Intermittent high-drag oil well drilling bit
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United States of America Patent
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May 8, 1984
Issued Date -
N/A
app pub date -
Sep 20, 1982
filing date -
Mar 28, 1979
priority date (Note) -
Expired
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Abstract
Methods and apparatus are disclosed for the rapid and efficient drilling of oil well and other types of bore holes through tough abrasive underground formations, which methods and apparatus utilize high drag intermittent contact and cooling techniques to provide good rates of penetration with low wear and heat deterioration on the drilling tools.
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