| 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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| 02/28/2012 | US8122956 Magnetic stirrer |
| 02/28/2012 | US8122953 Drainage of heavy oil reservoir via horizontal wellbore |
| 02/23/2012 | WO2012024496A2 Methods for downhole sampling of tight formations |
| 02/23/2012 | WO2012024492A2 Methods for borehole measurements of fracturing pressures |
| 02/23/2012 | WO2012024490A2 Methods for testing stimulation fluids |
| 02/23/2012 | US20120043966 Method and Apparatus for Determining Formation Water Saturation During Drilling |
| 02/23/2012 | US20120043080 Methods for downhole sampling of tight formations |
| 02/23/2012 | US20120043078 Methods for testing stimulation fluids |
| 02/23/2012 | US20120043077 Methods for borehole measurements of fracturing pressures |
| 02/22/2012 | EP2419765A2 A microfluidic oscillating tube densitometer for downhole applications |
| 02/22/2012 | CN202148903U 一种地化录井仪 An earth-based logging instrument |
| 02/22/2012 | CN202148902U 具有自动生成密码功能的电子锁 With automatically generated password feature electronic lock |
| 02/22/2012 | CN202148901U 一种模拟地层压力的试验装置 An analog formation pressure testing device |
| 02/22/2012 | CN202148900U 模拟储层条件下孔隙空间压力恒定系统 Pore space under simulated reservoir conditions constant pressure system |
| 02/22/2012 | CN202148897U 新型油井测试仪测试垫片 The new oil tester shims |
| 02/22/2012 | CN102359372A Horizontal sidewall contact device |
| 02/22/2012 | CN102359371A Method for determining position and property of weak structural plane through intermediate-small aperture drilling |
| 02/22/2012 | CN102359370A Intelligent tester |
| 02/22/2012 | CN102359350A Centering device |
| 02/22/2012 | CN102359346A Lunar soil deep drilling sample recycling mechanism |
| 02/22/2012 | CN101302922B 水平定向钻穿越砂卵砾石地层的施工方法 Horizontal directional drilling construction methods sand gravel formations |
| 02/21/2012 | US8118097 Formation evaluation while drilling |
| 02/21/2012 | CA2514735C Permanently eccentered formation tester |
| 02/21/2012 | CA2434657C Determining the pvt properties of a hydrocarbon reservoir fluid |
| 02/16/2012 | US20120041681 Water Fraction Measuring Sensor and Method |
| 02/16/2012 | US20120037427 Drilling System for Enhanced Coring and Method |
| 02/16/2012 | US20120037422 Drilling tool, apparatus and method for underreaming and simultaneously monitoring and controlling wellbore diameter |
| 02/16/2012 | US20120036923 Tracer method to estimate rates of methane generation through augmentation or biostimulation of the sub-surface |
| 02/15/2012 | CN202144739U 高压防盗快速测压取样接头 Pressure sampling high pressure quick connector theft |
| 02/15/2012 | CN102352749A Recognition method and device of effective reservoirs of dolomite of karstic weathering crust |
| 02/15/2012 | CN102352748A Polar plate of micro-disc type focused logging device |
| 02/14/2012 | US8113280 Formation tester tool assembly |
| 02/14/2012 | US8113043 Downhole fluid property chromatography |
| 02/14/2012 | US8113042 Gravity measurment methods for monitoring reservoirs |
| 02/14/2012 | US8113041 Gravitational method and apparatus for measuring true vertical depth in a borehole |
| 02/14/2012 | CA2501480C System and method for installation and use of devices in microboreholes |
| 02/09/2012 | WO2011146249A3 Downhole marking apparatus and methods |
| 02/08/2012 | EP2414632A1 A method for the collection of samples of soil and a vehicle intended to be used with the method |
| 02/08/2012 | EP2414631A1 Method for modeling fracture network, and fracture network growth during stimulation in subsurface formations |
| 02/08/2012 | EP2414630A2 Method and apparatus for estimating formation permeability and electroacoustic constant of an electrolyte-saturated multi-layered rock taking into account osmosis |
| 02/08/2012 | CN202140085U 一种钻井取样装置 One kind of drilling sampling device |
| 02/08/2012 | CN1696473B 非导电液中钻探时的地层成像 Forming a non-conductive liquid formation during drilling |
| 02/08/2012 | CN102346806A High-water-cut oil field layer recombination scheme selection method and high-water-cut oil field layer recombination scheme selection system |
| 02/08/2012 | CN102345456A Deep water sampling and detecting device |
| 02/08/2012 | CN101328786B 钻井自动灌浆控制方法及控制系统 Drilling automatic filling control method and control system |
| 02/07/2012 | US8109334 Sampling and evaluation of subterranean formation fluid |
| 02/07/2012 | US8109140 Downhole sampling apparatus and method for using same |
| 02/02/2012 | US20120024600 Method and Apparatus for Resistivity Measurements |
| 02/02/2012 | US20120024051 Areal monitoring using distributed acoustic sensing |
| 02/02/2012 | US20120024050 Method And Apparatus For In-Situ Wellbore Measurements |
