress analysis; Thermodynamic properties; Viscosity; Well drilling; Yarn; Yield stress, Experimental investigations; Hydrogenated oil; Nanoparticle loadings; Newtonian behaviours; Operating temperature; Particle loading; Rheological behaviour; Rheological property, Drilling fluids note: cited By 7; Conference of 29th Symposium of Malaysian Chemical Engineers, SOMChE 2016 ; Conference Date: 1 December 2016 Through 3 December 2016; Conference Code:128592 abstract: An experimental investigation has been carried out to investigate the rheological properties of graphene / carbon nanotube hydrogenated oil based biodegradable drilling fluid at different nanoparticle loadings. The rheological behaviours of interest in this investigation are the viscosity and shear stresses of two different nanofluids respectively. The limiting parameters in this study are 25 ppm, 50 ppm and 100 ppm weight concentration at operating temperature ranging from 30°C to 50°C. Both nanofluids are subjected to shear rate ranging from 0 - 140 s-1 for comparison of rheological behaviours. Both samples' viscosity reduces to base fluid's viscosity value at higher shear rate with carbon nanotube-hydrogenated oil yielding higher viscosity compared to graphene-hydrogenated oil for all nanoparticle loadings at lower shear rate. Shear stress analysis also shows similar results with carbon nanotube based samples showing higher stress between the two at all particle loadings. Both samples show Newtonian behaviour that is similar to base fluid even at higher particle loadings. Analysis revealed both nanofluids yields close to zero yield stress even with the presence of graphene or carbon nanotube particles. The significance of this study shows that addition of low nanomaterials for enhancement of drilling fluids can improve its thermophysical properties without compromising the quality of drilling fluids such as viscosity and shear stress properties. © Published under licence by IOP Publishing Ltd. date: 2017 publisher: Institute of Physics Publishing official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85023168855&doi=10.1088%2f1757-899X%2f206%2f1%2f012042&partnerID=40&md5=51f126a28fd7ad252adbdd39ad2dc7a1 id_number: 10.1088/1757-899X/206/1/012042 full_text_status: none publication: IOP Conference Series: Materials Science and Engineering volume: 206 number: 1 refereed: TRUE issn: 17578981 citation: Chai, Y.H. and Yusup, S. and Chok, V.S. and Irawan, S. and Singh, J.D.B.S. and Chin, B.L.F. (2017) Comparison of rheological properties of graphene / carbon nanotube hydrogenated oil based biodegradable drilling fluid. In: UNSPECIFIED.