| 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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| 12/20/2012 | CA2839015A1 Systems and methods for measuring parameters of a formation |
| 12/19/2012 | EP2534333A1 Method and system for predicting the effect of microbes injected into an oil-bearing reservoir |
| 12/19/2012 | CN202614672U Alkane gas real-time on-line test device with method of infrared difference absorption spectroscopy |
| 12/19/2012 | CN202611692U System for eliminating direct wave interference in sound logging and acoustic logging instrument |
| 12/19/2012 | CN202611691U Scale box for nuclear magnetic resonance logger |
| 12/19/2012 | CN202611690U 580 logging system |
| 12/19/2012 | CN202611679U Leadless electromagnetic wave measurement while drilling device for coal mine |
| 12/19/2012 | CN202611678U Calibration device of well logging instrument |
| 12/19/2012 | CN102830433A Method for calculating anisotropy azimuth angle by using dipole transverse wave logging information based on frequency domain |
| 12/19/2012 | CN102828747A Petroleum drilling real-time monitoring system |
| 12/19/2012 | CN102828746A Pressure return device for water plugging profile control physical simulation experiment and use method of pressure return device |
| 12/19/2012 | CN102828745A Novel micro-spherical focusing logging instrument |
| 12/19/2012 | CN102828744A Quadrupole-source short-source-range full-wave acoustic logging instrument |
| 12/19/2012 | CN101560880B Supercritical well bore multi-phase flow test device |
| 12/18/2012 | CA2696581C Apparatus and methods to control fluid flow in a downhole tool |
| 12/13/2012 | WO2012168614A2 Method for determing the complex response of a permeable stratum |
| 12/13/2012 | WO2012122247A3 A method and apparatus for estimating a downhole fluid property using a miniature integrated circuit spectrometer |
| 12/13/2012 | WO2012122050A8 Systems, devices, and methods for enviromental monitoring in agriculture |
| 12/13/2012 | WO2012088417A3 Sampling tool with dual flowline architecture |
| 12/13/2012 | WO2011134028A8 Method and device for measuring mechanical characteristics of the ground |
| 12/13/2012 | US20120312598 Apparatuses and methods for determining temperature data of a component of an earth-boring drilling tool |
| 12/13/2012 | US20120312090 Method for evaluation of hydrocarbon content of shale |
| 12/12/2012 | CN202596728U Friction type sampler |
| 12/12/2012 | CN202596727U Oil sampling device for oil well |
| 12/12/2012 | CN202596726U Device for detecting down-hole hydrogen sulfide while drilling |
| 12/12/2012 | CN202596725U Sampler for stratum test |
| 12/12/2012 | CN202596724U Well head sampling device |
| 12/12/2012 | CN202596723U All-water value sampling mechanism of production profile logging instrument |
| 12/12/2012 | CN202596722U Physical simulation experiment device of fractured-vuggy oil deposit independent karst cave unit |
| 12/12/2012 | CN202596718U Portable wellhead hanging load indicating recorder |
| 12/12/2012 | CN202596700U Single sidewall contact device for micro-spherically focused tool |
| 12/12/2012 | CN202596655U Efficient blowout-control end cap for water injection well test |
| 12/12/2012 | CN102822447A Downhole spectroscopic detection of carbon dioxide and hydrogen sulfide |
| 12/12/2012 | CN102822446A Method and system for predicting the effect of microbes injected into an oil-bearing reservoir |
| 12/12/2012 | CN102817619A Combined advanced drilling exploration method for detecting water-free dissolving cavity and water dissolving cavity in tunnel |
| 12/12/2012 | CN102817608A Array type electrode system for induced polarization potential logging instrument |
| 12/12/2012 | CN102817592A Constant pressure gas releasing and recycling device of oil well casing with sampling and anti-blocking functions |
| 12/12/2012 | CN101858211B Method and device for simulating strata pressure in three-dimensional simulation test for producing oil by injecting multicomponent thermal fluid |
| 12/12/2012 | CN101749012B Method of determining oil reservoir exploitation level |
| 12/12/2012 | CN101430402B 烃监视电缆 Hydrocarbon monitor cable |
| 12/10/2012 | CA2779230A1 Method for cost effective sampling and characterization of heterogeneous unconventional hydrocarbon regions |
| 12/06/2012 | WO2012166864A2 Systems and methods for limiting winch overrun |
| 12/06/2012 | WO2012166289A2 Sand detection using magnetic resonance flow meter |
| 12/06/2012 | WO2011140166A8 Well fluid sampling system for use in heavy oil environments |
| 12/06/2012 | US20120305314 Optimized pressure drilling with continuous tubing drill string |
| 12/06/2012 | US20120305242 Method for determining geometric characteristics of a hydraulic fracture |
| 12/06/2012 | US20120304758 Low-frequency viscosity, density, and viscoelasticity sensor for downhole applications |
