Improved Water-Based Mud Rheological Properties and Shale-Inhibition Behavior by Using Aluminum Oxide and Iron Oxide Nanoparticles

Abbood, Hasan A.; Shakir, Ibtehal K.

doi:10.30684/etj.2022.134176.1226

	Improved Water-Based Mud Rheological Properties and Shale-Inhibition Behavior by Using Aluminum Oxide and Iron Oxide Nanoparticles
Engineering and Technology Journal
Article 6, Volume 40, Issue 9, 2022, Pages 1171-1178 PDF (730.81 K)
Document Type: Research Paper
DOI: 10.30684/etj.2022.134176.1226
Authors
Hasan A. Abbood^* ; Ibtehal K. Shakir
Chemical Engineering Department/University of Baghdad/Baghdad, Iraq
Abstract
Nanotechnology can be used to develop drilling fluid additives that can improve the drilling fluid's properties. Using two types of nanoparticle (NP) additives in water-based drilling fluids have been studied in this paper. Three major drilling mud systems, namely potassium chloride (KCl) as a basic mud, KCl/aluminum oxide (Al₂O₃) NPs, and KCl/iron (Fe₂O₃) NPs, were prepared and studied for enhancement of rheological properties and shale inhibition. It was found that the drilling mud contained NPs in concentrations of 0.25, 0. 5, 0.75, and 1 g. Al₂O₃ and Fe₂O₃ NPs added to KCl/polymer mud systems resulted in a 50% and 30% change in shale volume, respectively. The results demonstrated that incorporating NPs into the KCL mud system enhanced shale inhibition. Adding NPs to the KCL-WBM increased yield point, plastic viscosity, and gel strength. The COF of KCL-polymer was reduced by 48% and 34% when added Al₂O₃ and Fe2O3 NPs at 0.5 and 0.75g, respectively. When Al₂O₃ and Fe₂O₃ NPs were used, particularly at 1g, the amount of mud filtration decreased from 13.1ml to 8.8 ml and 8.4 ml, respectively. Overall, it was found that adding Al₂O₃ and Fe₂O₃ NPs to the KCl-WBM can improve rheological, swelling, and filtration properties as well as lubrication.
Highlights
Nanoparticles reduced filter loss up 41 and32% by Fe2O3 and Al2O3, respectively. Reduction (COF) between pipe and wellbore up 48 and 34% by Al2O3 and Fe2O3,respectively. Wellbore swelling reduction up 50 and 30% by Al2O3 and Fe2O3, respectively
Keywords
Drilling mud; nanoparticles; Lubrication; Rheological; Swelling

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