| 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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| 06/28/2012 | US20120160477 Large bore jar for a drill string |
| 06/28/2012 | CA2821899A1 Sampling tool with dual flowline architecture |
| 06/28/2012 | CA2821727A1 Sampling assembly for a single packer |
| 06/28/2012 | CA2820344A1 Method to characterize underground formation |
| 06/27/2012 | EP2469021A1 Method for building a flow model associated with capillary pressure curves and/or relative permeability curves |
| 06/27/2012 | CN202284470U 一种测井马龙头 Logging and horse leader |
| 06/27/2012 | CN202284469U 油井用旋转联接器 Wells with rotary coupling |
| 06/27/2012 | CN202284467U 沉降式油样收集器 Sunken oil sample collector |
| 06/27/2012 | CN102518434A Micro-detection probe for nuclear magnetic resonance analysis of fluid |
| 06/27/2012 | CN102518433A Target point adjusting method for horizontal well in thin carbonate reservoir |
| 06/27/2012 | CN102518432A Test device capable of simulating plugging of high temperature and high pressure dropping strata |
| 06/27/2012 | CN102518431A Multi-parameter logging method while drilling based on controllable neutron source |
| 06/27/2012 | CN102518430A Method and device for evaluating properties of stratum interface near to well bottom on basis of impact method |
| 06/27/2012 | CN102518429A Device and method for calibrating orientational double-gamma instrument balance |
| 06/27/2012 | CN102518428A Oily water layer recognition method and device |
| 06/27/2012 | CN102518424A Compound measuring device for resistivity and temperature of fluid |
| 06/27/2012 | CN102518421A Physical simulation visualization experimental device and forming method thereof |
| 06/27/2012 | CN101280680B Three-phase flow measuring device |
| 06/27/2012 | CN101253309B Rotary coring device and method for acquiring a sidewall core from an earth formation |
| 06/21/2012 | WO2012082586A1 Improved constrained pressure residual preconditioner for efficient solution of the adjoint equation |
| 06/21/2012 | WO2012082481A2 Chemical scavenger for downhole chemical analysis |
| 06/21/2012 | WO2012082191A1 A method for mixing fluids downhole |
| 06/21/2012 | WO2011080640A3 Look ahead advance formation evaluation tool |
| 06/21/2012 | US20120152548 Method to characterize underground formation |
| 06/21/2012 | US20120152547 Wettability analysis of disaggregated material |
| 06/21/2012 | US20120152010 Apparatus and Measuring Stress in a Subterranean Formation |
| 06/21/2012 | CA2822058A1 Improved constrained pressure residual preconditioner for efficient solution of the adjoint equation |
| 06/20/2012 | EP2464824A2 Reservoir architecture and connectivity analysis |
| 06/20/2012 | CN102507578A Instrument for on-line monitoring hydrogen sulfide in drilling fluid |
| 06/20/2012 | CN102505939A Stratified fluid monitoring and sampling device based on pressure pulse |
| 06/20/2012 | CN102505938A Well periphery ultrasonic imaging downhole cartridge scanning head |
| 06/20/2012 | CN102505935A Excitation circuit of transducer array of three-dimensional acoustic wave downhole instrument |
| 06/19/2012 | US8204728 Systems and methods for improved positioning of pads |
| 06/17/2012 | CA2762454A1 Distributed acoustic sensing (das)-based flowmeter |
| 06/14/2012 | WO2012078204A1 Gas generator for pressurizing downhole samples |
| 06/14/2012 | US20120150515 In-Situ Stress Measurements In Hydrocarbon Bearing Shales |
| 06/14/2012 | US20120145461 Coring apparatus with sensors |
| 06/14/2012 | US20120145459 Seismic tool assembly for use in anchor insertion |
| 06/14/2012 | US20120145400 method for mixing fluids downhole |
| 06/13/2012 | CN202273675U 钢丝绳头固定器 Rope Head Holder |
| 06/13/2012 | CN202273669U 一种放射性同位素示踪剂井下释放器 A radioactive isotope tracer downhole releaser |
| 06/13/2012 | CN1644875B Apparatus and method for addressing borehole eccentricity effects |
| 06/13/2012 | CN102498260A Core drill and coring method |
| 06/13/2012 | CN102494428A Hydraulic down-hole refrigerator |
| 06/13/2012 | CN102493768A High-frequency pulsed jet flow resonance well drilling device and well drilling method thereof |
| 06/07/2012 | WO2012073145A1 Method for measuring pressure in an underground formation |
| 06/07/2012 | US20120138364 System and method for assessing hydrogen sulfide in a hydrocarbon extraction well in situ in an ongoing manner |
