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Class Information
Number: 340/854.3
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.)
Description: Subject matter including a particularly described feature of the structure or composition of a material or medium through which the information or control signals are transmitted.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7609169 |
Electromagnetic telemetry apparatus and methods for minimizing cyclical or synchronous noise |
Oct. 27, 2009 |
| RE40944 |
Adjustable shear valve mud pulser and controls therefor |
Oct. 27, 2009 |
| 7564741 |
Intelligent efficient servo-actuator for a downhole pulser |
Jul. 21, 2009 |
| 7530737 |
System and method for measuring temperature using electromagnetic transmissions within a well |
May. 12, 2009 |
| 7518950 |
Method and apparatus for downlink communication |
Apr. 14, 2009 |
| 7489591 |
Drilling fluid pressure pulse detection using a differential transducer |
Feb. 10, 2009 |
| 7482945 |
Apparatus for interfacing with a transmission path |
Jan. 27, 2009 |
| 7460438 |
Downhole data communication |
Dec. 2, 2008 |
| 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 |
| 7429934 |
Mud pulse landing assembly for use in directional drilling |
Sep. 30, 2008 |
| 7424176 |
Optical fiber termination apparatus and methods of use, and optical fiber termination process |
Sep. 9, 2008 |
| 7400262 |
Apparatus and methods for self-powered communication and sensor network |
Jul. 15, 2008 |
| 7397388 |
Borehold telemetry system |
Jul. 8, 2008 |
| 7385503 |
Self powered son device network |
Jun. 10, 2008 |
| 7378985 |
Communication system for down hole use |
May. 27, 2008 |
| 7348894 |
Method and apparatus for using a data telemetry system over multi-conductor wirelines |
Mar. 25, 2008 |
| 7348893 |
Borehole communication and measurement system |
Mar. 25, 2008 |
| 7345594 |
Noise attenuation apparatus for borehole telemetry |
Mar. 18, 2008 |
| 7339494 |
Acoustic telemetry transceiver |
Mar. 4, 2008 |
| 7330397 |
Electromagnetic anti-jam telemetry tool |
Feb. 12, 2008 |
| 7327634 |
Rotary pulser for transmitting information to the surface from a drill string down hole in a well |
Feb. 5, 2008 |
| 7325605 |
Flexible piezoelectric for downhole sensing, actuation and health monitoring |
Feb. 5, 2008 |
| 7313052 |
System and methods of communicating over noisy communication channels |
Dec. 25, 2007 |
| 7298286 |
Apparatus for interfacing with a transmission path |
Nov. 20, 2007 |
| 7295491 |
High impact communication and control system |
Nov. 13, 2007 |
| 7280432 |
Oscillating shear valve for mud pulse telemetry |
Oct. 9, 2007 |
| 7268697 |
Laterally translatable data transmission apparatus |
Sep. 11, 2007 |
| 7256706 |
Hybrid well communication system |
Aug. 14, 2007 |
| 7249636 |
System and method for communicating along a wellbore |
Jul. 31, 2007 |
| 7250873 |
Downlink pulser for mud pulse telemetry |
Jul. 31, 2007 |
| 7248177 |
Down hole transmission system |
Jul. 24, 2007 |
| 7234519 |
Flexible piezoelectric for downhole sensing, actuation and health monitoring |
Jun. 26, 2007 |
| 7230543 |
Downhole clock synchronization apparatus and methods for use in a borehole drilling environment |
Jun. 12, 2007 |
| 7193527 |
Swivel assembly |
Mar. 20, 2007 |
| 7180826 |
Measurement while drilling bi-directional pulser operating in a near laminar annular flow channel |
Feb. 20, 2007 |
| 7158049 |
Wireless communication circuit |
Jan. 2, 2007 |
| 7158446 |
Directional acoustic telemetry receiver |
Jan. 2, 2007 |
| 7145473 |
Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
Dec. 5, 2006 |
| 7132958 |
Downhole telemetry system using multiple uplink modes as data channels using discrete multi-tone modulation |
Nov. 7, 2006 |
| 7126492 |
Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
Oct. 24, 2006 |
| 7123161 |
Method and apparatus enhanced acoustic mud pulse telemetry |
Oct. 17, 2006 |
| 7114561 |
Wireless communication using well casing |
Oct. 3, 2006 |
| 7116237 |
Pressure measuring device |
Oct. 3, 2006 |
| 7098802 |
Signal connection for a downhole tool string |
Aug. 29, 2006 |
| 7084782 |
Drill string telemetry system and method |
Aug. 1, 2006 |
| 7071837 |
Data transmission in pipeline systems |
Jul. 4, 2006 |
| 7053788 |
Transducer for downhole drilling components |
May. 30, 2006 |
| 7026951 |
Data telemetry system for multi-conductor wirelines |
Apr. 11, 2006 |
| 7002445 |
Loaded transducer for downhole drilling components |
Feb. 21, 2006 |
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