DOI: 10.36347/sjet

Pages: 687-692

The objective of designing drilling slurry for extreme and deep environment (HPHT wells) is to develop high performance drilling fluid system in well bore to achieve zonal isolation. The primary objective of drilling slurry is to improve rheological properties and displacement efficiency of drilling fluid system. Oil well slurries depend on its homogeneity of additive concentrations, quality and quantity to contribute the placement and success of a well drilling cementing operation. This experimental research investigated the High Performance Drilling Fluid System (HPDFS). This watery drilling slurry is prepared with adding ferric oxidenano particles into 21% silica foam to observe the rheological properties at different concentrations of nano particle. Results indicate the prevention effect of Nano particles in the amount of yield stress with temperatures in range of 20 C to 80 C. The decrease of 10% and 6% in the amount of plastic viscosity and apparent viscosity is observed, respectively.