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Class Information
Number: 340/854.6
Name: Communications: electrical > Wellbore telemetering or control (e.g., subsurface tool guidance, data transfer, etc.) > Using a specific transmission medium (e.g., conductive fluid, annular spacing, etc.) > Electromagnetic energy (e.g., radio frequency, etc.)
Description: Subject matter wherein the signal is transmitted in the form of a presence or variation in an electromagnetic field.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620394 |
Reusing frequencies of a fixed and/or mobile communications system |
Nov. 17, 2009 |
| 7609169 |
Electromagnetic telemetry apparatus and methods for minimizing cyclical or synchronous noise |
Oct. 27, 2009 |
| 7605715 |
Electromagnetic wellbore telemetry system for tubular strings |
Oct. 20, 2009 |
| 7605716 |
Telemetry system with an insulating connector |
Oct. 20, 2009 |
| 7598886 |
System and method for wirelessly communicating with a downhole drill string |
Oct. 6, 2009 |
| 7573397 |
System and method for downhole telemetry |
Aug. 11, 2009 |
| 7570920 |
AM-FM hybrid signal communicated to RFID tags |
Aug. 4, 2009 |
| 7561040 |
Wireless probe system and method for a fueling environment |
Jul. 14, 2009 |
| 7539279 |
Logarithmic spectrum transmitter waveform for controlled-source electromagnetic surveying |
May. 26, 2009 |
| 7518528 |
Electric field communication for short range data transmission in a borehole |
Apr. 14, 2009 |
| 7518527 |
Extended range emf antenna |
Apr. 14, 2009 |
| 7492279 |
System for managing borehole information |
Feb. 17, 2009 |
| 7477160 |
Wireless communications associated with a wellbore |
Jan. 13, 2009 |
| 7477162 |
Wireless electromagnetic telemetry system and method for bottomhole assembly |
Jan. 13, 2009 |
| 7450053 |
Logging device with down-hole transceiver for operation in extreme temperatures |
Nov. 11, 2008 |
| 7436320 |
Sensor system and method of communicating data between a downhole device on a remote location |
Oct. 14, 2008 |
| 7424176 |
Optical fiber termination apparatus and methods of use, and optical fiber termination process |
Sep. 9, 2008 |
| 7411517 |
Apparatus and method for providing communication between a probe and a sensor |
Aug. 12, 2008 |
| 7358848 |
Wireless remote sensor |
Apr. 15, 2008 |
| 7347271 |
Wireless communications associated with a wellbore |
Mar. 25, 2008 |
| 7330397 |
Electromagnetic anti-jam telemetry tool |
Feb. 12, 2008 |
| 7315256 |
Magnetic signalling in pipelines |
Jan. 1, 2008 |
| 7301474 |
Wireless communication system and method |
Nov. 27, 2007 |
| 7268696 |
Directional signal and noise sensors for borehole electromagnetic telemetry system |
Sep. 11, 2007 |
| 7256706 |
Hybrid well communication system |
Aug. 14, 2007 |
| 7253745 |
Corrosion-resistant downhole transmission system |
Aug. 7, 2007 |
| 7219748 |
Downhole signal source |
May. 22, 2007 |
| 7212132 |
Downhole signal source |
May. 1, 2007 |
| 7187297 |
Methods for sealing openings in tubulars |
Mar. 6, 2007 |
| 7173542 |
Data relay for casing mounted sensors, actuators and generators |
Feb. 6, 2007 |
| 7154412 |
High-power well logging method and apparatus |
Dec. 26, 2006 |
| 7154411 |
Reservoir management system and method |
Dec. 26, 2006 |
| 7151466 |
Data-fusion receiver |
Dec. 19, 2006 |
| 7151465 |
Method and apparatus for transmitting information between a salt-cavern and the surface of the ground |
Dec. 19, 2006 |
| 7149472 |
Through-the-earth radio |
Dec. 12, 2006 |
| 7119711 |
Communicating with an underground object |
Oct. 10, 2006 |
| 7113097 |
Underwater device with transmitter |
Sep. 26, 2006 |
| 7102532 |
Subsea communication |
Sep. 5, 2006 |
| 7098802 |
Signal connection for a downhole tool string |
Aug. 29, 2006 |
| 7088260 |
High speed data communication protocol for use with EM data telemetry antennae |
Aug. 8, 2006 |
| 7075454 |
Power generation using batteries with reconfigurable discharge |
Jul. 11, 2006 |
| 7064677 |
Method of monitoring service operations of a service vehicle at a well site |
Jun. 20, 2006 |
| 7043023 |
Software defined radio and radio system |
May. 9, 2006 |
| 7043204 |
Through-the-earth radio |
May. 9, 2006 |
| 6995684 |
Retrievable subsurface nuclear logging system |
Feb. 7, 2006 |
| 6995677 |
Apparatus and methods for monitoring pipelines |
Feb. 7, 2006 |
| 6989764 |
Apparatus and method for downhole well equipment and process management, identification, and actuation |
Jan. 24, 2006 |
| 6975243 |
Downhole tubular with openings for signal passage |
Dec. 13, 2005 |
| 6972678 |
Wireless-based system and method for hull-based sensing |
Dec. 6, 2005 |
| 6967589 |
Gas/oil well monitoring system |
Nov. 22, 2005 |
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