An Inves tigation of Nanoparticles Properties on Oil Based Drilling Fluid Characteris tics: A Review

The depletion of many oil and gas reservoirs and the increase in demand for energy caused us to pay more attention to unconventional reservoirs. Up to now, many researchers used different Nanoparticles (NPs) for improving drilling fluid characteris tics and overcoming drilling operation problems. In this research, the effect of NPs on different parameters of drilling fluid is inves tigated including rheological behavior, filtration volume, lubricity and thickness of mud cake, wellbore s tability, thermal effect, and s tability of emulsion muds. Various effecting factors of drilling fluid such as PH, temperature, and Different properties such as concentration, type, size, and shape of NPs affect nanoparticles efficiency. In this paper, the effect of these factors on the characteris tics of oil-based muds has been inves tigated. According to the literature, it can be concluded that in comparison to usual additives that are used in the drilling indus try, nanoparticles are effective for not only improving drilling fluid characteris tics but also overcoming drilling operation problems