| 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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| 02/16/2011 | CN201747357U Logging sled |
| 02/16/2011 | CN201747355U Cable arrangement device in well-logging winch |
| 02/16/2011 | CN201747351U Lateral multi-lens endoscopic video well logging device |
| 02/16/2011 | CN201746269U Logging winch |
| 02/16/2011 | CN101976494A Real-time logging data acquisition and synchronous early-warning method |
| 02/16/2011 | CN101975075A Method for determining coal mass gas content by advancing face gas emission parametric inversion |
| 02/16/2011 | CN101975065A Method for measuring mining stress of coal mine tunnel |
| 02/16/2011 | CN101975060A Rapid sampling system of deep hole gas |
| 02/16/2011 | CN101975038A Device for sampling mud rock by cooling air and rock sample sampling method thereof |
| 02/16/2011 | CN101270666B Tunnel influence geological condition section-expanding horizontal drilling estimation and prediction method |
| 02/15/2011 | US7886821 Apparatus and method for determining fluid properties |
| 02/15/2011 | CA2513533C Radially adjustable downhhole devices & methods for same |
| 02/14/2011 | CA2711167A1 Executing a utility in a distributed computing system based on an integrated model |
| 02/12/2011 | CA2712746A1 Online measurement system of radioactive tracers on oil wells head |
| 02/10/2011 | WO2011016642A2 Oil-pressure type fixed piston sampler |
| 02/10/2011 | WO2011014912A1 System, method and tool for managing activities |
| 02/10/2011 | WO2010124063A3 Use of chemically and geologically consistent constraints for obtaining elemental chemistry downhole |
| 02/10/2011 | US20110030465 Geochemical surveillance of gas production from tight gas fields |
| 02/09/2011 | EP2282006A1 Geological probing device |
| 02/09/2011 | CN201738920U Framework positioning structure of FDT modular formation tester |
| 02/09/2011 | CN201738919U Auxiliary device for improving observation effect of drilling television imaging instrument in turbid water hole |
| 02/09/2011 | CN201738294U Wireless portable movable testing platform for parameters of geotechnical engineering |
| 02/09/2011 | CN101967971A Ternary fluid non-separation on-line measurement instrument |
| 02/09/2011 | CN101967970A Method for measuring dynamic capillary pressure of core under conditions of reservoir temperature and pressure |
| 02/09/2011 | CN101967968A Three-cavity pressure separation device in high-temperature high-pressure container |
| 02/03/2011 | WO2011011839A1 Core drill and coring method |
| 02/03/2011 | WO2011011837A1 Inner tube of a core barrel |
| 02/03/2011 | DE102009058265A1 Vorrichtung zur Entnahme von strukturell unversehrten Bodenproben A device for taking soil samples of structurally intact |
| 02/03/2011 | CA2769312A1 Core drill and coring method |
| 02/02/2011 | EP2280147A2 Formation testing and sampling apparatus and methods |
| 02/02/2011 | EP2279330A1 Tool and method for determining formation parameter |
| 02/02/2011 | EP2279329A2 Management of measurement data being applied to reservoir models |
| 02/02/2011 | EP2044289B1 Packer variable volume excluder and sampling method therefor |
| 02/02/2011 | CN201730615U Evacuating saturation device for testing rock porosity |
| 02/02/2011 | CN201730614U Wired MWD gamma energy spectrum log tool |
| 02/02/2011 | CN201730613U Microearthquake monitoring system of non-coal mine |
| 02/02/2011 | CN201730612U 岩性密度测井仪 Lithology Density tool |
| 02/02/2011 | CN201730610U Four-bar mechanism of clamp piston |
| 02/02/2011 | CN101964156A Long-term preservation method for well core |
| 02/02/2011 | CN101963609A Mud cake performance comprehensive evaluation method and device |
| 02/02/2011 | CN101963057A Simulation experimental device for natural hydrate geological stratification |
| 02/02/2011 | CN101963056A Method for predicting carbonate formation pore pressure by using log information |
| 02/01/2011 | US7878271 Drill bit |
| 02/01/2011 | US7878269 Monitoring apparatus for core barrel operations |
| 02/01/2011 | US7878244 Apparatus and methods to perform focused sampling of reservoir fluid |
| 02/01/2011 | US7878243 Method and apparatus for sampling high viscosity formation fluids |
| 01/27/2011 | WO2011009287A1 System and method for testing gas migration process in coal and rock mass |
| 01/27/2011 | WO2007070748A9 Method and apparatus for in-situ side-wall core sample analysis |
| 01/27/2011 | US20110017512 Instrumentation of appraisal well for telemetry |
| 01/26/2011 | EP2278123A2 Focused sampling of formation fluids |
