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8077542 |
Determining the inline relationship of network nodes in a subterranean survey data acquistion network
A system includes a subterranean survey data acquisition network and a processor. The network has first nodes that are distributed along a length of the network between a first end of the network...
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8072841 |
Adaptive wavefront reconstruction
A method for generating a synthetic seismogram. In one implementation, a ray tracing may be performed on a subsurface. The ray tracing may generate a plurality of rays. A first seismic wavefront...
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8059018 |
Systems and methods for digital control utilizing oversampling
Methods and systems for digital control utilizing oversampling.
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7970544 |
Method and apparatus for characterizing and estimating permeability using LWD Stoneley-wave data
Stoneley-wave data acquired in the LWD environment are used to characterize/estimate formation permeability. Real-time Stoneley-wave time-delay/slowness and center-frequency/attenuation data are...
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7912649 |
Geophysical surveying
Joint processing of seismic and controlled source electromagnetic (CSEM) surface data is performed by using a common rock physics model which relates reservoir properties (such as porosity,...
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7900700 |
Method and system for cleat characterization in coal bed methane wells for completion optimization
The invention generally relates a method of determining completion criteria for a coal bed methane reservoir having a plurality of coal seams. The method involves obtaining an acoustic log and a...
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7898903 |
Combined probe and corresponding seismic module for the measurement of static and dynamic properties of the soil
A combined probe includes a dilatometer probe, a gas conduit coupled to the dilatometer probe for providing a gas connection between the dilatometer probe and an external gas source, a wire located...
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7881501 |
Local dominant wave-vector analysis of seismic data
The present invention relates to a method and system for processing multi-dimensional signal data to determine frequency dependent features therefrom. The multi-dimensional signal data are...
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7869955 |
Subsurface prediction method and system
A method of predicting subsurface properties of a geologic formation includes acquiring seismic data for a subsurface region including the geologic formation of interest, computing seismic...
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RE41829 |
Nonlinear electroseismic exploration
A method for seismic exploration using nonlinear conversions between electromagnetic and seismic energy, with particular attention to the electromagnetic source waveform used. According to the...
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7797110 |
Method for velocity analysis using waveform inversion in Laplace domain for geophysical imaging
A Laplace transform system comprising a processor, a measured time domain wavefield, a velocity model, and Laplace damping constants, wherein the processor is programmed to calculate a...
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7688673 |
Connector nodes for interrogating optical fiber sensor arrays
Seismic sensor systems and sensor station topologies, as well as corresponding cable and sensor station components, manufacturing and deployment techniques are provided. For some embodiments,...
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7684952 |
Determining density contrast at subsurface interface
Method for subsurface exploration. In one implementation, the method may include receiving a gamma value at a subsurface interface, wherein the gamma value is a ratio of Vp/Vs at the subsurface...
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7680600 |
Method, system and apparatus for formation tester data processing
A method for data processing includes transforming measurement data acquired in the time domain during an oilfield operation into a second domain to produce transformed data; identifying...
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7679993 |
Method of characterizing a fractured reservoir using seismic reflection amplitudes
A method of characterizing a fractured reservoir in a field includes measuring seismic reflection coefficient of the fractured reservoir as a function of angle of incidence and azimuth, predicting...
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7676326 |
VH Reservoir Mapping
A method and system of detecting and mapping a subsurface hydrocarbon reservoir includes determining ratio data for a plurality of orthogonal spectral components of naturally occurring low...
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7660188 |
Seismic exploration and imaging system for producing survey reports of subsea geological structures
The present invention provides a seismic exploration and imaging system for producing seismic survey reports of subsea geological structures. The exploration system provides a method in which both...
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7617053 |
Processing of seismic data using the S-transform
The present invention relates to a method and system for processing seismic data. Seismic data indicative of at least a time-dependent seismic trace are transformed into time-frequency domain using...
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7598884 |
Seismic warning system
The invention relates to a seismic warning system comprising of two or more sensors for detecting shock signals and electronic signal processing elements for processing and analyzing said signals....
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7581446 |
Methods, systems, and computer program products for determining a property of construction material
Methods, systems, and computer program products for determining a property of construction material. According to one aspect, a material property gauge operable to determine a property of...
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7584056 |
Multiple suppression in angle domain time and depth migration
Seismic data may be imaged using or recognizing substantially only primary reflections. Imaging seismic data may include for example integrating a plurality of seismic data points that have...
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7573780 |
Electrode configurations for suppression of electroseismic source noise
Method for survey design including configuring electrodes to reduce near-surface noise in the seismic response from an electroseismic survey of a subterranean formation. Different embodiments of...
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7542851 |
Electromagnetic surveying for hydrocarbon reservoirs
A method of analyzing results from an underwater controlled source electromagnetic (CSEM) survey of an area that is thought or known to contain a subterranean hydrocarbon reservoir is described....
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7418350 |
Method, media, and signals for processing seismic data to obtain a velocity field
A method and apparatus for estimating a seismic velocity field from seismic data including time-amplitude representations associated with source-receiver locations spaced apart by an offset...
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RE40321 |
Remote reservoir resistivity mapping
A method for surface estimation of reservoir properties, wherein location of and average earth resistivities above, below, and horizontally adjacent to the subsurface geologic formation are first...
