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7605716 |
Telemetry system with an insulating connector
The present invention provides an electromagnetic telemetry apparatus and methods that include an insulating connector that comprises an outer metallic female member that has an inner conical...
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7603238 |
Analysis of time-series data using singularities
A method for acquiring and analyzing time-series data using singularities is described. This method allows for the analysis of data over a wide spectrum of frequencies. Once the data is acquired in...
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7580797 |
Subsurface layer and reservoir parameter measurements
Method and system for determining a characteristic of a subsurface formation traversed by a wellbore. A fluid flow rate in the wellbore is established, the flow being associated with fluid movement...
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7561997 |
Simulation system including a simulator and a case manager adapted for organizing data files for the simulator in a non-conventional tree like structure
A simulation system includes a case manager adapted for organizing and managing a plurality of sets of input data being used by the simulation system. The case manager includes a plurality of case...
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7551516 |
Vertical seismic profiling method utilizing seismic communication and synchronization
A while-drilling Vertical Seismic Profiling (VSP) data acquisition system utilizing the same seismic shots for three purposes is disclosed. First, the seismic shots provide a means for...
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7535795 |
Seismic data acquisition system and method for downhole use
A method and system for conducting a seismic survey by lowering a string of intelligent clampable sensor pods with 3-C sensors into a borehole. The string of pods is serially interconnected by a...
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7518528 |
Electric field communication for short range data transmission in a borehole
The present invention concerns application of a unique conductive electrode geometry used to form an efficient wideband, one- or two-way wireless data link between autonomous systems separated by...
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7489591 |
Drilling fluid pressure pulse detection using a differential transducer
An apparatus for detecting mud pulse telemetry signals includes a differential transducer. In various exemplary embodiments, a high-pressure side of the differential transducer is in fluid...
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7453768 |
High-speed, downhole, cross well measurement system
In one aspect of the invention, a high-speed measurement system has a first and a second well bore. A first and second plurality of network nodes is integrated into and spaced at intervals along...
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7417920 |
Reciprocating pulser for mud pulse telemetry
A method of transmitting pressure pulses from a downhole location through a flowing fluid in a wellbore comprises using a linear actuator to controllably move a reciprocating member axially back...
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7400262 |
Apparatus and methods for self-powered communication and sensor network
A system for communicating between a first location and a second location comprises a jointed tubular string having a first section and a second section connected at a connection joint, with the...
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7397388 |
Borehold telemetry system
A system that is usable with a subterranean well includes an assembly and a telemetry tool. The system includes an assembly that performs a downhole measurement. The system also includes a downhole...
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7348893 |
Borehole communication and measurement system
A technique that is usable with a well includes using at least one downhole sensor to establish telemetry within the well. The sensor(s) are used as a permanent sensing device.
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7339494 |
Acoustic telemetry transceiver
One embodiment includes an apparatus that includes a piezoelectric transducer to generate an acoustic signal that is to modulate along a mandrel, wherein the piezoelectric transducer includes at...
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7317989 |
Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data
The present invention provides a chemometric equation to estimate fluid density, viscosity, dielectric constant and resistivity for a formation fluid sample downhole. The chemometric estimates can...
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7301472 |
Big bore transceiver
In a subterranean well completion a bi-directional signal transmission system includes an in-line acoustic transceiver mounted in a tubing string extending through the wellbore, the transceiver...
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7283060 |
Control apparatus for automated downhole tools
A method and apparatus for a computer controlled apparatus for use in wellbore completions. A touch-screen is provided that facilitates commands and information that is entered by an operator...
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7280432 |
Oscillating shear valve for mud pulse telemetry
An oscillating shear valve system for generating pressure fluctuations in a flowing drilling fluid comprising a stationary stator and an oscillating rotor, both with axial flow passages. The rotor...
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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...
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7265682 |
Joint source-channel coding for multicarrier modulation
Methods and systems employing combined source-channel coding for multi-carrier modulation (MCM). In some embodiments, a described method comprises: estimating channel gain to noise ratio (CGNR) as...
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7250873 |
Downlink pulser for mud pulse telemetry
A mud pulse telemetry system comprises a surface located fluid supply line having a drilling fluid flowing therein. A non-venting pulser is disposed in the drilling fluid in the supply line, and...
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7230543 |
Downhole clock synchronization apparatus and methods for use in a borehole drilling environment
Geophysical measurement system employed during the drilling of a well borehole. The system employs a reference clock disposed within equipment at the surface of the earth and a borehole assembly...
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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...
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7158446 |
Directional acoustic telemetry receiver
Acoustic telemetry devices and methods that provide directional detection. In one embodiment, a disclosed acoustic telemetry device comprises at least two acoustic sensors and an electronics...
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7145472 |
Method and apparatus for high speed data dumping and communication for a down hole tool
The present invention provides a high-speed communication and data link between a downhole tool and a surface computer. The present invention provides a plurality of busses inside of the downhole...
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7061830 |
Transducers coated with anechoic material for use in down hole communications
A communication device is located within a well and includes a transducer that converts a first electrical signal into a first acoustic signal for transmission through the well and that converts...
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6990045 |
Methods for acquiring seismic data while tripping
A method is described for acquiring seismic data while removing, or tripping, a drill string from a wellbore. The method comprises, conveying an autonomous seismic receiver down a fluid passage in...
