| Patents for E21B 49 - Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells (11,875) |
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| 01/20/2005 | US20050015231 Near wellbore modeling method and apparatus |
| 01/20/2005 | US20050012036 Providing a light cell in a wellbore |
| 01/20/2005 | US20050011644 Formation pressure testing apparatus with flexible member and method of formation pressure testing |
| 01/20/2005 | US20050011290 Insertion tube methods and apparatus |
| 01/18/2005 | US6843332 Three dimensional steerable system and method for steering bit to drill borehole |
| 01/18/2005 | US6843120 Apparatus and method of monitoring and signaling for downhole tools |
| 01/18/2005 | US6843118 Formation tester pretest using pulsed flow rate control |
| 01/18/2005 | US6843117 Method and apparatus for determining downhole pressures during a drilling operation |
| 01/18/2005 | CA2239280C Formation data sensing with deployed remote sensors during well drilling |
| 01/13/2005 | US20050010382 Methods for evaluating and improving drilling operations |
| 01/13/2005 | US20050005624 Downhole sorption cooling and heating in wireline logging and monitoring while drilling |
| 01/12/2005 | CN2671238Y Multifunctional satellite network long-range monitoring system for petroleum drilling |
| 01/12/2005 | CN1563923A Long term porosity water pressure measuring method under action of dynamic loading |
| 01/12/2005 | CN1563670A Oil and water content and profile fiber sensor |
| 01/12/2005 | CN1563669A Pump drawing type formation tester through cased hole cable |
| 01/11/2005 | US6842725 Method for modelling fluid flows in a fractured multilayer porous medium and correlative interactions in a production well |
| 01/11/2005 | US6842700 Method and apparatus for effective well and reservoir evaluation without the need for well pressure history |
| 01/05/2005 | CN1560654A Downhole NMR tool having a programmable pulse sequencer |
| 01/05/2005 | CN1560653A Downhole NMR tool having a programmable pulse sequencer |
| 01/05/2005 | CN1560432A Method for micrometering well by detectors series setted in well |
| 01/05/2005 | CN1560429A Disision method of plugging water for integral regulating profile of water flood oil field |
| 01/04/2005 | US6837314 Sub apparatus with exchangeable modules and associated method |
| 12/30/2004 | US20040262007 Dual energized hydroseal |
| 12/30/2004 | US20040261992 Sample extraction system for boreholes |
| 12/29/2004 | WO2004113673A1 Method and apparatus for formation testing |
| 12/29/2004 | CN2667159Y Atitheft, antifreezing and antipollution oil sampling device |
| 12/29/2004 | CN1558088A Perforated single-layer formation testing |
| 12/28/2004 | US6836731 Method and system of determining well performance |
| 12/23/2004 | US20040256100 Method and apparatus of providing an optical fiber along a power supply line |
| 12/21/2004 | US6834233 System and method for stress and stability related measurements in boreholes |
| 12/21/2004 | US6832515 Method for measuring formation properties with a time-limited formation test |
| 12/16/2004 | US20040251022 Method and apparatus for testing and treatment of a completed well with production tubing in place |
| 12/16/2004 | US20040251021 Apparatus and methods for canceling the effects of fluid storage in downhole tools |
| 12/15/2004 | EP1485711A1 Method and apparatus for simulating pvt parameters |
| 12/15/2004 | CN1554855A Method for water searching and blocking for oil well |
| 12/14/2004 | US6832158 Real-time method for maintaining formation stability and monitoring fluid-formation interaction |
| 12/09/2004 | WO2004106942A2 Method for measuring fluid chemistry in drilling and production operations |
| 12/09/2004 | WO2004106699A1 Method and apparatus for in-situ measuring static rock moduli and strength |
| 12/09/2004 | US20040245991 Formation imaging while drilling in non-conductive fluids |
| 12/09/2004 | US20040244972 Method, apparatus and system for pore pressure prediction in presence of dipping formations |
| 12/09/2004 | US20040244971 Method and apparatus for obtaining a micro sample downhole |
| 12/09/2004 | US20040244965 Portable groundwater sampling system |
| 12/09/2004 | DE102004025497A1 Verfahren zum Verfeinern von Fluidprobendaten Method for refining fluid sample data |
| 12/07/2004 | US6828547 Wellbores utilizing fiber optic-based sensors and operating devices |
| 12/07/2004 | US6826972 Lysimeter methods and apparatus |
| 12/02/2004 | WO2004104560A2 Formation-based interpretation of nmr data for carbonate reservoirs |
| 12/02/2004 | WO2004104374A1 A method and apparatus for determining an optimal pumping rate based on a downhole dew point presseure determination |
| 12/02/2004 | WO2004033844A3 System and method for installation and use of devices in microboreholes |
