1 Experimental study of rheological properties and filtration and thermal conductivity of water-based drilling fluid using SiO2 and Al2O3 nanoparticles https://jourcc.com/index.php/jourcc/article/view/jcc511 10.52547.jcc.5.1.1 1 In the present work, enhanced WBM was prepared using SiO2 and Al2O3 nanofluids (size 50 nm) in aqueous solution of bentonite as a base fluid and investigated as an additive on filtration and rheological properties and thermal conductivity at three temperatures of 27, 50, 80 °C by standard methods in of WBM. The nanoparticles were synthesized by the hydrothermal method. The nanofluids are prepared in different concentrations of 0.01, 0.03, 0.05, 0.1, 0.5, and 1 wt% in base fluid. Experimental data with flow curves for different NWBMs are fitted to rheological drilling fluid models (power law model, Bingham plastic model, and Herschel-Bulkley model). According to the results, NWBDF follow Herschel Bulkley's model for rheological behavior. All specimens show shear thinning behavior Because, with increasing apparent viscosity, the shear rate decreases. After adding 1wt% of SiO2 nanoparticles, the plastic viscosity (PV) increased to 14 ± 0.02 cP. Nanoparticles at different concentrations reduced the filtration efficiency of bentonite muds. Darcy's law was used to compare the permeability of clay cakes and showed that nanofluids are more impermeable cakes than the base fluid. Thermal conductivity in two samples was significantly improved, especially in the presence of Al2O3 nanoparticles at 80 °C. 1 5 Mehdi Mousavi-Kamazani Semnan University Iran M.Mousavi@semnan.ac.ir Nahid Kalhori Semnan University Iran info@jourcc.com Faramarz Hormozi Semnan University Iran info@jourcc.com SiO2 and Al2O3 nanoparticles Hydrothermal Water-based Mud Rheology properties Filtration properties Thermal conductivity Article1.pdf [1] J. Abdo, M. Haneef, Nano-enhanced drilling fluids: pioneering approach to overcome uncompromising drilling problems, Journal of Energy Resources Technology 134(1) (2012).##[2] S.I. Reilly, Z. Vryzas, V.C. Kelessidis, D.I. Gerogiorgis, First-principles rheological modelling and parameter estimation for nanoparticle-based smart drilling fluids, Computer Aided Chemical Engineering, Elsevier2016, pp. 1039-1044.##[3] M. Huskić, M. Žigon, M. Ivanković, Comparison of the properties of clay polymer nanocomposites prepared by montmorillonite modified by silane and by quaternary ammonium salts, Applied clay science 85 (2013) 109-115.##[4] M. Sadeghalvaad, S. Sabbaghi, The effect of the TiO2/polyacrylamide nanocomposite on water-based drilling fluid properties, Powder Technology 272 (2015) 113-119.##[5] G. Cheraghian, Q. Wu, M. Mostofi, M.-C. Li, M. Afrand, J.S. Sangwai, Effect of a novel clay/silica nanocomposite on water-based drilling fluids: Improvements in rheological and filtration properties, Colloids and Surfaces A: Physicochemical and Engineering Aspects 555 (2018) 339-350.##[6] M.-C. Li, Q. Wu, K. Song, S. Lee, C. Jin, S. Ren, T. Lei, Soy protein isolate as fluid loss additive in bentonite–water-based drilling fluids, ACS applied materials and, interfaces 7(44) (2015) 24799-24809.##[7] A. Paknejad, J.J. Schubert, M. Amani, Key Parameters in Foam Drilling Operations, IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference and, Exhibition, OnePetro, 2009.##[8] A. Aftab, A.R. Ismail, Z. Ibupoto, H. Akeiber, M. Malghani, Nanoparticles based drilling muds a solution to drill elevated temperature wells: A review, Renewable and Sustainable Energy Reviews 76 (2017) 1301-1313.##[9] A. Benslimane, I.M. Bahlouli, K. Bekkour, D. Hammiche, Thermal gelation properties of carboxymethyl cellulose and bentonite-carboxymethyl cellulose dispersions: Rheological considerations, Applied Clay Science 132 (2016) 702-710.##[10] S. Jilani, H. Menouar, A. Al-Majed, M. Khan, Effect of overbalance pressure on formation damage, Journal of Petroleum Science and Engineering 36(1-2) (2002) 97-109.##[11] M.V. Kök, B. Bal, Effects of silica nanoparticles on the performance of water-based drilling fluids, Journal of Petroleum Science and Engineering 180 (2019) 605-614.##[12] N.M. Taha, S. Lee, Nano graphene application improving drilling fluids performance, International petroleum technology conference, OnePetro, 2015. ##[13] P. Dejtaradon, H. Hamidi, M.H. Chuks, D. Wilkinson, R. Rafati, Impact of ZnO and CuO nanoparticles on the rheological and filtration properties of water-based drilling fluid, Colloids and Surfaces A: Physicochemical and Engineering Aspects 570 (2019) 354-367.##[14] M. Al-Yasiri, A. Awad, S. Pervaiz, D. Wen, Influence of silica nanoparticles on the functionality of water-based drilling fluids, Journal of Petroleum Science and Engineering 179 (2019) 504-512.##[15] S. Ghanbari, E. Kazemzadeh, M. Soleymani, A. Naderifar, A facile method for synthesis and dispersion of silica nanoparticles in water-based drilling fluid, Colloid and Polymer Science 294(2) (2016) 381-388.##[16] S.S. Hassani, A. Amrollahi, A. Rashidi, M. Soleymani, S. Rayatdoost, The effect of nanoparticles on the heat transfer properties of drilling fluids, Journal of Petroleum Science and Engineering 146 (2016) 183-190.##[17] J.K.M. William, S. Ponmani, R. Samuel, R. Nagarajan, J.S. Sangwai, Effect of CuO and ZnO nanofluids in xanthan gum on thermal, electrical and high pressure rheology of water-based drilling fluids, Journal of Petroleum Science and Engineering 117 (2014) 15-27.##[18] N. Kalhori, M. Mousavi-Kamazani, F. Hormozi, Effect of CeVO4/Al2O3/rGO nanocomposite on rheological properties and thermal conductivity of water-based drilling fluid, Journal of Petroleum Science and Engineering (2022) 111312.##[19] A. Piroozian, I. Ismail, Z. Yaacob, P. Babakhani, A.S.I. Ismail, Impact of drilling fluid viscosity, velocity and hole inclination on cuttings transport in horizontal and highly deviated wells, Journal of Petroleum Exploration and Production Technology 2(3) (2012) 149-156.