| 12/06/2012 | CA2836788A1 Systems and methods for limiting winch overrun |
| 12/05/2012 | CN202585890U Electromagnetic isolation bearing connector |
| 12/05/2012 | CN202578677U Formation fluid sample transferring device |
| 12/05/2012 | CN202578676U A small-diameter backup device for a cased well logging instrument |
| 12/05/2012 | CN202578633U Anti-freezing and anti-blocking sampling valve for heavy oil wellhead |
| 12/05/2012 | CN102812203A Method for dynamically assessing petroleum reservoir competency and increasing production and recovery through asymmetric analysis of performance metrics |
| 12/05/2012 | CN102808815A Stable pressure maintaining hydraulic pump valve system |
| 12/05/2012 | CN102808616A Formation tester |
| 12/05/2012 | CN102808615A Electronic circuit testing equipment for formation pressure tester while drilling |
| 12/05/2012 | CN102808612A Wake-up method of formation pressure testing while drilling |
| 12/05/2012 | CN102808611A Comprehensive testing device of drilling stratum pressure tester |
| 12/05/2012 | CN102808608A Drilling-logging integrated comprehensive instrument system |
| 12/05/2012 | CN102808589A Motor-driven underground tractor for coiled tubing |
| 12/05/2012 | CN101553076B Neutron generator and Well logging tool comprising the neutron generator |
| 12/05/2012 | CN101201003B Methods and systems for sampling heavy oil reservoirs |
| 12/04/2012 | US8323921 Method and apparatus for environmental monitoring and bioprospecting |
| 12/04/2012 | US8322416 Focused sampling of formation fluids |
| 12/04/2012 | US8322415 Instrumented swellable element |
| 12/04/2012 | CA2532181C Apparatus and method for measuring concentrations of scale-forming ions |
| 11/29/2012 | WO2012162441A1 Borehole independent neutron porosity measurement |
| 11/29/2012 | WO2012161918A2 A regulation-compliant holding device for storing or transporting a non-compliant container |
| 11/29/2012 | WO2012161588A1 Method and device for filling a submerged sample bottle |
| 11/29/2012 | WO2012160398A1 Rotary soil sampling probe assembly |
| 11/29/2012 | DE102011050669A1 Method for selecting batch of e.g. magmatic rock for manufacturing building raw materials utilized for railroad line construction, involves assigning characteristic of natural stone to corresponding category to select batch of stone |
| 11/29/2012 | CA2836928A1 Borehole independent neutron porosity measurement |
| 11/28/2012 | CN202560213U Sampling device |
| 11/28/2012 | CN202560212U Sidewall contact device with direct-current self-locking brushless motor |
| 11/28/2012 | CN202560203U Associated natural gas brine well produced fluid concentration monitoring device |
| 11/28/2012 | CN202560202U 缆芯切换装置 The core switching device |
| 11/28/2012 | CN202560201U Experimental apparatus for filtering solid impurities in crude oil |
| 11/28/2012 | CN202560197U Thick oil steam soak simulation test device |
| 11/28/2012 | CN102803653A Downhole sensor systems and methods thereof |
| 11/28/2012 | CN102797458A Three-dimensional simulation device for edge/bottom water reservoir |
| 11/28/2012 | CN102797453A Well logging densimeter |
| 11/28/2012 | CN102797442A Deep fluid diversion method |
| 11/28/2012 | CN101892834B Pressure balance type tank in formation pressure tester-during-drilling tool |
| 11/28/2012 | CN101798917B Multifunctional dynamic pollution evaluation device of coalbed drilling fluid |
| 11/28/2012 | CN101788544B On-line tester for plugging capability of water-base mud |
| 11/28/2012 | CN101737041B Combined sensor applied to measurement of water ratio in oil well |
| 11/28/2012 | CN101641489B Drilling tool with fluid cleaner |
| 11/28/2012 | CN101592029B Method for well logging with induced polarization spectrum |
| 11/27/2012 | US8316964 Drill bit transducer device |
| 11/27/2012 | US8316934 Isotopic identification of production by individual formations in commingled gas wells |
| 11/26/2012 | CA2776188A1 Reservoir evaluation system |
| 11/24/2012 | CA2777273A1 Method and apparatus for measuring borehole mud resistivity |
| 11/23/2012 | CA2776187A1 Quaternary photodetector for downhole optical sensing |
| 11/22/2012 | WO2012103461A3 Optimization of sample cleanup during formation testing |
| 11/22/2012 | WO2012061845A8 An apparatus, system and method for estimating a property of a downhole fluid |
| 11/22/2012 | WO2011138700A3 Methods for characterizing asphaltene instability in reservoir fluids |
| 11/22/2012 | US20120292024 Formation testing and sampling apparatus and methods |
| 11/22/2012 | CA2835980A1 Altering a composition at a location accessed through an elongate conduit |
| 11/21/2012 | EP2524109A1 Measuring gas content of unconventional reservoir rocks |
| 11/21/2012 | EP2524102A1 Well tools operable via thermal expansion resulting from reactive materials |