Societe Nationale Elf Aquitaine (Production)

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 492
 
  
 
G01V GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS 278
 
  
 
B01D SEPARATION 1133
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF178
 
  
 
C09K MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR194
 
  
 
G01L MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 155
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 183
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 1197
 
  
 
G06T IMAGE DATA PROCESSING OR GENERATION, IN GENERAL 1134

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5465323 Method for modelling a surface and device for implementing sameMay 20, 91Nov 07, 95[G06T]
5366709 Liquid absorbent for acidic gases and process of deacidification of a gasJul 21, 92Nov 22, 94[C09K, C01B]
5347859 Dynamometric measuring device for a drill pipeMar 18, 91Sep 20, 94[E21B]
5289354 Method for acoustic transmission of drilling data from a wellJun 17, 93Feb 22, 94[G01V]
5277061 Method for determining the rotation speed of a drill bitApr 29, 92Jan 11, 94[E21B]
5272925 Motorized rotary swivel equipped with a dynamometric measuring unitAug 07, 92Dec 28, 93[G01L]
5268994 Method of plotting surfaces in a 3D volumeJan 30, 91Dec 07, 93[G06F]
5259958 Hydrocarbon extractorApr 30, 93Nov 09, 93[B01D]
5245871 Process for controlling a drilling operationJul 13, 92Sep 21, 93[G05D, E21B]
5217071 Production tube with integrated hydraulic lineApr 06, 92Jun 08, 93[E21B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5494650 Process for improving the sulphur yield of a complex for producing sulphur from a sour gas containing H.sub.2 S, the said complex comprising a sulphur plant and then an oxidation and hydrolysis unit followed by a purification unitExpiredJul 14, 93Feb 27, 96[C01B]
5298156 Simultaneous decarbonation and gasoline stripping of hydrocarbonsExpiredJul 14, 90Mar 29, 94[C10G]
5233304 Electromagnetic source integrated into an element of a well casingExpiredOct 31, 90Aug 03, 93[E21B, G01V]
5213162 Submarine wellheadExpiredFeb 14, 92May 25, 93[E21B]
5181565 Well probe able to be uncoupled from a rigid coupling connecting it to the surfaceExpiredDec 20, 90Jan 26, 93[E21B]
5179518 Method of processing seismic reflection data in order to obtain improved seismic sectionsExpiredAug 03, 90Jan 12, 93[G06F]
5173022 Process for pumping a gas/liquid mixture in an oil extraction well and device for implementing the processExpiredOct 01, 90Dec 22, 92[F01D]
5166362 Process for the manufacture of thiopheneExpiredAug 22, 91Nov 24, 92[C07D]
5158140 Apparatus and method for cleaning out an underground wellExpiredSep 26, 91Oct 27, 92[E21B]
5146985 Hydrophilic polymer gel water sealing processExpiredJan 16, 91Sep 15, 92[E21B]
5141061 Method and equipment for drilling control by vibration analysisExpiredNov 30, 90Aug 25, 92[E21B]
5133949 Process and device for the removal of H.sub.2 SExpiredJan 19, 90Jul 28, 92[C01B]
5121793 Capping equipment for blowout wellExpiredJan 31, 91Jun 16, 92[E21B]
5095138 Continuous synthesis of mercaptocarboxylic acid estersExpiredOct 05, 90Mar 10, 92[C07C]
5087759 Synthesis of vicinal alkanedithiolsExpiredFeb 07, 90Feb 11, 92[C07C]
5068445 Process for the preparation of organic disulphides and polysulphidesExpiredApr 03, 89Nov 26, 91[C07C]
5065421 Device for measuring fluid flows through a porous bodyExpiredNov 29, 89Nov 12, 91[G01N]
5032026 Interferometric sensor and use thereof in an interferometric deviceExpiredJun 01, 89Jul 16, 91[G01B]
5030438 Catalytic removal of hydrogen sulfides from liquid sulfurExpiredMar 14, 89Jul 09, 91[C01B, B01J]
5016710 Method of assisted production of an effluent to be produced contained in a geological formationExpiredJun 26, 87May 21, 91[E21B]

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