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Class Information
Number: 340/856.3
Name: Communications: electrical > Wellbore telemetering or control (e.g., subsurface tool guidance, data transfer, etc.) > Including particular sensor
Description: Subject matter having a particularly described feature of an underground condition-responsive sensor which provides information signals.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| RE40944 |
Adjustable shear valve mud pulser and controls therefor |
Oct. 27, 2009 |
| 7453768 |
High-speed, downhole, cross well measurement system |
Nov. 18, 2008 |
| 7283060 |
Control apparatus for automated downhole tools |
Oct. 16, 2007 |
| 7278480 |
Apparatus and method for sensing downhole parameters |
Oct. 9, 2007 |
| 7261162 |
Subsea communications system |
Aug. 28, 2007 |
| 7187298 |
Methods and systems for transmitting and receiving a discrete multi-tone modulated signal in a fluid |
Mar. 6, 2007 |
| 6987463 |
Method for collecting geological data from a well bore using casing mounted sensors |
Jan. 17, 2006 |
| 6924745 |
System and method for monitoring packer slippage |
Aug. 2, 2005 |
| 6825775 |
Method and system for reducing interference |
Nov. 30, 2004 |
| 6781521 |
Filters for canceling multiple noise sources in borehole electromagnetic telemetry system |
Aug. 24, 2004 |
| 6766854 |
Well-bore sensor apparatus and method |
Jul. 27, 2004 |
| 6747570 |
Method for preventing fracturing of a formation proximal to a casing shoe of well bore during drilling operations |
Jun. 8, 2004 |
| 6693554 |
Casing mounted sensors, actuators and generators |
Feb. 17, 2004 |
| 6587055 |
Simultaneous triggering of remote units |
Jul. 1, 2003 |
| 6555926 |
Pulser |
Apr. 29, 2003 |
| 6469637 |
Adjustable shear valve mud pulser and controls therefor |
Oct. 22, 2002 |
| 6434435 |
Application of adaptive object-oriented optimization software to an automatic optimization oilfield hydrocarbon production management system |
Aug. 13, 2002 |
| 6359569 |
Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |
Mar. 19, 2002 |
| 6313755 |
Downhole buried utility sensing and data transmission system and method |
Nov. 6, 2001 |
| 6288975 |
Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors |
Sep. 11, 2001 |
| 6068394 |
Method and apparatus for providing dynamic data during drilling |
May. 30, 2000 |
| 5812068 |
Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto |
Sep. 22, 1998 |
| 5785842 |
Corrosion protection monitoring and adjustment system |
Jul. 28, 1998 |
| 5780784 |
Cancellation of tool mode signal from combined signal |
Jul. 14, 1998 |
| 5550785 |
Mobile seismic system of great length for wells |
Aug. 27, 1996 |
| 5515039 |
Surface/downhole pressure recording system |
May. 7, 1996 |
| 5495755 |
Slick line system with real-time surface display |
Mar. 5, 1996 |
| 5140319 |
Video logging system having remote power source |
Aug. 18, 1992 |
| 4903245 |
Downhole vibration monitoring of a drillstring |
Feb. 20, 1990 |
| 4884071 |
Wellbore tool with hall effect coupling |
Nov. 28, 1989 |
| 4852069 |
Thin bed evaluation device |
Jul. 25, 1989 |
| 4803483 |
Downhole pressure and temperature monitoring system |
Feb. 7, 1989 |
| 4786874 |
Resistivity sensor for generating asymmetrical current field and method of using the same |
Nov. 22, 1988 |
| 4662209 |
Course length measurement |
May. 5, 1987 |
| 4596293 |
Targetable drill with pressure telemetering of drill parameters |
Jun. 24, 1986 |
| 4547774 |
Optical communication system for drill hole logging |
Oct. 15, 1985 |
| 4524324 |
Downhole instrument including a flexible probe which can travel freely around bends in a borehole |
Jun. 18, 1985 |
| 4507735 |
Method and apparatus for monitoring and controlling well drilling parameters |
Mar. 26, 1985 |
| 4389645 |
Well logging fiber optic communication system |
Jun. 21, 1983 |
| 4021774 |
Borehole sensor |
May. 3, 1977 |
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