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7348892 |
Pipe mounted telemetry receiver
Methods and apparatus for receiving a telemetry signal with a receiver that is moveably disposed within a drillstring. In certain embodiments, the system comprises a surface module coupled to the...
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7324011 |
Method and system for pipeline communication
A pipeline communication system and method includes a pipeline having a surface extending along at least a portion of the length of the pipeline. A conductive bus is formed to and extends along a...
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7257050 |
Through tubing real time downhole wireless gauge
A telemetry system having: a pipe; a SCADA box acoustically coupled to the pipe; and a gauge inserted in the pipe, the gauge comprising: an acoustic wave generator; a coupler mechanically connected...
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7256707 |
RF transmission line and drill/pipe string switching technology for down-hole telemetry
A modulated reflectance well telemetry apparatus having an electrically conductive pipe extending from above a surface to a point below the surface inside a casing. An electrical conductor is...
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7253745 |
Corrosion-resistant downhole transmission system
An apparatus in accordance with the invention may include a downhole tool and a data transmission path incorporated into the downhole tool. The data transmission path may include one or more...
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7228902 |
High data rate borehole telemetry system
A system and method for communicating information between downhole equipment in a wellbore and surface equipment, comprising a first device disposed in a wellbore for receiving at least one first...
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7193526 |
Downhole tool
A double shouldered downhole tool connection comprises box and pin connections having mating threads intermediate mating primary and secondary shoulders. The connection further comprises a...
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7154412 |
High-power well logging method and apparatus
A power delivery system for a wireline tool includes two independent power transmission loops operating on a standard six-conductor cable. The two loops each connect directly to a respective...
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7132958 |
Downhole telemetry system using multiple uplink modes as data channels using discrete multi-tone modulation
A method and a downhole telemetry system a downhole telemetry system using discrete multitone modulation for transmitting a data stream over a plurality of transmission modes is provided. The...
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7071837 |
Data transmission in pipeline systems
Data transmission in pipeline systems A first set of apparatus is arranged for transmitting data from a point in a cased section of a well 1, 3 to a remote location. The apparatus may be used as...
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7006009 |
Servicing system for wells
A well servicing system includes a computer-based system that monitors pumping or other service operations at a well site and monitors deliveries and withdrawals of chemicals at a bulk storage...
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6888473 |
Repeatable reference for positioning sensors and transducers in drill pipe
A drill pipe having a box end having a tapered thread, and an internal shoulder and an external face for engagement with a drill pipe pin end having a tapered mating thread, and an external...
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6866306 |
Low-loss inductive couplers for use in wired pipe strings
A first flux-loop inductive coupler element electrically couples with a second flux-loop inductive coupler element. The first flux-loop inductive coupler element comprises a first ring-like core...
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6864801 |
Reservoir monitoring through windowed casing joint
An apparatus and a method for controlling oilfield production to improve efficiency includes a remote sensing unit that is placed within a subsurface formation, an antenna structure for...
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6761219 |
Casing conveyed perforating process and apparatus
A process and apparatus for completing a subterranean well bore in at least one subterranean formation. At least one perforating gun assembly is positioned on the outside of casing in a...
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6727828 |
Pressurized system for protecting signal transfer capability at a subsurface location
A system for protecting the transmission of signals from and/or to a tool in a high pressure environment. The system includes a tool connected to a signal transmission line, such as an electrical...
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6715550 |
Controllable gas-lift well and valve
A gas-lift well having a controllable gas-lift valve is provided. The well uses the tubing and casing to communicate with and power the controllable valve from the surface. Induction chokes at the...
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6659174 |
System and method of tracking use time for electric motors and other components used in a subterranean environment
A component, such as an electric motor, for use in a subterranean environment. The component comprises an attached recording system to record the cumulative use time of the component. The recording...
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6628206 |
Method and system for the transmission of informations by electromagnetic wave
A method and a system for the transmission of information from a well ( 1; 20 ) drilled through geological formation layers ( 3 ) at least partly cased by metal tubes ( 4; 23; 24; 31 ). The method...
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6614360 |
Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers
An acoustic MWD system comprises at least one transmitter array and at least one receiver array spaced axially along an essentially tubular downhole subassembly. Each transmitter and receiver array...
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6515592 |
Power and signal transmission using insulated conduit for permanent downhole installations
An apparatus and method is presented for establishing electrical connection to permanent downhole oilfield installations using an electrically insulated conducting casing. Current is caused to flow...
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6498568 |
Pipeline communication system
A pipeline communication system. The system uses the pipeline and the adjacent ground and includes branches with junctions. Governor modules and transformers/rectifiers form part of the network....
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6070662 |
Formation pressure measurement with remote sensors in cased boreholes
The present invention relates to a method and apparatus for establishing communication in a cased wellbore with a data sensor that has been remotely deployed, prior to the installation of casing in...
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5945923 |
Device and method for transmitting information by electromagnetic waves
A device and method for transmitting information between a well bottom and the surface by means of electromagnetic waves. The device includes transmitting information on either side of a valve (9)...
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5818352 |
Well data telemetry system
A well data telemetry system for transmitting data along at least a part of a well bore containing tubing of magnetically permeable material comprises a transmitting coil located to transmit a...
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5576703 |
Method and apparatus for communicating signals from within an encased borehole
A method and apparatus for communicating signals from within an encased borehole including a wireless communications system for transmitting down-hole environmental data signals between a down-hole...
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5512889 |
Downhole instruments for well operations
Pressure and temperature signals are transmitted between a predetermined point in a wellbore and the earth's surface by an electromagnetic wave transmitter disposed in the well and connected to a...
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5491644 |
Cell engineering tool and methods
A cell engineering tool (10) evaluates wireless communications channels within and around architectural structures, such as buildings, in order to determine communications transfer characteristics,...
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5396232 |
Transmitter device with two insulating couplings for use in a borehole
In order to enable information such as the results of physical measurements performed downhole in an oil well during testing or production to be transmitted in real time to a receiver on the...
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5394141 |
Method and apparatus for transmitting information between equipment at the bottom of a drilling or production operation and the surface
Information can be transmitted between equipment at the bottom of a drilling operation and the surface. A transceiver is provided at the surface, and is connected to both the earth, or the bottom...
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4878053 |
Actuation method
A subsurface valve-actuator combination for well production tubing is described. The valve is urged to closed position but held open by a battery-operated latch of the actuator. A receiver-relay in...
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4845494 |
Method and apparatus using casing and tubing for transmitting data up a well
Method and apparatus for transmitting data uphole in a well to the top of the well. A string of electrically conductive tubing and a tool connected to the tubing are lowered down the well along the...
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4821035 |
Method and apparatus using a well casing for transmitting data up a well
A tool with a switch is inserted and moved down the inside of tubular-shaped and electrically conductive casing in the well. Spaced apart contacts on the tool are connected between upper and lower...
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4812812 |
Apparatus and method for determining the position and orientation of a remote object
An apparatus and method for determining the position and orientation of a remote object in relation to an observation point comprises a transmitter for sending a magnetic field signal and a...
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4739325 |
Apparatus and method for down-hole EM telemetry while drilling
An MWD EM data/control telemetry link between down-hole instruments and ground surface instruments dynamically adapts to the underground electrical environment utilizing a down-hole microprocessor...
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4736298 |
Method of detecting collars using computerized pattern recognition
A method of determining the location and dimensions of collars present along a section of casing. An inspection instrument is passed through the casing section generating an electromagnetic wave...
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4725837 |
Toroidal coupled telemetry apparatus
A downhole toroidal coupled telemetry apparatus is disclosed in which the secondary winding comprises a plurality of turns wrapped around a generally annular core member.
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4724434 |
Method and apparatus using casing for combined transmission of data up a well and fluid flow in a geological formation in the well
The method uses a tubular shaped and electrically conductive well casing that extends to a geological formation in an oil or gas well. The casing is used for both flowing fluid between the...
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4691203 |
Downhole telemetry apparatus and method
A system and method is described for amplifying and transmitting an information signal from a downhole drillstring location. The amplifier shifts the relatively low frequency information signal up...
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4630243 |
Apparatus and method for logging wells while drilling
Measurement while drilling apparatus for detecting and communicating information relative to downhole parameters and/or characteristics of the earth strata via an electrically conductive drill...
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4616702 |
Tool and combined tool support and casing section for use in transmitting data up a well
A tool changes the electrical conductance across a nonconductive separation in a string of electrically conductive casing in a well located in the earth. The tool is for transmission of data up the...
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4525715 |
Toroidal coupled telemetry apparatus
A logging telemetering system comprising a toroidal coupled telemetry apparatus including a primary winding carrying bore hole data, wrapped around at last one torroid core mounted within a drill...
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4387372 |
Point gap assembly for a toroidal coupled telemetry system
An insulated point gap assembly for a toroidal coupled telemetry system wherein a drill collar (38), operable to be connected to a lower portion of a drill string (32), carries a toroidal core...
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4181014 |
Remote well signalling apparatus and methods
Information is conducted upwardly from a location deep within a well by a transmitter which is located in the well and induces electrical currents in the surrounding earth formation. These currents...
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4087781 |
Electromagnetic lithosphere telemetry system
A lithospheric electromagnetic telemetry system specifically adapted for telemetry of oil well drilling parameters from well bottom to surface of the earth. Sensors measure such parameters as...
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3967201 |
Wireless subterranean signaling method
A relatively low frequency wireless electromagnetic communication link is established through a subterranean lossy medium such as ground or water by launching and propagating magnetic waves of...
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3928841 |
Well logging system using single conductor cable
The present invention pertains to well logging and specifically to a system adapted for use with inexpensive cables consisting of a single conductor sheathed in a smooth insulating jacket.
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3900878 |
Mine rescue system
A mine rescue system for locating trapped miners following a mine disaster. A transmitting device deployed by the trapped miners transmits a signal at a frequency below 3 kHz. The phase of the...
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3437992 |
SELF-CONTAINED DOWNHOLE PARAMETER SIGNALLING SYSTEM
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3315224 |
Remote control system for borehole logging devices
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