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Class Information
Number: 340/854.9
Name: Communications: electrical > Wellbore telemetering or control (e.g., subsurface tool guidance, data transfer, etc.) > Using a specific transmission medium (e.g., conductive fluid, annular spacing, etc.) > Cable or wire (e.g., conductor as support, etc.)
Description: Subject matter wherein an electrical information or control signal is transmitted over an electrical conductor forming an elongate element.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5515039 |
Surface/downhole pressure recording system |
May. 7, 1996 |
| 5515038 |
Data transmission system |
May. 7, 1996 |
| 5504479 |
Carrierless amplitude and phase modulation telementry for use in electric wireline well logging |
Apr. 2, 1996 |
| 5495547 |
Combination fiber-optic/electrical conductor well logging cable |
Feb. 27, 1996 |
| 5493288 |
System for multidirectional information transmission between at least two units of a drilling assembly |
Feb. 20, 1996 |
| 5485745 |
Modular downhole inspection system for coiled tubing |
Jan. 23, 1996 |
| 5473321 |
Method and apparatus to train telemetry system for optimal communications with downhole equipment |
Dec. 5, 1995 |
| 5448477 |
Systems for input and output of data to a well tool |
Sep. 5, 1995 |
| 5444184 |
Method and cable for transmitting communication signals and electrical power between two spaced-apart locations |
Aug. 22, 1995 |
| 5387907 |
High data rate wireline telemetry system |
Feb. 7, 1995 |
| 5363094 |
Stationary system for the active and/or passive monitoring of an underground deposit |
Nov. 8, 1994 |
| 5355128 |
Video logging system having an optical communications link |
Oct. 11, 1994 |
| 5294923 |
Method and apparatus for relaying downhole data to the surface |
Mar. 15, 1994 |
| 5285204 |
Coil tubing string and downhole generator |
Feb. 8, 1994 |
| 5278549 |
Wireline cycle life counter |
Jan. 11, 1994 |
| 5275038 |
Downhole reeled tubing inspection system with fiberoptic cable |
Jan. 4, 1994 |
| 5192948 |
Geophone borehole cable |
Mar. 9, 1993 |
| 5140318 |
Data transmission system for downhole logging tools |
Aug. 18, 1992 |
| 5140319 |
Video logging system having remote power source |
Aug. 18, 1992 |
| 4905203 |
Downhole doppler flowmeter |
Feb. 27, 1990 |
| 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 |
| 4891641 |
Method for transmitting data over logging cable |
Jan. 2, 1990 |
| 4884439 |
Hydraulic circuit use in wireline formation tester |
Dec. 5, 1989 |
| 4876539 |
Parameter telemetering from the bottom of a deep borehole |
Oct. 24, 1989 |
| 4868565 |
Shielded cable |
Sep. 19, 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 |
| 4828051 |
Method and apparatus for data transmission in a well using a flexible line with stiffener |
May. 9, 1989 |
| 4803479 |
Electrical phase measurement means and method for accurate determination of well logging cable length |
Feb. 7, 1989 |
| 4803483 |
Downhole pressure and temperature monitoring system |
Feb. 7, 1989 |
| 4788545 |
Parameter telemetering from the bottom of a deep borehole |
Nov. 29, 1988 |
| 4720996 |
Power control system for subsurface formation testing apparatus |
Jan. 26, 1988 |
| 4689620 |
Method and apparatus for data transmission between a transmission and a receiver disposed in a drill hole and a transmitter and a receiver disposed above ground |
Aug. 25, 1987 |
| 4665398 |
Method of sampling and recording information pertaining to a physical condition detected in a well bore |
May. 12, 1987 |
| 4663628 |
Method of sampling environmental conditions with a self-contained downhole gauge system |
May. 5, 1987 |
| 4652876 |
Remote switch position determination using constant current signaling |
Mar. 24, 1987 |
| 4583093 |
Telemetry driving circuit |
Apr. 15, 1986 |
| 4567759 |
Method and apparatus for producing an image log of a wall of a borehole penetrating an earth formation |
Feb. 4, 1986 |
| 4545242 |
Method and apparatus for measuring the depth of a tool in a borehole |
Oct. 8, 1985 |
| 4524324 |
Downhole instrument including a flexible probe which can travel freely around bends in a borehole |
Jun. 18, 1985 |
| 4523194 |
Remotely operated downhole switching apparatus |
Jun. 11, 1985 |
| 4455529 |
Digital induction logging tool including means for measuring phase quadrature components in a phase sensitive detector |
Jun. 19, 1984 |
| 4390878 |
Two receiver noise loggers |
Jun. 28, 1983 |
| 4350979 |
System and method for well-logging |
Sep. 21, 1982 |
| 4348671 |
Dual spectra well logging system |
Sep. 7, 1982 |
| 4178579 |
Remote instrumentation apparatus |
Dec. 11, 1979 |
| 4107644 |
System and method for digitally transmitting well logging information |
Aug. 15, 1978 |
| 4093936 |
Logging method and apparatus |
Jun. 6, 1978 |
| 4057781 |
Well bore communication method |
Nov. 8, 1977 |
| 4028660 |
Well logging method and means using an armored multiconductor coaxial cable |
Jun. 7, 1977 |
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