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| Number | Title | Issue Date |
| 7852232 | Downhole tool adapted for telemetry A cycleable downhole tool such as a Jar, a hydraulic hammer, and a shock absorber adapted for telemetry. This invention applies to other tools where the active components of the tool are displaced when the tool is rotationally or translationally cycled. The inventio... | 12/14/2010 |
| 7696900 | Apparatus for responding to an anomalous change in downhole pressure A method of responding to an anomalous change in downhole pressure in a bore hole comprises detecting the anomalous change in downhole pressure, sending a signal along the segmented electromagnetic transmission path, receiving the signal, and performing a automated ... | 04/13/2010 |
| 7649473 | Physically segmented logical token network Token authorized packet exchange between a plurality of store-and-forward nodes in a downhole networking environment and respective applications for data processing and communication are described herein. ... | 01/19/2010 |
| 7359281 | Read and/or write detection system for an asynchronous memory array This invention provides an asynchronous electronic circuit that has an asynchronous memory circuit where the memory cells are arranged in columns and rows. The asynchronous circuit includes a read completion detection circuit and a write completion detection circuit... | 04/15/2008 |
| 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 |
| 7303029 | Filter for a drill string A filter for a drill string comprises a perforated receptacle having an open end and a perforated end and first and second mounting surfaces are adjacent the open end. A transmission element is disposed within each of the first and second mounting surfaces. A capaci... | 12/04/2007 |
| 7299867 | Hanger mounted in the bore of a tubular component A hanger mounted within a bore of a tubular string component has a split ring, a tapered key and a passageway formed in the hanger. The split ring has interfacial surfaces cooperating with interfacial surfaces of the tapered key. The bore may be located within a tub... | 11/27/2007 |
| 7298287 | Transmitting data through a downhole environment The invention is a system for transmitting data through downhole environments comprising a downhole network integrated into a downhole tool string. The downhole tool string comprises a plurality of downhole components. Each downhole component also comprises a conduc... | 11/20/2007 |
| 7291303 | Method for bonding a transmission line to a downhole tool An apparatus for bonding a transmission line to the central bore of a downhole tool includes a pre-formed interface for bonding a transmission line to the inside diameter of a downhole tool. The pre-formed interface includes a first surface that substantially confor... | 11/06/2007 |
| 7288857 | Self-latching power supply apparatus A self-latching power supply apparatus is disclosed. The apparatus comprises an activation transistor in electrical communication with an input voltage source and a battery-switching transistor. Voltage detection circuitry may be intermediate the input voltage sourc... | 10/30/2007 |
| 7275597 | Remote power management method and system in a downhole network A method for remotely managing downhole power consumption in a downhole network system is disclosed. The method comprises the steps of monitoring an activation state for each of a plurality of individually activatable electrically-powered modules in a downhole devic... | 10/02/2007 |
| 7275594 | Stab guide A tool string stab guide for axially aligning first tool string components with second tool string components is disclosed. The stab guide has a body with an axial length along a longitudinal axis with a first and a second section. The first section of the body adap... | 10/02/2007 |
| 7274304 | System for loading executable code into volatile memory in a downhole tool A system for loading an executable code into volatile memory in a downhole tool string component comprises a surface control unit comprising executable code. An integrated downhole network comprises data transmission elements in communication with the surface contro... | 09/25/2007 |
| 7268697 | Laterally translatable data transmission apparatus A data transmission apparatus having first and second electrical conductors is disclosed. The first and second electrical conductors are disposed within recesses of a first and second complementary surfaces that are magnetically conducting and electrically insulatin... | 09/11/2007 |
| 7261154 | Conformable apparatus in a drill string An apparatus in a drill string comprises an internally upset drill pipe. The drill pipe comprises a first end, a second end, and an elongate tube intermediate the first and second ends. The elongate tube and the ends comprising a continuous an inside surface with a ... | 08/28/2007 |
| 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 contact surfaces providing electrical continuity to the data transmission p... | 08/07/2007 |
| 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 |
| 7243717 | Apparatus in a drill string An apparatus in a drill string comprises an internally upset drill pipe. The drill pipe comprises a first end, a second end, and an elongate tube intermediate the first and second ends. The elongate tube and the ends comprising a continuous an inside surface with a ... | 07/17/2007 |
| 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 |
| 7212040 | Stabilization of state-holding circuits at high temperatures A state-holding circuit having improved stability at high temperatures includes a bi-stable circuit capable of assuming one of two reversible and stable states. The bi-stable circuit comprises a plurality of logic components (e.g., transistors) arranged into two sid... | 05/01/2007 |
| 7207396 | Method and apparatus of assessing down-hole drilling conditions A method and apparatus for use in assessing down-hole drilling conditions are disclosed. The apparatus includes a drill string, a plurality of sensors, a computing device, and a down-hole network. The sensors are distributed along the length of the drill string and ... | 04/24/2007 |
| 7201240 | Biased insert for installing data transmission components in downhole drilling pipe An apparatus for installing data transmission hardware in downhole tools includes an insert insertable into the box end or pin end of drill tool, such as a section of drill pipe. The insert typically includes a mount portion and a slide portion. A data transmission ... | 04/10/2007 |
| 7200070 | Downhole drilling network using burst modulation techniques A downhole drilling system is disclosed in one aspect of the present invention as including a drill string and a transmission line integrated into the drill string. Multiple network nodes are installed at selected intervals along the drill string and are adapted to ... | 04/03/2007 |
| 7198118 | Communication adapter for use with a drilling component A communication adapter is disclosed that provides for removable attachment to a drilling component when the drilling component is not actively drilling and for communication with an integrated transmission system in the drilling component. The communication adapter... | 04/03/2007 |
| 7193527 | Swivel assembly A swivel assembly for a downhole tool string comprises a first and second coaxial housing cooperatively arranged. The first housing comprises a first transmission element in communication with surface equipment. The second housing comprises a second transmission ele... | 03/20/2007 |
| 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 secondary shoulder component retained in the box connection intermediate a fl... | 03/20/2007 |
| 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 |
| 6821147 | Internal coaxial cable seal system The invention is a seal system for a coaxial cable more specifically an internal seal system placed within the coaxial cable and its constituent components. A series of seal stacks including flexible rigid rings and elastomeric rings are placed on load bearing membe... | 11/23/2004 |
| 6799632 | Expandable metal liner for downhole components A liner for an annular downhole component is comprised of an expandable metal tube having indentations along its surface. The indentations are formed in the wall of the tube either by drawing the tube through a die, by hydroforming, by stamping, or roll forming and ... | 10/05/2004 |
