Abstract In the paper, it is demonstrated how a Herschel–Bulkley fluid model, where parameters are selected from relevant shear rate range of flow and parametrically independent, can be used for pressure loss calculations. The model found to provide adequate predictions axial in an annulus inner cylinder does not rotate. It described one simplify slot approximation using (Founargiotakis model)....

Abstract Overbalanced drilling is the most common technique; nevertheless, it has several disadvantages such as formation damage, mud losses, and stuck pipes; challenges that are in high permeability zones highly fractured formations. To overcome those issues, underbalanced method could be implemented. The (UBD) technique widely utilized hard, under pressure, depleted, fractured/vuggy Low-densi...

This research investigates factors influencing cuttings transport efficiency in air drilling operations, aiming to understand the underlying mechanisms, identify critical factors, and optimize parameters for enhanced performance. The methodology includes a literature review, computational fluid dynamics (CFD) simulations, sensitivity analysis of velocity, properties, size, outlet pressure. CFD ...

Fluids are present throughout Earth’s crust and act as a primary medium of exchange between Earth’s interior lithosphere and hydrosphere Flowing fluids carry enormous fluxes of energy magma and solutes be tween these reservoirs Fluids contribute to production of continental crust generation of explosive volcanism lubrication of plate boundary faults formation of hydrates and mineral resources a...