| 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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| 01/07/2014 | US8621920 Obtaining and evaluating downhole samples with a coring tool |
| 01/07/2014 | CA2788984C High efficiency fluid pumping apparatus and method |
| 01/07/2014 | CA2756285C Interferometry-based downhole analysis tool |
| 01/03/2014 | WO2014004613A1 Fluid loss control material tester |
| 01/03/2014 | WO2014004431A1 Sampling assembly with outer layer of rings |
| 01/03/2014 | WO2014004191A1 Neutrally-buoyant borehole investigation tools and methods |
| 01/03/2014 | WO2014004000A1 Evaluation of low resistivity low contrast productive formations |
| 01/03/2014 | WO2014003998A1 Impedance spectroscopy measurement device and methods for analysis of live reservoir fluids and assessment of in-situ corrosion of multiple alloys |
| 01/03/2014 | WO2014003913A1 Pore pressure measurement in low-permeability and impermeable materials |
| 01/03/2014 | WO2014003840A1 Method and apparatus for identifying fluid attributes |
| 01/02/2014 | US20140000965 Method for Hydrocarbon Well Completion |
| 01/01/2014 | CN203374276U Eccentric integrated dedicated well-testing instrument |
| 01/01/2014 | CN203374268U Coal mine ground stress horizontal orientation device convenient to push |
| 01/01/2014 | CN203374267U High-temperature high-pressure miniaturization communication adaptive logger instrument |
| 01/01/2014 | CN103485774A Self-sealing anti-theft sampling valve of oil well |
| 01/01/2014 | CN103485773A Method for determining multi-branch horizontal well branch parameters |
| 01/01/2014 | CN103485772A Well logging equipment, method and device |
| 01/01/2014 | CN103485771A Method for checking stratum loading capacity before well cementation |
| 01/01/2014 | CN103485770A Method and system of obtaining oil saturation based on artificial neural network |
| 01/01/2014 | CN103485769A Sand filling tube combination device for simulating fractured reservoir |
| 01/01/2014 | CN103485768A Method for forming acoustic logging curve |
| 01/01/2014 | CN103485762A Visual simulation shale micro-crack plugging capacity test system and method |
| 01/01/2014 | CN103485758A Method and device for performing fitting inversion by utilizing plurality of pieces of data to realize complex lithologic interpretation |
| 01/01/2014 | CN101802348B Methods for use of a wellbore tool |
| 01/01/2014 | CN101287890B Spectral imaging for downhole fluid characterization |
| 12/31/2013 | US8620636 Interpreting well test measurements |
| 12/31/2013 | US8616277 Real time formation pressure test and pressure integrity test |
| 12/27/2013 | WO2013192139A1 Methods and systems of increasing signal strength of oilfield tools |
| 12/27/2013 | WO2013191886A1 Thermal optical fluid composition detection |
| 12/27/2013 | WO2013191693A1 Method and apparatus for formation tester data interpretation with diverse flow models |
| 12/27/2013 | WO2013190093A2 A predictive flow assurance assessment method and system |
| 12/27/2013 | WO2013166129A3 Low frequency broad band ultrasonic transducers |
| 12/27/2013 | CA2877479A1 Method and apparatus for formation tester data interpretation with diverse flow models |
| 12/26/2013 | US20130341016 Sampling Assembly With Outer Layer Of Rings |
| 12/26/2013 | US20130340518 Downhole formation fluid contamination assessment |
| 12/26/2013 | US20130340517 Permeameter probe |
| 12/25/2013 | EP2677115A1 A predictive flow assurance assessment method and system |
| 12/25/2013 | EP2675996A2 Measurement pretest drawdown methods and apparatus |
| 12/25/2013 | EP2494145B1 Automated hydrocarbon reservoir pressure estimation |
| 12/25/2013 | CN203362159U Sampling device of microorganism crusting soil column |
| 12/25/2013 | CN203362112U Full-bore-type voltage-controlled underground well opening valve |
| 12/25/2013 | CN203362110U Novel anti-theft oil well sampling device |
| 12/25/2013 | CN103477029A Self-propelled simultaneous platform |
| 12/25/2013 | CN103473894A Earthquake monitoring and early warning system and working method thereof |
| 12/25/2013 | CN103470253A Underbalanced well drilling and logging detection sampling device |
| 12/25/2013 | CN103470252A Prompt neutron logging and uranium ore quantity determining technology based on above-thermal neutron time spectrum |
| 12/25/2013 | CN103470251A Pressure compensation structure of nuclear magnetic resonance logger |
| 12/25/2013 | CN103470250A Method and equipment for measuring pore structures and fluid characteristics of strata |
| 12/25/2013 | CN103470249A Apparatus and method for directional resistivity measurement while drilling using an antenna with a joint-coil structure |