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6941464 |
Method and logic for capturing and analyzing conduit data
A method of locking data and a program that analyzes the data commences with a generation of a first key. This first key is associated with both the data and a specific, compiled copy of the...
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6912177 |
Transmission of data in boreholes
Data is transmitted along a borehole containing a drill stem ( 2 ) by means of a transmitter ( 6 ) which converts electric data signals to acoustic signals propagating along the drill stem ( 2 )....
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6909666 |
Method and apparatus for generating acoustic signals for LWD shear velocity measurement
An acoustic logging apparatus comprises a drill collar conveyed on a drilling tubular in a borehole within a formation. At least one transmitter is disposed in the drill collar. The transmitter...
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6898150 |
Hydraulically balanced reciprocating pulser valve for mud pulse telemetry
A reciprocating pulser system for generating pressure fluctuations in a flowing drilling fluid comprising a reciprocating poppet and a stationary valve assembly with axial flow passages. The poppet...
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6898149 |
Reprogrammable downhole telemetry and control system
A reprogrammable data communications system for use in a gas or oil well borehole is disclosed. The borehole includes a casing and a piping structure therein and at least one downhole equipment...
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6880634 |
Coiled tubing acoustic telemetry system and method
System, apparatus, and method of telemetering downhole sensor information to the surface while operations are performed in an oil or gas well using coiled tubing. Data are transmitted on coiled...
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6837332 |
Method and apparatus for cancellation of unwanted signals in MWD acoustic tools
An apparatus ( 10 ) and method are disclosed for eliminating a noise signal from at least one source during an acoustic measurement of a subsurface geological formation or borehole. The apparatus (...
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6801135 |
Webserver-based well instrumentation, logging, monitoring and control
Apparatus and methods for webserver-based well instrumentation, logging, monitoring and control provide convenience and economy in well site and off-site operations. In a described embodiment, a...
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6791470 |
Reducing injection loss in drill strings
A system and method for transferring wave energy into or out of a periodic structure having a characteristic wave impedance profile at a prime frequency, the characteristic wave impedance profile...
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6768700 |
Method and apparatus for communications in a wellbore
A downhole string includes a system having an actuator module that is responsive to electrical power and signals communicated down a cable, such as a permanent downhole cable (PDC). In addition, a...
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6697298 |
High efficiency acoustic transmitting system and method
The present invention includes a well system having a sensor; a controller for converting the sensor output, a signal conducting mass, a magnetostrictive actuator for inducing an acoustic wave the...
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6643221 |
Structures and methods for damping tool waves particularly for acoustic logging tools
In one aspect, the invention involves an acoustic logging tool for performing acoustic investigations of subsurface geological formations. In one embodiment, the tool comprises a generally...
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6540019 |
Intelligent thru tubing bridge plug with downhole instrumentation
A conventional thru tubing bridge plug is rendered in a more effective and useful downhole tool by incorporating a sensor module complete with preferably a plurality of downhole sensors to monitor...
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6535458 |
Method and apparatus for suppressing drillstring vibrations
Apparatus and methods are described for isolating in a drillstring a device from acoustic noise by introducing between the device and a source of acoustic vibration an noise isolating apparatus,...
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6478090 |
Method and apparatus of operating devices using actuators having expandable or contractable elements
An apparatus and method of operating devices (such as devices in a wellbore or other types of devices) utilizes actuators having expandable or contractable elements. Such expandable or contractable...
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6480118 |
Method of drilling in response to looking ahead of drill bit
A method for improving ROP and reducing hazards in drilling subterranean wells by using an acoustical system 15 to look ahead of the drill bit 14, detects and analyzes geologic features ahead...
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6434084 |
Adaptive acoustic channel equalizer & tuning method
A method and apparatus for data communication in an oil well environment, wherein the method comprises detecting an acoustic signal transmitted along an acoustic channel, the acoustic signal being...
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6405136 |
Data compression method for use in wellbore and formation characterization
A method is disclosed for compressing a frame of data representing parameter values, a time at which each parameter value was recorded, and an orientation of a sensor at the time each parameter...
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6262941 |
Method and device for seismic prospecting using a drilling tool acting in a well
This invention is a method of conducting seismic prospecting operations using a drilling tool (1) acting at the bottom of a well (2), which creates very powerful seismic vibrations, transmitting...
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6208265 |
Electromagnetic signal pickup apparatus and method for use of same
An electromagnetic pickup apparatus (46) and method for use of the same is disclosed. The apparatus (46) comprises a probe (60) that is insertable into a bore hole (64) or a trench (70) and a...
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6177882 |
Electromagnetic-to-acoustic and acoustic-to-electromagnetic repeaters and methods for use of same
A downhole communications system including an electromagnetic-to-acoustic signal repeater (35) for communicating information between surface equipment and downhole equipment and a method for use of...
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6137747 |
Single point contact acoustic transmitter
The invention is an acoustic transmitter that imparts vibratory stresses onto a signal propagation medium such as oil well tubing when actuated by an electric driver. In one embodiment, the...
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6094401 |
Inverse vertical seismic profiling using a measurement while drilling tool as a seismic source
A reverse VSP system is provided and uses a frequency-controllable modulator of an MWD tool as a downhole seismic source. The modulator has a rotor and stator arranged to provide substantially...
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