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Class Information
Number: 340/855.6
Name: Communications: electrical > Wellbore telemetering or control (e.g., subsurface tool guidance, data transfer, etc.) > Pulse or digital signal transmission > Digital signal processing in subsurface transmitter > Having acoustic sensor
Description: Subject matter having a subsurface vibratory transducer connected to the digital signal processing apparatus or the electrical communications link.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7305467 |
Autonomous tracking wireless imaging sensor network including an articulating sensor and automatically organizing network nodes |
Dec. 4, 2007 |
| 7158049 |
Wireless communication circuit |
Jan. 2, 2007 |
| 7132958 |
Downhole telemetry system using multiple uplink modes as data channels using discrete multi-tone modulation |
Nov. 7, 2006 |
| 7037268 |
Low profile acoustic sensor arry and sensors with pleated transmission lines and related methods |
May. 2, 2006 |
| 6977867 |
Seismic data acquisition system |
Dec. 20, 2005 |
| 6940420 |
Drill string telemetry system |
Sep. 6, 2005 |
| 6915875 |
Acoustic isolator for downhole applications |
Jul. 12, 2005 |
| 6804875 |
Method of mounting elastic wave generator |
Oct. 19, 2004 |
| 6697298 |
High efficiency acoustic transmitting system and method |
Feb. 24, 2004 |
| 6630890 |
Methods, systems and tools for borehole logging |
Oct. 7, 2003 |
| 6484133 |
Sensor response rate accelerator |
Nov. 19, 2002 |
| 6434084 |
Adaptive acoustic channel equalizer & tuning method |
Aug. 13, 2002 |
| 6405136 |
Data compression method for use in wellbore and formation characterization |
Jun. 11, 2002 |
| 6308562 |
Technique for signal detection using adaptive filtering in mud pulse telemetry |
Oct. 30, 2001 |
| 6272916 |
Acoustic wave transmission system and method for transmitting an acoustic wave to a drilling metal tubular member |
Aug. 14, 2001 |
| 6021095 |
Method and apparatus for remote control of wellbore end devices |
Feb. 1, 2000 |
| 5886255 |
Method and apparatus for monitoring mineral production |
Mar. 23, 1999 |
| 5812068 |
Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto |
Sep. 22, 1998 |
| 5780784 |
Cancellation of tool mode signal from combined signal |
Jul. 14, 1998 |
| 5157392 |
Telemetry network for downhole multistation seismic recording tools |
Oct. 20, 1992 |
| 5062084 |
Borehole digital geophone tool |
Oct. 29, 1991 |
| 4899144 |
Method of transmitting ultrasonic amplitude & time travel information over a logging cable |
Feb. 6, 1990 |
| 4897646 |
Method and apparatus for reducing the effective bandwidth of ultrasonic waveform for transmission over a logging cable |
Jan. 30, 1990 |
| 4808996 |
Simultaneous digitizing apparatus for an acoustic tool |
Feb. 28, 1989 |
| 4797668 |
Acoustic well logging system having multiplexed filter digitizing |
Jan. 10, 1989 |
| 4796026 |
Noise tool and method |
Jan. 3, 1989 |
| 4701892 |
Downhole casing inspection system |
Oct. 20, 1987 |
| 4684947 |
Simultaneous digitizing apparatus for an acoustic tool |
Aug. 4, 1987 |
| 4676310 |
Apparatus for transporting measuring and/or logging equipment in a borehole |
Jun. 30, 1987 |
| 4593559 |
Apparatus and method to communicate bidirectional information in a borehole |
Jun. 10, 1986 |
| 4415895 |
Well logging data transmission system |
Nov. 15, 1983 |
| 4215425 |
Apparatus and method for filtering signals in a logging-while-drilling system |
Jul. 29, 1980 |
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