| 12/25/2013 | CN101960087B Systems and methods for well data analysis |
| 12/24/2013 | US8613330 Coring tools and related methods |
| 12/24/2013 | CA2696816C Apparatus and method for fluid property measurements |
| 12/19/2013 | WO2013187904A1 System, method, & computer program product to determine placement of fracture stimulation points using mineralogy |
| 12/19/2013 | WO2013187890A1 Apparatus and method for pulse testing a formation |
| 12/19/2013 | WO2013187861A1 Fluid container reloading tool |
| 12/19/2013 | WO2013187860A1 Fluid sample capture tool |
| 12/19/2013 | WO2013187859A1 Fluid sampling tool with deployable fluid cartridges |
| 12/19/2013 | US20130333882 Flowpath identification and characterization |
| 12/19/2013 | US20130333877 System and Method of Assessing a Wellbore Servicing Fluid or a Component Thereof |
| 12/19/2013 | CA2876388A1 System, method, & computer program product to determine placement of fracture stimulation points using mineralogy |
| 12/19/2013 | CA2876266A1 Methods and related systems of building models and predicting operational outcomes of a drilling operation |
| 12/19/2013 | CA2876161A1 Apparatus and method for pulse testing a formation |
| 12/18/2013 | EP2673469A1 Method and tool for evaluating a geological formation |
| 12/18/2013 | EP2673468A2 Flow activated sensor assembly |
| 12/18/2013 | EP2673467A1 Method and arrangement to establish during down-the-hole drilling communication between the cavity of the drill string and the surrounding material |
| 12/18/2013 | EP2673466A2 Well testing and production apparatus and method |
| 12/18/2013 | EP2673465A2 Seismic-scale reservoir simulation of giant subsurface reservoirs using gpu-accelerated linear equation systems |
| 12/18/2013 | EP2673452A2 Integrated reaming and measurement system and related methods of use |
| 12/18/2013 | EP2537051B1 Apparatus and methods for providing information about one or more subterranean variables |
| 12/18/2013 | CN203347790U Concentric type mounting structure of water pumping test pipeline |
| 12/18/2013 | CN203347789U Coal mining phreatic water dynamic change simulation device |
| 12/18/2013 | CN203347779U Pressure-bearing case for petroleum logging instrument |
| 12/18/2013 | CN103452554A Flash evaporation prevention sealed sampling and metering device for high-temperature high-pressure saturated liquid |
| 12/18/2013 | CN103452553A Multifunctional oil-gas well casing gas-liquid separating, filtering and drying device |
| 12/18/2013 | CN103452552A Electric earth drill |
| 12/18/2013 | CN103452551A Rock powder extraction device |
| 12/18/2013 | CN103452550A Viscosity reducing effect evaluation method and device of heavy oil viscosity reducer under stratum seepage condition |
| 12/18/2013 | CN103452549A Experimental facility and experimental method for steam erosion of argillaceous intercalation rock |
| 12/18/2013 | CN103452548A Experimental facility and experimental method for evaluating steam reforming feature of reservoir rock |
| 12/18/2013 | CN103452547A Method and system for analyzing and processing subsequent flow data in well testing data |
| 12/18/2013 | CN103452518A Core shaft type sealed oil pipe shoes |
| 12/18/2013 | CN102071933B Method and device for sampling produced fluid of oil reservoir for microbial flooding |
| 12/17/2013 | US8607864 Live bottom hole pressure for perforation/fracturing operations |
| 12/17/2013 | CA2721369C Rock stress modification technique |
| 12/12/2013 | WO2013184432A1 Tubing test system |
| 12/12/2013 | WO2013184190A1 Assessing reservoir connectivity in hydrocarbon reservoirs |
| 12/11/2013 | CN203337129U Borehole imager for coal mine |
| 12/11/2013 | CN203335071U Portable loess sampler |
| 12/11/2013 | CN203335070U Multifunctional oil displacement physical simulation device |
| 12/11/2013 | CN203335069U Mining wireless drilling stress sensor |
| 12/11/2013 | CN203335068U Resistivity simulation unit easy to position relatively |
| 12/11/2013 | CN203335067U Resistivity simulation unit with stable physical property |
| 12/11/2013 | CN203335060U Rotation three-parameter short section |
| 12/11/2013 | CN103443396A Check valve assembly for well stimulation operations |
| 12/11/2013 | CN103442791A Mixture of a multiphase fluid |
| 12/11/2013 | CN103437762A Layered gas-liquid fluid sampling device in shallow well |
| 12/11/2013 | CN103437761A Hard electrode combined logging instrument for logging drill well |
| 12/11/2013 | CN103437760A Method for rapidly evaluating oil-water layer through array induction data |
| 12/11/2013 | CN103437759A Method for non-experimentally measuring T2 cutoff value of natural gas reservoir |
| 12/11/2013 | CN103437756A Dipole array acoustic logging instrument |