| 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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| 08/14/2013 | CN102359370B Intelligent tester |
| 08/14/2013 | CN101832129B Downhole manual radioactive reservoir fluid analyzer |
| 08/14/2013 | CN101255794B Logging method for determining characteristic of fluid in downhole measurement region |
| 08/13/2013 | US8508741 Fluid sampling and analysis downhole using microconduit system |
| 08/13/2013 | US8505625 Controlling well operations based on monitored parameters of cement health |
| 08/13/2013 | US8505375 Geochemical surveillance of gas production from tight gas fields |
| 08/13/2013 | CA2727542C Multi-resolution borehole profiling |
| 08/08/2013 | WO2013116412A1 Determination of thermodynamic properties of a fluid based on density and sound speed |
| 08/08/2013 | WO2013115766A1 Systems and methods for modeling and triggering safety barriers |
| 08/08/2013 | US20130199286 Non-Invasive Compressibility and In Situ Density Testing of a Fluid Sample in a Sealed Chamber |
| 08/08/2013 | CA2861092A1 Sensor conditioning apparatus, systems, and methods |
| 08/07/2013 | EP2622386A2 Simulation of a geological phenomenon |
| 08/07/2013 | EP2622385A2 Karstification simulation |
| 08/07/2013 | EP2622384A2 Chemical scavenger for downhole chemical analysis |
| 08/07/2013 | CN203114285U Oil well anti-splash sampling device |
| 08/07/2013 | CN203114284U Rock sampling drill |
| 08/07/2013 | CN203114283U Steam huff-and-puff plane simulation experiment device |
| 08/07/2013 | CN203114266U Signal collecting and processing system for ground logger |
| 08/07/2013 | CN203114262U Measurement regulation communication integration type water distributor |
| 08/07/2013 | CN103237957A Method for measuring pressure in underground formation |
| 08/07/2013 | CN103235350A Method and device for testing stability and graduating radioactivity logging instrument |
| 08/07/2013 | CN103233730A Experimental measurement method for resistivity of mixed stratum water in rock core displacement process |
| 08/07/2013 | CN103233729A Vacuum extraction method for rock core gas in natural gas hydrate drilling field |
| 08/07/2013 | CN103233728A Shale oil content forecasting method for Log-delta T logging evaluation |
| 08/07/2013 | CN103233727A Inversion method of stratum shear wave velocity radial sections |
| 08/07/2013 | CN103233726A Experimental calibration method of saturation degree and water production rate logging evaluation model of water-flooded layer |
| 08/07/2013 | CN103233725A Device and method for determining high temperature and high pressure full diameter core mud pollution evaluation |
| 08/07/2013 | CN102011579B Large-size interlayer-containing salt cavity-manufacturing test method |
| 08/06/2013 | US8502345 Reverse-conducting insulated gate bipolar transistor |
| 08/06/2013 | US8499831 Mud cake probe extension apparatus and method |
| 08/06/2013 | CA2645837C Method and apparatus for performing spectroscopy downhole within a wellbore |
| 08/01/2013 | WO2013112274A1 Systems, methods and devices for analyzing drilling fluid |
| 08/01/2013 | WO2013112261A1 Dirty fluid valve with chevron seal |
| 08/01/2013 | US20130192359 Formation evaluation probe set quality and data acquisition method |
| 08/01/2013 | US20130192358 Method and apparatus for testing lost circulation materials for subterranean formations |
| 08/01/2013 | US20130192357 Job Monitoring Methods And Apparatus For Logging-While-Drilling Equipment |
| 08/01/2013 | CA2856743A1 Systems, methods and devices for analyzing drilling fluid |
| 08/01/2013 | CA2850482A1 Enhanced 1-d method for prediction of mud weight window for subsalt well sections |
| 07/31/2013 | EP2618906A1 Low cut water sampling device |
| 07/31/2013 | CN203101377U High-pressure resistant three-dimensional experimental facility for physical simulation gas reservoir development |
| 07/31/2013 | CN203098438U Electronically controlled drilling-type well wall coring overflow speed regulating device |
| 07/31/2013 | CN203097890U Dynamic monitoring instrument for parameters of liquid in shaft |
| 07/31/2013 | CN203097889U Electrode system structure of logging instrument while drilling |
| 07/31/2013 | CN203097888U Drilling-type well wall coring three-arm pushing and supporting system |
| 07/31/2013 | CN203097887U Device for testing gas production contribution ability of coal bed with different fracture development degrees |
| 07/31/2013 | CN203097886U Calibration device of measurement while drilling (MWD) resistivity logging instrument |
| 07/31/2013 | CN203097885U Medium mixed injection device |
| 07/31/2013 | CN203097879U Inflow dynamic two-dimensional visible simulation device of horizontal well and straight well |
| 07/31/2013 | CN203097871U Pole plate electrode system for logging instrument and pole plate assembly for logging instrument |
