| 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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| 08/08/2006 | US7089167 Evaluation of reservoir and hydraulic fracture properties in multilayer commingled reservoirs using commingled reservoir production data and production logging information |
| 08/08/2006 | US7086464 Well testing system |
| 08/08/2006 | US7086463 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 08/08/2006 | CA2147027C Method and apparatus for acquiring and processing subsurface samples of connate fluid |
| 08/03/2006 | US20060173627 Enhanced measurement of azimuthal dependence of subterranean parameters with filters and/or discretely sampled data |
| 08/03/2006 | US20060169494 Apparatus and methods for sponge coring |
| 08/03/2006 | CA2535137A1 Apparatus for hydraulically energizing down hole mechanical systems |
| 08/02/2006 | EP1686238A1 System and methods of deriving differential fluid properties of downhole fluids |
| 08/02/2006 | EP1686237A1 System and methods of deriving fluid properties of downhole fluids and uncertainty thereof |
| 08/02/2006 | EP1254352B1 Downhole densitometer |
| 08/02/2006 | CN2802085Y Acoustic system of digital acoustic log equipment |
| 08/02/2006 | CN1811413A Cn1811413 |
| 08/01/2006 | US7085696 Iterative drilling simulation process for enhanced economic decision making |
| 08/01/2006 | US7084392 Method and apparatus for a downhole fluorescence spectrometer |
| 08/01/2006 | US7083009 Pressure controlled fluid sampling apparatus and method |
| 08/01/2006 | US7083006 Non-rotating sensor assembly for measurement-while-drilling applications |
| 08/01/2006 | US7082994 Radially adjustable downhole devices and methods for same |
| 08/01/2006 | US7082993 Means and method for assessing the geometry of a subterranean fracture during or after a hydraulic fracturing treatment |
| 08/01/2006 | CA2399766C Reduced contamination sampling |
| 08/01/2006 | CA2399527C Method for determining formation characteristics in a perforated wellbore |
| 07/27/2006 | WO2006076758A1 Instrumentation probe for in situ measurement and testing of seabed |
| 07/27/2006 | US20060163467 Apparatus and method for analysing downhole water chemistry |
| 07/26/2006 | EP1684096A2 Integrated reservoir optimization |
| 07/26/2006 | CN1807902A Eccentering arm hydraulic loop device for through-casing resistivity logging instrument for petroleum well |
| 07/26/2006 | CN1807834A Acoustic variable-density well logging instrument |
| 07/25/2006 | US7080552 Method and apparatus for MWD formation testing |
| 07/19/2006 | CN1804372A Portable infrared logging instrument for drilling well |
| 07/19/2006 | CN1804370A Cable controlled separate layer production and test technology for oil well |
| 07/19/2006 | CN1265076C Sensor arranging device and method for measuring property parameters of underground stratum |
| 07/18/2006 | CA2365310C Wellbore primary barrier and related systems |
| 07/18/2006 | CA2284456C Earth formation pressure measurement with penetrating probe |
| 07/13/2006 | WO2005065277A3 Contamination estimation using fluid analysis models |
| 07/13/2006 | US20060155474 System and methods of deriving fluid properties of downhole fluids and uncertainty thereof |
| 07/13/2006 | US20060150726 Permanently eccentered formation tester |
| 07/12/2006 | EP1679424A2 Integrated reservoir optimization |
| 07/12/2006 | CN1800578A Apparatus and method for formation evaluation |
| 07/11/2006 | US7075062 Apparatus and methods for downhole determination of characteristics of formation fluids |
| 07/11/2006 | US7073590 Dual energized hydroseal |
| 07/11/2006 | US7073580 Inflation tool with real-time temperature and pressure probes |
| 07/11/2006 | US7073579 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 07/11/2006 | CA2532478A1 System and methods of deriving differential fluid properties of downhole fluids |
| 07/11/2006 | CA2532436A1 System and methods of deriving fluid properties of downhole fluids and uncertainty thereof |
| 07/11/2006 | CA2392056C Method and apparatus using antennas to measure electrical anisotropy |
| 07/11/2006 | CA2200246C Method for estimating the hydraulic conductivity of a borehole sidewall fracture |
| 07/06/2006 | WO2006070235A1 Temperature compensated strain measurement |
| 07/06/2006 | US20060149518 Method for evaluating and improving drilling operations |
| 07/06/2006 | US20060144136 Determination of amount of proppant added to a fracture fluid using a coriolis flow meter |
| 07/06/2006 | DE102005061761A1 Vorrichtung und Verfahren zur Formationsbewertung Apparatus and method for formation evaluation |
| 07/06/2006 | CA2592472A1 Temperature compensated strain measurement |
| 07/05/2006 | EP1676976A1 Drawdown apparatus and method for in-situ analysis of formation fluids |
