Boyou, Natalie VanessaIsmail, IsshamWan Sulaiman, Wan RosliHaddad, Amin SharifiHusein, NorhafizuddinHui, Heah ThinNadaraja, Kathigesu2020-01-172020-01-172019-05Boyou, N V, Ismail, I, Wan Sulaiman, W R, Haddad, A S, Husein, N, Hui, H T & Nadaraja, K 2019, 'Experimental investigation of hole cleaning in directional drilling by using nano-enhanced water-based drilling fluids', Journal of Petroleum Science and Engineering, vol. 176, pp. 220-231. https://doi.org/10.1016/j.petrol.2019.01.0630920-4105RIS: urn:47CA3E2466CCEBEFB28D3293FEE85AF9Mendeley: d0dab60f-f1c8-3d30-bb25-8000c9e5063dhttps://hdl.handle.net/2164/13530The authors wish to thank the Ministry of Higher Education, Malaysia and Universiti Teknologi Malaysia for funding this project under grants with cost center and reference numbers of Q.J130000.2646.15J52 (PY/2017/01823), Q.J130000.2546.14H83 (PY2016/06266) and R.J130000.7651.4C195 (PY/2018/03001). We are also grateful to Ainuddin Wahid Endowment Fund for providing the necessary support to accomplish this research. Also, the support from the School of Engineering at the University of Aberdeen UK to complete this work is appreciated.128708575engDirectional drillingHole cleaningCuttings transport efficiencyNano-enhanced drilling fluidsnanoparticlescuttings-transportperformancemudTA Engineering (General). Civil engineering (General)TAJournal article10.1016/j.petrol.2019.01.063http://www.mendeley.com/research/experimental-investigation-hole-cleaning-directional-drilling-using-nanoenhanced-waterbased-drilling-1176