| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 02/17/2004 | US6691802 Internal power source for downhole detection system |
| 02/17/2004 | US6691780 Tracking of particulate flowback in subterranean wells |
| 02/17/2004 | US6691779 Wellbore antennae system and method |
| 02/17/2004 | CA2278792C Method and apparatus for enhancing production from a wellbore hole |
| 02/17/2004 | CA2234495C Adjustable gauge downhole drilling assembly |
| 02/13/2004 | CA2437395A1 Apparatuses and methods for deploying logging tools and signalling in boreholes |
| 02/12/2004 | WO2004013997A1 Adaptive acoustic transmitter controller apparatus and method |
| 02/12/2004 | WO2004013459A1 Inflation tool with real-time temperature and pressure probes |
| 02/12/2004 | WO2004013451A1 Stabilizer for a rod, particularly a string of drilling rods |
| 02/12/2004 | WO2004013415A1 Method and device for soil analysis |
| 02/12/2004 | WO2003090311A3 Extended range emf antenna |
| 02/12/2004 | WO2003010534A3 Method for quantitative monitoring of a gas injected into a reservoir in particular in a natural environment |
| 02/12/2004 | US20040027917 Borehole logging apparatus for deep well drilling with a device for transmitting borehole measurement data |
| 02/12/2004 | US20040027252 Coupling signals to flowlines |
| 02/12/2004 | US20040026124 One cone bit with interchangeable cutting structures, a box-end connection, and integral sensory devices |
| 02/12/2004 | US20040026086 Actuator module to operate a downhole tool |
| 02/12/2004 | US20040025583 Method and apparatus for determining downhole pressures during a drilling operation |
| 02/11/2004 | EP1388615A1 Method and apparatus for soil examination |
| 02/11/2004 | EP1387959A2 Fluid controlled pumping system and method |
| 02/11/2004 | CN2603199Y Multi-function Martin Decker sensor |
| 02/11/2004 | CN1474031A Protector for preventing rod member from falling and one-way locking method |
| 02/10/2004 | US6688389 Apparatus and method for locating joints in coiled tubing operations |
| 02/10/2004 | US6688388 Method for accessing subterranean deposits from the surface |
| 02/10/2004 | US6688176 Single tube densitometer |
| 02/10/2004 | CA2350504C Method and system for accessing subterranean deposits from the surface |
| 02/07/2004 | CA2436069A1 Borehole logging apparatus for deep well drilling with a device for transmitting borehole measurement data |
| 02/05/2004 | WO2004011775A2 Measurement- while-drilling assembly using real-time toolface oriented measurements |
| 02/05/2004 | WO2004011761A2 Rupture disc with non-circular varying depth score line |
| 02/05/2004 | WO2003069120A3 Dual channel downhole telemetry |
| 02/05/2004 | US20040020691 Continuous wellbore drilling system with stationary sensor measurements |
| 02/05/2004 | US20040020653 Method and apparatus to monitor, control and log subsea oil and gas wells |
| 02/05/2004 | US20040020648 Well reference apparatus and method |
| 02/05/2004 | US20040020647 Apparatus and method for determining the dip of an underground formation in a cased or uncased borehole |
| 02/05/2004 | US20040020646 Variable intensity memory gravel pack imaging apparatus and method |
| 02/05/2004 | US20040020644 Inflation tool with real-time temperature and pressure probes |
| 02/05/2004 | US20040020643 Universal downhole tool control apparatus and methods |
| 02/05/2004 | US20040020642 In situ recovery from a hydrocarbon containing formation using conductor-in-conduit heat sources with an electrically conductive material in the overburden |
| 02/05/2004 | US20040020636 Downhole valve |
| 02/05/2004 | US20040020635 Apparatus and method for locating joints in coiled tubing operations |
| 02/05/2004 | US20040020063 Method and device for the measurement of the drift of a borchole |
| 02/04/2004 | EP1386054A2 Flexible joint for well logging instruments |
| 02/04/2004 | CN2602161Y Safety device for down-hole apparatus tap |
| 02/03/2004 | US6686589 Fluid density monitor |
| 02/03/2004 | US6684953 Wireless packer/anchor setting or activation |
| 02/03/2004 | US6684952 Inductively coupled method and apparatus of communicating with wellbore equipment |
| 02/03/2004 | US6684951 Sand screen with integrated sensors |
| 02/03/2004 | US6684950 System for pressure testing tubing |
| 02/03/2004 | US6684949 Drilling mechanics load cell sensor |
| 01/29/2004 | WO2004010163A1 Marking of pipe joints |
