Oil & gas journal/Oil and gas journal · 1996 · 18 citations · 0 references
EngineeringPetroleum EngineeringDrillingDrilling EngineeringHydraulic EngineeringDrilling FluidsDrilling HydraulicsDrilling OperationsWell HydraulicsWell ModelingWellbore HydraulicsCementingCirculationDrilling Fluid EngineeringDrilling Fluid HydraulicsDrilling Fluid RheologyDrilling Fluids AnalysisFlow Regime AnalysisPressure Losses
A new calculation method can determine the state of flow and pressure losses, for all ranges of flow, for a yield-pseudoplastic drilling or cementing fluid. This method can evaluate the flow regimes without considering the fluid density as a determinant parameter. This method uses parameters related to fluid rheology, average flow velocity, and the geometry of the hydraulic circuit for conventional drilling and cementing conditions. Data from circulation tests in a well in Southern Italy have correlated well with calculated data using these equations. This paper reviews the assumptions and considerations needed to properly model the flow of drilling fluid and well cements.