| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 01/03/2007 | CN1888388A Initial aligning method adapted for whole-optical fiber digital slope level |
| 01/03/2007 | CN1888387A Down-well pipe finder machinery frame |
| 01/03/2007 | CN1888386A Strapdown inertial combine measurement controller adapted to whole-optical fiber digital slope level |
| 01/03/2007 | CN1888385A Contra rotating positioning mechanism for eliminating dynamic regulating gyroinclinometer inertia device constant value error |
| 01/03/2007 | CN1888384A Well drilling slope level azimuth angle error compensating method based on neural network |
| 01/03/2007 | CN1888383A Deepwell depth and cable pulling winch metering device |
| 01/03/2007 | CN1888380A Combined injection device |
| 01/03/2007 | CN1293713C Method and apparatus for determining position in pipe |
| 01/03/2007 | CN1293283C Apparatus and method for placing data testing device into under-ground rock stratum |
| 01/02/2007 | US7158887 Fluids chain-of-custody |
| 01/02/2007 | US7158886 Automatic control system and method for bottom hole pressure in the underbalance drilling |
| 01/02/2007 | US7158049 Wireless communication circuit |
| 01/02/2007 | US7156176 Installation and use of removable heaters in a hydrocarbon containing formation |
| 01/02/2007 | US7155967 Formation testing apparatus and method |
| 01/02/2007 | CA2415909C Borehole inspection videocamera |
| 01/02/2007 | CA2406801C Treatment well tiltmeter system |
| 01/02/2007 | CA2399079C Non-intrusive pressure measurement device for subsea well casing annuli |
| 01/02/2007 | CA2305148C Composite spoolable tube with sensor |
| 01/02/2007 | CA2170183C Improvements in or relating to steerable rotary drilling systems |
| 01/02/2007 | CA2161930C Composite rod storing and handling apparatus |
| 12/28/2006 | WO2006138651A2 System and method for acquiring information during underground drilling operations |
| 12/28/2006 | US20060293857 Methods and devices for analyzing and controlling the propagation of waves in a borehole generated by water hammer |
| 12/28/2006 | US20060290528 Bidirectional telemetry apparatus and methods for wellbore operations |
| 12/28/2006 | US20060289172 Depth control in coiled tubing operations |
| 12/28/2006 | US20060289156 Lateral control system |
| 12/28/2006 | US20060289155 An Ultrasonic Estimating Method and Apparatus for a Cased Well |
| 12/28/2006 | US20060288769 High temperature near infrared for measurements and telemetry in well boreholes |
| 12/27/2006 | EP1736634A1 An ultrasonic estimating method and apparatus for a cased well |
| 12/27/2006 | EP1735642A2 Multiple distributed sensors along a drillstring |
| 12/27/2006 | EP1735592A1 Measuring borehole survey tool orientation using microgyros |
| 12/27/2006 | EP1735522A2 Multiple distributed pressure measurements |
| 12/27/2006 | EP1735521A1 A component used in the formation, construction, repair and production phase of a well bore and a method for identifying same |
| 12/27/2006 | EP1664478B1 Drilling system and method |
| 12/27/2006 | CN2851572Y Downhole gravity-propelled flexible logging-cable horizontal-well logging sender |
| 12/27/2006 | CN2851571Y Capillary pressure-transmission barrel |
| 12/27/2006 | CN2851570Y Fully-automatic oil well metering vehicle |
| 12/27/2006 | CN2851569Y Single well metering device in thick oil tank |
| 12/27/2006 | CN2851568Y Intelligent alarming grouter for petroleum and natural gas drilling |
| 12/27/2006 | CN2851567Y Portable well-logging and perforating ground system |
| 12/27/2006 | CN1884794A Layered steam distribution system for steam flooding and steam distribution method thereof |
| 12/27/2006 | CN1292147C Method for characterising parameters of wells, well bottom zone and device for carrryingout said method |
| 12/26/2006 | US7154411 Reservoir management system and method |
| 12/26/2006 | US7154273 Flux orientation locating in a drilling system |
| 12/26/2006 | US7152700 Dual wall drill string assembly |
| 12/26/2006 | US7152680 Slickline power control interface |
| 12/26/2006 | US7152467 Parallel seismic depth testing using a cone penetrometer |
| 12/26/2006 | US7152466 Methods and apparatus for rapidly measuring pressure in earth formations |
| 12/21/2006 | WO2006122174A3 Bidirectional telemetry apparatus and methods for wellbore operations |
| 12/21/2006 | WO2005084376A3 Rotating systems associated with drill pipe |
| 12/21/2006 | WO2005084246A3 Safemode operating system for a drilling or service rig |
