Inventor
SHEFFIELD RANDOLPH J
US17 patents
⚠️ This page may combine multiple inventors who share the name “SHEFFIELD RANDOLPH J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHLUMBERGER TECHNOLOGY CORP
14 patentsUS7477160B2Jan 13, 2009
Wireless communications associated with a wellbore
SCHLUMBERGER TECHNOLOGY CORP100 citations98
US6989764B2Jan 24, 2006
Apparatus and method for downhole well equipment and process management, identification, and actuation
SCHLUMBERGER TECHNOLOGY CORP93 citations97
US6655461B2Dec 2, 2003
Straddle packer tool and method for well treating having valving and fluid bypass system
SCHLUMBERGER TECHNOLOGY CORP75 citations97
US7273102B2Sep 25, 2007
Remotely actuating a casing conveyed tool
SCHLUMBERGER TECHNOLOGY CORP54 citations96
US7591321B2Sep 22, 2009
Zonal isolation tools and methods of use
SCHLUMBERGER TECHNOLOGY CORP74 citations95
US7348893B2Mar 25, 2008
Borehole communication and measurement system
SCHLUMBERGER TECHNOLOGY CORP58 citations95
US6776239B2Aug 17, 2004
Tubing conveyed fracturing tool and method
SCHLUMBERGER TECHNOLOGY CORP63 citations95
US6439313B1Aug 27, 2002
Downhole machining of well completion equipment
SCHLUMBERGER TECHNOLOGY CORP112 citations95
US6425443B1Jul 30, 2002
Pressure compensated disconnect system and method
SCHLUMBERGER TECHNOLOGY CORP52 citations95
US7347271B2Mar 25, 2008
Wireless communications associated with a wellbore
SCHLUMBERGER TECHNOLOGY CORP26 citations92
US7011157B2Mar 14, 2006
Method and apparatus for cleaning a fractured interval between two packers
SCHLUMBERGER TECHNOLOGY CORP46 citations92
US6533037B2Mar 18, 2003
Flow-operated valve
SCHLUMBERGER TECHNOLOGY CORP47 citations91
US7353869B2Apr 8, 2008
System and method for utilizing a skin sensor in a downhole application
SCHLUMBERGER TECHNOLOGY CORP10 citations84
US6668938B2Dec 30, 2003
Cup packer
SCHLUMBERGER TECHNOLOGY CORP13 citations80