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Class Information
Number: 367/82
Name: Communications, electrical: acoustic wave systems and devices > Wellbore telemetering > Through drill string or casing
Description: Subject matter wherein the medium is, or is contained in, means connecting a drill bit in the passageway to driving apparatus on the earth"s surface.

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8704677 Reliable downhole data transmission system Apr. 22, 2014
8639186 Telemetry conveyed by pipe utilizing specks Jan. 28, 2014
8634273 Acoustic telemetry system using passband equalization Jan. 21, 2014
8605548 Bi-directional wireless acoustic telemetry methods and systems for communicating data along a pipe Dec. 10, 2013
8594572 Wireless electric power transmission through wall Nov. 26, 2013
8570832 Variable throat venturi flow meter having a plurality of section-varying elements Oct. 29, 2013
8561697 Downhole tool delivery system with self activating perforation gun Oct. 22, 2013
8559272 Acoustic logging while drilling tool having raised transducers Oct. 15, 2013
8502696 Dual wellbore telemetry system and method Aug. 6, 2013
8472282 Method and apparatus for acoustic data transmission in a subterranean well Jun. 25, 2013
8437220 Parallel-path acoustic telemetry isolation system and method May. 7, 2013
8369667 Downhole cable Feb. 5, 2013
8284075 Apparatus and methods for self-powered communication and sensor network Oct. 9, 2012
8272439 Downhole tool delivery system with self activating perforation gun Sep. 25, 2012
8270251 Acoustic isolator Sep. 18, 2012
8242928 Reliable downhole data transmission system Aug. 14, 2012
8243550 Downhole communication method and system Aug. 14, 2012
8193946 Training for directional detection Jun. 5, 2012
8179278 Downhole communication devices and methods of use May. 15, 2012
8179279 Method and device for producing hydrocarbons using wireless communication May. 15, 2012
8164980 Methods and apparatuses for data collection and communication in drill string components Apr. 24, 2012
8162051 Downhole tool delivery system with self activating perforation gun Apr. 24, 2012
8134476 Apparatus and methods for self-powered communication and sensor network Mar. 13, 2012
8111171 Wellbore telemetry and noise cancellation systems and methods for the same Feb. 7, 2012
8090227 Purging of fiber optic conduits in subterranean wells Jan. 3, 2012
8064289 Measuring device for a drilling apparatus Nov. 22, 2011
8040755 Wired pipe depth measurement system Oct. 18, 2011
8040249 Acoustic telemetry transceiver Oct. 18, 2011
8022840 Telemetry transmitter optimization using time domain reflectometry Sep. 20, 2011
8013756 Estimation of properties of mud Sep. 6, 2011
8009059 Downhole power generation and communications apparatus and method Aug. 30, 2011
8004421 Wellbore telemetry and noise cancellation systems and method for the same Aug. 23, 2011
7990282 Borehole telemetry system Aug. 2, 2011
7983113 Method and apparatus for downlink communication using dynamic threshold values for detecting transmitted signals Jul. 19, 2011
RE42426 Apparatus and method for transmitting information to and communicating with a downhole device Jun. 7, 2011
7932834 Data relay system for instrument and controller attached to a drill string Apr. 26, 2011
7911879 Method of detecting signals in acoustic drill string telemetry Mar. 22, 2011
7872945 Dynamic efficiency optimization of piezoelectric actuator Jan. 18, 2011
7859426 Electromagnetic wellbore telemetry system for tubular strings Dec. 28, 2010
7852232 Downhole tool adapted for telemetry Dec. 14, 2010
7827014 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations Nov. 2, 2010
7817061 Telemetry transmitter optimization using time domain reflectometry Oct. 19, 2010
7806180 Signalling systems and methods for communicating with a downhole location in a well installation Oct. 5, 2010
7805247 System and methods for well data compression Sep. 28, 2010
7777644 Method and conduit for transmitting signals Aug. 17, 2010
7777645 Acoustic telemetry transceiver Aug. 17, 2010
7768423 Telemetry transmitter optimization via inferred measured depth Aug. 3, 2010
7646310 System for communicating downhole information through a wellbore to a surface location Jan. 12, 2010
7637161 Substrate penetrating acoustic sensor Dec. 29, 2009
7605715 Electromagnetic wellbore telemetry system for tubular strings Oct. 20, 2009

1 2 3 4 5

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