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7286442 |
Method and apparatus for seismic data acquisition
A marine seismic exploration method and system comprised of continuous recording, self-contained ocean bottom pods characterized by low profile casings. An external bumper is provided to promote...
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7203342 |
Image feature extraction
A method of extracting desired features from a cellular image including the steps of: (a) selecting an initial cell within the image; (b) selecting an additional cell, near the initial cell,...
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7196634 |
Systems for predicting earthquakes and methods of employing such systems
A method of predicting earthquakes includes the step of positioning a first transducer array adjacent to a seismically active region and below the water table, i.e., within the zone of saturation....
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7078619 |
Universal seismic data acquisition module
A universal seismic data acquisition module includes independent environmental isolation chambers for essential signal processing circuitry and for cable connection unions. Cable connection unions...
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7042801 |
System for geophysical prospecting using induce electrokinetic effect
Methods are disclosed employing seismic waves having infrasonic frequencies in the range of about 0.1–20 Hz for generating electromagnetic waves of similar infrasonic frequency in hydrocarbon b...
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7024021 |
Method for performing stratigraphically-based seed detection in a 3-D seismic data volume
The invention is a method for performing a stratigraphically-based seed detection in a 3-D seismic data volume. The method incorporates criteria that honor the layered nature of the subsurface so...
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6891733 |
Seismic data acquisition module
A seismic data acquisition module includes a motherboard that is environmentally protected as a independent unit by an integral sheath, envelope or encapsulating cover. The motherboard unit is...
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6883638 |
Accelerometer transducer used for seismic recording
Method for operating and testing a sensor assembly (210). The sensor assembly (210) preferably includes accelerometers with axes of sensitivity orthogonal to each other. The method preferably...
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6859416 |
Apparatus and method for analyzing correlation between geophysical data and seismic data, geophysical data monitoring apparatus and method, and earthquake monitoring method
The present invention relates to an apparatus and a method for analyzing the correlation geophysical data and seismic data, physical data monitoring apparatus and method, and an earthquake...
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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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6823963 |
Seismic wave measuring devices
The invention provides an instrument suitable for measuring seismic waves in an environment which comprises a wave guide through which a seismic wave may propagate substantially without dispersion...
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6728165 |
Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors
A system for sensing subterranean acoustic waves emitted from an acoustic source includes a plurality of laser sources, a plurality of subterranean optical sensors, at least one optical detector,...
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6691075 |
Method for modeling seismic acquisition footprints
A model seismic image of a subsurface seismic reflector is constructed, wherein a set of source and receiver pairs is located, and a subsurface velocity function is determined. Specular reflection...
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6664788 |
Nonlinear electroseismic exploration
A method for seismic exploration using nonlinear conversions between electromagnetic and seismic energy, with particular attention to the electromagnetic source waveform used. According to the...
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6595285 |
Method and device for emitting radial seismic waves in a material medium by electromagnetic induction
A method and device for emitting radial seismic waves in a material medium by electromagnetic induction, used notably for generating seismic waves in cased or uncased wells or in a water mass is...
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6588980 |
Underwater cable deployment system and method
An underwater cable deployment system includes a series of cables, pre-wound on a set of reels, disposed upon a pallet and connected to a distribution hub on the pallet. The pallet is lowered to...
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6587055 |
Simultaneous triggering of remote units
In a remote data acquisition system a control unit transmits a radio signal simultaneously to a plurality of remote units. Each remote unit receives the radio signal at different times dependent on...
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6573855 |
Three-dimensional questing method, three-dimensional voxel data displaying method, and device therefor
In a three-dimensional exploring method for finding location of a buried object by transmitting a wave signal (4) by means of e.g. an electromagnetic wave into the ground (1) and receiving the...
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6476608 |
Combining seismic waves with seismoelectrics to perform prospecting and measurements
A method and apparatus for low cost, convenient prospecting and surveys of subsurface structures using seismoelectric signals, as well as laboratory analysis of geological samples. The...
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6462549 |
Method and system for electroseismic monitoring of microseismicity
A method and system for determining the location of a microseismic event is disclosed. An electromagnetic sensor measures the electromagnetic energy which is caused by a microseismic event. Seismic...
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6208585 |
Acoustic LWD tool having receiver calibration capabilities
A sonic or acoustic tool having a transmitter and a receiver and further having a receiver testing and calibration device is disclosed. Methods for testing and tuning acoustic receivers dynamically...
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6194706 |
Methods and systems for locating buried fiber optic cables
The invention provides for assessing location and/or proximity to a buried or submerged optical fiber cable. A seismic generator creates seismic pulses, at known frequencies, on the ground (or...
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6076630 |
Acoustic energy system for marine operations
A marine seismic source for generating acoustic source energy. A housing has a continuous exterior perimeter which is moveable to displace water. Movement of the housing can be accomplished by...
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6065562 |
System for imparting compressional and shear waves into the earth
A seismic vibrator system for imparting compressional and shear wave vibrations into the earth has an earth contacting base with a vertical post. A tubular hub is slidably received on the post in a...
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6038512 |
Method and system for estimating earth environmental effects in relation to planetary orbital dynamics
This method and system for estimating Earth environmental effects in relation to planetary orbital dynamics provides for integrating seemingly diverse data input sources gathered from historical...
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