| 07/05/2006 | CN2793326Y Safety sampling valve |
| 07/05/2006 | CN2793325Y 油井冬季取样器 Well Winter Sampler |
| 07/05/2006 | CN2793324Y Gamma drilling measuring instrument for declination and location of well |
| 07/05/2006 | CN2793322Y Checker of pulse-code simulating instrument |
| 07/05/2006 | CN2793157Y Soil column sampler |
| 07/05/2006 | CN1262849C Underground nuclear magnetic resonance logger with programmable pulse serial generator |
| 07/04/2006 | US7069776 Method for measuring particle concentration during injection pumping operations |
| 06/29/2006 | US20060142982 Computer system and method for modeling fluid depletion |
| 06/29/2006 | US20060139646 Method and apparatus for a downhole spectrometer based on tunable optical filters |
| 06/29/2006 | US20060137873 Apparatus and method for formation evaluation |
| 06/28/2006 | EP1389263B1 A method of controlling the direction of propagation of injection fractures in permeable formations |
| 06/28/2006 | CN2792060Y Petroleum system emergency long-distance monitoring commanding system |
| 06/28/2006 | CN2791633Y Super-high-pressure fluid portable sampling tube |
| 06/28/2006 | CN1793607A Compensating neutron well logging instrument |
| 06/27/2006 | US7066281 Formation fluid sampling and hydraulic testing tool and packer assembly therefor |
| 06/27/2006 | US7066019 Cavity stability prediction method for wellbores |
| 06/27/2006 | CA2397171C Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties |
| 06/23/2006 | CA2658870A1 Performing in-situ, downhole analysis of properties of an unknown formation fluid based on in-situ analysis of like properties of a known fluid |
| 06/22/2006 | DE102005060009A1 Kennzeichnungssystem und-verfahren Labeling system and procedures |
| 06/21/2006 | EP1514009A4 Mwd formation tester |
| 06/21/2006 | CN2789411Y Gap type antitheft sampling valve |
| 06/21/2006 | CN1789656A Marking system and method |
| 06/20/2006 | US7062959 Method and apparatus for determining downhole pressures during a drilling operation |
| 06/20/2006 | US7062958 Receptacle for sampling downhole |
| 06/20/2006 | CA2529539A1 Method to measure and locate a fluid communication pathway in a material behind a casing |
| 06/20/2006 | CA2529173A1 Determination of the impedance of a material behind a casing combining two sets of ultrasonic measurements |
| 06/20/2006 | CA2214445C Method for modelling the crystallization of paraffins in petroleum fluids |
| 06/20/2006 | CA2187229C Method and device for identification of oil characteristics of sediments |
| 06/15/2006 | WO2006063094A1 In situ optical computation fluid analysis system and method |
| 06/15/2006 | US20060129365 Method and system for estimating the amount of supercharging in a formation |
| 06/15/2006 | US20060129321 Method of determining the per strata reserve quality of an oil well |
| 06/15/2006 | US20060124299 Rupture disc monitoring system |
| 06/14/2006 | EP1668561A2 Characterizing connectivity in reservoir models using paths of least resistance |
| 06/14/2006 | EP1554464B1 Apparatus and method for cleaning and sealing a well borehole portion for formation evaluation |
| 06/14/2006 | EP1394356B1 Method for characterising parameters of wells, well bottom zone and formation, and device for carrying out said method |
| 06/14/2006 | CN1786414A Well measuring meter with digit centering |
| 06/13/2006 | US7059881 Spoolable composite coiled tubing connector |
| 06/13/2006 | US7059179 Multi-probe pressure transient analysis for determination of horizontal permeability, anisotropy and skin in an earth formation |
| 06/13/2006 | US7059174 Method and probe for measuring hydraulic conductivity of soil |
| 06/08/2006 | WO2006058377A1 Core barrel capacity gauge |
| 06/08/2006 | US20060117841 Novel well logging method for the determination of catalytic activity |
| 06/08/2006 | DE102005057049A1 System, Vorrichtung und Verfahren zum Ausführen von Vermessungen eines Bohrlochs System, apparatus and method for performing measurements of a borehole |
| 06/08/2006 | CA2529170A1 Pump controlled formation fluid sampling probe with concentric sample tubes |
| 06/07/2006 | CN2786605Y Sample collecting equipment of oil substance |
| 06/07/2006 | CN1784536A Continuous data recorder for a downhole sample tank |
| 06/07/2006 | CN1784535A Method and apparatus for downhole micro-sampler |
| 06/07/2006 | CN1782740A Method for evaluating rock stratum structure by using nuclear magnetic resonance and other well-logging data |
| 06/06/2006 | US7055626 Core bit having features for controlling flow split |
| 06/06/2006 | US7055600 In situ thermal recovery from a relatively permeable formation with controlled production rate |
| 05/30/2006 | US7054751 Methods and apparatus for estimating physical parameters of reservoirs using pressure transient fracture injection/falloff test analysis |