| 02/02/2012 | DE102009058265B4 Vorrichtung zur Entnahme von strukturell unversehrten Bodenproben A device for taking soil samples of structurally intact |
| 02/02/2012 | CA2747275A1 Method and apparatus for measuring formation anisotropy while drilling |
| 02/01/2012 | CN202132038U 一种新型sp短节 A new short section sp |
| 02/01/2012 | CN202132037U 一种声波测井仪的声波逻辑电路 One kind of sonic logging tool sonic logic |
| 02/01/2012 | CN202132036U 松散承压含水层采动水位变化规律的实验装置 Mining unconsolidated confined aquifer water level variation of the experimental apparatus |
| 02/01/2012 | CN202132031U 一种用于石油测井仪的继电器控制电路 An oil well logging instrument relay control circuit |
| 02/01/2012 | CN102337886A System of performing down-hole measurement on oil gas in slurry while drilling |
| 02/01/2012 | CN102337885A Method for directly detecting free gases in stratum |
| 02/01/2012 | CN101949973B 地电位测量方法 Ground measurement methods |
| 02/01/2012 | CN101368481B 石油钻井中核磁共振岩石含油丰度的定量分析方法 Quantitative analysis of oil drilling in rock oil abundance NMR |
| 02/01/2012 | CN101294491B 一种井下信息自适应传输方法和系统 A downhole adaptive transmission method and system information |
| 01/31/2012 | US8106659 In situ measurements in formation testing to determine true formation resistivity |
| 01/31/2012 | US8104536 Kerogen extraction from subterranean oil shale resources |
| 01/31/2012 | CA2616274C Nuclear magnetic resonance module |
| 01/26/2012 | WO2012012098A1 Method for in situ fluid assessment and optimization during wellbore displacement operations |
| 01/26/2012 | WO2012012006A1 Small core generation and analysis at-bit as lwd tool |
| 01/26/2012 | US20120018152 Fluid control in reservior fluid sampling tools |
| 01/26/2012 | US20120018147 Valve assembly employable with a downhole tool |
| 01/26/2012 | CA2805460A1 Small core generation and analysis at-bit as lwd tool |
| 01/26/2012 | CA2804053A1 Method for in situ fluid assessment and optimization during wellbore displacement operations |
| 01/25/2012 | EP2409000A1 Subsea sampling system and method |
| 01/25/2012 | CN102331588A Nuclear magnetic resonance logging instrument as well as probe magnet and probe thereof |
| 01/25/2012 | CN102330553A Method for identifying dynamic spectrum fluid for MDI (Manual Data Input) test |
| 01/25/2012 | CN102330552A Correction for low porosity effects on neutron gamma density |
| 01/25/2012 | CN102330551A Method and system for rectifying sound wave pressure in sound wave amplitude well logging |
| 01/25/2012 | CN102330422A In-situ test and acquisition instrument with positioning and wireless transmitting functions and use method thereof |
| 01/24/2012 | CA2594956C Systems and methods for downhole fluid compatibility testing and analysis |
| 01/19/2012 | WO2012009096A2 Microextraction probe |
| 01/19/2012 | WO2011130136A3 Dielectric spectroscopy for downhole fluid analysis during formation testing |
| 01/19/2012 | WO2011121495A3 Methods and apparatus for characterization of petroleum fluids and applications thereof |
| 01/19/2012 | US20120012393 Small Core Generation and Analysis At-Bit as LWD Tool |
| 01/19/2012 | US20120012392 Small Core Generation and Analysis At-Bit as LWD Tool |
| 01/19/2012 | US20120011927 Method of determining subterranean formation parameters |
| 01/18/2012 | EP2406608A1 Device and method of taking fluid samples offshore |
| 01/18/2012 | CN202117669U Oil sample collector of aquiferous oil well |
| 01/18/2012 | CN202117668U Pressure control sampler |
| 01/18/2012 | CN202117667U Downhole sampler of injection well |
| 01/18/2012 | CN202117666U Novel attitude holder for density instrument |
| 01/18/2012 | CN202117665U General-purpose intelligent unlocking system |
| 01/18/2012 | CN202117654U High-resolution density logging device |
| 01/18/2012 | CN202117580U Online logging centralizer for horizontal well |
| 01/18/2012 | CN202117048U Grouting plug |
| 01/18/2012 | CN102322259A Automatic degasser for comprehensive petroleum geological logging |
| 01/18/2012 | CN102322258A Drill-following acoustic logging method and device capable of reducing and insulating sound on drill collar |
| 01/18/2012 | CN102322241A Special well head device for formation test of oil and gas wells |
| 01/17/2012 | US8096355 Analysis of radar ranging data from a down hole radar ranging tool for determining width, height, and length of a subterranean fracture |
| 01/17/2012 | US8096354 Sensing and monitoring of elongated structures |
| 01/12/2012 | WO2012006093A2 Fluid sampling tool |
| 01/12/2012 | WO2012005725A1 Method and system of determining constituent components of a fluid sample |
| 01/11/2012 | CN102317572A Method and apparatus for controlling precession in a drilling assembly |