Inventor · disambiguated record
Randolph J. Sheffield
Also filed as: SHEFFIELD RANDOLPH J
17 granted patents·2 pending applications·1,047 citations·filing 2000–2010
96Inventor score
Files withSCHLUMBERGER TECHNOLOGY CORP14PATEL DINESH R1SCHLUMBEGER TECHNOLOGY CORP1SHEFFIELD RANDOLPH J1
Top patents by PatentIndex Score
19 records- 0197US7477160B2Wireless communications associated with a wellboreSCHLUMBERGER TECHNOLOGY CORP·Filed 2005·Granted Jan 13, 2009·100 cites·19 claims
- 0296US8499843B2System and method to seal using a swellable materialPATEL DINESH R·Filed 2010·Granted Aug 6, 2013·34 cites·8 claims
- 0396US7665537B2System and method to seal using a swellable materialSCHLUMBEGER TECHNOLOGY CORP·Filed 2005·Granted Feb 23, 2010·159 cites·24 claims
- 0493US7591321B2Zonal isolation tools and methods of useSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted Sep 22, 2009·74 cites·13 claims
- 0593US7348893B2Borehole communication and measurement systemSCHLUMBERGER TECHNOLOGY CORP·Filed 2005·Granted Mar 25, 2008·58 cites·51 claims
- 0690US6439313B1Downhole machining of well completion equipmentSCHLUMBERGER TECHNOLOGY CORP·Filed 2000·Granted Aug 27, 2002·112 cites·20 claims
- 0789US6989764B2Apparatus and method for downhole well equipment and process management, identification, and actuationSCHLUMBERGER TECHNOLOGY CORP·Filed 2001·Granted Jan 24, 2006·93 cites·7 claims
- 0885US7347271B2Wireless communications associated with a wellboreSCHLUMBERGER TECHNOLOGY CORP·Filed 2005·Granted Mar 25, 2008·26 cites·12 claims
- 0985US6655461B2Straddle packer tool and method for well treating having valving and fluid bypass systemSCHLUMBERGER TECHNOLOGY CORP·Filed 2002·Granted Dec 2, 2003·75 cites·23 claims
- 1081US7273102B2Remotely actuating a casing conveyed toolSCHLUMBERGER TECHNOLOGY CORP·Filed 2004·Granted Sep 25, 2007·54 cites·20 claims
- 1181US6776239B2Tubing conveyed fracturing tool and methodSCHLUMBERGER TECHNOLOGY CORP·Filed 2002·Granted Aug 17, 2004·63 cites·38 claims
- 1278US6425443B1Pressure compensated disconnect system and methodSCHLUMBERGER TECHNOLOGY CORP·Filed 2000·Granted Jul 30, 2002·52 cites·25 claims
- 1376US7011157B2Method and apparatus for cleaning a fractured interval between two packersSCHLUMBERGER TECHNOLOGY CORP·Filed 2003·Granted Mar 14, 2006·46 cites·28 claims
- 1476US6533037B2Flow-operated valveSCHLUMBERGER TECHNOLOGY CORP·Filed 2000·Granted Mar 18, 2003·47 cites·26 claims
- 1565US8517113B2Remotely actuating a valveSHEFFIELD RANDOLPH J·Filed 2004·Granted Aug 27, 2013·31 cites·24 claims
- 1651US6668938B2Cup packerSCHLUMBERGER TECHNOLOGY CORP·Filed 2002·Granted Dec 30, 2003·13 cites·21 claims
- 1749US7353869B2System and method for utilizing a skin sensor in a downhole applicationSCHLUMBERGER TECHNOLOGY CORP·Filed 2004·Granted Apr 8, 2008·10 cites·26 claims
- 1845US2005189679A1Extended life electronic tagsFiled 2005·Application pending·0 cites
- 1940US2002133942A1Extended life electronic tagsFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →