Assignee
ELF EXPLORATION PROD
US48 patents
Top patents by PatentIndex Score
US6328110B1Dec 11, 2001
Process for destroying a rigid thermal insulator positioned in a confined space
ELF EXPLORATION PROD70 citations96
US6266618B1Jul 24, 2001
Method for automatic detection of planar heterogeneities crossing the stratification of an environment
ELF EXPLORATION PROD105 citations95
US5880185AMar 9, 1999
Method for preparing reinforced multigrade bitumen/polymer and use of the resulting compositions for producing bitumen/polymer binders for surface coatings
ELF EXPLORATION PROD67 citations95
US6771800B2Aug 3, 2004
Method of chrono-stratigraphic interpretation of a seismic cross section or block
ELF EXPLORATION PROD74 citations94
US5873410AFeb 23, 1999
Method and installation for pumping an oil-well effluent
ELF EXPLORATION PROD81 citations92
US6711529B1Mar 23, 2004
Method for determining at least one optimal trajectory for reaching a fuzzy target situated in a medium starting from a point remote from the target
ELF EXPLORATION PROD22 citations91
US6444185B1Sep 3, 2002
Process for recovering as sulfur the compounds H2S, SO2, COS and/or CS2 in a tail gas from a sulfur plant
ELF EXPLORATION PROD54 citations91
US6293341B1Sep 25, 2001
Method of controlling a hydrocarbons production well activated by injection of gas
ELF EXPLORATION PROD46 citations91
US6250384B1Jun 26, 2001
Installation for pumping a liquid/gas two-phase effluent
ELF EXPLORATION PROD19 citations91
US6083471AJul 4, 2000
Method and catalyst for catalytically oxidizing a low concentration of H2 S in a gas to give sulphur
ELF EXPLORATION PROD32 citations91
US6372193B1Apr 16, 2002
Process for oxidizing the H2S contained at low concentration in a gas directly to sulphur by catalytic means and in the vapour pause
ELF EXPLORATION PROD27 citations90
US5960875AOct 5, 1999
Electric pump having a linear motor
ELF EXPLORATION PROD59 citations90
US6125203ASep 26, 2000
Method for automatically determining stratification beds in a site
ELF EXPLORATION PROD26 citations89
US6158508ADec 12, 2000
Method of operating a plant for the production of hydrocarbons
ELF EXPLORATION PROD29 citations88
US6119781ASep 19, 2000
Method of operating an oil and gas production well activated by a pumping system
ELF EXPLORATION PROD35 citations88
US6355150B1Mar 12, 2002
Analyzer for measuring H2S and its use for a sulfur oxidation reactor
ELF EXPLORATION PROD32 citations86
US6765325B1Jul 20, 2004
Alternating current electric motor
ELF EXPLORATION PROD26 citations85
US6756021B2Jun 29, 2004
Device for eliminating gas or paraffin hydrate deposits that form in well drilling equipment or in hydrocarbon production or transportation equipment
ELF EXPLORATION PROD28 citations85
US6540021B1Apr 1, 2003
Method for detecting inflow of fluid in a well while drilling and implementing device
ELF EXPLORATION PROD25 citations85
US6290754B1Sep 18, 2001
Regenerative process for the deacidification of a gas containing CO2 and liquid hydrocarbons using an absorbent liquid based on activated methyldiethanolamine
ELF EXPLORATION PROD23 citations85
US6271518B1Aug 7, 2001
Process for detecting and characterizing formation hydrocarbons
ELF EXPLORATION PROD38 citations83
US6056936AMay 2, 2000
Catalytic desulphurization process for a gas containing H2 S and SO2 compounds and catalyst for implementing said process
ELF EXPLORATION PROD17 citations83
US6446006B1Sep 3, 2002
Method of producing impact point position probability maps for a well
ELF EXPLORATION PROD14 citations82
US6283207B1Sep 4, 2001
Method for controlling a hydrocarbons production well of the gushing type
ELF EXPLORATION PROD20 citations82
US6235259B1May 22, 2001
Method and catalyst for direct sulphur oxidation of H2S contained in a gas
ELF EXPLORATION PROD38 citations82
US6016461AJan 18, 2000
Method for producing maps of the risk in positioning a well in an environment
ELF EXPLORATION PROD16 citations82
US6426321B1Jul 30, 2002
Biodegradable drilling mud and process for its preparation
ELF EXPLORATION PROD17 citations78
US6286602B1Sep 11, 2001
Method for controlling a device for transporting hydrocarbons between production means and a treatment plant
ELF EXPLORATION PROD19 citations76
US6531281B1Mar 11, 2003
Method of detecting sulphate-reducing bacteria
ELF EXPLORATION PROD13 citations73
US6113872ASep 5, 2000
Process for removing sulfur compounds out of a gas
ELF EXPLORATION PROD10 citations73
US6138763AOct 31, 2000
Method for pumping a fluid
ELF EXPLORATION PROD8 citations72
US6032104AFeb 29, 2000
Method of processing seismic signals so as to reduce the effects of dip in the analysis of moveouts
ELF EXPLORATION PROD7 citations71
US5991237ANov 23, 1999
Method for the determination of migration velocities in seismic processing
ELF EXPLORATION PROD12 citations71
US6126811AOct 3, 2000
Electrocatalytic method for the deoxygenation of sea water and device for its implementation
ELF EXPLORATION PROD9 citations68
US6028821AFeb 22, 2000
Process for separating waves in borehole seismics for walkway-type acquisitions
ELF EXPLORATION PROD9 citations68
US6272444B1Aug 7, 2001
Method for characterizing the coherence of an environment characteristic measurements
ELF EXPLORATION PROD7 citations67
US5962780AOct 5, 1999
Measuring device
ELF EXPLORATION PROD12 citations66
US6366859B1Apr 2, 2002
Method of detecting breaks in logging signals relating to a region of a medium
ELF EXPLORATION PROD9 citations65
US5999487ADec 7, 1999
Seismic reflection data acquisition and processing method and device for prospecting in tectonically complex environments
ELF EXPLORATION PROD7 citations65
US5831850ANov 3, 1998
Method and device for control over an admissable range with contextual anticipation using fuzzy logic
ELF EXPLORATION PROD15 citations62
US6636618B1Oct 21, 2003
Method for detecting geological discontinuity in an environment using an optical flow
ELF EXPLORATION PROD4 citations60
US6628806B1Sep 30, 2003
Method for detecting chaotic structures in a given medium
ELF EXPLORATION PROD6 citations60
US6094621AJul 25, 2000
Method for migration before summation
ELF EXPLORATION PROD12 citations59
US6044039AMar 28, 2000
Geophysical attribute migration method for a medium
ELF EXPLORATION PROD6 citations59
US6634442B1Oct 21, 2003
Process for using biodegradable drilling muds
ELF EXPLORATION PROD2 citations58
US6021728AFeb 8, 2000
Buoyancy unit with controlled heave
ELF EXPLORATION PROD6 citations57
US5887658AMar 30, 1999
OIL well production string hanger
ELF EXPLORATION PROD4 citations54
US6032103AFeb 29, 2000
Method for locating and identifying site anomalies
ELF EXPLORATION PROD3 citations53