Inventor
VIRALLY STEPHANE J
US9 patents
Patents
9 patentsUS7493959B2Feb 24, 2009
Joining tubular members
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US6808020B2Oct 26, 2004
Debris-free valve apparatus and method of use
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US6732803B2May 11, 2004
Debris free valve apparatus
SCHLUMBERGER TECHNOLOGY CORP46 citations91
US7380616B2Jun 3, 2008
Automatic downlink system
SCHLUMBERGER TECHNOLOGY CORP15 citations90
US7198102B2Apr 3, 2007
Automatic downlink system
SCHLUMBERGER TECHNOLOGY CORP16 citations90
US7128152B2Oct 31, 2006
Method and apparatus to selectively reduce wellbore pressure during pumping operations
SCHLUMBERGER TECHNOLOGY CORP25 citations89
US7866708B2Jan 11, 2011
Joining tubular members
SCHLUMBERGER TECHNOLOGY CORP13 citations82
US7128160B2Oct 31, 2006
Method and apparatus to selectively reduce wellbore pressure during pumping operations
SCHLUMBERGER TECHNOLOGY CORP19 citations81
US7320370B2Jan 22, 2008
Automatic downlink system
SCHLUMBERGER TECHNOLOGY CORP7 citations72