| 01/26/2011 | EP2277065A2 System, program product, and related methods for performing automated real-time reservoir pressure estimation enabling optimized injection and production strategies |
| 01/26/2011 | CN201723222U Gas-drainage drilling sampling device |
| 01/26/2011 | CN201723221U Pipeline large sample collector |
| 01/26/2011 | CN201723220U On-line nuclear magnetic resonance drilling fluid oil content analysis and detection device |
| 01/26/2011 | CN201723219U Wet drilling equipment |
| 01/26/2011 | CN201723209U Watering process combination wellhead |
| 01/26/2011 | CN101960087A Systems and methods for well data analysis |
| 01/26/2011 | CN101956549A Electromagnetic focusing sleeve screw thread logging instrument |
| 01/26/2011 | CN101956541A Underground switching well used for measuring, directly reading and storing coalbed methane |
| 01/26/2011 | CN101586470B Advanced drilling method for high-pressure water-rich filling cavity |
| 01/25/2011 | US7874358 Method for oil sand exploration and development |
| 01/25/2011 | US7874357 Diagnosis of formation characteristics in wells |
| 01/25/2011 | US7874356 Single packer system for collecting fluid in a wellbore |
| 01/25/2011 | US7874206 Single phase fluid sampling apparatus and method for use of same |
| 01/25/2011 | CA2614579C Apparatus for warming entrained gases from recovered wellbore fluid samples |
| 01/25/2011 | CA2480719C Apparatus for sampling drill hole cuttings |
| 01/25/2011 | CA2470512C Apparatus and methods for downhole determination of characteristics of formation fluids |
| 01/20/2011 | WO2011007268A1 Methods for characterization of petroleum fluid and application thereof |
| 01/20/2011 | WO2010123746A3 Televiewer image wood-grain reduction techniques |
| 01/20/2011 | WO2008066895A3 Discrete element modeling of rock destruction under high pressure conditions |
| 01/20/2011 | US20110011583 Systems and methods to filter and collect downhole fluid |
| 01/20/2011 | US20110011576 Acoustic generator and associated methods and well systems |
| 01/19/2011 | EP2275642A1 System for detection and monitoring of deep land subsidence |
| 01/19/2011 | CN201714370U Underground safety valve multifunctional detecting bracket |
| 01/19/2011 | CN101952704A Method of analyzing a number of hydrocarbons contained in a drilling fluid, and associated device |
| 01/19/2011 | CN101949973A Method for measuring ground potential |
| 01/19/2011 | CN101949289A Multi-medium coupling device for stratigraphic simulation experiment |
| 01/19/2011 | CN101949288A Direct-shear measuring method of drilling rock mass specimen preparation |
| 01/19/2011 | CN101949286A Remote real-time tracking method for well path |
| 01/18/2011 | US7870782 Method and apparatus for determining the properties of drilling fluids |
| 01/18/2011 | CA2485822C Fluid sampling methods and apparatus for use in boreholes |
| 01/17/2011 | CA2708894A1 Radial waves in a borehole and stoneley waves for measuring formation permeability and electroacoustic constant |
| 01/13/2011 | WO2011005920A2 Borehole stress module and methods for use |
| 01/13/2011 | WO2010120600A3 Strength (ucs) of carbonates using compressional and shear acoustic velocities |
| 01/13/2011 | WO2010120593A3 A microfluidic oscillating tube densitometer for downhole applications |
| 01/13/2011 | WO2010118120A3 Method for taking gamma-gamma density measurements |
| 01/13/2011 | WO2010114811A3 Method and apparatus for estimating formation permeability and electroacoustic constant of an electrolyte-saturated multi-layered rock taking into account osmosis |
| 01/13/2011 | CA2833576A1 Sampling and evaluation of subterranean formation fluid |
| 01/13/2011 | CA2709605A1 Sampling and evaluation of subterranean formation fluid |
| 01/12/2011 | EP2271825A2 Apparatus and method for discharging multiple fluids downhole |
| 01/12/2011 | EP2271824A1 Geochemical surveillance of gas production from tight gas fields |
| 01/12/2011 | CN201705350U Large sampler barrel of formation evaluation log tool |
| 01/12/2011 | CN201705349U Closed air bag for extracting air by drilling hole in ice snow |
| 01/12/2011 | CN201705348U Pressure-bearing housing of petroleum logging instrument |
| 01/12/2011 | CN201705347U Lithology density logging instrument |
| 01/12/2011 | CN201705333U Special centralizer for highly-deviated well |
| 01/12/2011 | CN201705329U Balanced thrust multi-arm pushing device |
| 01/12/2011 | CN201705328U Propeller plug-and-socket connection structure |
| 01/12/2011 | CN201705327U Multi-core logging instrument connecting structure |
| 01/12/2011 | CN201705324U Multi-angle eccentric mechanism for petroleum logging |