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| Number | Title | Issue Date |
| 7649475 | Tool string direct electrical connection A downhole electrical transmission system having first and second tubular bodies coupled together by mating threads, each tubular body having a bore. An electrical conductor assembly is disposed within the bore of each tubular body. At least one end of each assembly... | 01/19/2010 |
| 7554458 | Downhole communication Methods of and apparatus for a downhole communication in a well. The well has a metallic structure which includes an insulated metallic, fluid carrying, control line. The method comprises the steps of applying signals to the control line at a first location and extr... | 06/30/2009 |
| 7528736 | Loaded transducer for downhole drilling components A system for transmitting information between downhole components has a first downhole component with a first mating surface and a second downhole component having a second mating surface configured to substantially mate with the first mating surface. The system als... | 05/05/2009 |
| 7420475 | Well site communication system A well site communication system for providing communication from downhole devices to surface systems and from surface system to downhole systems, and methods of using are presented. The communication system is particularly applicable for use with spooled conveyance... | 09/02/2008 |
| 7413021 | Method and conduit for transmitting signals An expandable tubular sleeve having utility for lining a downhole tubular member includes a tubular body having a portion that is predisposed to initiate expansion thereof under the application of internal fluid pressure. The predisposed portion of the body may be a... | 08/19/2008 |
| 7347283 | Using a rotating inner member to drive a tool in a hollow outer member A rotating inner member is used to drive a downhole tool housed within the hollow outer member of a dual-member drill string. The downhole tool preferably will be adapted to receive rotational energy from the inner member. In a preferred embodiment, the downhole too... | 03/25/2008 |
| 7348894 | Method and apparatus for using a data telemetry system over multi-conductor wirelines A data telemetry system for multi-conductor wirelines to enhance transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a first terminal of a data re... | 03/25/2008 |
| 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 portion of the surface of the pipeline. The conductive bus includes a ... | 01/29/2008 |
| 7322410 | Controllable 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 |
| 7319410 | Downhole transmission system A transmission system in a downhole component comprises a data transmission element in both ends of the downhole component. Each data transmission element houses an electrically conducting coil in a MCEI circular trough. An electrical conductor connects both the tra... | 01/15/2008 |
| 7312720 | Multi-loop transmission system A transmission system between a voltage source and a wireline tool comprising a first loop to transmit a signal between the voltage source and the wireline tool. The first loop has a first transformer coupled to the voltage source. The system also comprises a second... | 12/25/2007 |
| 7281592 | Injecting a fluid into a borehole ahead of the bit A method and system for introducing a fluid into a borehole, in which there is arranged a tubular drill string including a drill bit, wherein the drill bit is provided with a passageway between the interior of the drill string and the borehole, and with a removable ... | 10/16/2007 |
| 7280607 | Ultra wide bandwidth communications method and system An ultra wide bandwidth, high speed, spread spectrum communications system uses short wavelets of electromagnetic energy to transmit information through objects such as walls or earth. The communication system uses baseband codes formed from time shifted and inverte... | 10/09/2007 |
| 7277026 | Downhole component with multiple transmission elements A tubular component in a downhole tool string has a first end and a second end. The first end includes first and second inductive couplers, and the second end includes third and fourth inductive couplers. The component further has a first conductive medium and secon... | 10/02/2007 |
| 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 detectors provide a signal channel with reduced noise content and improved n... | 09/11/2007 |
| 7261162 | Subsea communications system A subsea communications module includes an interface to communicate with a surface facility over a communications link using a packet-based protocol. The communications link can be implemented with a fiber optic line, wire-based line, and/or other types of communica... | 08/28/2007 |
| 7259689 | Transmitting power and telemetry signals on a wireline cable A wireline logging assembly includes a cable having primary conductors, secondary conductors, and a central conductor. A first power source excites the primary conductors using a first propagation mode. A first telemetry transceiver excites the primary conductors us... | 08/21/2007 |
| 7259688 | Wireless 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 |
| 7253671 | Apparatus and method for compensating for clock drift in downhole drilling components A precise downhole clock that compensates for drift includes a prescaler configured to receive electrical pulses from an oscillator. The prescaler is configured to output a series of clock pulses. The prescaler outputs each clock pulse after counting a preloaded num... | 08/07/2007 |
| 7248177 | Down hole transmission system A transmission system in a downhole component comprises a data transmission element in both ends of the downhole component. Each data transmission element houses an electrically conducting coil in a MCEI circular trough. The electrically conducting coil comprises at... | 07/24/2007 |
