Inventor
DU MICHAEL H
US16 patents
⚠️ This page may combine multiple inventors who share the name “DU MICHAEL H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHLUMBERGER TECHNOLOGY CORP
11 patentsUS6688860B2Feb 10, 2004
Protector for electrical submersible pumps
SCHLUMBERGER TECHNOLOGY CORP75 citations97
US6981853B2Jan 3, 2006
Protector for electrical submersible pumps
SCHLUMBERGER TECHNOLOGY CORP44 citations95
US7806670B2Oct 5, 2010
Protector for electrical submersible pumps
SCHLUMBERGER TECHNOLOGY CORP13 citations92
US7741744B2Jun 22, 2010
System and method for protecting a submersible motor
SCHLUMBERGER TECHNOLOGY CORP19 citations92
US7217107B2May 15, 2007
Protector for electrical submersible pumps
SCHLUMBERGER TECHNOLOGY CORP27 citations92
US7654315B2Feb 2, 2010
Apparatus, pumping system incorporating same, and methods of protecting pump components
SCHLUMBERGER TECHNOLOGY CORP31 citations89
US7469748B2Dec 30, 2008
Submersible pumping system
SCHLUMBERGER TECHNOLOGY CORP27 citations88
US7640979B2Jan 5, 2010
System for well logging
SCHLUMBERGER TECHNOLOGY CORP10 citations82
US7549849B2Jun 23, 2009
Tandem motors
SCHLUMBERGER TECHNOLOGY CORP11 citations81
US9863215B2Jan 9, 2018
Shear valve system and methodology
SCHLUMBERGER TECHNOLOGY CORP2 citations63
US7231986B2Jun 19, 2007
Well tool protection system and method
SCHLUMBERGER TECHNOLOGY CORP3 citations62
DU MICHAEL H
5 patentsUS8061430B2Nov 22, 2011
Re-settable and anti-rotational contraction joint with control lines
DU MICHAEL H31 citations85
US8061429B2Nov 22, 2011
Systems and methods for downhole completions
DU MICHAEL H13 citations83
US7806190B2Oct 5, 2010
Contraction joint system
DU MICHAEL H13 citations83
US8496064B2Jul 30, 2013
System and method for engaging completions in a wellbore
DU MICHAEL H12 citations81
US9528357B2Dec 27, 2016
Protector for electrical submersible pumps
DU MICHAEL H3 citations71