Design Parameters of Hot-Water Drilling Systems

Currently, hot-water drill systems are actively used to observe ocean cavities under ice shelves, detect the effects of climate change on glaciers, retrieve sub-ice seabed samples, study the internal ice structure with video imaging, log temperatures, measure deformations within ice, determine basal...

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Bibliographic Details
Published in:Water
Main Authors: Gang Liu, Pavel Talalay, Rusheng Wang, Yang Yang, Jialin Hong, Da Gong, An Liu, Dayou Fan
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2019
Subjects:
design principles
hot water drill
glaciers
heat transfer
pressure losses
refreezing rate
Hydraulic engineering
TC1-978
Water supply for domestic and industrial purposes
TD201-500
Ice Shelves
Online Access:https://doi.org/10.3390/w11020289
https://doaj.org/article/97ee9d94b11544418d915344ca1441a7
Description
Summary:Currently, hot-water drill systems are actively used to observe ocean cavities under ice shelves, detect the effects of climate change on glaciers, retrieve sub-ice seabed samples, study the internal ice structure with video imaging, log temperatures, measure deformations within ice, determine basal sliding velocity, provide clean access to subglacial lakes, and many other scientific applications. The main parameters of hot-water drilling systems in any configuration are flow rate, delivery pressure, and temperature of the delivered water. The controlled outcome variables are the diameter of the drilled borehole, rate of penetration, power and fuel consumption for ice melting, and refreezing rate of the borehole. The independent variables while drilling are the current/target depth and the temperature of the ice. The paper aims to present a design procedure for hot-water drilling parameters that are necessary to choose appropriate equipment and tools at the planning stage.

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