Matches 1 - 50 out of 145 1 2 3 >
Match Document Document Title
7301474 Wireless communication system and method  
A wireless communication system for use in well, subsea, and oilfield-related environments employs one or more wireless network devices that offer short-range wireless communication between devices...
7268696 Directional signal and noise sensors for borehole electromagnetic telemetry system  
An electromagnetic borehole telemetry system providing improved signal to noise ratio. Adaptive filters use noise channels as references to remove noise from the signal channel. Directional...
7256706 Hybrid well communication system  
A hybrid, hardwired and wireless well communication system having a fiber optical, electrical or other signal transmission conduit extending from the wellhead into the well and one or more wireless...
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...
7219748 Downhole signal source  
A signaling apparatus comprises a magnet and a shield moveable relative to the magnet. The shield is moveable relative to the magnet between a first position in which the magnet is relatively...
7212132 Downhole signal source  
A signaling apparatus comprises a magnet and a shield moveable relative to the magnet. The shield is moveable relative to the magnet between a first position in which the magnet is relatively...
7187297 Methods for sealing openings in tubulars  
Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in...
7173542 Data 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...
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...
7154411 Reservoir management system and method  
A remote sensing unit for sensing subsurface formation is provided. The remote sensing unit is an active device with the capability of responding to control commands to determine subsurface...
7151466 Data-fusion receiver  
This invention is an ultra-low frequency electromagnetic telemetry receiver which fuses multiple input receive sources to synthesize a decodable message packet from a noise corrupted telemetry...
7151465 Method and apparatus for transmitting information between a salt-cavern and the surface of the ground  
A method of transmitting information between a salt-cavern and the surface of the ground, the cavern being drilled in geological formation beds and being connected to the surface via an access...
7149472 Through-the-earth radio  
A through-the-earth communication system that includes a digital signal input device; a transmitter operating at a predetermined frequency sufficiently low to effectively penetrate useful distances...
7119711 Communicating with an underground object  
A data sonde for use in horizontal drilling is provided, the data sonde comprising an antenna for emitting a first modulated signal from the data sonde, the first signal comprising zero and...
7113097 Underwater device with transmitter  
An apparatus that attaches to a moving, typically man-made, underwater object and that is capable of sending a signal is disclosed. The apparatus includes a housing, which in some embodiments is...
7102532 Subsea communication  
Methods of subsea communication in which a cathodic protection anode is used as a transmitting antenna. The signals are received at a second location by two electrodes which are spaced apart by...
7098802 Signal connection for a downhole tool string  
A signal transmission connection for a tool string used in exploration and production of natural resources, namely: oil, gas, and geothermal energy resources. The connection comprises first and...
7088260 High speed data communication protocol for use with EM data telemetry antennae  
A communication method for retrieving stored data from an MWD tool, through an antenna used for conventional EM data telemetry. The method comprises establishing electrical contact between a...
7075454 Power 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...
7064677 Method of monitoring service operations of a service vehicle at a well site  
A method monitors servicing operations of a vehicle capable for example of pumping various fluid treatments down into a well being serviced at a well site. The method records the vehicle's engine...
7043204 Through-the-earth radio  
A method and apparatus for effective through-the-earth communication involves a signal input device connected to a transmitter operating at a predetermined frequency sufficiently low to effectively...
7043023 Software defined radio and radio system  
In order to provide a software defined radio and an approval system of a radio which can flexibly cope with specification alteration, a software defined radio includes a storage for holding...
6995684 Retrievable subsurface nuclear logging system  
Systems and methods utilizing an elongated sub body adapted to receive a run-in tool within its inner bore. The run-in tool including nuclear sources and sensors to provide nuclear formation...
6995677 Apparatus 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...
6989764 Apparatus and method for downhole well equipment and process management, identification, and actuation  
A method for actuating or installing downhole equipment in a wellbore employs non-acoustic signals (e.g., radio frequency signals) to locate, inventory, install, or actuate one downhole structure...
6975243 Downhole tubular with openings for signal passage  
Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in...
6972678 Wireless-based system and method for hull-based sensing  
The present invention describes a wireless system and method for distributing sensors in large numbers that makes possible the application of a number of algorithms for the extraction of important...
