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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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....
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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.
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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.
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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...
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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 apparatus...
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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...
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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...
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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...
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3368195 |
Method of and apparatus for producing and transmitting borehole signals
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3309657 |
Dual channel well logging system
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3102992 |
Simultaneous plural spacing acoustical logging
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3068447 |
Bridge measurement of high borehole resistance
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2986693 |
Electrical logging system
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2974303 |
Electrical systems for borehole apparatus
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2936614 |
System for measurement of fluid flow dependent forces
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