|Title||Drilling Fluid Observations and Recommendations for U.S. Polar Program, WAISCORES Drilling Project|
|Author(s)||Michael D Gerasimoff|
Internal Report, Ice Coring and Drilling Services, University of Wisconsin-Madison
Boring ice to depths in excess of about 300 meters requires a fluid with a density closely matched to that of ice to prevent lithostatic pressure from causing plastic collapse of the borehole; the latter frequently results in loss of the drilling equipment. The fluid, or mixture of fluids, must simultaneously satisfy criteria for density, low viscosity, frost resistance, as well as workplace safety and environmental compliance over both the short term (e.g., fire hazard and acute toxicity) and long term (chronic toxicity, local and global environmental degradation). The fluid must also satisfy other criteria, for example those stemming from the analytical methods employed on the ice core.
|Special Collections||IDP Documents, Science Requirements (IDP Equipment), WAIS Divide Ice Core Project|
|Citation||Michael D Gerasimoff ( 2003 ) Drilling Fluid Observations and Recommendations for U.S. Polar Program, WAISCORES Drilling Project. Internal Report, Ice Coring and Drilling Services, University of Wisconsin-Madison , 1-32 .|