Surface geometry for non-planar drill inserts

A cutting element insert is provided for use with drills used in the drilling and boring through of subterranean formations. This new insert has a modified diamond surface shape having ridges, facets and/or other discontinuities on the cutting surface topography, formed on or about an otherwise non-...

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Bibliographic Details
Main Authors JENSEN KENNETH M, MEDFORD TROY J, CANNON RANDY S
Format Patent
LanguageEnglish
Published 06.03.2001
Edition7
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:A cutting element insert is provided for use with drills used in the drilling and boring through of subterranean formations. This new insert has a modified diamond surface shape having ridges, facets and/or other discontinuities on the cutting surface topography, formed on or about an otherwise non-planar shape, such as spherical, hemispherical, conical or the like. This modified diamond layer shape provides increased cutting stress at the diamond/rock interface, thereby causing the rock to fail with less over all drilling energy being required, while simultaneously introducing little additional stresses to the cutter or insert.
Bibliography:Application Number: US19970980389