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Brevets

Référencé par

Brevet citant Date de dépôt Date de délivrance Cessionnaire d'origine Titre
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US478589510 mars 198822 nov. 1988Exxon Production Research CompanyDrill bit with wear indicating feature
US491125222 févr. 198927 mars 1990Rock bit loose cone indicator
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US657188627 oct. 20003 juin 2003Baker Hughes IncorporatedMethod and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations
US663177221 août 200114 oct. 2003Halliburton Energy Services, Inc.Roller bit rearing wear detection system and method
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US664808226 oct. 200118 nov. 2003Halliburton Energy Services, Inc.Differential sensor measurement method and apparatus to detect a drill bit failure and signal surface operator
US668163326 oct. 200127 janv. 2004Halliburton Energy Services, Inc.Spectral power ratio method and system for detecting drill bit failure and signaling surface operator
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US672245026 oct. 200120 avr. 2004Halliburton Energy Svcs. Inc.Adaptive filter prediction method and system for detecting drill bit failure and signaling surface operator
US681742526 oct. 200116 nov. 2004Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator
US704424226 avr. 200216 mai 2006Halliburton Energy Services, Inc.Roller cone bits with reduced packing
US735719717 oct. 200115 avr. 2008Halliburton Energy Services, Inc.Method and apparatus for monitoring the condition of a downhole drill bit, and communicating the condition to the surface
US740445730 juin 200629 juil. 2008Baker Huges IncorporatedDownhole abrading tools having fusible material and methods of detecting tool wear
US742491030 juin 200616 sept. 2008Baker Hughes IncorporatedDownhole abrading tools having a hydrostatic chamber and uses therefor
US746477130 juin 200616 déc. 2008Baker Hughes IncorporatedDownhole abrading tool having taggants for indicating excessive wear
US748457130 juin 20063 févr. 2009Baker Hughes IncorporatedDownhole abrading tools having excessive wear indicator
US756592831 juil. 200628 juil. 2009Baker Hughes IncorporatedDownhole abrading tool having a taggant injection assembly for indicating excessive wear
US75750705 déc. 200818 août 2009Baker Hughes IncorporatedDownhole abrading tools having excessive wear indicator
USRE324636 nov. 197928 juil. 1987Norton Christensen, Inc.Method of and apparatus for telemetering information from a point in a well borehole to the earth's surface