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| Number | Title | Issue Date |
| 7382273 | Wired tool string component An apparatus is disclosed as having a downhole string component having first and second ends. The first end has first and second signal couplers, and the second end has third and fourth signal couplers. An electrical conductor is in electrical communication with the... | 06/03/2008 |
| 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 |
| 7209407 | Seismic data acquisition system A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lin... | 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 |
| 7096961 | Method and apparatus for performing diagnostics in a wellbore operation A wired drill pipe telemetry system includes a surface computer; and a drill string telemetry link comprising a plurality of wired drill pipes each having a telemetry section, at least one of the plurality of wired drill pipes having a diagnostic module electrically... | 08/29/2006 |
| 6950034 | Method and apparatus for performing diagnostics on a downhole communication system A method for performing diagnostics on a wired drill pipe telemetry system of a downhole drilling system is provided. The method includes passing a signal through a plurality of drill pipe in the wired drill pipe (WDP) telemetry system, receiving the signal from the... | 09/27/2005 |
| 6843119 | Apparatus for measuring and recording data from boreholes For collecting data from a water well, down-hole sensors are housed in modules. The modules are arranged to be screwed together in-line to form a vertical string. Mechanically, the modules are secured to each other only by the screw connection. Data is transmitted t... | 01/18/2005 |
| 6501996 | Process automation system A process automation system includes terminals for operating and monitoring purposes, automation devices for executing control functions, and a host computer. Communication between the terminals and the automation devices is exclusively established via th... | 12/31/2002 |
| 6396414 | Retractable electrical/optical connector A down-hole tool includes a first and second portion that are moveable relative to one another, but are electrically coupled together. A rigid tube formed into a helical coil extends between the first and second portions. The helical coil is expandable an... | 05/28/2002 |
| 6392561 | Short hop telemetry system and method The invention relates to a data transmission or telemetry system and a method for communicating information axially along a drill string. The method includes the step of conducting an axial electrical signal embodying the information between a first axial... | 05/21/2002 |
| 6158276 | Apparatus for measuring and recording data from boreholes For collecting data from a water well, down-hole sensors are housed in modules. The modules are arranged to be screwed together in-line to form a vertical string. Mechanically, the modules are secured to each other only by the screw connection. Data is tr... | 12/12/2000 |
| 5747750 | Single well system for mapping sources of acoustic energy Apparatus and method for determining the location of the source of seismic energy around a well are provided. Multiple seismic receivers, each receiver having orthogonal seismic sensors, are axially spaced on a tool which is capable of sending real-time s... | 05/05/1998 |
| 5670931 | Method and apparatus for transmitting data over a power cable utilizing a magnetically saturable core reactor The present invention impresses the data on the power signal by utilizing a saturable core reactor. The saturable core reactor uses two cores. Each core has both load windings and control windings. The control windings are selectively energized to alter a... | 09/23/1997 |
| 5589825 | Logging or measurement while tripping A method and apparatus are provided for obtaining measurements from a wellbore during tripping operations. A drilling sub is attached to the drillstring adjacent to or as near as possible to the drillbit before commencing normal drilling operations. Prior... | 12/31/1996 |
| 5521592 | Method and apparatus for transmitting information relating to the operation of a downhole electrical device A method and apparatus for transmitting information relating to the operation of an electrical device disposed in a borehole, in which information picked up by at least one downhole sensor is conveyed to surface reception means via the wire connection con... | 05/28/1996 |
| 5119089 | Downhole seismic sensor cable A metallic down hole seismic sensor cable for operating at temperatures up to about 400° F. and pressures up to about 5000 psig is provided. The seismic sensor cable includes a flexible metallic conduit sized for receiving a seismic sensor, and means for... | 06/02/1992 |
| 4828051 | Method and apparatus for data transmission in a well using a flexible line with stiffener A method and means is provided for receiving and passing data up hole to the top (22) of a well bore (20a) while passing fracturing fluid (54,60) down hole to a geological formation (44) at a zone (29) in the well bore. A flexible line (36) has suspended ... | 05/09/1989 |
