An Investigation of Nanoparticles Properties on Oil Based DrillingFluid Characteristics: A Review

The depletion of many oil and gas reservoirs and the increase in demand for energy caused us to paymore attention to unconventional reservoirs. Up to now, many researchers used different Nanoparticles(NPs) for improving drilling fluid characteristics and overcoming drilling operation problems. In thisresearch, the effect of NPs on different parameters of drilling fluid is investigated including rheologicalbehavior, filtration volume, lubricity and thickness of mud cake, wellbore stability, thermal effect, andstability of emulsion muds. various effecting factors of drilling fluid such as PH, temperature, andDifferent properties such as concentration, type, size, and shape of NPs affect nanoparticles efficiency.In this paper, the effect of these factors on the characteristics of oil-based muds has been investigated.According to the literature, it can be concluded that in comparison to usual additives that are used inthe drilling industry, nanoparticles are effective for not only improving drilling fluid characteristics butalso overcoming drilling operation problems.