Thermally stable polycrystalline diamond and methods of making the same

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United States of America

PATENT NO 11306542
APP PUB NO 20150068817A1
SERIAL NO

14481570

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Abstract

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A method of making a cutting element includes subjecting a mixture of diamond particles and a carbonate material to high-pressure high-temperature sintering conditions to form a sintered carbonate-polycrystalline diamond body having a diamond matrix of diamond grains bonded together and carbonates residing in the interstitial regions between the diamond grains, the carbonate material having a non-uniform distribution throughout the diamond matrix. The carbonate-polycrystalline diamond body is subjected to a controlled temperature, a controlled pressure condition or a combination thereof, to effect an at least partial decomposition of the carbonate material.

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Patent Owner(s)

Patent OwnerAddress
SCHLUMBERGER TECHNOLOGY CORPORATION300 SCHLUMBERGER DRIVE SUGAR LAND TX 77478

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bao, Yahua Orem, US 40 206
Belnap, J Daniel Lindon, US 74 1971
Lin, Zhijun The Woodlands, US 10 87
Zhao, Liang Spring, US 669 2735

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