| 4808996 | Simultaneous digitizing apparatus for an acoustic tool For use in an acoustic logging tool, an apparatus which digitizes simultaneously obtained acoustic signals is set forth in the preferred and illustrated embodiment. The device cooperates with N acoustic receivers in a sonde. After an acoustic pulse is tra... | 02/28/1989 |
| 4806928 | Apparatus for electromagnetically coupling power and data signals between well bore apparatus and the surface In the representative embodiment of the new and improved apparatus disclosed herein, a downhole tool adapted to be coupled in a pipe string and positioned in a well bore is provided with one or more electrical devices cooperatively arranged to receive pow... | 02/21/1989 |
| 4790380 | Wireline well test apparatus and method An improved technique for monitoring subterranean formation test data is provided utilizing an electric wireline to transmit data in real time from sensors positioned downhole in a test string to surface computing and readout equipment. The electrical con... | 12/13/1988 |
| 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 to a high frequency level, amplifies the high frequency si... | 09/01/1987 |
| 4605268 | Transformer cable connector Connectors for electrically coupling conductors wherein the connection is effected by current coupling are disclosed. Each connector includes a toroidal coil and a housing member. The connection is accomplished by aligning the toroidal coils generally par... | 08/12/1986 |
| 4541481 | Annular electrical contact apparatus for use in drill stem testing In accordance with an illustrative embodiment of the present invention, a full bore drill stem testing system includes a tubular housing suspended in a well on a pipe string and having an open bore therethrough. An annular electrical contact sleeve is mou... | 09/17/1985 |
| 4450539 | Apparatus for measuring the relative position of a downhole tool in a bore hole An apparatus for accurately determining the relative positioning of a well logging sonde or downhole tool in a bore hole is disclosed. The apparatus comprises an anchor for engaging the wall of the bore hole in fixed position and adapted to be carried int... | 05/22/1984 |
| 4415895 | Well logging data transmission system A telemetering system provides improved cable utilization and bi-directional digital communication between a logging sonde and surface electronics over a single balanced transmission line of a multi-conductor logging cable, with significant signal crossta... | 11/15/1983 |
| 4304451 | Interconnection technique for downhole instrumentation Multiple electrical connections between circuits in axially displaced housings are made by mounting the connectors so that they are at right angles to the axis of the housings.... | 12/08/1981 |
| 4282523 | Method and apparatus for logging inclined earth boreholes An improved technique is provided for comparing the velocity of an elongated well logging instrument traversing an inclined earth borehole with the playout velocity of the well logging cable at the earth's surface to control both the cable hoist drum rota... | 08/04/1981 |
| 4227405 | Digital mineral logging system A digital mineral logging system acquires data from a mineral logging tool passing through a borehole and transmits the data uphole to an electronic digital signal processor. A predetermined combination of sensors, including a deviometer, is located in a ... | 10/14/1980 |
| 4220381 | Drill pipe telemetering system with electrodes exposed to mud A drill string telemetry system of the hard-wired type wherein a separate conductor extends through each section of the drill pipe. The conductor is connected to connectors located in the ends of the drill pipe with the connectors completing the electrica... | 09/02/1980 |
| 4130169 | Downhole connector for use with drill string telemetering system A remotely operated connector for electrically and mechanically coupling a wireline to a connector located at the bottom of a drill string. The connector includes a spring-actuated jar that facilitates the release of the connector.... | 12/19/1978 |
| 4095865 | Telemetering drill string with piped electrical conductor An improved pipe section for use in a telemetering drill string in which each pipe section contains an insulated electrical conductor extending between insulated electrical connectors in the pipe joints. The improvement comprises encasing the conductor an... | 06/20/1978 |
| 4051456 | Apparatus for establishing and maintaining electric continuity in drill pipe Apparatus for use in a rotary drill string to maintain electric continuity therethrough includes an externally insulated electric conductor tube having an electric cable mounted therein. The cable is telescopically movable with respect to the tube, and it... | 09/27/1977 |
| 4035763 | Wireline tool for measuring bottom-hole pressure in pumping wells A data transmission system for use in transmitting data from a well to a surface location. The well data is converted to a voltage and used to control the frequency of an oscillator whose output frequency is transmitted to the surface. At the surface a se... | 07/12/1977 |
