Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Churn-drill performance

Technical Report ·
OSTI ID:7295021
Results are given of a series of tests conducted at various quarries to evaluate various factors affecting churndrill performance. Factors examined included drillability of rock, weight of drill tools, length of stroke, number of strokes per minute, diameter of bit, amount of drilling water added periodically, and specific gravity of drilling sludge. Numerous charts and interpretative data on tests conducted are included.
Research Organization:
Bureau of Mines, Washington, D.C. (USA)
OSTI ID:
7295021
Report Number(s):
BM-RI-4058
Country of Publication:
United States
Language:
English