| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 06/13/2006 | US7061932 Code-division multiple-access (CDMA) wireline telemetry system |
| 06/13/2006 | US7061830 Transducers coated with anechoic material for use in down hole communications |
| 06/13/2006 | US7061244 Flux orientation locating in a drilling system |
| 06/13/2006 | US7059881 Spoolable composite coiled tubing connector |
| 06/13/2006 | US7059428 Monitoring a reservoir in casing drilling operations using a modified tubular |
| 06/13/2006 | US7059426 Acoustic flow pulsing apparatus and method for drill string |
| 06/13/2006 | US7059405 Methods of treating subterranean formations using low-molecular-weight fluids |
| 06/13/2006 | US7059404 Variable intensity memory gravel pack imaging apparatus and method |
| 06/13/2006 | CA2398154C Bed boundary detection and invasion profiling with uncompensated electromagnetic wave resistivity sensors |
| 06/13/2006 | CA2233227C Method and apparatus for selective horizontal well re-entry using retrievable diverter oriented by logging means |
| 06/08/2006 | WO2006060708A1 Switchable power allocation in a downhole operation |
| 06/08/2006 | WO2006060673A1 Rechargeable energy storage device in a downhole operation |
| 06/08/2006 | WO2006059197A1 Sonde attachment means |
| 06/08/2006 | WO2006059133A1 Measurement of corrosivity |
| 06/08/2006 | WO2006059079A1 Downhole communication |
| 06/08/2006 | WO2005089458A3 Use of electromagnetic acoustic transducers in downhole cement evaluation |
| 06/08/2006 | US20060120859 Impeller device for data acquisition in a flow |
| 06/08/2006 | US20060119363 Method and device for determining the position of an interface in relation to a bore hole |
| 06/08/2006 | US20060118334 Oscillating shear valve for mud pulse telemetry |
| 06/08/2006 | US20060117842 Single probe downhole sampling apparatus and method |
| 06/08/2006 | DE102005057049A1 System, Vorrichtung und Verfahren zum Ausführen von Vermessungen eines Bohrlochs System, apparatus and method for performing measurements of a borehole |
| 06/08/2006 | CA2590503A1 Downhole communication |
| 06/07/2006 | EP1666698A1 Downhole signal source location |
| 06/07/2006 | EP1664487A1 Method for installing a double ended distributed sensing fiber optical assembly within a guide conduit |
| 06/07/2006 | EP1664478A1 Drilling system and method |
| 06/07/2006 | EP1581721B1 Communication system for down hole use |
| 06/07/2006 | EP1328701B1 System, method and apparatus for deploying a data resource within a threaded pipe coupling |
| 06/07/2006 | EP1255912B1 Non-intrusive pressure measurement device for subsea well casing annuli |
| 06/07/2006 | CN2786275Y Anti-theft four-way test valve with cipher for water injection well |
| 06/07/2006 | CN1782739A Dynamic generation of vector graphics and animation of bottom hole assembly |
| 06/07/2006 | CN1782320A Method and system for precise drilling guidance of twin wells |
| 06/07/2006 | CN1258637C Tracer release method for monitoring fluid flow in well |
| 06/07/2006 | CN1258636C Downhole well corrosion monitoring apparatus and method |
| 06/06/2006 | US7057524 Pressure pulse generator for MWD |
| 06/06/2006 | US7055604 Use of distributed temperature sensors during wellbore treatments |
| 06/06/2006 | US7055601 Method and system for estimating the position of a movable device in a borehole |
| 06/06/2006 | US7055600 In situ thermal recovery from a relatively permeable formation with controlled production rate |
| 06/06/2006 | US7055592 Toroidal choke inductor for wireless communication and control |
| 06/06/2006 | CA2442087C Method and apparatus for determining the presence and orientation of a fracture in an earth formation |
| 06/06/2006 | CA2396822C Bi-directional grip mechanism for a wide range of bore sizes |
| 06/06/2006 | CA2315981C Borehole logging apparatus for deep well drillings with a device for transmitting borehole measurement data |
| 06/06/2006 | CA2313282C Method and apparatus for determining logging tool displacements |
| 06/01/2006 | WO2006058006A2 Identification of the channel frequency response using chirps and stepped frequencies |
| 06/01/2006 | WO2006056474A1 Methods and apparatus for communicating across casing |
| 06/01/2006 | WO2006004740A3 Baker hughes incorporated |
| 06/01/2006 | WO2005107429A3 Optical communications with a bottom hole assembly |
| 06/01/2006 | WO2005094505A3 An apparatus and methodology of hydrostatically testing of oil field tubing and casing |
| 06/01/2006 | WO2005091911A3 Multiple distributed pressure measurements |
| 06/01/2006 | US20060116823 Method and system for cause-effect time lapse analysis |
