Inventor · disambiguated record
Douglas J. Murray
Also filed as: MURRAY DOUGLAS · MURRAY DOUGLAS J · MURRAY DOUGLAS JAMES
59 granted patents·12 pending applications·3,867 citations·filing 1975–2021
99Inventor score
Top patents by PatentIndex Score
71 records- 0199US7387158B2Self energized packerBAKER HUGHES INC·Filed 2006·Granted Jun 17, 2008·168 cites·20 claims
- 0299US7325617B2Frac system without interventionBAKER HUGHES INC·Filed 2006·Granted Feb 5, 2008·222 cites·15 claims
- 0399US6334486B1Downhole flow control devicesBAKER HUGHES INC·Filed 2000·Granted Jan 1, 2002·113 cites·29 claims
- 0498US7552779B2Downhole method using multiple plugsBAKER HUGHES INC·Filed 2007·Granted Jun 30, 2009·144 cites·8 claims
- 0598US5906238ADownhole flow control devicesBAKER HUGHES INC·Filed 1997·Granted May 25, 1999·134 cites·10 claims
- 0698US5318122AMethod and apparatus for sealing the juncture between a vertical well and one or more horizontal wells using deformable sealing meansBAKER HUGHES INC·Filed 1992·Granted Jun 7, 1994·351 cites·20 claims
- 0797US8291982B2Multi-position valve for fracturing and sand control and associated completion methodsMURRAY DOUGLAS J·Filed 2011·Granted Oct 23, 2012·31 cites·6 claims
- 0897US6484800B2Downhole flow control devicesBAKER HUGHES INC·Filed 2001·Granted Nov 26, 2002·68 cites·17 claims
- 0997US5425424ACasing valveBAKER HUGHES INC·Filed 1994·Granted Jun 20, 1995·259 cites·42 claims
- 1096US7552777B2Self-energized downhole toolBAKER HUGHES INC·Filed 2005·Granted Jun 30, 2009·100 cites·20 claims
- 1196US7392841B2Self boosting packing elementBAKER HUGHES INC·Filed 2005·Granted Jul 1, 2008·82 cites·9 claims
- 1296US4967841AHorizontal well circulation toolBAKER HUGHES INC·Filed 1989·Granted Nov 6, 1990·84 cites·7 claims
- 1395US7395856B2Disappearing plugBAKER HUGHES INC·Filed 2006·Granted Jul 8, 2008·49 cites·2 claims
- 1494US7604062B2Electric pressure actuating tool and methodBAKER HUGHES INC·Filed 2007·Granted Oct 20, 2009·46 cites·23 claims
- 1593US8171994B2Multi-position valve for fracturing and sand control and associated completion methodsMURRAY DOUGLAS J·Filed 2011·Granted May 8, 2012·16 cites·21 claims
- 1693US5832996AElectro hydraulic downhole control deviceBAKER HUGHES INC·Filed 1997·Granted Nov 10, 1998·82 cites·18 claims
- 1793US4258826ACombination stepladder and load lifting apparatusMURRAY DOUGLAS J·Filed 1979·Granted Mar 31, 1981·69 cites·7 claims
- 1893US4017989AWall frames with interlocking clipsDIMENSIONAL IND INC·Filed 1975·Granted Apr 19, 1977·77 cites·4 claims
- 1992US6561279B2Method and apparatus for completing a wellboreBAKER HUGHES INC·Filed 2002·Granted May 13, 2003·113 cites·18 claims
- 2092US6419026B1Method and apparatus for completing a wellboreBAKER HUGHES INC·Filed 2000·Granted Jul 16, 2002·116 cites·16 claims
- 2191US6535585B1System and method for notification upon successful message deliveryWORLDCOM INC·Filed 2000·Granted Mar 18, 2003·83 cites·36 claims
- 2291US5944108AMethod for multi-lateral completion and cementing the juncture with lateral wellboresBAKER HUGHES INC·Filed 1997·Granted Aug 31, 1999·143 cites·8 claims
- 2391US5318121AMethod and apparatus for locating and re-entering one or more horizontal wells using whipstock with sealable boresBAKER HUGHES INC·Filed 1992·Granted Jun 7, 1994·151 cites·32 claims
- 2490US7703532B2Tubing retrievable injection valveBAKER HUGHES INC·Filed 2007·Granted Apr 27, 2010·37 cites·25 claims
