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Appraising the impacts of SiO2, ZnO and TiO2 nanoparticles on rheological properties and shale inhibition of water-based drilling muds

Esfandyari Bayat, A ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.colsurfa.2019.123792
  3. Publisher: Elsevier B.V , 2019
  4. Abstract:
  5. In recent decades, utilizing of water-based muds (WBMs) in drilling oil and gas wells is ever increasing comparing to oil-based muds and synthetic-based muds due to the lower environmental issues. However, the main drawbacks with WBMs are rheological properties inefficiency and shale swelling which have caused attentions turn to improvement of WBMs’ rheological properties. In this study, the effects of various nanoparticles (NPs) namely titanium dioxide (TiO2), silicon dioxide (SiO2), and zinc oxide (ZnO) on improving rheological properties and shale recovery rate of a WBM sample at two temperatures (25 and 50 °C) were investigated. The concentrations of NPs in the base mud were set at 0.01, 0.05, 0.1 and 0.5 wt%. The results revealed that by adding NPs, the plastic viscosity (PV) of base mud was noticeably increased at the both temperatures. The optimum concentration of all NPs for increasing PV was found to be 0.01 wt%. Furthermore, by increasing concentration of ZnO and SiO2 NPs up to 0.5 wt%, the base mud yield point value was considerably risen to around 13.3%, while by increasing concentration of TiO2 NPs, the mud yield point values were reduced to 23.5 and 20.2 (lb/100 ft2) at 25 and 50 °C, respectively. The optimum ZnO, TiO2, and SiO2 NPs concentrations for this purpose were found to be 0.05, 0.01, and 0.1 wt%, respectively. Moreover, ZnO and SiO2 NPs at concentrations below 0.05 wt% had the best performances for filtration loss control. The related reason is higher stability of these NPs in the aqueous phase and consequently, better mud cake pores filling act by them which caused the mud cakes permeabilities were noticeably reduced. Besides that, SiO2 NPs caused the highest 10 s and 10 min gel strength values and ZnO and TiO2 NPs in order had the lowest 10 s and 10 min gel strength values at all applied concentrations and temperatures. Finally, by increasing concentrations of all NPs, shale recovery rates have noticeably risen comparing to the base mud. SiO2, ZnO and TiO2 NPs in order were successful additives for shale recycling. © 2019 Elsevier B.V
  6. Keywords:
  7. Rheological properties ; Shale recovery ; Water-based mud ; Additives ; II-VI semiconductors ; Infill drilling ; Nanoparticles ; Oil well drilling ; Recovery ; Rheology ; Risk management ; Silica ; Silicon oxides ; SiO2 nanoparticles ; TiO2 nanoparticles ; Titanium dioxide ; Zinc oxide ; Environmental issues ; Nanoparticle (NPs) ; Optimum concentration ; Rheological property ; Synthetic-based muds ; Titanium dioxides (TiO2) ; Water-based drilling ; Water-based muds ; Shale ; Silica nanoparticle ; Titanium dioxide nanoparticle ; Zinc oxide nanoparticle ; Chemical structure ; Electricity ; Energy dispersive X ray spectroscopy ; Experimental test ; Field emission scanning electron microscopy ; Flow kinetics ; Offshore oil industry ; Oil and gas field ; Oil industry ; Plastic viscosity ; Priority journal ; Sedimentation ; Shear rate ; Shear stress ; Suspension ; Temperature ; Thermostability ; Transmission electron microscopy ; Viscosity ; X ray diffraction ; Zeta potential
  8. Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects ; Volume 581 , 2019 ; 09277757 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0927775719307800