Búsqueda Imágenes Maps Play YouTube Noticias Gmail Drive Más »
Búsqueda avanzada de patentes | Historial web | Iniciar sesión

Patentes

Citada por

Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US41767173 Abr 19784 Dic 1979Cementing tool and method of utilizing same
US434335710 Oct 198010 Ago 1982Downhole surge tools
US43600634 Dic 198023 Nov 1982Otis Engineering CorporationValve
US442707029 Mar 198224 Ene 1984O'Brien-Goins Engineering, Inc.Circulating and pressure equalizing sub
US445230627 Sep 19825 Jun 1984Apparatus for detecting ruptures in drill pipe above and below the drill collar
US447954527 Oct 198230 Oct 1984Well-cementing stage collar
US459744920 Abr 19841 Jul 1986Method and apparatus for preventing fluid runovers from a well
US485043217 Oct 198825 Jul 1989Texaco Inc.Manual port closing tool for well cementing
US503886225 Abr 199013 Ago 1991Halliburton CompanyExternal sleeve cementing tool
US534808917 Ago 199320 Sep 1994Halliburton CompanyMethod and apparatus for the multiple stage cementing of a casing string in a well
US543733027 Jul 19941 Ago 1995Baker Hughes IncorporatedLiner cementing system and method
US564102115 Nov 199524 Jun 1997Halliburton Energy ServicesWell casing fill apparatus and method
US608245929 Jun 19984 Jul 2000Halliburton Energy Services, Inc.Drill string diverter apparatus and method
US618276628 May 19996 Feb 2001Halliburton Energy Services, Inc.Drill string diverter apparatus and method
US657187624 May 20013 Jun 2003Halliburton Energy Services, Inc.Fill up tool and mud saver for top drives
US681095820 Dic 20012 Nov 2004Halliburton Energy Services, Inc.Circulating cementing collar and method
US73224323 Dic 200429 Ene 2008Halliburton Energy Services, Inc.Fluid diverter tool and method
US76947323 Dic 200413 Abr 2010Halliburton Energy Services, Inc.Diverter tool