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Class Information
Number: 340/854.7
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.) > Optical link (e.g., waveguide, etc.)
Description: Subject matter wherein the signal is transmitted over a communications link which includes an element which transmits electromagnetic energy having a frequency in or near the visible range.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7575053 |
Low temperature monitoring system for subsurface barriers |
Aug. 18, 2009 |
| 7450053 |
Logging device with down-hole transceiver for operation in extreme temperatures |
Nov. 11, 2008 |
| 7444446 |
Optical DVI cable, optical signal transmission equipment and optical signal transmission system which have the cable, and method of transmitting optical signal using the cable |
Oct. 28, 2008 |
| 7424176 |
Optical fiber termination apparatus and methods of use, and optical fiber termination process |
Sep. 9, 2008 |
| 7420475 |
Well site communication system |
Sep. 2, 2008 |
| 7248177 |
Down hole transmission system |
Jul. 24, 2007 |
| 7212132 |
Downhole signal source |
May. 1, 2007 |
| 7193525 |
Methods and apparatus for downhole inter-tool communication |
Mar. 20, 2007 |
| 7158048 |
Identically programmed intelligent electrodes for use in geoelectrical surveys |
Jan. 2, 2007 |
| 7158789 |
Communication network in particular for telephony |
Jan. 2, 2007 |
| 7154412 |
High-power well logging method and apparatus |
Dec. 26, 2006 |
| 7154413 |
Fused and sealed connector system for permanent reservoir monitoring and production control |
Dec. 26, 2006 |
| 7123162 |
Subsea communication system and technique |
Oct. 17, 2006 |
| 7104331 |
Optical position sensing for well control tools |
Sep. 12, 2006 |
| 7098802 |
Signal connection for a downhole tool string |
Aug. 29, 2006 |
| 6963728 |
Low power, high speed data communications in vehicles |
Nov. 8, 2005 |
| 6728165 |
Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors |
Apr. 27, 2004 |
| 6724319 |
Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors |
Apr. 20, 2004 |
| 6696974 |
Cable device for detecting and monitoring rock and soil displacement |
Feb. 24, 2004 |
| 6271766 |
Distributed selectable latent fiber optic sensors |
Aug. 7, 2001 |
| 6229453 |
Method to transmit downhole video up standard wireline cable using digital data compression techniques |
May. 8, 2001 |
| 6041872 |
Disposable telemetry cable deployment system |
Mar. 28, 2000 |
| 5903221 |
Method and apparatus for determining the moisture level in a buried splice |
May. 11, 1999 |
| 5495547 |
Combination fiber-optic/electrical conductor well logging cable |
Feb. 27, 1996 |
| 5493626 |
Reduced diameter down-hole instrument electrical/optical fiber cable |
Feb. 20, 1996 |
| 5485745 |
Modular downhole inspection system for coiled tubing |
Jan. 23, 1996 |
| 5363095 |
Downhole telemetry system |
Nov. 8, 1994 |
| 5363094 |
Stationary system for the active and/or passive monitoring of an underground deposit |
Nov. 8, 1994 |
| 5355128 |
Video logging system having an optical communications link |
Oct. 11, 1994 |
| 5275038 |
Downhole reeled tubing inspection system with fiberoptic cable |
Jan. 4, 1994 |
| 4928088 |
Apparatus for extracting recorded information from a logging tool |
May. 22, 1990 |
| 4893354 |
System and method for self-compensating fiber-optic data transmission at temperatures up to 200 degrees C. |
Jan. 9, 1990 |
| 4891640 |
High temperature and pressure fiber optic feedthrough for borehole usage |
Jan. 2, 1990 |
| 4849753 |
Electro optic high temperature well bore modulator |
Jul. 18, 1989 |
| 4794534 |
Method of drilling a well utilizing predictive simulation with real time data |
Dec. 27, 1988 |
| 4547774 |
Optical communication system for drill hole logging |
Oct. 15, 1985 |
| 4389645 |
Well logging fiber optic communication system |
Jun. 21, 1983 |
| 4337653 |
Blowout preventer control and recorder system |
Jul. 6, 1982 |
| 4189705 |
Well logging system |
Feb. 19, 1980 |
| 4162400 |
Fiber optic well logging means and method |
Jul. 24, 1979 |
| 4115753 |
Fiber optic acoustic array |
Sep. 19, 1978 |
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