Wear Element for Downhole Tool with a Cold-Pressed Graphite Wear Layer

A wear element for a downhole, earth cutting tool for forming bore holes comprises a wear layer made of "cold pressed graphite" attached to a substrate comprised of, for example, a cemented metal carbide. Cold pressed graphite is, depending on the arrangement of carbon bonds, also referred...

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Bibliographic Details
Main Authors BOWDEN NEAL ALAN, DUBOSE WILLIAM HENRY, DAMIAN THOMAS ALAN
Format Patent
LanguageEnglish
Published 24.07.2014
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
GRINDING
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PERFORMING OPERATIONS
POLISHING
TOOLS FOR GRINDING, BUFFING, OR SHARPENING
TRANSPORTING
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Summary:A wear element for a downhole, earth cutting tool for forming bore holes comprises a wear layer made of "cold pressed graphite" attached to a substrate comprised of, for example, a cemented metal carbide. Cold pressed graphite is, depending on the arrangement of carbon bonds, also referred to as M-carbon or W-carbon, cbt-c4, Z-Carbon and others. The wear element is formed by pressing with a previously formed cemented carbide substrate particles of one or more carbon allotropes, including, for example, SP2 bonded carbon allotropes, such as Fullerenes, carbon nanotubes, graphite, at pressures in excess of 1,000,000 pounds per square inch, or 6.89 Gigapascals, at a temperature substantially below 600 degrees Celsius.
Bibliography:Application Number: US201414160395