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Class 340/854.5 - Wellbore casing or ground


Subclass of Class 340 - Communications: electrical
Definition: Subject matter including conduction or passage of the signal
No. of patents: 67
Last issue date: 09/09/2008


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NumberTitleIssue Date
7424176Optical fiber termination apparatus and methods of use, and optical fiber termination process
Apparatus and methods for terminating and anchoring fiber optic connections are disclosed. One apparatus includes a sealed body enclosing a passage for one or more optical fibers terminating in connections proximate a first end of the sealed body, the sealed body ha...
09/09/2008
7348892Pipe 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 upper end of a drillstring, an upper module detachably connected to th...
03/25/2008
7324011Method 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 portion of the surface of the pipeline. The conductive bus includes a ...
01/29/2008
7322410Controllable production well packer
An apparatus and method for operating an electrically powered device in a packer using the piping structure of the well as an electrical conductor for providing power and/or communications. The electrically powered device may comprise an electrically controllable va...
01/29/2008
7259688Wireless reservoir production control
A reservoir production control system includes a plurality of wells for producing a reservoir linked to a central computer over a downhole communication network and a surface communication network. Both the downhole and the surface communication networks are wireles...
08/21/2007
7255183Gap sub assembly
The gap sub assembly comprises a pair of electrically conductive subs. Each sub has a threaded pin and box. A pin and box are threaded together to form a connection. An electrically insulating, woven fabric overlies and conforms with the threads of the connection pi...
08/14/2007
7257050Through 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 to the acoustic wave generator, wherein the coupler is engageable an...
08/14/2007
7256707RF 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 located at a position a distance from the electrically conductive pipe and...
08/14/2007
7253745Corrosion-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 contact surfaces providing electrical continuity to the data transmission p...
08/07/2007
7228902High 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 signal and transmitting at least one second signal. A surface device i...
06/12/2007
7193526Downhole 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 secondary shoulder component retained in the box connection intermediate a fl...
03/20/2007
7173542Data relay for casing mounted sensors, actuators and generators
A casing sensor and methods for sensing using a casing sensor are disclosed. The casing sensor includes a casing shoe and a sensor coupled to the casing shoe. A casing data relay includes a downhole receiver coupled to a well casing and a transmitter coupled to the ...
02/06/2007
7170424Oil well casting electrical power pick-off points
A power supply apparatus is provided for supplying power and communications within a first piping structure. An external power transfer device is positioned around the first piping structure and is magnetically coupled to an internal power transfer device. The inter...
01/30/2007
7168510Electrical transmission apparatus through rotating tubular members
The present invention provides an apparatus for the communication of power or data signals across the rotating gap of two tubular members, such as the stator and rotor of a mud motor, and between said rotating members of a drill string through inductive couplers loc...
01/30/2007
7163065Combined telemetry system and method
Telemetry systems and methods are disclosed for real time communication of information between multiple positions in a wellbore. ...
01/16/2007
7154412High-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 terminals of a DC auxiliary power supply. Each loop also couples through a ...
12/26/2006
7147059Use of downhole high pressure gas in a gas-lift well and associated methods
A gas-lift petroleum well and method for producing petroleum products using downhole pressurized gas to provide lift. The gas-lift well having a well casing, a production tubing, a packer, and a gas-lift valve. The well casing extends within a wellbore of the well, ...
12/12/2006
7132958Downhole 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 downhole telemetry system includes a downhole transmitter, a cable, and a ...
11/07/2006
7114561Wireless communication using well casing
A petroleum well having a borehole extending into a formation is provided. A piping structure is positioned within the borehole, and an induction choke is positioned around the piping structure downhole. A communication system is provided along the piping structure ...
10/03/2006
7116244Method and system for producing a magnetic field signal usable for locating an underground object
Transmitted magnetic field signals useable for locating an underground object, and methods and systems for generating the same. The magnetic field signal has desired spectral characteristics. More specifically, the transmitted magnetic field signal includes a carrie...
10/03/2006
7093680Subsurface signal transmitting apparatus
An insulator for a subsurface signal transmitting apparatus. The insulator includes a housing, a mandrel axially disposed inside the housing, a first insulating material disposed between the housing and the mandrel, a first sleeve formed of a second insulating mater...
08/22/2006
7075454Power generation using batteries with reconfigurable discharge
A petroleum well for producing petroleum products that incorporates a system adapted to provide power to a downhole device in the well. The system includes a current impedance device and a downhole power storage device. The current impedance device is positioned suc...
07/11/2006
7073594Wireless downhole well interval inflow and injection control
An apparatus and methods of electrically controlling downhole well interval inflow and/or injection. The downhole controllable well section having a communications and control module, a sensor, an electrically controllable valve and an induction choke. The electrica...
07/11/2006
7071837Data 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 a relay station 6 to increase operational depth. Signals ...
07/04/2006
7055592Toroidal choke inductor for wireless communication and control
An induction choke in a petroleum well where a voltage potential is developed across the choke to power and communicate with devices and sensors in the well. Preferably, the induction choke is a ferromagnetic material and acts as an impedance to a time-varying curre...
06/06/2006
7007756Providing electrical isolation for a downhole device
An isolation apparatus is provided between an electrical conductor and an electrically-activated well tool. The isolation apparatus has a blocking element to enable a signal having a first electrical polarity to pass through the element. The blocking element blocks ...
03/07/2006
7006009Servicing 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 station. A GPS device or other location identifier provides a location va...
02/28/2006
6995677Apparatus and methods for monitoring pipelines
A system for monitoring at least one parameter of interest relating to a flow conduit having a through passage and a fluid flow therein comprises at least one measurement station coupled to the flow conduit for taking a measurement relating to the parameter of inter...
02/07/2006
6968735Long range data transmitter for horizontal directional drilling
An apparatus for monitoring conditions in subterranean borehole during drilling and pullback operations in real time. The apparatus includes a drill string having a working end. A measurement system suitable for measuring at least one operational characteristic of t...
11/29/2005
6888473Repeatable 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 shoulder and an external face adapted for data acquisition or transmission. ...
05/03/2005
6866306Low-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 having high magnetic permeability and a conical-section annular first f...
03/15/2005
6864801Reservoir 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 communicating with the remote sensing unit, a casing joint having nonconductive ...
03/08/2005
6798338RF communication with downhole equipment
Data or control signals are communicated over a three phase power cable supplying power from a surface location to a motor/pump assembly located within a wellbore utilizing modulated radio frequency signals. The radio frequency signals may be impressed on the power ...
09/28/2004
6761219Casing 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 subterranean well bore. A suitable signal, such as a hydraulic, electric or wave...
07/13/2004
6727828Pressurized 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 cable or optical fiber. The signal transmission line is surrounded by ...
04/27/2004
6715550Controllable 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 surface and downhole electrically isolate the tubing from the casing....
04/06/2004
6659174System 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 system typically includes a timing circuit or other circu...
12/09/2003
6628206Method 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 includes the placing in said well of an information transceiver ...
09/30/2003
6614360Measurement-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 includes a plurality of elements circumferentially dispos...
09/02/2003
6515592Power 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 in the casing by a source on the surface connected to the...
02/04/2003
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