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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:

Class Number Class Name Patents
340/854.8 Near field coupling (e.g., inductive, capacitive, etc.) 127
340/854.7 Optical link (e.g., waveguide, etc.) 60

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8692685 Wellsite communication system and method Apr. 8, 2014
8670710 Filtering a single wire protocol (SWP) current signal to be provided to a near field communications (NFC) device Mar. 11, 2014
8648733 Electromagnetic telemetry assembly with protected antenna Feb. 11, 2014
8639186 Telemetry conveyed by pipe utilizing specks Jan. 28, 2014
8581741 Communication system for a hydrocarbon extraction plant Nov. 12, 2013
8565439 Method for detecting the scrambling of a radiocommunication network, and corresponding storage means and circuit Oct. 22, 2013
8552884 Power and signal distribution system Oct. 8, 2013
8547245 System and method for downhole telemetry Oct. 1, 2013
8519865 Downhole coils Aug. 27, 2013
8469084 Wireless transfer of power and data between a mother wellbore and a lateral wellbore Jun. 25, 2013
8416098 Acoustic communication apparatus for use with downhole tools Apr. 9, 2013
8406697 Wireless communications system for tool Mar. 26, 2013
8400326 Instrumentation of appraisal well for telemetry Mar. 19, 2013
8390471 Telemetry apparatus and method for monitoring a borehole Mar. 5, 2013
8378840 Surface communication device and method for downhole tool Feb. 19, 2013
8378841 Tracking of oil drilling pipes and other objects Feb. 19, 2013
8374834 Statistical method for analyzing the performance of oilfield equipment Feb. 12, 2013
8354939 Wellbore casing mounted device for determination of fracture geometry and method for using same Jan. 15, 2013
8347958 Systems and methods for distributed interferometric acoustic monitoring Jan. 8, 2013
8339276 Monoconductor data-power transmission Dec. 25, 2012
8330617 Wireless power and telemetry transmission between connections of well completions Dec. 11, 2012
8319657 System and method for wireless communication in a producing well system Nov. 27, 2012
8315563 Wireless reader tags (WRTs) with sensor components in asset monitoring and tracking systems Nov. 20, 2012
8305228 Method and apparatus for locating a plug within the well Nov. 6, 2012
8305229 System for wireless communication along a drill string Nov. 6, 2012
8284073 Downlink while pumps are off Oct. 9, 2012
8264370 Power and signal distribution system Sep. 11, 2012
8258976 Electric field communication for short range data transmission in a borehole Sep. 4, 2012
8253584 Electric dipole transmission system Aug. 28, 2012
8237585 Wireless communication system and method Aug. 7, 2012
8232892 Method and system for operating a well service rig Jul. 31, 2012
8225867 Systems and methods for distributed interferometric acoustic monitoring Jul. 24, 2012
8193939 Wireless IC device Jun. 5, 2012
8179279 Method and device for producing hydrocarbons using wireless communication May. 15, 2012
8154420 System and method for downhole telemetry Apr. 10, 2012
8120509 MWD data transmission Feb. 21, 2012
8106791 System and method for receiving and decoding electromagnetic transmissions within a well Jan. 31, 2012
8011425 Transmitting sensor response data and power through a mud motor Sep. 6, 2011
8001016 Pharmaceutical product packaging Aug. 16, 2011
7991555 Electromagnetic directional measurements for non-parallel bed formations Aug. 2, 2011
7987027 Systems for processing machine health information Jul. 26, 2011
7982632 Sensor system and method of communicating data between a downhole device on a remote location Jul. 19, 2011
7980327 Sub-surface imaging using antenna array for determing optimal oil drilling site Jul. 19, 2011
7958949 Method and apparatus for three dimensional geosteering Jun. 14, 2011
7946341 Systems and methods for distributed interferometric acoustic monitoring May. 24, 2011
7932834 Data relay system for instrument and controller attached to a drill string Apr. 26, 2011
7894302 Drilling system comprising a plurality of borehole telemetry systems Feb. 22, 2011
7880640 Wellbore communication system Feb. 1, 2011
7859426 Electromagnetic wellbore telemetry system for tubular strings Dec. 28, 2010
7839523 System and method for resolving a hardware identifier to a network address of networked device Nov. 23, 2010

1 2 3 4 5

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