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Environmental considerations of low-temperature drilling fluids
2014
Annals of Glaciology
The introduction of low-temperature fluid into boreholes drilled in ice sheets helps to remove drilling cuttings and to prevent borehole closure through visco-plastic deformation. Only special fluids, or mixtures of fluids, can satisfy the very strict criteria for deep drilling in cold ice. The effects of drilling fluid on the natural environment are analyzed from the following points of view: (1) occupational safety and health; (2) ozone depletion and global warming; (3) chemical pollution;
doi:10.3189/2014aog65a226
fatcat:5bpoumsy7fganbx5rsrtt5re2i