| 12/02/2004 | US20040238220 Apparatus and method for cleaning and sealing a well borehole portion for formation evaluation |
| 12/02/2004 | US20040238166 Methods, apparatus, and systems for obtaining formation information utilizing sensors attached to a casing in a wellbore |
| 12/02/2004 | US20040238165 Methods, apparatus, and systems for obtaining formation information utilizing sensors attached to a casing in a wellbore |
| 12/02/2004 | US20040237640 Method and apparatus for measuring in-situ rock moduli and strength |
| 12/02/2004 | CA2469363A1 Methods, apparatus, and systems for obtaining formation information utilizing sensors attached to a casing in a wellbore |
| 12/01/2004 | EP1254352A4 Downhole densitometer |
| 12/01/2004 | CN2660517Y Layered net isostatic board and seepage simulating testing appts. |
| 12/01/2004 | CN2660123Y Wellhead extracting, sampling storage utensil |
| 11/30/2004 | US6826520 Method of upscaling permeability for unstructured grids |
| 11/30/2004 | US6826486 Methods and apparatus for predicting pore and fracture pressures of a subsurface formation |
| 11/30/2004 | US6823950 Method for formation pressure control while drilling |
| 11/25/2004 | US20040236513 Use of cutting velocities for real time pore pressure and fracture gradient prediction |
| 11/25/2004 | US20040236512 Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data |
| 11/25/2004 | US20040233446 [optical fluid analysis signal refinement] |
| 11/25/2004 | US20040231842 Method and apparatus for pumping quality control through formation rate analysis techniques |
| 11/25/2004 | US20040231841 Formation testing apparatus and method for smooth draw down |
| 11/25/2004 | US20040231840 Controlling Transient Pressure Conditions In A Wellbore |
| 11/25/2004 | US20040231408 Method and apparatus for determining an optimal pumping rate based on a downhole dew point pressure determination |
| 11/25/2004 | CA2524288A1 Method and apparatus using a tunable diode laser spectrometer for analysis of hydrocarbon samples |
| 11/24/2004 | EP1478824A2 Well system |
| 11/24/2004 | CN1549920A Methods and apparatus for downhole fluids analysis |
| 11/23/2004 | US6823298 Pyrolytic oil-productivity index method for predicting reservoir rock and oil characteristics |
| 11/22/2004 | CA2465254A1 Optical fluid analysis signal refinement |
| 11/18/2004 | WO2004099567A1 Continuous data recorder for a downhole sample tank |
| 11/18/2004 | WO2004099566A1 A method and apparatus for an advanced optical analyzer |
| 11/18/2004 | WO2004099565A1 Method and apparatus for testing and treatment of a completed well with production tubing in place |
| 11/18/2004 | WO2004099564A2 A method and apparatus for a downhole micro-sampler |
| 11/18/2004 | WO2004099552A2 Determining gradients using a multi-probed formation tester |
| 11/18/2004 | US20040230378 Determining gradients using a multi-probed formation tester |
| 11/18/2004 | CA2524075A1 A method and apparatus for an advanced optical analyzer |
| 11/17/2004 | CN2656622Y Anti-freezing sample valve for oil well head |
| 11/16/2004 | US6817229 Acoustic sensor for fluid characterization |
| 11/16/2004 | CA2181562C Milling tool |
| 11/11/2004 | WO2004097176A1 Formation testing apparatus and method for optimizing draw down |
| 11/11/2004 | WO2004097175A2 Device for analysing at least one gas contained in a liquid, particularly bore fluid |
| 11/11/2004 | US20040221983 Apparatus for sampling and logging on all producing zones of a well |
| 11/10/2004 | EP1475514A1 Testing drill packer |
| 11/10/2004 | CN2654856Y 3-D shaking device for crude oil |
| 11/04/2004 | WO2004081344A3 A method and apparatus for pumping quality control through formation rate analysis |
| 11/04/2004 | US20040220742 Real-time method for maintaining formation stability and monitoring fluid-formation interaction |
| 11/04/2004 | US20040219064 Fluids analyzer; accurate determination in bore holes |
| 11/04/2004 | US20040218176 Method and apparatus for an advanced optical analyzer |
| 11/04/2004 | US20040216874 Apparatus and Method for Controlling the Pressure of Fluid within a Sample Chamber |
| 11/04/2004 | US20040216873 Radially adjustable downhole devices & methods for same |
| 11/04/2004 | US20040216521 Method and apparatus for a continuous data recorder for a downhole sample tank |
| 11/03/2004 | EP1309888B1 Apparatus and method for synchronized formation measurement |
| 11/02/2004 | CA2091143C Formation evaluation tool |
| 10/28/2004 | WO2004092633A2 Spoolable composite coiled tubing connector |
| 10/27/2004 | CN1540138A Method for measuring pore pressure in sandstone reservoir of adjustment well in oil field |
| 10/26/2004 | US6810332 Method for computing complexity, confidence and technical maturity indices for reservoir evaluations |
| 10/26/2004 | CA2329673C Equi-pressure geosteering |
| 10/21/2004 | US20040206496 Testing drill packer |