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Patentes

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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US397614930 Ene 197524 Ago 1976Linden-Alimak ABRock drill equipment having a mechanized drill bit exchange
US40531825 Oct 197611 Oct 1977Ray M. BaughmanMining method and apparatus
US406241229 Ene 197613 Dic 1977The United States of America as represented by the Secretary of the InteriorFlexible shaft drilling system
US46000618 Jun 198415 Jul 1986Methane Drainage VenturesIn-shaft drilling method for recovery of gas from subterranean formations
US46243286 Sep 198525 Nov 1986Methane Drainage VenturesIn-shaft drilling apparatus for recovery of gas from subterranean formations
US46917883 Jul 19858 Sep 1987Hitachi Construction Machinery Co., Ltd.
Tokyo Gas Co., Ltd.
Lateral hole boring method and apparatus
US555368031 Ene 199510 Sep 1996Horizontal drilling apparatus
US657186714 Jun 20013 Jun 2003Apparatus for increasing the effective diameter of a wellbore
US763170831 Oct 200615 Dic 2009Method and apparatus for horizontal drilling and oil recovery
USRE386164 Sep 200112 Oct 2004Halliburton Energy Services, Inc.Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes