|Title||Viscosity and density of a two-phase drilling fluid|
|Author(s)||Olivier Alemany , Mityar H|
Annals of Glaciology
Many ice-core drilling projects expect to reach depths greater than 1000 m. At such depths it is necessary to fill the borehole with a fluid to compensate the ice pressure and avoid the resulting significant hole closure. Knowledge of the ice-chips and drilling-fluid circulation parameters (e.g. flow rate, pressure drop, velocity) is essential for understanding the behaviour of the fluid around the drill and will support drill design through a better parameterization in models. A characterization of the dynamic viscosity and of the density of the ice-chips and drilling-fluid mixture is required to calculate these circulation parameters. The goal of this study is to propose a method to calculate, to a first approximation, both these physical properties. The relationships presented here have been established after experimentation, building on prior assumptions taken from the literature.
|Special Collections||International Workshop on Ice Drilling Technology Series, 6th International Workshop on Ice Drilling Technology|
|Citation||Olivier Alemany , Mityar H ( 2007 ) Viscosity and density of a two-phase drilling fluid. Annals of Glaciology , 47 , 141-146 . doi: 10.3189/172756407786857712|