6967589 Gas/oil well monitoring system  
A system for monitoring a gas/oil well is provided with a monitoring unit, a relay unit and a host interface. A monitoring unit collects data regarding the status of the gas/oil well and wirelessly...
6937159 Downhole telemetry and control system using orthogonal frequency division multiplexing  
A power transmission and data communications system for use in a gas or oil well borehole is disclosed. The borehole includes a casing and a piping structure therein and at least one downhole...
6926098 Insulative gap sub assembly and methods  
Devices and methods for incorporating a gap sub assembly into a drill string to electrically isolate portions of a transmitter assembly within, for example, an MWD tool located within the drill...
6917303 Logging sondes for use in boreholes  
A wireline logging sonde for sensing fluid properties in a bore hole. The sonde has a main body and a plurality of sensor capsules mounted peripherally to the main body on fingers. A sensor element...
6909667 Dual channel downhole telemetry  
The present disclosure provides several methods for selecting and transmitting information from downhole using more than one channel of communication wherein data streams transmitted up each...
6903660 Inductively-coupled system for receiving a run-in tool  
Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in...
6891477 Apparatus and methods for remote monitoring of flow conduits  
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...
6885308 Logging while tripping with a modified tubular  
Method and system for subsurface logging utilizing a modified tubular having an elongated body with tubular walls and a central bore adapted to receive a support member. The tubular including...
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...
6856255 Electromagnetic power and communication link particularly adapted for drill collar mounted sensor systems  
An electromagnetic coupling system is disclosed which includes a first electromagnetic transducer sealingly disposed in an outer wall of a tool mandrel, the mandrel adapted to be positioned in a...
6840440 Identifying system of overlapped tag  
An identifying system for overlapped tags, wherein one of the tags, e.g., a tag to be appended to an article, has an antenna coil and a radio frequency identification device (RFID) connected to the...
6836218 Modified tubular equipped with a tilted or transverse magnetic dipole for downhole logging  
Method and system for subsurface logging utilizing a modified metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a support member. The tubular...
6831571 Logging device data dump probe  
A method and apparatus for transferring data from a logging tool to a surface computer that involves attaching a stand-alone data dump device to the logging tool after the logging tool has gathered...
6822579 Steerable transceiver unit for downhole data acquistion in a formation  
A method and apparatus for collecting data downhole in a well bore, even during drilling operations, are disclosed. The apparatus generally comprises an antenna and some associated electronic...
6801136 Method of reducing noise in a borehole electromagnetic telemetry system  
A method for reducing noise in borehole electromagnetic telemetry systems in which a signal receiver is positioned at a distance from a drill site borehole at which the signal receiver couples...
6798338 RF 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...
6781520 Motion sensor for noise cancellation in borehole electromagnetic telemetry system  
An electromagnetic borehole telemetry system providing improved signal to noise ratio. Adaptive filters use noise channels as references to remove noise from the signal channel. Improved sensors...
6741185 Digital signal receiver for measurement while drilling system having noise cancellation  
A method is disclosed for reducing noise in a measured telemetry signal. The method includes tracking a characteristic of at least one harmonic of a noise component in the measured telemetry signal...
6728638 Method of monitoring operations of multiple service vehicles at a well site  
A method of monitoring service operations performed on a well involves creating, directly at the well site, a cohesive report of what work was done to the well and which of several contractors did...
6657597 Directional signal and noise sensors for borehole electromagnetic telemetry system  
An electromagnetic borehole telemetry system providing improved signal to noise ratio. Adaptive filters use noise channels as references to remove noise from the signal channel. Directional...
6577244 Method and apparatus for downhole signal communication and measurement through a metal tubular  
Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in...
6538576 Self-contained downhole sensor and method of placing and interrogating same  
The present invention provides a self-contained sensor module for use in a subterranean well that has a well transmitter or a well receiver associated therewith. In one embodiment, the sensor...
6531871 Extension assembly for an electromagnetic antenna and method of connection  
An electromagnetic antenna extension assembly for connection downhole into a pipe string between a data transmission unit and an electromagnetic antenna. Further, a method for connecting the data...
Matches 1 - 50 out of 145 1 2 3 >