Leak detection method for a rotating control head bearing assembly and its latch assembly using a comparator

United States of America Patent

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Feb 14, 2012
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Jul 14, 2011
app pub date
Mar 25, 2011
filing date
Oct 31, 2002

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Abstract

A leak detection method uses a comparator to compare fluid values in and from the latch assembly of the latch system for an oilfield device and/or in and from the bearing assembly of a rotating control head.

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Patent Owner	Address
WEATHERFORD TECHNOLOGY HOLDINGS LLC	2000 ST JAMES PLACE HOUSTON TX 77056

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E21B:EARTH OR ROCK DRILLING

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[Patents Count]

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Inventor Name	Address	# of filed Patents	Total Citations
Bailey, Thomas F	Houston, US	116	6284
Chambers, James W	Hackett, US	51	1844

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Leak detection method for a rotating control head bearing assembly and its latch assembly using a comparator

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United States of America Patent

13071800

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PATENT NO	8113291
APP PUB NO	20110168382A1
SERIAL NO	13071800
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
February 14, 2012	US,8113291,B2 US8113291B2	GRANTED PATENT AS SECOND PUBLICATION
July 14, 2011	US,20110168382,A1 US20110168382A1	FIRST PUBLISHED PATENT APPLICATION

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