| 07/31/2013 | CN203097866U Sealing outer shell for oil well downhole detecting device |
| 07/31/2013 | CN203097864U Complex structural well shaft oil-gas-water three-phase fluid mass-variable flow simulating device |
| 07/31/2013 | CN203097838U Oil and gas well producing test manifold device |
| 07/31/2013 | CN103225507A Mechanical backup device for petroleum logging tool |
| 07/31/2013 | CN103225506A Method for establishing three-part automatic parallel-series electric conduction saturation degree model |
| 07/31/2013 | CN103225500A Novel water flooding layer logging evaluation method applying three parameters self-consistent iterative algorithm |
| 07/31/2013 | CN102226392B Multi-parameter monitoring device of oil well and working method thereof |
| 07/31/2013 | CN102121377B Pressure-while-drilling measuring device and measurement method thereof |
| 07/31/2013 | CN102052072B Sand-filled pipe device of circular truncated cone shaped cylinder body simulating two-dimensional drill core |
| 07/31/2013 | CN102052071B Frustum cylinder-shaped near wellbore zone shear simulation device with sand prevention compacted sand bodies |
| 07/31/2013 | CN101963609B Mud cake performance comprehensive evaluation method and device |
| 07/31/2013 | CN101942994B Water-flooded layer water productivity quantitative forecasting method and system thereof |
| 07/31/2013 | CN101845943B Universal packer for through cable |
| 07/31/2013 | CN101592031B A combined propagation and lateral resistivity downhole tool |
| 07/31/2013 | CA2804611A1 Methods and apparatus for characterization of hydrocarbon reservoirs |
| 07/30/2013 | US8496054 Methods and apparatus to sample heavy oil in a subterranean formation |
| 07/25/2013 | WO2013110009A1 Vibrating wire viscometers |
| 07/25/2013 | WO2013109964A1 Spectrometric device for the analysis of environmental and geological samples |
| 07/25/2013 | WO2013109716A1 Method for characterization of hydrocarbon reservoirs |
| 07/25/2013 | WO2013109277A1 Fossil recognition apparatus, systems, and methods |
| 07/25/2013 | WO2013074179A3 Perforating stimulation bullet |
| 07/25/2013 | US20130186621 Dirty fluid valve with chevron seal |
| 07/25/2013 | CA2861305A1 Fossil recognition apparatus, systems, and methods |
| 07/24/2013 | CN203085662U Novel battery clamping mechanism |
| 07/24/2013 | CN203081438U Mechanical oil recovery well opening sampler |
| 07/24/2013 | CN203081437U High vapor-liquid ratio gas-condensate well pre-separation sampling short circuit |
| 07/24/2013 | CN203081436U Multilayer laminated coalbed methane reservoir producing interlamination interference mechanism simulation device |
| 07/24/2013 | CN203081435U Quantitative degassing device |
| 07/24/2013 | CN203081434U Compensated neutron logger |
| 07/24/2013 | CN203081430U High-temperature and high-pressure sand bed leaking stoppage simulation device |
| 07/24/2013 | CN203081427U Horizontal well logging metal umbrella fluid production profile tester protection device |
| 07/24/2013 | CN103216223A Single sidewall contact device for microsphere focusing logging instrument |
| 07/24/2013 | CN102102515B Coring selector with gear indication function for well wall |
| 07/24/2013 | CN101287889B Apparatus, method and system for improved reservoir simulation using an algebraic cascading class linear solver |
| 07/23/2013 | US8490704 Technique of fracturing with selective stream injection |
| 07/23/2013 | US8490694 Single packer system for fluid management in a wellbore |
| 07/23/2013 | CA2718452C Multi-channel source assembly for downhole spectroscopy |
| 07/19/2013 | CA2802572A1 Assessing stress strain and fluid pressure in strata surrounding a borehole based on borehole casing resonance |
| 07/18/2013 | WO2013106808A1 Injection for sampling heavy oil |
| 07/18/2013 | WO2013106736A1 Asphaltene content of heavy oil |
| 07/18/2013 | WO2013105864A1 Method and system for wireless in-situ sampling of a reservoir fluid |
| 07/18/2013 | WO2013076242A3 Test equipment simulating multiple fluid sequences |
| 07/18/2013 | WO2013049775A4 Scintillation detection device with pressure sensitive adhesive |
| 07/18/2013 | WO2012140200A3 Downhole fast-acting shut-in valve system |
| 07/18/2013 | WO2012107727A3 Well testing and production apparatus and method |
| 07/17/2013 | EP2614218A2 Machine, computer program product and method to carry out parallel reservoir simulation |
| 07/17/2013 | CN203068010U Through-casing resistivity logging instrument hydraulic automatic sealing connector |
| 07/17/2013 | CN103210181A Formation sensing and evaluation drill |
| 07/17/2013 | CN103210180A System and method for estimating fluid distribution in a subterranean reservoir |
| 07/17/2013 | CN103206212A Downhole multi-phase fluid characteristic measuring sensor and working method thereof |
| 07/17/2013 | CN103206211A Horizontal-well-oriented drilling layer ranging radar device |