| 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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| 10/29/2008 | CN201141301Y Crude oil auto-sampling device |
| 10/29/2008 | CN201141300Y Electronic trick lock for single-chip control |
| 10/29/2008 | CN201141298Y Heat preserving structure for logger |
| 10/29/2008 | CN201141285Y Socket jointing device for fluted twist drill rod |
| 10/29/2008 | CN101297097A Method for mechanical and capillary seal analysis of a hydrocarbon trap |
| 10/29/2008 | CN101295012A Detecting tool motion effects on nuclear magnetic resonance measurements |
| 10/29/2008 | CN101294493A Center type permanent magnet of nuclear magnetic resonance logging instrument probe |
| 10/29/2008 | CN101294491A Self-adaption transmission method and system for down-hole information |
| 10/28/2008 | CA2354128C Apparatus and method for well fluid sampling |
| 10/23/2008 | WO2008127948A1 Modeling the transient behavior of bha/drill string while drilling |
| 10/23/2008 | WO2008127681A1 Inverse-vector method for smoothing dips and azimuths |
| 10/23/2008 | WO2008125749A1 Solid body probe |
| 10/23/2008 | WO2008042772A3 Formation testing and sampling tool including a coring device |
| 10/23/2008 | US20080257730 System and method for sensing using diamond based microelectrodes |
| 10/23/2008 | US20080257545 Determination of well shut-in time for curing resin-coated proppant particles |
| 10/23/2008 | US20080257031 Apparatus and Method for Actuating a Pressure Delivery System of a Fluid Sampler |
| 10/23/2008 | US20080257030 Petrophysical Fluid Flow Property Determination |
| 10/23/2008 | CA2683618A1 Inverse-vector method for smoothing dips and azimuths |
| 10/23/2008 | CA2678448A1 Solid body probe |
| 10/22/2008 | EP1982047A1 Method and system for monitoring soil properties |
| 10/22/2008 | EP1982046A1 Methods, systems, and computer-readable media for real-time oil and gas field production optimization using a proxy simulator |
| 10/22/2008 | CN201137494Y Retention rate instrument microwave probe |
| 10/22/2008 | CN201137493Y Capacitance method retention rate instrument rotary type probe |
| 10/22/2008 | CN201137492Y Emptying-free sampling valve |
| 10/22/2008 | CN201137491Y Pulse neutron double-spectrum fluid saturation logging tool |
| 10/21/2008 | US7439495 Nuclear imaging probe |
| 10/16/2008 | WO2007130749A3 Drill bit assembly with a logging device |
| 10/15/2008 | CN201133246Y Anti-theft antifreezing sampling valve |
| 10/15/2008 | CN201133245Y Digital focusing induction logging instrument coil array |
| 10/15/2008 | CN101287890A Spectral imaging for downhole fluid characterization |
| 10/15/2008 | CN101287889A Apparatus, method and system for improved reservoir simulation using an algebraic cascading class linear solver |
| 10/15/2008 | CN101285787A Three-dimensional oil reservoir moisture percentage measurement intelligent sensing array system |
| 10/15/2008 | CN101285382A Lithology density-microballoons focused device composite probe |
| 10/15/2008 | CN101285381A Process for inversing soft ground horizontal wave velocity by leaky mode waves |
| 10/14/2008 | US7434457 Fluid property sensors |
| 10/14/2008 | CA2296108C Actuation system for a downhole tool |
| 10/09/2008 | WO2008076909A3 Acoustic fluid analysis method |
| 10/09/2008 | US20080249906 Reservoir Evaluation Methods |
| 10/09/2008 | US20080245570 Modular connector and method |
| 10/08/2008 | EP1977081A2 Method and apparatus for in-situ side-wall core sample analysis |
| 10/08/2008 | CN201130111Y Drill stem type hydrated compound probe boring coring apparatus |
| 10/08/2008 | CN201129174Y Anti-freeze and anti-theft petroleum crude sample valve |
| 10/08/2008 | CN201129157Y Oil well head pressure testing anti-theft sampler |
| 10/08/2008 | CN101280682A Complete hydraulic self-drilling type side pressure equipment |
| 10/07/2008 | US7432109 Fluids analyzer; accurate determination in bore holes |
| 10/07/2008 | US7431107 Coring bit with uncoupled sleeve |
| 10/07/2008 | US7430931 Microgranulometry and methods of applications |
| 10/07/2008 | CA2502499C Actuation system for a downhole tool |
| 10/07/2008 | CA2502154C A combined propagation and lateral resistivity downhole tool |
| 10/07/2008 | CA2444545C Sampling isolator |
| 10/07/2008 | CA2380496C Method for determining a fluid contact level in a formation |
| 10/02/2008 | WO2007124041A3 A system and method for estimating supercharge pressure and initial pressure of a formation |