| 06/07/2012 | US20120138363 System and method for assessing hydrogen sulfide in a hydrocarbon extraction well in situ in an ongoing manner |
| 06/07/2012 | US20120138292 Gas Generator For Pressurizing Downhole Samples |
| 06/07/2012 | US20120137764 Detecting Gas Compounds For Downhole Fluid Analysis |
| 06/06/2012 | EP2460004A2 Phase behavior analysis using a microfluidic platform |
| 06/06/2012 | EP2459839A1 Core drill and coring method |
| 06/06/2012 | CN202266252U 一种探头式绞车传感器 One kind of sensor probe winch |
| 06/06/2012 | CN102486089A Isoline-based three-dimensional geologic structure map remodeling system |
| 06/06/2012 | CN102486088A Horizontal well geosteering system |
| 06/06/2012 | CN102486084A System for developing natural gas by gasifying deep coal |
| 06/05/2012 | US8195400 Directional resistivity imaging using harmonic representations |
| 06/05/2012 | CA2646843C Method of and apparatus for measuring tensor resistivity |
| 06/03/2012 | CA2725495A1 Monitored filament insertion resitivity test |
| 05/31/2012 | WO2012071226A1 Electrical methods seismic interface box |
| 05/31/2012 | WO2012069036A1 Method for measuring drilled cores |
| 05/31/2012 | WO2012047693A3 Formation sensing and evaluation drill |
| 05/31/2012 | WO2012033693A3 Machine, computer program product and method to carry out parallel reservoir simulation |
| 05/31/2012 | US20120132467 System and method of strain measurement amplification |
| 05/31/2012 | US20120132419 Modular Pumpouts and Flowline Architecture |
| 05/30/2012 | CN202259006U Underground pressure control switch of logging-while-drilling neutron logger |
| 05/30/2012 | CN202250065U Unpowered oil well wellhead separation sampler |
| 05/30/2012 | CN202250064U Sample transfer system of formation tester |
| 05/30/2012 | CN202250063U Sampling system of formation tester |
| 05/30/2012 | CN202250062U Pollution-free sampling device for oil well |
| 05/30/2012 | CN202250061U Ultrasonic vibration type continuous and quantitative degassing device for oil drilling liquid |
| 05/30/2012 | CN202250060U Sampler barrel for petroleum exploration |
| 05/30/2012 | CN202250059U Pump suction-draining device for formation tester |
| 05/30/2012 | CN202250058U Short-time pressure control formation testing process pipe string |
| 05/30/2012 | CN202250057U Muddy water preventing device for boring inspection of photoelectric probe |
| 05/30/2012 | CN202250056U Evaluation test device for simulating formation damage by oily sewage |
| 05/30/2012 | CN202250055U Probe system |
| 05/30/2012 | CN202250054U Long probe system |
| 05/30/2012 | CN202250048U Safe draining system |
| 05/30/2012 | CN202250035U Flexible insulating short joint |
| 05/30/2012 | CN202249940U Underground hydraulic-control mud one-way valve |
| 05/30/2012 | CN202249934U Oil well sampling valve anti-theft device |
| 05/30/2012 | CN1987045B Formation evaluation while drilling |
| 05/30/2012 | CN1880723B Modular connector and method |
| 05/30/2012 | CN102478662A 纵波裂缝预测与剥层方法 P-wave and delamination fracture prediction method |
| 05/30/2012 | CN102477864A 一种煤层气注入压降测试的室内实验模拟方法 One kind of coalbed methane injected into laboratory experiments drop test simulation methods |
| 05/30/2012 | CN102477750A 填埋场防渗层hdpe膜漏洞修补方法和装置 Landfill hdpe membrane impermeable layer method and apparatus for bug fixes |
| 05/30/2012 | CN101614648B High-temperature high-pressure sedimentation tester |
| 05/30/2012 | CN101539018B Deep seafloor sampling device |
| 05/30/2012 | CN101343998B High temperature magnet of nuclear magnetic resonance logging instrument and preparation method thereof |
| 05/29/2012 | US8186211 In-borehole gas monitor apparatus and method |
| 05/29/2012 | CA2571788C Drilling wellbores with optimal physical drill string conditions |
| 05/24/2012 | WO2012065258A1 Process for determining mobile water saturation in a reservoir formation |
| 05/24/2012 | DE102010051861A1 Verfahren zur Erfassung von Bohrkernen A method for detecting cores |
| 05/23/2012 | EP2454449A1 Methods for characterization of petroleum fluid and application thereof |
| 05/23/2012 | CN202230826U Magnet structure for nuclear magnetic resonance logging-while-drilling instrument used in oil well |
| 05/23/2012 | CN202228072U Composite sampling device for oil well |
| 05/23/2012 | CN202228071U Stratum perforation testing device |
| 05/23/2012 | CN202228070U Automatic control sampler applied under airtight condition and under pressure |
| 05/23/2012 | CN202228063U Sealed joint of well logging instrument |