| 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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| 11/06/2013 | CN103382838A Reservoir stratum analysis method and device based on pressing-ability of fracturing geological body |
| 11/06/2013 | CN102200010B Logging underground instrument backup control device |
| 11/06/2013 | CN101883984B Methods and apparatus to determine a concentration of nitrogen in a downhole fluid |
| 11/06/2013 | CN101363315B Method for quantifying resistivity and hydrocarbon saturation in thin bed formations |
| 11/05/2013 | CA2593943C Integrated electrode resistivity and em telemetry tool |
| 11/01/2013 | CA2814460A1 Nmr detection of water and hydrocarbons during induced alteration processes |
| 10/31/2013 | WO2013162795A1 Methods for optically determining a characteristic of a substance |
| 10/31/2013 | WO2013162787A1 Methods for optically determining a characteristic of a subsbstance |
| 10/31/2013 | WO2013162753A1 Devices for optically determining a characteristic of a substance |
| 10/31/2013 | WO2013162744A1 Devices for optically determining a characteristic of a substance |
| 10/31/2013 | WO2013162491A1 Simultaneous data transmission of multiple nodes |
| 10/31/2013 | WO2013162400A1 Determining physical properties of solid materials suspended in a drilling fluid |
| 10/31/2013 | US20130284443 Sampling Assembly for a Well |
| 10/30/2013 | EP2656116A2 Sampling tool with dual flowline architecture |
| 10/30/2013 | EP2655797A2 Sampling assembly for a single packer |
| 10/30/2013 | CN203257410U Portable oil-gas well wellhead gas-liquid airtight sampler |
| 10/30/2013 | CN103380259A In situ sampling and analysis system for a drill rig and a drill rig incorporating same |
| 10/30/2013 | CN103375167A Friction-type sampler |
| 10/30/2013 | CN103375166A Method for determining content of a plurality of mineral constituents in stratum |
| 10/30/2013 | CN103375165A Single-fissure flow medium physical property fine control method |
| 10/30/2013 | CN103375163A Portable wellhead weight indication recorder |
| 10/30/2013 | CN102322258B Drill-following acoustic logging method and device capable of reducing and insulating sound on drill collar |
| 10/30/2013 | CN102094624B Power supply circuit of main current for microsphere focused logging |
| 10/30/2013 | CN102094623B Voltage and current measuring circuit of micro-spherically focused logging instrument |
| 10/30/2013 | CN102094620B Multi-angle eccentric mechanism for petroleum logging |
| 10/30/2013 | CN102041992B Underground backup emergency escape system of logging instrument |
| 10/29/2013 | US8567496 System and method for managing a subterranean formation |
| 10/29/2013 | US8567494 Well operating elements comprising a soluble component and methods of use |
| 10/24/2013 | WO2013158946A1 Apparatus, system, and method for reducing dead volume in a sample container |
| 10/24/2013 | WO2013158729A1 Determining a limit of failure in a wellbore wall |
| 10/24/2013 | WO2013158120A1 High pressure rock core testing |
| 10/24/2013 | WO2013049014A3 Apparatus for evaluating rock properties while drilling using drilling rig-mounted acoustic sensors |
| 10/24/2013 | US20130282291 Monitoring of reservoir fluid moving along flow pathways in a producing oil field using passive seismic emissions |
| 10/24/2013 | US20130277114 Sleeve for logging while drilling electromagnetic sensor |
| 10/24/2013 | US20130277048 Method of tracing flow of hydrocarbon from a subterranean reservoir |
| 10/23/2013 | EP2652266A2 Method of determining reservoir pressure |
| 10/23/2013 | CN203248150U Oil layer sampling device |
| 10/23/2013 | CN203248149U Petroleum logging instrument mechanical sidewall contact device |
| 10/23/2013 | CN203248148U Drilling fluid and rock interaction simulating and evaluating system |
| 10/23/2013 | CN103367866A Magnetic dipole antenna and device for measuring orientated electrical resistivity of stratum |
| 10/23/2013 | CN103362505A Method for judging and identifying drilling-encounter oil layer under condition that drilling fluid adding oil exists |
| 10/23/2013 | CN103362504A Formation interface detecting device |
| 10/23/2013 | CN103362503A Borehole stability evaluation method for highly-deviated well |
| 10/23/2013 | CN103362502A Method and system for eliminating direct wave interference in acoustic logging, and acoustic logging instrument |
| 10/23/2013 | CN103362500A Detection system and method for cracks and caverns of fractured-vuggy carbonate reservoirs along with drilling |
| 10/23/2013 | CN103362475A Anti-theft airtight quick sampling valve |
| 10/22/2013 | CA2720916C Apparatus for continuous measurement of heterogeneity of geomaterials |
| 10/22/2013 | CA2634030C Method and apparatus for in-situ side-wall core sample analysis |
| 10/22/2013 | CA2597000C Methods and apparatus for analyzing fluid properties of emulsions using fluorescence spectroscopy |
| 10/17/2013 | WO2013155508A1 Method and apparatus to prepare drill cuttings for petrophysical analysis by infrared spectroscopy and gas sorption |
| 10/17/2013 | WO2013155125A1 Reservoir and completion quality assessment in unconventional (shale gas) wells without logs or core |
