![]() ![]() The novel results show that nanoparticles do significantly enhance the rheological and filtration characteristics of drilling fluids. ![]() ![]() For that scenario, the mud-cake thickness is varied, and the filtration properties of the drilling fluids are measured as an indicator of potential well-diameter reduction, caused by mud cake, adjacent to permeable formations. The performance of each drilling fluid type is evaluated with respect in terms of its ability to reduce mud cake thickness and fluid loss thereby inhibiting differential-pipe-sticking. Additionally, the mud weight, plastic viscosity, apparent viscosity, yield point, primary and secondary gelatinization properties, pH, and filtration properties of the various drilling fluids studied are also measured and compared. The suspension properties of drilling fluids containing pure and polymer-treated (partially-hydrolyzed polyacrylamide (PHPA) or Xanthan gum) clay nanoparticles are compared withthose of a conventional water-and-bentonite-based drilling fluid, used as the referencesample. ![]()
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