| 12/21/2006 | US20060285436 Intelligent system for use in subterranean drilling applications |
| 12/21/2006 | US20060284066 Pulsed-Neutron Formation Density |
| 12/21/2006 | US20060283633 Method and apparatus for conducting earth borehole operations using coiled casing |
| 12/21/2006 | US20060283632 System and method for acquiring information during underground drilling operations |
| 12/20/2006 | EP1734223A2 Fiber optic sensor and sensing system for hydrocarbon flow |
| 12/20/2006 | EP1733222A1 Apparatus and methods for acoustically determining fluid properties while sampling |
| 12/20/2006 | CN2849168Y 司钻显示装置 Driller display device |
| 12/20/2006 | CN2849167Y Under well hydraulic tool drillstem pressure testing device |
| 12/20/2006 | CN2849166Y Bidirection hole drilling device for wall body |
| 12/20/2006 | CN2849165Y Electronic clinometer |
| 12/20/2006 | CN2849164Y Near drill during drilling measuring device of well deviation angle |
| 12/20/2006 | CN2849132Y Double layer fixing tool |
| 12/20/2006 | CN2849128Y Filtering, metering, temperature measuring device of well washing liquid |
| 12/20/2006 | CN1882853A Multi-pole transmitter source |
| 12/20/2006 | CN1882783A Well jet device for logging horizontal wells and the operating method thereof |
| 12/20/2006 | CN1882761A Method and apparatus for downhole fluid analysis using molecularly imprinted polymers |
| 12/20/2006 | CN1880721A Method and conduit for transmitting signals |
| 12/19/2006 | US7151465 Method and apparatus for transmitting information between a salt-cavern and the surface of the ground |
| 12/19/2006 | US7151377 Permanent apparatus for monitoring a well by injecting current through the casing into the formations |
| 12/19/2006 | US7151376 Bore location system |
| 12/19/2006 | US7151254 Logging tool with response invariant to changes in borehole pressure |
| 12/19/2006 | US7150331 System and method for tracking and communicating with a boring tool |
| 12/19/2006 | US7150329 Auto-extending/retracting electrically isolated conductors in a segmented drill string |
| 12/19/2006 | US7150317 Use of electromagnetic acoustic transducers in downhole cement evaluation |
| 12/19/2006 | US7150188 Non-invasive measurement of fluid-pressure diffusivity using electro-osmosis |
| 12/19/2006 | CA2484481C Light source stabilisation |
| 12/19/2006 | CA2447179C Method for asymptotic dipping correction |
| 12/19/2006 | CA2427118C Streamlining data transfer to/from logging while drilling tools |
| 12/19/2006 | CA2397168C Virtual steering of induction tool for determination of formation dip angle |
| 12/19/2006 | CA2376854C Opto-electrical actuation system and method |
| 12/15/2006 | CA2550205A1 Enhanced armor wires for electrical cables |
| 12/14/2006 | WO2006133243A1 Method and apparatus for collecting drill bit performance data |
| 12/14/2006 | WO2006088743B1 Radial expansion of a wellbore casing against a formation |
| 12/14/2006 | US20060278386 Method and apparatus for controlling the speed of a pump in a well |
| 12/14/2006 | DE102006019815A1 Bohrloch-Abbildungswerkzeug und ein Verfahren zum Abbilden eines Bohrlochs Figure downhole tool and a method for imaging a wellbore |
| 12/13/2006 | EP1731709A2 Method and system for performing operations and for improving production in wells |
| 12/13/2006 | EP1730663A2 Providing a local response to a local condition in an oil well |
| 12/13/2006 | EP1356189B1 Method to evaluate the hydrocarbon potential of sedimentary basins from fluid inclusions |
| 12/13/2006 | CN2846754Y Intelligent test seal measuring and regulating flow instrument |
| 12/13/2006 | CN2846753Y Novel liquid level guage for well drilling liquid |
| 12/13/2006 | CN2846752Y Portable inclonometer tray |
| 12/13/2006 | CN2846751Y Liquid and gas meter for oil well |
| 12/13/2006 | CN2846748Y Separate metering device |
| 12/13/2006 | CN2846718Y High temperature high pressure double pipe pole wellhead device |
| 12/13/2006 | CN2846708Y Intelligent joint for oil well electric pump separate production |
| 12/13/2006 | CN1289788C Method for monitoring fluid flow in underground region |
| 12/12/2006 | US7149146 Determination of the impedance of a material behind a casing combining two sets of ultrasonic measurements |
| 12/12/2006 | US7147064 Laser spectroscopy/chromatography drill bit and methods |
| 12/12/2006 | US7147060 Method, system and apparatus for orienting casing and liners |
| 12/12/2006 | US7147059 Use of downhole high pressure gas in a gas-lift well and associated methods |