Drill bit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9869131
APP PUB NO 20150345228A1
SERIAL NO

14761244

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A drill bit comprises at least one blade, comprising a plurality of cutting elements in the form of polycrystalline diamond cutters disposed on a leading edge of the blade, at least one diamond impregnated cutting region, disposed behind the leading edge of the blade, and wherein at least one of the cutters disposed on the leading, edge is an off-tip cutting element, arranged so that it does not engage with the formation during drilling until bit wear has taken place.

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Patent Owner(s)

Patent OwnerAddress
NOV DOWNHOLE EURASIA LIMITEDGLOUCESTERSHIRE GL10 3RQ

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Graham, Ryan The Woodlands, US 12 53
John, Denise Cheltenham, GB 1 4
Williams, Stephen Stroud, GB 142 2361

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