| 01/29/2004 | WO2004010090A1 Impeller device for data acquisition in a flow |
| 01/29/2004 | WO2004010088A1 Impeller for data acquisition in a flow |
| 01/29/2004 | US20040017730 System and method for acquiring seismic and micro-seismic data in deviated wellbores |
| 01/29/2004 | US20040016542 Method and apparatus for conveying a tool in a borehole |
| 01/29/2004 | US20040016295 Subterranean well pressure and temperature measurement |
| 01/29/2004 | CA2493775A1 Marking of pipe joints |
| 01/28/2004 | EP1060327B1 Inflow detection apparatus and system for its use |
| 01/28/2004 | CN1136449C Underground communication device with coil coupling without iron core |
| 01/27/2004 | US6683681 Method and apparatus for a downhole refractometer and attenuated reflectance spectrometer |
| 01/27/2004 | US6681633 Spectral power ratio method and system for detecting drill bit failure and signaling surface operator |
| 01/23/2004 | WO2004009957A1 Subterranean well pressure and temperature measurement |
| 01/22/2004 | WO2004007910A1 Subsea and landing string distributed temperature sensor system |
| 01/22/2004 | WO2004007909A2 System and method for obtaining and analyzing well data |
| 01/22/2004 | WO2003050389A3 Apparatus and methods for downhole determination of characteristics of formation fluids |
| 01/22/2004 | US20040012500 Downlink pulser for mud pulse telemetry |
| 01/22/2004 | US20040011950 Parameter sensing apparatus and method for subterranean wells |
| 01/22/2004 | US20040011559 Stabilizer for use in a drill string |
| 01/22/2004 | US20040011558 Drilling device |
| 01/22/2004 | US20040011524 Estimating formation properties in inter-well regions by monitoring saturation and salinity front arrivals |
| 01/22/2004 | CA2731526A1 Subsea and landing string distributed temperature sensor system |
| 01/21/2004 | EP1381755A2 Drawdown apparatus and method for in-situ analysis of formation fluids |
| 01/21/2004 | EP1381750A1 Drilling system with expandable sleeve |
| 01/20/2004 | US6679332 Petroleum well having downhole sensors, communication and power |
| 01/20/2004 | US6679328 Reverse section milling method and apparatus |
| 01/20/2004 | US6679322 Method and system for accessing subterranean deposits from the surface |
| 01/20/2004 | CA2309620C Coiled tubing sensor system for delivery of distributed multiplexed sensors |
| 01/20/2004 | CA2249197C Method and apparatus for monitoring mineral production |
| 01/20/2004 | CA2135961C Method, apparatus and installation for surveying and monitoring a hydrocarbon reservoir penetrated by a well |
| 01/15/2004 | WO2004005968A2 Pulsed deployment of a cable through a conduit located in a well |
| 01/15/2004 | WO2004005662A2 Method for upward growth of a hydraulic fracture along a well bore sandpacked annulus |
| 01/15/2004 | WO2004005661A2 System and mehtod for automating or metering fluid recovered at a well |
| 01/15/2004 | WO2003021278B1 Inertially-stabilized magnetometer measuring apparatus for use in a borehole rotary environment |
| 01/15/2004 | WO2003002840A3 Improved stabilizer for use in a drill string |
| 01/15/2004 | US20040010374 Processing and interpretation of real-time data from downhole and surface sensors |
| 01/15/2004 | US20040008030 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 01/15/2004 | US20040007872 Tool module interconnect for use in directional drilling |
| 01/15/2004 | US20040007387 Smart-ultrasonic/sonic driller/corer |
| 01/15/2004 | US20040007357 Drilling mechanics load cell sensor |
| 01/15/2004 | CA2490968A1 Pulsed deployment of a cable through a conduit located in a well |
| 01/14/2004 | EP1380823A2 Drilling mechanics load cell sensor |
| 01/14/2004 | EP1379757A2 Oscillating shear valve for mud pulse telemetry |
| 01/14/2004 | CN2599238Y Under well parameter measuring radio transmission device |
| 01/13/2004 | US6677861 Monitoring system |
| 01/13/2004 | US6675914 Pressure reading tool |
| 01/13/2004 | US6675895 Well cementing |
| 01/13/2004 | US6675892 Well testing using multiple pressure measurements |
| 01/12/2004 | CA2434489A1 Drilling mechanics load cell sensor |
| 01/08/2004 | WO2004003506A2 In-situ detection and analysis of coal bed methane formations |
| 01/08/2004 | WO2004003342A2 Fiber optic amplifier for oilfield applications |
| 01/08/2004 | WO2003089751A3 Method for improving drilling depth measurements |
| 01/08/2004 | US20040006430 Seismic monitoring and control method |