Halliburton Services

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 195
 
  
 
F23D BURNERS 131

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5295817 Apparatus and method for combusting crude oilAug 19, 92Mar 22, 94[F23D]
5165479 Method for stimulating subterranean formationsJul 22, 91Nov 24, 92[E21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5400855 Casing inflation packerExpiredJan 27, 93Mar 28, 95[E21B]
5284320 Surface valve with pressure energized seal and gear actuationExpiredAug 12, 92Feb 08, 94[F16K]
5221873 Pressure transducer with quartz crystal of singly rotated cut for increased pressure and temperature operating rangeExpiredJan 21, 92Jun 22, 93[H01L]
5127473 Repair of microannuli and cement sheathExpiredJan 08, 91Jul 07, 92[E21B]
5125455 Primary cementingExpiredJan 08, 91Jun 30, 92[E21B]
5123487 Repairing leaks in casingsExpiredJan 08, 91Jun 23, 92[E21B]
4889183 Method and apparatus for retaining shaped chargesExpiredJul 14, 88Dec 26, 89[E21B]
4880468 Waste solidification composition and methodsExpiredSep 29, 88Nov 14, 89[C04B]
4842073 Fluid additive and method for treatment of subterranean formationsExpiredMar 14, 88Jun 27, 89[C09K, E21B]
4809783 Method of dissolving organic filter cakeExpiredJan 14, 88Mar 07, 89[E21B]
4804044 Perforating gun firing tool and method of operationExpiredApr 20, 87Feb 14, 89[E21B]
4771801 Protective cover assembly with reverse buckling discExpiredFeb 02, 87Sep 20, 88[F16K]
4700780 Method of reducing fluid loss in cement compositions which may contain substantial salt concentrationsExpiredMar 27, 87Oct 20, 87[E21B]
4502537 Annular sample chamber, full bore, APR.RTM. samplerExpiredSep 23, 83Mar 05, 85[E21B]
4393939 Clay stabilization during oil and gas well cementing operationsExpiredApr 20, 81Jul 19, 83[E21B]
4368136 Aqueous gel composition for temporary stabilization of subterranean well formationExpiredMar 17, 80Jan 11, 83[C09K, B01J, E21B]
4355685 Ball operated J-slotExpiredMay 22, 80Oct 26, 82[E21B]
4334582 Method of cementing from a floating vesselExpiredAug 04, 80Jun 15, 82[E21B]
4324293 Circulation valveExpiredApr 29, 80Apr 13, 82[F16K, E21B]
4319633 Drill pipe tester and safety valveExpiredApr 03, 80Mar 16, 82[E21B]

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