| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 08/22/2006 | US7093680 Subsurface signal transmitting apparatus |
| 08/22/2006 | US7093674 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 08/22/2006 | US7093673 Drilling device |
| 08/22/2006 | US7093672 Systems for deep resistivity while drilling for proactive geosteering |
| 08/22/2006 | CA2366002C Three-dimensional steering tool for controlled downhole extended-reach directional drilling |
| 08/22/2006 | CA2217411C Method for controlling the speed of a pump based on measurement of the fluid depth in a well |
| 08/22/2006 | CA2208965C Method for logging behind casing |
| 08/22/2006 | CA2153142C Slick line casing and tubing joint locator apparatus and associated methods |
| 08/17/2006 | WO2006086417A1 Incremental depth measurement for real-time calculation of dip and azimuth |
| 08/17/2006 | US20060180754 Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation |
| 08/17/2006 | US20060180349 Time and depth correction of MWD and wireline measurements using correlation of surface and downhole measurements |
| 08/17/2006 | US20060180306 Method for improved vertical sweep of oil reservervoirs |
| 08/17/2006 | US20060180305 Integral Flush Gauge Cable Apparatus and Method |
| 08/17/2006 | US20060180303 Independent measuring and processing probe for preliminary studies on a well |
| 08/17/2006 | US20060179931 Electrode in a measurement tube of a magnetic-inductive flowmeter |
| 08/17/2006 | CA2597753A1 Incremental depth measurement for real-time calculation of dip and azimuth |
| 08/16/2006 | EP1690363A2 Method and system for improving computer network security |
| 08/16/2006 | EP1689975A2 Method and system for transmitting signals through a metal tubular |
| 08/16/2006 | EP1689831A2 Superior extraction performance using sulfuric acid |
| 08/16/2006 | CN2806762Y Double-probe eccentering arm |
| 08/16/2006 | CN2806761Y Portable monitoring device for oil and gas well construction parameter |
| 08/16/2006 | CN2806749Y Downhole wheel-type self-adapting pipe crawler for horizontal well |
| 08/16/2006 | CN1818335A Trial four-linking technology |
| 08/16/2006 | CN1818334A Synchronizing flow seal-verification testing method and tester thereof |
| 08/16/2006 | CN1818328A Cracking four-linking technology |
| 08/16/2006 | CN1270054C Method for microscopic quantitatively processing dynamic color image for oil drive |
| 08/16/2006 | CN1270053C Oil well output pipeline fluid medium technological parameter collecting device |
| 08/16/2006 | CN1270052C Method for obtaining survey of leakage and structum integrity by finite downhole pressure test |
| 08/15/2006 | US7091719 Method for determining properties of formation fluids |
| 08/15/2006 | US7091460 In situ processing of hydrocarbon-bearing formations with variable frequency automated capacitive radio frequency dielectric heating |
| 08/15/2006 | US7090038 Bedrock drilling and excavating apparatus |
| 08/15/2006 | US7090011 Method for operating a well jet device during repair and insulating operations and device for carrying out said method |
| 08/15/2006 | US7090010 Gauge carrier sub apparatus |
| 08/15/2006 | CA2427903C Determining wettability of an oil reservoir using borehole nmr measurements |
| 08/15/2006 | CA2411566C Modified tubular equipped with a tilted or transverse magnetic dipole for downhole logging |
| 08/15/2006 | CA2406857C Method and apparatus for determining reservoir characteristics |
| 08/15/2006 | CA2268444C Apparatus and method for drilling boreholes |
| 08/10/2006 | WO2006083764A1 Telemetry system with an insulating connector |
| 08/10/2006 | WO2006083738A1 Apparatus and method for mechanical caliper measurements during drilling and logging-while-drilling operations |
| 08/10/2006 | WO2006082364A1 Reservoir monitoring system |
| 08/10/2006 | WO2005050777A3 Receiver electronics proximate antenna |
| 08/10/2006 | US20060175090 Drilling system and method |
| 08/10/2006 | US20060175056 Instrumented Packer |
| 08/10/2006 | CA2596345A1 Apparatus and method for mechanical caliper measurements during drilling and logging-while-drilling operations |
| 08/09/2006 | EP1688585A2 Apparatus and method for protecting devices, especially fibre optic devices, in hostile environments |
| 08/09/2006 | EP1688584A1 Autonomous measurement and treatment sonde for borehole pre-production investigation |
