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Patentes

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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US436779424 Dic 198011 Ene 1983Exxon Production Research Co.Acoustically actuated downhole blowout preventer
US446513930 Abr 198214 Ago 1984Baker Oil Tools, Inc.Valve and sensing device for well conduits
US47874461 May 198729 Nov 1988Atlantic Richfield CompanyInflatable packer and fluid flow control apparatus for wellbore operations
US50545577 Jun 19908 Oct 1991Institut Francais du PetroleDevice for extracting a liquid out of a tube of great length
US522850723 Ago 199120 Jul 1993Wireline hydraulic retrieving tool
US539875328 Abr 199321 Mar 1995Wireline hydraulic retrieving tool and downhole power generating assembly
US560519511 Ene 199625 Feb 1997Dowell, a division of Schlumber Technology CorporationInflation shape control system for inflatable packers
US56222231 Sep 199522 Abr 1997Haliburton CompanyApparatus and method for retrieving formation fluid samples utilizing differential pressure measurements
US57419625 Abr 199621 Abr 1998Halliburton Energy Services, Inc.Apparatus and method for analyzing a retrieving formation fluid utilizing acoustic measurements
US59343741 Ago 199610 Ago 1999Halliburton Energy Services, Inc.Formation tester with improved sample collection system
US602667528 Feb 199822 Feb 2000Weatherford/Lamb, Inc.Method and apparatus for testing threaded joints and threaded members
US717202815 Dic 20036 Feb 2007Weatherford/Lamb, Inc.Reciprocating slickline pump
US76005661 Dic 200513 Oct 2009Weatherford/Lamb, Inc.Collar locator for slick pump