| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 03/17/2005 | WO2004034089A3 Borehole conductivity profiler |
| 03/17/2005 | US20050060096 Method for improving drilling depth measurements |
| 03/17/2005 | US20050056774 Method of logging a borehole |
| 03/17/2005 | US20050056465 Automatic downlink system |
| 03/17/2005 | US20050056461 Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis |
| 03/17/2005 | US20050056419 Apparatus for wellbore communication |
| 03/17/2005 | US20050056418 System and method for sensing data in a well during fracturing |
| 03/17/2005 | US20050056415 Pressure sensor insert for a downhole tool |
| 03/17/2005 | CA2743617A1 Automatic downlink system |
| 03/16/2005 | EP1514996A1 Drilling system with remote directional control |
| 03/16/2005 | EP1514009A1 Mwd formation tester |
| 03/16/2005 | EP1514008A1 Acoustic doppler downhole fluid flow measurement |
| 03/16/2005 | EP1404941B1 Well drilling bit |
| 03/16/2005 | EP1226336A4 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 03/16/2005 | CN2685835Y Ultrasound wave flowmeter for water injection well |
| 03/16/2005 | CN2685569Y Ultrasound wave calliper logging instrument |
| 03/16/2005 | CN2685568Y Thermometric device for logger |
| 03/16/2005 | CN2685567Y Rigid connecting head harness |
| 03/15/2005 | US6868040 Wireless power and communications cross-bar switch |
| 03/15/2005 | US6867706 Frequency regulation of an oscillator for use in MWD transmission |
| 03/15/2005 | US6866306 Low-loss inductive couplers for use in wired pipe strings |
| 03/15/2005 | US6865934 System and method for sensing leakage across a packer |
| 03/15/2005 | CA2236011C Method for verifying positive inflation of an inflatable element |
| 03/15/2005 | CA2190898C Method and apparatus for installing electronic equipment below soft earth surface layer |
| 03/10/2005 | WO2005022133A1 An apparatus and a method of visulazing target objects in a fluid-carrying pipe |
| 03/10/2005 | WO2004106942A3 Method for measuring fluid chemistry in drilling and production operations |
| 03/10/2005 | WO2004097160A3 System and method using a continuously variable transmission to control one or more system components |
| 03/10/2005 | US20050055293 Methods and systems for offering and servicing financial instruments |
| 03/10/2005 | US20050055163 Borehole equipment position detection system |
| 03/10/2005 | US20050053473 Well jet device for testing and studying formations and the operating method thereof |
| 03/10/2005 | US20050052949 Use of pattern recognition in a measurement of formation transit time for seismic checkshots |
| 03/10/2005 | CA2536749A1 An apparatus and a method of visualizing target objects in a fluid-carrying pipe |
| 03/09/2005 | EP1511917A1 Method and apparatus for a high resolution downhole spectrometer |
| 03/09/2005 | EP1511912A2 Downhole tool deployment safety system and methods |
| 03/09/2005 | CN2683849Y Multifunctional annular space passing output liquid cross section logging instrument for pumping well |
| 03/09/2005 | CN2683832Y Down-hole monitoring salvaging machine |
| 03/09/2005 | CN1592816A Thermoacoustic electric power generator |
| 03/09/2005 | CN1591042A Method and apparatus for testing fluid speed and characters using NMR |
| 03/08/2005 | US6864801 Reservoir monitoring through windowed casing joint |
| 03/08/2005 | US6864593 Device for producing of electric energy and of signal transmitting pressure pulses |
| 03/08/2005 | US6863137 Well system |
| 03/08/2005 | US6863136 Smart-ultrasonic/sonic driller/corer |
| 03/08/2005 | US6863129 Method and apparatus for providing plural flow paths at a lateral junction |
| 03/08/2005 | US6863127 System and method for making an opening in a subsurface tubular for reservoir monitoring |
| 03/03/2005 | WO2004073240A3 Downhole wireless telemetry system using discrete multi-tone modulation |
| 03/03/2005 | WO2004053284A3 Isolated electrical connection in a drill string |
| 03/03/2005 | US20050049791 Deep resistivity transient method for MWD applications using asymptotic filtering |
| 03/03/2005 | US20050046591 Method and apparatus for performing diagnostics on a downhole communication system |
| 03/03/2005 | US20050046589 Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
| 03/03/2005 | US20050046588 Electromagnetic MWD telemetry system incorporating a current sensing transformer |
