CORE LIFTER
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United States of America Patent
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Issued Date -
Oct 30, 2014
app pub date -
Jul 8, 2014
filing date -
Nov 3, 2009
priority date (Note) -
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Abstract
A core lifter and method for making same for use in a drilling system. The core lifter can include a tubular body having an exterior surface and an interior surface and can have a plurality of longitudinally-oriented recesses formed in the exterior surface of the tubular body of the core lifter and extending radially inwardly relative to the central axis of the core lifter. The plurality of longitudinally-oriented recesses formed in the exterior surface of the tubular body of the core lifter can extend along at least 50 percent of the length of the core lifter.
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