| 10/02/2008 | US20080236836 Apparatus, System, and Method for Determining Injected Fluid Vertical Placement |
| 10/02/2008 | US20080236818 Method and Apparatus for Controlling the Manufacture of Well Treatment Fluid |
| 10/02/2008 | US20080236270 Determining wellbore position within subsurface earth structures and updating models of such structures using azimuthal formation measurements |
| 10/01/2008 | CN201125731Y Rock debris quantitative sampling apparatus |
| 10/01/2008 | CN201125730Y Improved apparatus for horizontal well density logger anti-clip pull plate |
| 10/01/2008 | CN101275466A Lightweight low cost structure for formation conductivity measuring instrument |
| 10/01/2008 | CN100422764C Device and method for determining mud slowness in a borehole |
| 09/30/2008 | US7428924 System and method for completing a subterranean well |
| 09/30/2008 | US7428921 Well treatment system and method |
| 09/25/2008 | WO2008115178A1 Separator for downhole measuring and method therefor |
| 09/25/2008 | WO2008113127A1 A core orientation tool |
| 09/25/2008 | WO2008094050A3 Measurements of rock parameters |
| 09/24/2008 | CN101270666A Tunnel stope front geological condition section-expanding horizontal drilling estimation and prediction method |
| 09/24/2008 | CN101270660A Dynamic scale formation instrument |
| 09/24/2008 | CN101270659A System and method for detecting cased well outside ground layer acoustic impedance incontinuous interface |
| 09/23/2008 | US7427504 analyzing formation fluid in earth formation surrounding a borehole includes storing analytical reagent in a reagent container in a fluids analyzer in a formation tester and moving the formation tester, including the reagent, downhole |
| 09/23/2008 | US7426960 Biogenic fuel gas generation in geologic hydrocarbon deposits |
| 09/23/2008 | CA2502648C Actuation system for a downhole tool |
| 09/23/2008 | CA2409277C Wellbores utilizing fiber optic-based sensors and operating devices |
| 09/18/2008 | WO2008112795A1 Fracture testing apparatus and method |
| 09/18/2008 | WO2007120553A3 System and method for estimating filtrate contamination in formation fluid samples using refractive index |
| 09/18/2008 | US20080223125 Method and apparatus for collecting subterranean formation fluid |
| 09/18/2008 | CA2680670A1 Fracture testing apparatus and method |
| 09/17/2008 | EP1970702A1 Detection of an element in a flow |
| 09/17/2008 | EP1970493A2 Soil sampling apparatus |
| 09/17/2008 | CN201116469Y Pre-separating sampler |
| 09/17/2008 | CN201116468Y Erecting light-supplying device for drilling television imager |
| 09/17/2008 | CN101268359A Electro-chemical sensor |
| 09/12/2008 | WO2008109102A2 Portable core flood apparatus for conducting on-site permeability measurements |
| 09/12/2008 | WO2008107181A1 Detection of an element in a flow |
| 09/11/2008 | US20080216577 Testing of bottomhole samplers using acoustics |
| 09/10/2008 | EP1397661B1 Method and apparatus for downhole fluid characterization using flxural mechanical resonators |
| 09/10/2008 | CN101260804A Systems and methods for well data compression |
| 09/10/2008 | CN101260803A Method for monitoring oilfield high infiltration strip |
| 09/09/2008 | US7421881 Method and system for degassing a fluid |
| 09/06/2008 | CA2588496A1 Electromagnetic and magnetostatic shield to perform measurements ahead of the drill bit |
| 09/04/2008 | WO2008104177A1 Drilling tool with fluid cleaner |
| 09/04/2008 | US20080210420 Method for improving the determination of earth formation properties |
| 09/04/2008 | US20080209997 System, method, and apparatus for fracture design optimization |
| 09/04/2008 | CA2685061A1 Drilling tool with fluid cleaner |
| 09/03/2008 | EP1963838A1 Self-contained chromatography system |
| 09/03/2008 | CN201110175Y Theftproof sampling valve for oil well |
| 09/03/2008 | CN201110174Y Primary oil sample valve |
| 09/03/2008 | CN201110173Y Bowling type step-by-step water-searching technique tubular pile |
| 09/03/2008 | CN201110171Y Device for monitoring all-purpose real time parameter of wireless network type portable oil well and gas well |
| 09/03/2008 | CN201110157Y Casing tube sealer |
| 09/03/2008 | CN101255794A Logging method for determining characteristic of fluid in a downhole measurement region |
| 09/03/2008 | CN101255793A Impulse neutron complete spectrum saturability logging instrument variable parameter neutron pulse timing mode |