Assignee
NUMAR CORP
US·24 granted patents·2,402 citations·filing 1986–2002
Top patents by PatentIndex Score
24 records- 0197US6362619B2Method and apparatus for nuclear magnetic resonance measuring while drillingNUMAR CORP·Filed 2001·Granted Mar 26, 2002·94 cites·49 claims
- 0297US6268726B1Method and apparatus for nuclear magnetic resonance measuring while drillingNUMAR CORP·Filed 1999·Granted Jul 31, 2001·190 cites·37 claims
- 0396US5517115AEfficient processing of NMR echo trainsNUMAR CORP·Filed 1993·Granted May 14, 1996·131 cites·29 claims
- 0493US6583621B2Method and apparatus for nuclear magnetic resonance measuring while drillingNUMAR CORP·Filed 2002·Granted Jun 24, 2003·68 cites·23 claims
- 0593US5557200ANuclear magnetic resonance determination of petrophysical properties of geologic structuresNUMAR CORP·Filed 1994·Granted Sep 17, 1996·104 cites·3 claims
- 0693US5280243ASystem for logging a well during the drilling thereofNUMAR CORP·Filed 1993·Granted Jan 18, 1994·204 cites·53 claims
- 0793US5212447AApparatus and technique for nmr diffusion measurementNUMAR CORP·Filed 1990·Granted May 18, 1993·127 cites·29 claims
- 0893US4717877ANuclear magnetic resonance sensing apparatus and techniquesNUMAR CORP·Filed 1986·Granted Jan 5, 1988·142 cites·25 claims
- 0992US4717878ANuclear magnetic resonance sensing apparatus and techniquesNUMAR CORP·Filed 1986·Granted Jan 5, 1988·115 cites·15 claims
- 1091US5936405ASystem and method for lithology-independent gas detection using multifrequency gradient NMR loggingNUMAR CORP·Filed 1996·Granted Aug 10, 1999·121 cites·29 claims
- 1190US6107796AMethod and apparatus for differentiating oil based mud filtrate from connate oilNUMAR CORP·Filed 1998·Granted Aug 22, 2000·77 cites·34 claims
- 1289US6111408ANuclear magnetic resonance sensing apparatus and techniques for downhole measurementsNUMAR CORP·Filed 1997·Granted Aug 29, 2000·150 cites·40 claims
- 1389US5309098ANuclear magnetic resonance detection of geologic structuresNUMAR CORP·Filed 1991·Granted May 3, 1994·91 cites·9 claims
- 1489US4710713ANuclear magnetic resonance sensing apparatus and techniquesNUMAR CORP·Filed 1986·Granted Dec 1, 1987·182 cites·26 claims
- 1588US5696448ANMR system and method for formation evaluation using diffusion and relaxation log measurementsNUMAR CORP·Filed 1995·Granted Dec 9, 1997·113 cites·19 claims
- 1688US5412320ANuclear magnetic resonance determination of petrophysical properties of geologic structuresNUMAR CORP·Filed 1992·Granted May 2, 1995·72 cites·20 claims
- 1786US6051973AMethod for formation evaluation while drillingNUMAR CORP·Filed 1997·Granted Apr 18, 2000·78 cites·26 claims
- 1886US6005389APulse sequences and interpretation techniques for NMR measurementsNUMAR CORP·Filed 1997·Granted Dec 21, 1999·92 cites·46 claims
- 1982US6242912B1System and method for lithology-independent gas detection using multifrequency gradient NMR loggingNUMAR CORP·Filed 1997·Granted Jun 5, 2001·59 cites·35 claims
- 2079US6204663B1Pulse sequence and method for suppression of magneto-acoustic artifacts in NMR dataNUMAR CORP·Filed 1997·Granted Mar 20, 2001·44 cites·20 claims
- 2178US6242913B1Method for formation evaluation while drillingNUMAR CORP·Filed 2000·Granted Jun 5, 2001·33 cites·15 claims
- 2274US6377042B1Method and apparatus for merging of NMR echo trains in the time domainNUMAR CORP·Filed 1999·Granted Apr 23, 2002·38 cites·44 claims
- 2374US6023164AEccentric NMR well logging apparatus and methodNUMAR CORP·Filed 1998·Granted Feb 8, 2000·53 cites·17 claims
- 2452US6316940B1System and method for identification of hydrocarbons using enhanced diffusionNUMAR CORP·Filed 1999·Granted Nov 13, 2001·24 cites·27 claims
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