| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 07/05/2005 | US6913083 Method and apparatus to monitor, control and log subsea oil and gas wells |
| 07/05/2005 | US6913079 Method and system for monitoring smart structures utilizing distributed optical sensors |
| 07/05/2005 | US6912904 Single tube densitometer |
| 07/05/2005 | US6912898 Use of cesium as a tracer in coring operations |
| 06/30/2005 | WO2005059307A1 Apparatus and methods for measurement of solids in a wellbore |
| 06/30/2005 | WO2005059298A1 A telescopic data coupler |
| 06/30/2005 | WO2002071178A3 Improved bandwidth wireline data transmission system and method |
| 06/30/2005 | US20050140368 [method and apparatus for determining speed and properties of flowing fluids using nmr measurements] |
| 06/30/2005 | US20050140153 Handling tool for radioactive sources of logging while drilling devices |
| 06/30/2005 | US20050139358 Cavity positioning tool and method |
| 06/30/2005 | US20050138830 Depth correction |
| 06/30/2005 | DE102004058272A1 Instrument e.g. medical instrument, locating device, has magnetic dipole that rotates freely around longitudinal axis of drilling head, and stationary magnetic dipole fixed with housing |
| 06/29/2005 | EP1546765A2 Battery conservation for downhole telemetry |
| 06/29/2005 | EP1370746A4 Electromagnetic borehold surveying method |
| 06/29/2005 | CN2706748Y Device for measuring gaspressure by directly drilling and sealing hole in coal seam |
| 06/29/2005 | CN1633544A Depth correction |
| 06/29/2005 | CN1633543A Acoustic position measurement system for well bore formation |
| 06/29/2005 | CN1633542A Sonde housing and method of manufacture |
| 06/29/2005 | CN1632447A Three-flap measuring ring |
| 06/29/2005 | CN1632284A Three flap type guiding chain |
| 06/28/2005 | US6912177 Transmission of data in boreholes |
| 06/28/2005 | US6910534 Apparatus for attaching a sensor to a tubing string |
| 06/28/2005 | US6910388 Flow meter using an expanded tube section and sensitive differential pressure measurement |
| 06/28/2005 | US6910375 Pressure monitoring technique and applications involving wells |
| 06/28/2005 | US6910374 Borehole conductivity profiler |
| 06/28/2005 | CA2441667C Method and system for accessing subterranean deposits from the surface |
| 06/23/2005 | WO2005057242A2 Magnetometers for measurement-while-drilling applications |
| 06/23/2005 | WO2005057240A1 Through tubing real time downhole wireless gauge |
| 06/23/2005 | WO2005056980A1 Controlling a fluid well |
| 06/23/2005 | WO2005056725A2 Superior extraction performance using sulfuric acid |
| 06/23/2005 | US20050133263 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 06/23/2005 | US20050133261 Formation fluid characterization using flowline viscosity and density data an oil-based mud environment |
| 06/23/2005 | US20050133218 Packer cups |
| 06/23/2005 | US20050132794 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit |
| 06/23/2005 | DE102004056545A1 Vorrichtung und Verfahren zum Gewinnen von Informationen aus einer unterirdischen Formation Device and method for obtaining information from a subterranean formation |
| 06/23/2005 | DE102004055995A1 Vorrichtung, Verfahren und Sensor zum Bestimmen einer auf ein Bohrwerkzeug wirkenden Belastung The device, method and sensor for determining a load exerted on a drilling tool |
| 06/23/2005 | CA2547710A1 Through tubing real time downhole wireless gauge |
| 06/23/2005 | CA2547191A1 Superior extraction performance using sulfuric acid |
| 06/22/2005 | CN2705594Y Drilling oblique angle and drilling tool plane angle measuring and recording device while drilling |
| 06/22/2005 | CN2705592Y Automatic controller for hydraulic logging winch |
| 06/22/2005 | CN2705589Y Jetting and cutting united pump |
| 06/22/2005 | CN2705581Y Underwell probing rod hole finder |
| 06/21/2005 | US6909667 Dual channel downhole telemetry |
| 06/21/2005 | US6909666 Method and apparatus for generating acoustic signals for LWD shear velocity measurement |
| 06/21/2005 | US6907944 Apparatus and method for minimizing wear and wear related measurement error in a logging-while-drilling tool |
| 06/21/2005 | CA2203179C Procedure for testing the imperviousness of an underground fluid storage cavity |
| 06/16/2005 | WO2005054973A2 Method and system for improving computer network security |
| 06/16/2005 | WO2005054903A1 Rotational pulsation system and method for communicating |
| 06/16/2005 | WO2005054876A2 Method and system for transmitting signals through a metal tubular |
| 06/16/2005 | US20050126777 Apparatus and methods for measurement of solids in a wellbore |
