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Class Information
Number: 367/81
Name: Communications, electrical: acoustic wave systems and devices > Wellbore telemetering
Description: Subject matter wherein information or control signals are transmitted through a passageway in the earth in the form of acoustic waves in a medium in the passageway comprised of material different from the surrounding earth.

Sub-classes under this class:

Class Number Class Name Patents
367/82 Through drill string or casing 211
367/83 Through well fluids 234

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8705318 Data aggregation for drilling operations Apr. 22, 2014
8689904 Detection of gas influx into a wellbore Apr. 8, 2014
8693284 Apparatus for creating pressure pulses in the fluid of a bore hole Apr. 8, 2014
8688382 Detection of downhole vibrations using surface data from drilling rigs Apr. 1, 2014
8654832 Apparatus and method for coding and modulation Feb. 18, 2014
8634273 Acoustic telemetry system using passband equalization Jan. 21, 2014
8629782 System and method for using dual telemetry Jan. 14, 2014
8611187 Miner acoustic communication and location system Dec. 17, 2013
8514657 Generating fluid telemetry Aug. 20, 2013
8437220 Parallel-path acoustic telemetry isolation system and method May. 7, 2013
8393412 System and method for accurate wellbore placement Mar. 12, 2013
8381838 System and apparatus for directing the drilling of a well Feb. 26, 2013
8302685 Mud pulse telemetry data modulation technique Nov. 6, 2012
8258975 Communication system for communication with and remote activation of downhole tools and devices used in association with wells for production of hydrocarbons Sep. 4, 2012
8120509 MWD data transmission Feb. 21, 2012
8090227 Purging of fiber optic conduits in subterranean wells Jan. 3, 2012
8077053 Method and apparatus for sensing a borehole characteristic Dec. 13, 2011
8040249 Acoustic telemetry transceiver Oct. 18, 2011
8009511 Pressure waves decoupling with two transducers Aug. 30, 2011
7994932 Borehole telemetry system Aug. 9, 2011
7835226 Communications and power harvesting system for in-pipe wireless sensor networks Nov. 16, 2010
7814036 Processing well logging data with neural network Oct. 12, 2010
7808859 Oscillating shear valve for mud pulse telemetry Oct. 5, 2010
7805247 System and methods for well data compression Sep. 28, 2010
7777645 Acoustic telemetry transceiver Aug. 17, 2010
7750808 Data retrieval tags Jul. 6, 2010
7706354 Telephone switching system accommodating a plurality of line packages Apr. 27, 2010
7605716 Telemetry system with an insulating connector Oct. 20, 2009
7603238 Analysis of time-series data using singularities Oct. 13, 2009
7580797 Subsurface layer and reservoir parameter measurements Aug. 25, 2009
7561997 Simulation system including a simulator and a case manager adapted for organizing data files for the simulator in a non-conventional tree like structure Jul. 14, 2009
7551516 Vertical seismic profiling method utilizing seismic communication and synchronization Jun. 23, 2009
7535795 Seismic data acquisition system and method for downhole use May. 19, 2009
7518528 Electric field communication for short range data transmission in a borehole Apr. 14, 2009
7489591 Drilling fluid pressure pulse detection using a differential transducer Feb. 10, 2009
7453768 High-speed, downhole, cross well measurement system Nov. 18, 2008
7417920 Reciprocating pulser for mud pulse telemetry Aug. 26, 2008
7400262 Apparatus and methods for self-powered communication and sensor network Jul. 15, 2008
7397388 Borehold telemetry system Jul. 8, 2008
7348893 Borehole communication and measurement system Mar. 25, 2008
7339494 Acoustic telemetry transceiver Mar. 4, 2008
7317989 Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data Jan. 8, 2008
7301472 Big bore transceiver Nov. 27, 2007
7283060 Control apparatus for automated downhole tools Oct. 16, 2007
7280432 Oscillating shear valve for mud pulse telemetry Oct. 9, 2007
7268696 Directional signal and noise sensors for borehole electromagnetic telemetry system Sep. 11, 2007
7265682 Joint source-channel coding for multicarrier modulation Sep. 4, 2007
7250873 Downlink pulser for mud pulse telemetry Jul. 31, 2007
7230543 Downhole clock synchronization apparatus and methods for use in a borehole drilling environment Jun. 12, 2007
7200070 Downhole drilling network using burst modulation techniques Apr. 3, 2007

1 2 3

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