Matches 1 - 49 out of 49


Match Document Document Title
9007231 Synchronization of distributed measurements in a borehole  
A system and method to synchronize distributed measurements in a borehole are described. The system includes a plurality of wired segments coupled together by couplers and a plurality of nodes...
8928488 Signal propagation across gaps  
In some embodiments, an apparatus and a system, as well as a method and an article, may operate to monitor a first condition associated with transmitting or receiving a signal in a formation or on...
8378842 Downhole component with an electrical device in a blind-hole  
A downhole tool string component has a through-bore intermediate first and second tool joints adapted for connection to adjacent tool string components. A blind-hole is formed in an outer surface...
8149132 System and method for hard line communication with MWD/LWD  
A MWD/LWD hard line communication system and method includes for the system a cartridge capable of deploying wire in a borehole, a screen attachable to the cartridge and positionally retainable in...
8130118 Wired tool string component  
A system is disclosed as having first and second tubular tool string components. Each component has a first end and a second end, and the first end of the first component is coupled to the second...
8094516 Method and device for the time-serial transmission of reception signals of electroacoustic transducers  
A method for the time-serial transmission of received signals of electroacoustic transducers (11), which are placed at different transducer locations (13) of a spatially spread receive arrangement...
8072347 Method and apparatus for locating faults in wired drill pipe  
A method for determining electrical condition of a wired drill pipe includes inducing an electromagnetic field in at least one joint of wired drill pipe. Voltages induced by electrical current...
7741958 Network cable for transmitting data and power to networked devices  
The present technique relates to the distribution of power and data signals throughout a networked system. For example, three-phase power may be conducted to a device over a set of conductors. One...
7652592 Data transmission device  
The device relates to an installation comprising a cavity extending from the surface of the ground and provided with at least one electrically conductive tubular element. The device comprises a...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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.
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...
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...
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...
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...
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...
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...
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...
3928841 Well logging system using single conductor cable  
The present invention pertains to well logging and specifically to a system adapted for use with inexpensive cables consisting of a single conductor sheathed in a smooth insulating jacket.
3918537 Apparatus for maintaining an electric conductor in a drill string  
An apparatus for maintaining an electric conductor within a drill string which includes upper and lower guides, an electric conductor extending from a subsurface instrument around said upper and...
3904840 Wellbore telemetry apparatus  
An apparatus having coiled conductor stored therein is used in a wellbore telemetry system. The telemetry system permits the monitoring of a subsurface condition as drilling proceeds. The...
3807502 METHOD FOR INSTALLING AN ELECTRIC CONDUCTOR IN A DRILL STRING  
A method for installing an electric conductor in a drill string during drilling operations wherein an insulated electric conductor is lowered into the drill string and thereafter the drill string...
3789936 METHOD AND APPARATUS FOR SIMULTANEOUSLY DRILLING AND LOGGING  
Method and apparatus for simultaneously drilling and logging a bore hole employing an electric cable extending through a drill string which has a swivel at the top end and a bit secured to its...
3657694 DATA INSERTION SYSTEM  
The particular embodiment described herein as illustrative of one form of the invention utilizes an instrument system for detecting parameters of borehole conditions and storing data bits...
3368195 Method of and apparatus for producing and transmitting borehole signals  
3309657 Dual channel well logging system  
3102992 Simultaneous plural spacing acoustical logging  
3068447 Bridge measurement of high borehole resistance  
2986693 Electrical logging system  
2974303 Electrical systems for borehole apparatus  
2936614 System for measurement of fluid flow dependent forces  

Matches 1 - 49 out of 49