| 06/01/2006 | US20060115221 Braided thermocouple cable bundle |
| 06/01/2006 | US20060115204 Distributed Temperature Sensing System with Remote Reference Coil |
| 06/01/2006 | US20060113112 Method and system for precise drilling guidance of twin wells |
| 06/01/2006 | US20060113111 System, apparatus, and method of conducting measurements of a borehole |
| 06/01/2006 | DE102004057642A1 Bohrloch-Streckenmesssonde Borehole distance measuring probe |
| 05/31/2006 | EP1662673A1 Method and apparatus for communicating across casing |
| 05/31/2006 | EP1662225A1 Probe for measuring stretch in a borehole |
| 05/31/2006 | EP1570156B1 Drilling a borehole |
| 05/31/2006 | EP1549822A4 Remote intervention logic valving method and apparatus |
| 05/31/2006 | EP1070196B1 Apparatus and method for enhancing remote sensor performance |
| 05/31/2006 | CN2784584Y Liquid level measurer for oil well |
| 05/31/2006 | CN1781272A Downhole telemetry system using discrete multi-tone modulation in a wireless communication medium |
| 05/30/2006 | US7053788 Transducer for downhole drilling components |
| 05/30/2006 | US7053611 Method and apparatus for using pulsed field gradient NMR measurements to determine fluid properties in a fluid sampling well logging tool |
| 05/30/2006 | US7051808 Seismic monitoring of in situ conversion in a hydrocarbon containing formation |
| 05/30/2006 | US7051807 In situ thermal recovery from a relatively permeable formation with quality control |
| 05/30/2006 | US7051587 Traction apparatus |
| 05/30/2006 | CA2527331A1 Lifetime pulsed neutron/chlorine combination logging tool |
| 05/30/2006 | CA2527271A1 Method for precise drilling guidance of twin wells |
| 05/30/2006 | CA2381324C Continuous wellbore drilling system with stationary sensor measurements |
| 05/30/2006 | CA2231947C Method of determining fluid inflow rates |
| 05/26/2006 | WO2006055953A1 Modular drillling apparatus with power and/or data transmission |
| 05/26/2006 | WO2006055568A1 Method and apparatus for cooling flasked instrument assemblies |
| 05/26/2006 | WO2006054074A1 Perforation logging tool and method |
| 05/26/2006 | WO2005124103A3 Apparatus and methods for positioning in a borehole |
| 05/25/2006 | US20060109141 Noise attenuation apparatus for borehole telemetry |
| 05/25/2006 | US20060108126 Gas-pressurized lubricator |
| 05/25/2006 | US20060108113 Shale shakers and screens with identification apparatuses |
| 05/25/2006 | US20060108112 Probe for measuring the electromagnetic properties of a down-hole material |
| 05/25/2006 | US20060107736 Measuring sonde for a hydrocarbon well |
| 05/24/2006 | EP1274992B1 Apparatus and method for downhole well equipment and process management, identification, and actuation |
| 05/24/2006 | EP1259702B1 Power generation using batteries with reconfigurable discharge |
| 05/24/2006 | EP1259701B1 Controlled downhole chemical injection |
| 05/24/2006 | EP1062617A4 Method for correcting well log data for effects of changes in instrument velocity (cable yo-yo) |
| 05/24/2006 | DE19806709B4 Verfahren zum Vermessen des Bohrungsverlaufes von Tieflochbohrungen, insbesondere von Sacklochbohrungen, und dazu geeignete Vorrichtung A method for measuring the bore path of deep hole drilling, particularly blind holes, and to appropriate device |
| 05/24/2006 | CN2782925Y Ground gathering conveying system for petroleum production |
| 05/24/2006 | CN2782913Y Enviroment measuring well head |
| 05/24/2006 | CN1777737A Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation. |
| 05/24/2006 | CN1777736A Wellstring assembly |
| 05/24/2006 | CN1776196A Method and system for accessing subterranean deposits from the surface |
| 05/24/2006 | CN1776193A Butt-joint drilling rod capable of transmitting electric signal |
| 05/24/2006 | CA2527297A1 A probe for measuring the electromagnetic properties of a down-hole material |
| 05/23/2006 | US7049821 Determination of borehole geometry inside cased wells with crosswell electromagnetics |
| 05/23/2006 | US7049820 Boring technique using locate point measurements for boring tool depth prediction |
| 05/23/2006 | US7049506 Conductor system |
| 05/23/2006 | US7047653 Depth correction |
| 05/23/2006 | CA2402221C In-well monitoring and flow control system |
| 05/23/2006 | CA2395753C Integrated transmitter surveying while boring (swb) entrenching powering device for the continuation of a guided bore hole |
| 05/23/2006 | CA2387616C Apparatus for transferring electrical energy between rotating and non-rotating members of downhole tools |
| 05/23/2006 | CA2367179C Formation resistivity measurement method that eliminates effects of lateral tool motion |
| 05/23/2006 | CA2244829C Well cable monitor system |