| 7248178 | 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 frequency signals. The radio frequency signals may be impressed on the power ... | 07/24/2007 |
| 7234410 | Buoyancy control systems for tubes A buoyancy control system for controlling the buoyancy of a tube may includes generally tubular length of buoyancy control material having a selected buoyancy characteristic. The length of buoyancy control material may be attached to a section of the length of the t... | 06/26/2007 |
| 7230541 | High speed communication for measurement while drilling A communication system for communication with a downhole tool comprising: a first communication transceiver in a first tool for measurement while drilling and a second communication transceiver in at least one of the first tool, a second tool for measurement while d... | 06/12/2007 |
| 7224288 | Link module for a downhole drilling network A repeater is disclosed in one embodiment of the present invention as including a cylindrical housing, characterized by a proximal end and a distal end, and having a substantially cylindrical wall, the cylindrical wall defining a central bore passing therethrough. T... | 05/29/2007 |
| 7219747 | Providing a local response to a local condition in an oil well A method and apparatus for providing a local response to a local condition in an oil well are disclosed. A sensor is provided to detect a local condition in a drill string. A controllable element is provided to modulate energy in the drill string. A controller is co... | 05/22/2007 |
| 7219730 | Smart cementing systems The present invention provides methods and apparatus for determining the location of an apparatus in a wellbore. The method includes lowering the apparatus with a conveying member and measuring a parameter associated with the conveying member. Thereafter, the measur... | 05/22/2007 |
| 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 exposed and a second position in which the magnet is relatively shielded. ... | 05/01/2007 |
| 7207398 | Steerable rotary drill bit assembly with pilot bit A rotary drill bit assembly suitable for directionally drilling a borehole into an underground formation, the drill bit assembly having a bit body extending along a central longitudinal bit-body axis, and having a bit-body face at its front end, wherein an annular p... | 04/24/2007 |
| 7203584 | Multiple-satellite sensors algorithm wake up and reset strategy for an inflatable restraint system An air bag system (12) provides a central controller (14), a multiple of satellite sensors (16) and a multiple of deployable air bags (18). The central controller (14) runs the impact event algorithms. The number of satellites whic... | 04/10/2007 |
| 7188672 | Well string assembly A well string assembly includes an upper tubular well string part having upper and lower ends between which there is formed a passageway, a lower well string part having upper and lower ends, which lower end is spaced apart from the lower end of the upper well strin... | 03/13/2007 |
| 7190280 | Method and apparatus for transmitting and receiving data to and from a downhole tool A transmission line network system for transmitting and/or receiving data from a downhole tool. The invention is achieved by providing one or more transceiving elements, preferably rings, at either end of a downhole tool. A conduit containing a coaxial cable capable... | 03/13/2007 |
| 7180825 | Downhole telemetry system for wired tubing A communications system employing discrete multi-tone (“DMT”) modulated signals on a communications channel formed by inductively-coupled pipe. In one embodiment, the communications system includes a string of wired pipe joints that couple a transmitter to a rec... | 02/20/2007 |
| 7170424 | Oil 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 |
| 7170423 | Electromagnetic MWD telemetry system incorporating a current sensing transformer An electromagnetic telemetry system for transmitting data from a downhole assembly, which is operationally attached to a drill string, to a telemetry receiver system. The data are typically responses of one or more sensors disposed within the downhole assembly. A do... | 01/30/2007 |
| 7165634 | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 01/23/2007 |
| 7163065 | Combined 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 |
| 7158048 | Identically programmed intelligent electrodes for use in geoelectrical surveys Apparatus for conducting geophysical surveys comprising a multiplicity of intelligent electrodes provided on a multi-conductor cable, for receiving a command signal in response to which predetermined electrodes are connected to selected conductors in the cable. Each... | 01/02/2007 |
| 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 terminals of a DC auxiliary power supply. Each loop also couples through a ... | 12/26/2006 |
| 7152632 | Systems and methods for pipeline rehabilitation The present disclosure is directed to methods and systems for pipeline rehabilitation. The methods and systems disclosed herein permit the rehabilitation of long lengths of previously installed pipe and minimize the need for creating multiple access points to the pi... | 12/26/2006 |
| 7154413 | Fused and sealed connector system for permanent reservoir monitoring and production control A connection system is provided for facilitating a downhole electrical reservoir monitoring and/or control system operated by a surface system. The connector system includes a set of fuses and a fuse blowing circuit for isolating a short circuit event and restoring ... | 12/26/2006 |