...1 PAPER 2009-042 Frictional Pressure Loss Estimation of Non-Newtonian Fluids in Realistic Annulus with Pipe Rotation M. E. OZBAYOGLU1 Middle East Technical University, Petroleum & Natural Gas Engineering Dept. M. SORGUN Middle East Technical University, Petroleum & Natural Gas Engineering Dept. 1...

... calculations for different parts of the system. This study provides guidelines to predict frictional losses with higher accuracy. Introduction While drilling fluid is circulated in the annulus, it exerts additional pressure on the wellbore. If frictional pressure losses in the annulus are not determined...

... the flow pattern and frictional pressure losses of two-phase fluids flowing through horizontal annular geometries using Artificial Neural Networks (ANN) rather than proposing a mechanistic model. Experimental data collected from experiments conducted at Middle East Technical University, Petroleum...

... formulation flow rate temperature condition flow regime bingham plastic drilling fluid property drilling fluid chemistry gradient frictional pressure loss drilling fluids and materials pressure gradient upstream oil & gas 1 PAPER 2007-125 New Improvements on Managed Pressure Drilling B...

... for their rheological parameters and analyzed using three different wellbore configurations for their APL gradients. Each fluid was analyzed using the Bingham-Plastic and Power-Law models and their results compared. Also, the effect of high temperature (up to 150 °F) on frictional pressure losses was also studied...