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Zitiert von PatentEingetragenAusgestelltUrsprünglich Bevollmächtigter Titel
US393446822. Jan. 197527. Jan. 1976Schlumberger Technology CorporationFormation-testing apparatus
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US476695510. Apr. 198730. Aug. 1988Atlantic Richfield CompanyWellbore fluid sampling apparatus
US478744719. Juni 198729. Nov. 1988Halliburton CompanyWell fluid modular sampling apparatus
US486058123. Sept. 198829. Aug. 1989Schlumberger Technology CorporationDown hole tool for determination of formation properties
US487853815. Febr. 19897. Nov. 1989Halliburton CompanyPerforate, test and sample tool and method of use
US48799005. Juli 198814. Nov. 1989Halliburton Logging Services, Inc.Hydraulic system in formation test tools having a hydraulic pad pressure priority system and high speed extension of the setting pistons
US488312323. Nov. 198828. Nov. 1989Halliburton CompanyAbove packer perforate, test and sample tool and method of use
US489672211. Jan. 198930. Jan. 1990Schlumberger Technology CorporationMultiple well tool control systems in a multi-valve well testing system having automatic control modes
US491516810. Jan. 198910. Apr. 1990Schlumberger Technology CorporationMultiple well tool control systems in a multi-valve well testing system
US491517123. Nov. 198810. Apr. 1990Halliburton CompanyAbove packer perforate test and sample tool and method of use
US505659513. Aug. 199015. Okt. 1991Gas Research InstituteWireline formation test tool with jet perforator for positively establishing fluidic communication with subsurface formation to be tested
US56222231. Sept. 199522. Apr. 1997Haliburton CompanyApparatus and method for retrieving formation fluid samples utilizing differential pressure measurements
US57419625. Apr. 199621. Apr. 1998Halliburton Energy Services, Inc.Apparatus and method for analyzing a retrieving formation fluid utilizing acoustic measurements
US59343741. Aug. 199610. Aug. 1999Halliburton Energy Services, Inc.Formation tester with improved sample collection system
US655053821. Nov. 200022. Apr. 2003Schlumberger Technology CorporationCommunication with a downhole tool
US659167328. Nov. 200115. Juli 2003Schlumberger Technology CorporationMethods for identifying fluid types of underground formations
US71559679. Juli 20022. Jan. 2007Schlumberger Technology CorporationFormation testing apparatus and method
US724073711. Apr. 200610. Juli 2007WellDynamics, Inc.Direct proportional surface control system for downhole choke
US742892521. Nov. 200530. Sept. 2008Schlumberger Technology CorporationWellbore formation evaluation system and method
US756852125. Okt. 20074. Aug. 2009Schlumberger Technology CorporationWellbore formation evaluation system and method
US823510618. Jan. 20107. Aug. 2012Halliburton Energy Services, Inc.Formation testing and sampling apparatus and methods
USRE395836. Okt. 199724. Apr. 2007Schlumberger Technology CorporationMultiple well tool control systems in a multi-valve well testing system having automatic control modes