| 06/15/2005 | EP1541984A2 Apparatus for communicating and measuring pressure |
| 06/15/2005 | EP1540137A2 System and mehtod for automating or metering fluid recovered at a well |
| 06/15/2005 | CN1628207A Well system |
| 06/14/2005 | US6907375 Method and apparatus for dynamic checking and reporting system health |
| 06/14/2005 | US6905241 Determination of virgin formation temperature |
| 06/14/2005 | US6904797 Production profile determination and modification system |
| 06/14/2005 | CA2285759C Adjustable gauge downhole drilling assembly |
| 06/14/2005 | CA2216543C Milling tool, whipstock, milling system and method of forming a window in the wall of a tubular |
| 06/09/2005 | WO2005052315A1 Method and apparatus for downhole fluid analysis using molecularly imprinted polymers |
| 06/09/2005 | US20050125156 Methods and systems for using wavelet analysis in subterranean applications |
| 06/09/2005 | US20050122839 Atomic clock for downhole applications |
| 06/09/2005 | US20050121253 Through tubing real time downhole wireless gauge |
| 06/09/2005 | US20050121188 Controlling a fluid well |
| 06/09/2005 | US20050120813 Apparatuses for interaction with a subterranean formation, and methods of use thereof |
| 06/09/2005 | US20050120576 Device to measure axial displacement in a borehole |
| 06/09/2005 | DE102004053251A1 Kühlvorrichtung für ein Bohrlochwerkzeug und Verfahren zum Kühlen einer in einem Bohrlochwerkzeug angeordneten Komponente A cooling apparatus for a downhole tool and method for cooling a downhole tool disposed in a component |
| 06/08/2005 | EP1370747A4 Length correction system and methods |
| 06/08/2005 | CN1625641A Extend of detonation determination method using seismic energy |
| 06/08/2005 | CN1624292A Branch well reentering tool |
| 06/07/2005 | US6903660 Inductively-coupled system for receiving a run-in tool |
| 06/07/2005 | CA2353176C Apparatus and method for performing downhole measurements |
| 06/07/2005 | CA2316044C Reservoir monitoring through modified casing joint |
| 06/02/2005 | WO2005050777A2 Receiver electronics proximate antenna |
| 06/02/2005 | WO2005050714A2 High temperature electronic devices |
| 06/02/2005 | WO2005050257A2 High temperature imaging device |
| 06/02/2005 | WO2005049957A2 High temperature environment tool system and method |
| 06/02/2005 | US20050117453 Rotational pulsation system and method for communicating |
| 06/02/2005 | US20050115741 Well system |
| 06/02/2005 | US20050115718 Flow control mechanism for a downhole tool |
| 06/02/2005 | US20050115708 Method and system for transmitting signals through a metal tubular |
| 06/02/2005 | US20050115706 Configurable beacon |
| 06/02/2005 | DE102004051615A1 Verkabelte Kommunikationsverbindung für einen Bohrstrang, Telemetriesystem für einen Bohrstrang und Verfahren zum Bohren eines Bohrlochs Wired communication connection for a drill string telemetry system and method for a drill string for drilling a borehole |
| 06/02/2005 | DE102004041544A1 Sichere Aktivierung einer Bohrlochvorrichtung Secure activation of a downhole device |
| 06/01/2005 | EP1535061A2 Method for measuring fluid chemistry in drilling and production operations |
| 06/01/2005 | EP1534928A1 Signal transmission system |
| 06/01/2005 | EP1534920A2 Bulged single-hinged scored rupture disc having a non-circular varying depth score line |
| 06/01/2005 | CN1623029A Bulged single-hinged scored rupture disc having a non-circular varying depth score line |
| 05/31/2005 | US6899178 Method and system for wireless communications for downhole applications |
| 05/31/2005 | US6899174 Floating instrument insert for a tool |
| 05/26/2005 | WO2005048664A2 High temperature circuits |
| 05/26/2005 | WO2005048459A2 Signalling method and apparatus |
| 05/26/2005 | WO2005047647A1 A method and apparatus for a downhole spectrometer based on electronically tunable optical filters |
| 05/26/2005 | WO2005031277A3 Inferential densometer and mass flowmeter |
| 05/26/2005 | US20050110655 RF communication with downhole equipment |
| 05/26/2005 | US20050109539 Apparatus and methods for thrust sensing valves |
| 05/26/2005 | US20050109538 [apparatus and method for acquiring information while drilling] |
| 05/26/2005 | US20050109098 Method and apparatus for downhole fluid analysis using molecularly imprinted polymers |
| 05/26/2005 | US20050109097 Downhole tool sensor system and method |
| 05/26/2005 | US20050109087 Methods and compositions for determining the sources of fluids or particulates from subterranean formations |
| 05/25/2005 | EP1532474A1 Marking of pipe joints |