| 08/09/2006 | EP1687898A2 Signalling method and apparatus |
| 08/09/2006 | EP1687837A2 High temperature electronic devices |
| 08/09/2006 | EP0975992B1 Pressure impulse telemetry apparatus and method |
| 08/09/2006 | CN2804372Y Coring tools able to detect clogging |
| 08/09/2006 | CN1268939C Sensor for detecting magnetic-field in underground casing area |
| 08/09/2006 | CN1268937C Gamma detector assembly and apparatus set |
| 08/08/2006 | US7086484 Determination of thermal properties of a formation |
| 08/08/2006 | US7086465 In situ production of a blending agent from a hydrocarbon containing formation |
| 08/08/2006 | US7086463 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 08/08/2006 | US7086294 Retrievable downhole flow meter |
| 08/08/2006 | CA2418708C Rotary control of rotary steerables using servo-accelerometers |
| 08/08/2006 | CA2409238C Method for estimating a position in a wellbore |
| 08/08/2006 | CA2145006C Method and apparatus for beam steering and bessel shading of conformal array |
| 08/03/2006 | WO2006079847A1 A method for facilitating a wellbore operation |
| 08/03/2006 | WO2006079703A1 Tubular drill rod |
| 08/03/2006 | WO2006065559A9 Heating and cooling electrical components in a downhole operation |
| 08/03/2006 | WO2005065364A3 Instrumented internal blowout preventer valve for measuring drill string drilling parameters |
| 08/03/2006 | US20060173627 Enhanced measurement of azimuthal dependence of subterranean parameters with filters and/or discretely sampled data |
| 08/03/2006 | US20060173626 Method for locating casing joints using measurement while drilling tool |
| 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 | CN2802456Y Undeground electromagnetic flow sensor |
| 08/02/2006 | CN2802086Y Well cementation acoustic imaging log equipment |
| 08/02/2006 | CN2802085Y Acoustic system of digital acoustic log equipment |
| 08/02/2006 | CN2802084Y Electrode system of strong focus double-lateral log equipment |
| 08/02/2006 | CN2802083Y Modulation output four-parmeter combined logging instrument |
| 08/02/2006 | CN2802066Y One-arm sidewall contact device of petroleum prospecting instrument |
| 08/02/2006 | CN2802063Y Guide centering guide |
| 08/02/2006 | CN2802062Y Spring type Y-shaped joint for well |
| 08/02/2006 | CN1811127A Control system suitable for continuous fiber gyrolevel for oil well |
| 08/02/2006 | CN1267622C Logging system for use in wellbore and stratum logging method |
| 08/01/2006 | US7084782 Drill string telemetry system and method |
| 08/01/2006 | US7084636 Boring tool tracking/guiding system and method with unconstrained target location geometry |
| 08/01/2006 | US7083008 Apparatus and method for pressure-compensated telemetry and power generation in a borehole |
| 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 | US7082812 Method and device for evaluating physical parameters of an underground reservoir from rock cuttings taken therefrom |
| 08/01/2006 | CA2461402C Wellhead and control stack pressure test plug tool |
| 08/01/2006 | CA2399527C Method for determining formation characteristics in a perforated wellbore |
| 08/01/2006 | CA2328513C A method of monitoring the diameter of columns made by injection |
| 08/01/2006 | CA2209259C Method for the determination of inflow of oil and/or gas into a well |
| 08/01/2006 | CA2204018C 2-stage underreamer |
| 08/01/2006 | CA2156223C Mwd surface signal detector having enhanced acoustic detection means |
| 07/27/2006 | WO2006078945A1 Subsurface imagery for temperature measurement and fluid flow for oil recovery using electromagnetic impedance tomography (emit) |
| 07/27/2006 | WO2006078216A1 A method and a system for determining the position of a drill bit |
| 07/27/2006 | WO2006050103A9 Directional transducers for use in down hole communications |
| 07/27/2006 | US20060164256 Downhole data communication |
| 07/27/2006 | US20060163467 Apparatus and method for analysing downhole water chemistry |
| 07/27/2006 | US20060162962 Wellbore operations monitoring & control systems & methods |
| 07/27/2006 | US20060162961 Sonic drill |
| 07/27/2006 | CA2595289A1 Subsurface imagery for temperature measurement and fluid flow for oil recovery using electromagnetic impedance tomography (emit) |
| 07/26/2006 | EP1682747A1 Well control and monitoring system using high temperature electronics |
| 07/26/2006 | CN2799860Y Rotary drilling rig bit depth detector |