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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6208265 |
Electromagnetic signal pickup apparatus and method for use of same |
Mar. 27, 2001 |
| 6177882 |
Electromagnetic-to-acoustic and acoustic-to-electromagnetic repeaters and methods for use of same |
Jan. 23, 2001 |
| 6137747 |
Single point contact acoustic transmitter |
Oct. 24, 2000 |
| 6094401 |
Inverse vertical seismic profiling using a measurement while drilling tool as a seismic source |
Jul. 25, 2000 |
| 6084826 |
Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers |
Jul. 4, 2000 |
| 6018501 |
Subsea repeater and method for use of the same |
Jan. 25, 2000 |
| 5995446 |
Method of conducting drilling operations using vertical seismic profiles |
Nov. 30, 1999 |
| 5955966 |
Signal recognition system for wellbore telemetry |
Sep. 21, 1999 |
| 5914911 |
Method of recovering data acquired and stored down a well, by an acoustic path, and apparatus for implementing the method |
Jun. 22, 1999 |
| 5808779 |
Optical fiber modulation and demodulation system |
Sep. 15, 1998 |
| 5602541 |
System for drilling deviated boreholes |
Feb. 11, 1997 |
| 5535177 |
MWD surface signal detector having enhanced acoustic detection means |
Jul. 9, 1996 |
| 5511037 |
Comprehensive method of processing measurement while drilling data from one or more sensors |
Apr. 23, 1996 |
| 5459697 |
MWD surface signal detector having enhanced acoustic detection means |
Oct. 17, 1995 |
| 5410303 |
System for drilling deivated boreholes |
Apr. 25, 1995 |
| 5359324 |
Well logging apparatus for investigating earth formations |
Oct. 25, 1994 |
| 5237540 |
Logging while drilling tools utilizing magnetic positioner assisted phase shifts |
Aug. 17, 1993 |
| 5160925 |
Short hop communication link for downhole MWD system |
Nov. 3, 1992 |
| 5151882 |
Method for deconvolution of non-ideal frequency response of pipe structures to acoustic signals |
Sep. 29, 1992 |
| 5119089 |
Downhole seismic sensor cable |
Jun. 2, 1992 |
| 5067114 |
Correlation for combinational coded telemetry |
Nov. 19, 1991 |
| 5006845 |
Gas kick detector |
Apr. 9, 1991 |
| 4945761 |
Method and device for transmitting data by cable and mud waves |
Aug. 7, 1990 |
| 4934186 |
Automatic echo meter |
Jun. 19, 1990 |
| 4908804 |
Combinatorial coded telemetry in MWD |
Mar. 13, 1990 |
| 4903245 |
Downhole vibration monitoring of a drillstring |
Feb. 20, 1990 |
| 4897646 |
Method and apparatus for reducing the effective bandwidth of ultrasonic waveform for transmission over a logging cable |
Jan. 30, 1990 |
| 4896152 |
Telemetry system with a sending station using recursive filter for bandwidth limiting |
Jan. 23, 1990 |
| 4873522 |
Method for transmitting downhole data in a reduced time |
Oct. 10, 1989 |
| 4862426 |
Method and apparatus for operating equipment in a remote location |
Aug. 29, 1989 |
| 4855732 |
System for the transmission of signals between a reception assembly lowered into a well and a central control and recording laboratory |
Aug. 8, 1989 |
| 4852070 |
Method and apparatus for transmitting and processing data from well logging tool |
Jul. 25, 1989 |
| 4823125 |
Method and apparatus for stabilizing a communication sensor in a borehole |
Apr. 18, 1989 |
| 4803483 |
Downhole pressure and temperature monitoring system |
Feb. 7, 1989 |
| 4797668 |
Acoustic well logging system having multiplexed filter digitizing |
Jan. 10, 1989 |
| 4788545 |
Parameter telemetering from the bottom of a deep borehole |
Nov. 29, 1988 |
| 4721355 |
Optical cable connector assembly including breakable link and process using same |
Jan. 26, 1988 |
| 4698794 |
Device for remote transmission of information |
Oct. 6, 1987 |
| 4691203 |
Downhole telemetry apparatus and method |
Sep. 1, 1987 |
| 4631536 |
Multiplex submersible pump telemetry system |
Dec. 23, 1986 |
| 4584675 |
Electrical measuring while drilling with composite electrodes |
Apr. 22, 1986 |
| 4545242 |
Method and apparatus for measuring the depth of a tool in a borehole |
Oct. 8, 1985 |
| 4532614 |
Wall bore electrical generator |
Jul. 30, 1985 |
| 4523465 |
Wireless remote liquid level detector and indicator for well testing |
Jun. 18, 1985 |
| 4452075 |
Push drill guidance indication apparatus |
Jun. 5, 1984 |
| 4416000 |
System for employing high temperature batteries for making measurements in a borehole |
Nov. 15, 1983 |
| 4387372 |
Point gap assembly for a toroidal coupled telemetry system |
Jun. 7, 1983 |
| 4348672 |
Insulated drill collar gap sub assembly for a toroidal coupled telemetry system |
Sep. 7, 1982 |
| 4227405 |
Digital mineral logging system |
Oct. 14, 1980 |
| 4207619 |
Seismic well logging system and method |
Jun. 10, 1980 |
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