- 2590US6012526AMethod for sealing the junctions in multilateral wellsBAKER HUGHES INC·Filed 1997·Granted Jan 11, 2000·165 cites·13 claims
- 2690US5316084AWell tool with sealing meansBAKER HUGHES INC·Filed 1991·Granted May 31, 1994·109 cites·48 claims
- 2789US6041857AMotor drive actuator for downhole flow control devicesBAKER HUGHES INC·Filed 1997·Granted Mar 28, 2000·140 cites·35 claims
- 2888US6450255B2Downhole flow control devicesBAKER HUGHES INC·Filed 2001·Granted Sep 17, 2002·21 cites·8 claims
- 2988US5156220AWell tool with sealing meansBAKER HUGHES INC·Filed 1990·Granted Oct 20, 1992·100 cites·8 claims
- 3087US7971646B2Multi-position valve for fracturing and sand control and associated completion methodsBAKER HUGHES INC·Filed 2007·Granted Jul 5, 2011·22 cites·15 claims
- 3185US8607860B2Flexible collet anchor assembly with compressive load transfer featureAVANT MARCUS A·Filed 2010·Granted Dec 17, 2013·10 cites·23 claims
- 3285US6640895B2Expandable tubing joint and through-tubing multilateral completion methodBAKER HUGHES INC·Filed 2001·Granted Nov 4, 2003·71 cites·17 claims
- 3383US7806193B2Swellable packer with back-up systemsBAKER HUGHES INC·Filed 2008·Granted Oct 5, 2010·25 cites·15 claims
- 3483US7591312B2Completion method for fracturing and gravel packingBAKER HUGHES INC·Filed 2007·Granted Sep 22, 2009·22 cites·17 claims
- 3582US8327933B2Arrangement and method for sending and/or sealing cement at a liner hangerLYNDE GERALD D·Filed 2011·Granted Dec 11, 2012·6 cites·15 claims
- 3682US6612547B2Downhole flow control devicesBAKER HUGHES INC·Filed 2001·Granted Sep 2, 2003·39 cites·8 claims
- 3780US8662187B2Permanent magnet linear motor actuated safety valve and methodLAKE GARY·Filed 2009·Granted Mar 4, 2014·11 cites·3 claims
- 3879US7661471B2Self energized backup system for packer sealing elementsBAKER HUGHES INC·Filed 2005·Granted Feb 16, 2010·18 cites·20 claims
- 3979US7367405B2Electric pressure actuating tool and methodBAKER HUGHES INC·Filed 2005·Granted May 6, 2008·15 cites·6 claims
- 4077US7497264B2Multilateral production apparatus and methodBAKER HUGHES INC·Filed 2006·Granted Mar 3, 2009·17 cites·20 claims
- 4177US4917191AMethod and apparatus for selectively shifting a tool memberBAKER HUGHES INC·Filed 1989·Granted Apr 17, 1990·53 cites·17 claims
- 4275US7478678B2Time release downhole triggerBAKER HUGHES INC·Filed 2005·Granted Jan 20, 2009·17 cites·8 claims
- 4371US5549161AOverpull shifting toolBAKER HUGHES INC·Filed 1995·Granted Aug 27, 1996·60 cites·45 claims
- 4467US7766089B2Packer system and methodBAKER HUGHES INC·Filed 2007·Granted Aug 3, 2010·9 cites·20 claims
- 4565US6691777B2Self-lubricating swageBAKER HUGHES INC·Filed 2001·Granted Feb 17, 2004·29 cites·31 claims
- 4664US7503388B2Circumferentially loaded slip-type overshot retrieval toolBAKER HUGHES INC·Filed 2006·Granted Mar 17, 2009·8 cites·20 claims
- 4763US6868909B2Drillable junction joint and method of useBAKER HUGHES INC·Filed 2002·Granted Mar 22, 2005·24 cites·27 claims
- 4863US6260616B1Downhole flow control devicesBAKER HUGHES INC·Filed 1998·Granted Jul 17, 2001·27 cites·17 claims
- 4962US6679329B2Sand barrier for a level 3 multilateral wellbore junctionBAKER HUGHES INC·Filed 2002·Granted Jan 20, 2004·22 cites·18 claims
- 5058US4949791AMethod and apparatus for securing and releasing continuous tubing in a subterranean wellBAKER HUGHES INC·Filed 1989·Granted Aug 21, 1990·27 cites·23 claims
Showing the top 50 of 71 patent records by PatentIndex Score.
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