| 03/03/2005 | US20050046587 Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
| 03/03/2005 | US20050045344 Downhole tool and method |
| 03/03/2005 | US20050045331 Secure activation of a downhole device |
| 03/03/2005 | US20050045329 Intelligent well system and method |
| 03/02/2005 | EP1509679A1 Parameter sensing apparatus and method for subterranean wells |
| 03/02/2005 | EP1509678A1 Liquid level measurement |
| 03/02/2005 | EP1509677A2 Apparatus and method for minimizing wear and wear related measurement error in a logging-while-drilling tool |
| 03/02/2005 | EP1177366B1 Apparatus and method for transmitting information to and communicating with a downhole device |
| 03/02/2005 | EP1040250B1 System and method for positioning a tool in a wellbore |
| 03/02/2005 | CN2682204Y Wireless network intelligent power indicator |
| 03/02/2005 | CN2682203Y Automatic pumping depth metering apparatus for oil testing operation |
| 03/02/2005 | CN2682202Y Two-wheel rolling centralizer for oil pipe |
| 03/01/2005 | US6862530 System and method for visualizing multi-scale data alongside a 3D trajectory |
| 03/01/2005 | US6860327 Pressure containing assembly used to detect the location of anomalies within a blowout preventer (BOP) stack |
| 03/01/2005 | US6860325 Downhole flow meter |
| 03/01/2005 | US6860029 Length adjustable tool for aligning boring bar |
| 03/01/2005 | CA2241545C Sonic data logging system |
| 02/27/2005 | CA2740063A1 Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
| 02/24/2005 | WO2005017593A1 Optical fiber cable |
| 02/24/2005 | WO2005017503A1 Method and apparatus for a downhole refractometer and attenuated reflectance spectrometer |
| 02/24/2005 | WO2005017315A1 Measurement-while-drilling assembly using real-time toolface oriented measurements |
| 02/24/2005 | WO2005017314A1 Side entry leak protection for sondes |
| 02/24/2005 | WO2005017308A1 Drilling system and method |
| 02/24/2005 | WO2005017301A2 Electroactive fluid controlled mud pulser |
| 02/24/2005 | WO2004066000A3 System and method for deploying an optical fiber in a well |
| 02/24/2005 | US20050041526 Real-time velocity and pore-pressure prediction ahead of drill bit |
| 02/24/2005 | US20050039927 Intelligent well system and method |
| 02/24/2005 | US20050039544 Flow meter using an expanded tube section and sensitive differential pressure measurement |
| 02/23/2005 | EP1507954A1 A downhole tool for use in a wellbore |
| 02/23/2005 | EP1303681A4 Well management system |
| 02/23/2005 | CN2680854Y Down-hole storage type pipe-bar parameter detector |
| 02/23/2005 | CN2680853Y Down-hole dynamic monitoring electronic short piece |
| 02/23/2005 | CN2680852Y Wireless intelligent monitoring system at well mouth |
| 02/23/2005 | CN1586061A Power source regulator for wireline cable system |
| 02/22/2005 | US6857474 Methods, apparatus and products useful in the operation of a sucker rod pump during the production of hydrocarbons |
| 02/22/2005 | CA2462987C Vibration-dampening drill collar |
| 02/17/2005 | WO2005014977A1 Apparatus and method for measuring concentrations of scale-forming ions |
| 02/17/2005 | WO2005014976A1 Method for installing a double ended distributed sensing fiber optical assembly within a guide conduit |
| 02/17/2005 | WO2005014975A1 Multimode acoustic imaging in cased wells |
| 02/17/2005 | WO2003035801A3 Producing hydrocarbons and non-hydrocarbon containing materials from a hydrocarbon containing formation |
| 02/17/2005 | US20050036403 Methods of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications |
| 02/17/2005 | US20050034917 Apparatus and method for acoustic position logging ahead-of-the-bit |
| 02/17/2005 | US20050034894 Core orientation |
| 02/17/2005 | US20050034873 Placing fiber optic sensor line |
| 02/17/2005 | US20050034863 Apparatus and method of detecting interfaces between well fluids |
| 02/17/2005 | US20050034857 Optical fiber conveyance, telemetry, and/or actuation |
| 02/17/2005 | US20050034530 Acoustic doppler downhole fluid flow measurement |
| 02/17/2005 | US20050034454 Method and circuit for forming an atm cell |
| 02/16/2005 | CN2679362Y Continuous gas injecting unit for measuring capillary pressure of oil field |
| 02/16/2005 | CN1580488A Retrievable subsurface nuclear logging system |