| 10/17/2013 | WO2013155124A1 Methods and appratus for simultaneous estimation of quantitative minerology, kerogen content and maturity in gas shale and oil-bearing shale |
| 10/17/2013 | WO2013154956A1 Geomechanical logging tool |
| 10/17/2013 | WO2013154854A1 Methods of measuring porosity on unconventional rock samples |
| 10/17/2013 | WO2013154360A2 Water leak-detecting ground water pressure testing apparatus |
| 10/17/2013 | WO2013049044A3 Methods for evaluating rock properties while drilling using drilling rig-mounted acoustic sensors |
| 10/17/2013 | WO2013017859A3 A downhole device for data acquisition during hydraulic fracturing operation and method thereof |
| 10/17/2013 | US20130270011 Reservoir and completion quality assessment in unconventional (shale gas) wells without logs or core |
| 10/17/2013 | US20130270006 Drilling rig with continuous gas analysis |
| 10/17/2013 | US20130269933 Method and apparatus to prepare drill cuttings for petrophysical analysis by infrared spectroscopy and gas sorption |
| 10/17/2013 | US20130269931 Geomechanical logging tool |
| 10/17/2013 | DE102012007348A1 Ore scanner for detecting high mineral grains on rock recognizes mineral grains of ore by automatic/semi-automatic/manual ore microscopy via image transmission, spectral libraries, energy dispersive analysis |
| 10/17/2013 | CA2812690A1 Drilling rig with continuous gas analysis |
| 10/17/2013 | CA2812587A1 Gas trap with gas analyzer system for continuous gas analysis |
| 10/17/2013 | CA2812582A1 Method for continuous gas analysis |
| 10/16/2013 | EP2649275A1 Gas generator for pressurizing downhole samples |
| 10/16/2013 | CN203239341U Underground multi-phase fluid characteristic measuring transducer |
| 10/16/2013 | CN203239340U Needle-tube-type freeze-proof sampling valve |
| 10/16/2013 | CN203239339U Oil well gas-liquid separated type sampler |
| 10/16/2013 | CN203239338U Two-dimensional artificial core model for researching edge-bottom water oil reservoir water invasion rules |
| 10/16/2013 | CN203239337U Device for stabilizing well wall by drilling well with a finely controlled pressure |
| 10/16/2013 | CN203239336U Logging unit |
| 10/16/2013 | CN203239335U Electrical resistivity simulation unit body used for detecting characteristic indexes of underground measuring instrument |
| 10/16/2013 | CN203239334U Ground verifying device used for simulating underground stratum electrical resistivity |
| 10/16/2013 | CN203239324U Anti-freezing pressure gage sampling valve |
| 10/16/2013 | CN203239319U Mandrel used for induction logging instrument |
| 10/16/2013 | CN203239281U Anti-freezing anti-theft sampling valve |
| 10/16/2013 | CN203239279U Key-needle-tube-type antitheft freeze-proof sampling valve |
| 10/16/2013 | CN103352878A Supercharging device of formation pressure measurement-while-drilling instrument |
| 10/16/2013 | CN103352696A Method for measuring stratum oriented resistivity |
| 10/16/2013 | CN103352695A Visualization physical simulation device with consideration of interlamination fluid channeling |
| 10/16/2013 | CN103352694A Logging instrument with acoustoelectric combination |
| 10/16/2013 | CN103352693A Productivity prediction system and method based on oil gas content |
| 10/16/2013 | CN103352692A Optimized design method of reducing sonic system sound insulator of acoustic logging-while-drilling drill collar |
| 10/16/2013 | CN103352691A Orthogonal dipole acoustic logging sound system receiving device |
| 10/16/2013 | CN103352690A Transient electromagnetic logging transmitting probe |
| 10/16/2013 | CN102606145B Underground coal mine anti-explosion mud-pulse wireless measurement while-drilling system and using method thereof |
| 10/16/2013 | CN102352749B Recognition method and device of effective reservoirs of dolomite of karstic weathering crust |
| 10/16/2013 | CN102094642B Intraformationally heterogeneous model oil-water displacement efficiency evaluation system |
| 10/16/2013 | CN101793144B Auxiliary device for improving observing effect of drilling television imaging instrument in muddy water hole |
| 10/16/2013 | CN101649739B Method for improving measurement precision of stratum specific resistance |
| 10/15/2013 | US8556001 Process for determining the presence and/or quantity of H2S in subsoil and related apparatus |
| 10/15/2013 | US8555969 Methods and apparatus to change the mobility of formation fluids using thermal and non-thermal stimulation |
| 10/15/2013 | US8555968 Formation evaluation system and method |
| 10/15/2013 | US8555966 Formation testing apparatus and methods |
| 10/15/2013 | CA2712957C Downhole characterization of formation fluid as a function of temperature |
| 10/10/2013 | WO2013151859A1 Visualizing polynuclear aromatic hydrocarbons within the near infrared spectrum |
| 10/10/2013 | WO2013151455A1 Method for determining the water encroachment factor and the influx composition of an oil well |
| 10/10/2013 | WO2013149599A1 Deep softrock geostress test method and device based on flow stress recovery principle |
| 10/10/2013 | US20130264053 Gas generator for pressurizing downhole samples |