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7616523 Method for combining pressure and motion seismic signals from streamers where sensors are not at a common depth  
A method for using signals measured by pressure responsive seismic sensors and motion responsive seismic sensors disposed in a seismic cable includes simulating a selected range frequency response...
7554881 Determining seawater conductivity for the compensation of electromagnetics-based survey data  
A technique includes obtaining seismic data, which was acquired during a seismic survey in seawater. The technique includes based on the seismic data, determining a conductivity of the seawater and...
7551515 Source signature deconvolution method  
A method of filtering seismic signals is described using the steps of obtaining the seismic signals generated by activating a seismic source and recording signals emanating from the source at one...
7505361 Method for prediction of surface related multiples from marine towed dual sensor seismic streamer data  
Particle motion sensor signals and the pressure sensor signals data from a towed marine seismic streamer are combined to generate an up-going pressure wavefield component and a down-going particle...
7502690 System and method for using time-distance characteristics in acquisition, processing, and imaging of t-CSEM data  
There is provided herein a system and method of acquiring, processing, and imaging transient Controlled Source ElectroMagnetic (t-CSEM) data in ways that are similar to those used for seismic data....
7489590 Method and apparatus for source and receiver side wave field separation  
The present invention provides a method and apparatus for wave field separation. The method includes accessing a marine seismic data set acquired by a plurality of receivers deployed at a first...
7426439 Method and apparatus for marine seismic data acquisition  
The present invention provides a method and apparatus for seismic data acquisition. One embodiment of the method includes accessing data acquired by at least two particle motion sensors. The data...
7382682 Processing seismic data  
The invention relates to processing seismic data that contains both a desired signal and swell noise. The method is applicable to seismic data is in the frequency-space domain method and comprises...
7372769 Method and apparatus for adaptive over/under combination of seismic data  
The present invention provides a method and apparatus for wave field separation. The method includes determining a first operator using marine seismic data acquired at a first depth and receivers...
7359283 System for combining signals of pressure sensors and particle motion sensors in marine seismic streamers  
Signals of pressure sensors and particle motion sensors located in marine seismic streamers are combined to generate pressure sensor data and particle motion data with substantially the same broad...
7336561 System for attenuation of water bottom multiples in seismic data recorded by pressure sensors and particle motion sensors  
An up-going wavefield and a down-going wavefield are calculated at a sensor position from a pressure sensor signal and a particle motion sensor signal. Then, an up-going wavefield is calculated at...
7333392 Method for estimating and reconstructing seismic reflection signals  
A method for reconstructing seismic data signals of poor quality to improve the signal-to-noise ratio of the data for display and analysis in connection with the selection of drilling sites for...
7321526 Method and apparatus for water velocity decomposition  
The present invention provides a method for analyzing traces collected along a plurality of adjacent sail lines in a marine seismic survey area. The method comprises selecting a plurality of trace...
7319636 Calibration of pressure gradient recordings  
A method for computing a pressure signal gradient. The method includes recording a plurality of pressure signals at least one of a first receiver and a second receiver. The first receiver and the...
7315486 Library of velocity dependent extended spread-spectrum codes  
A method and apparatus is provided for determining a propagation time delay. The apparatus includes at least one source adapted to generate a plurality of positioning signals, at least one receiver...
7252174 Downhole seismic-sonic receiver  
A downhole tool for gathering formation data from inside a borehole includes a substantially tubular housing adapted for axial connection to a drill string and multiple sensors coupled to the...
7218890 Seismic telemetry system  
A system for remotely controlling, acquiring and monitoring the acquisition of seismic data. The system includes remote equipment for collecting seismic data and for transmitting and receiving...
7164619 Method of processing marine seismic data and a method of seismic surveying  
A method of determining seismic properties of a layer of the seabed, in particular a surface or near-surface layer ( 5 ), comprises directing seismic energy propagating in a first mode at a...
7130242 System and method for detecting an acoustic signal in the presence of flow noise  
A system and method are provided for detecting an acoustic signal in the presence of flow noise produced by the turbulent flow field that develops about a hosewall of a towed array. Pressure is...
7123543 Method for seismic exploration utilizing motion sensor and pressure sensor data  
A method is disclosed for deghosting seismic data. The data include measurements of a vertical component of particle motion and pressure. The measurements are substantially collocated and made at a...
7120087 Electronics-carrying module  
An electronic-carrying module ( 640 ), for example for use with a seismic data acquisition cable ( 400 ), is disclosed. The preferred electronic-carrying module ( 640 ) includes, first, an...
7113448 Water bottom cable seismic survey cable and system  
A seismic sensor cable is disclosed. The cable includes an outer jacket disposed on an exterior of the cable. The outer jacket excludes fluid from entering an interior of the cable. A reinforcing...
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...
7068568 Method of processing seismic data  
A method of de-ghosting seismic data acquired in a marine seismic survey comprises estimating ∂ z p (where p is the fluid pressure) from a time-derivative of p and a derivative of p in a...
7061829 Water bottom cable seismic survey cable and system  
A seismic sensor cable is disclosed. The cable includes an outer jacket disposed on an exterior of the cable. The outer jacket excludes fluid from entering an interior of the cable. A reinforcing...
7050355 Determining the orientation of a seismic receiver, a seismic receiver, and a method or seismic surveying  
The invention provides a method of determining the orientation of a seismic receiver ( 4, 6 ) from seismic data acquired at the receiver ( 4, 6 ). The determined orientation can be taken into...
7031223 Method for correcting seismic data for receiver movement during data acquisition  
A method is disclosed for processing seismic data. The method includes determining a position of a seismic energy source and seismic receivers at a time of actuation of the source. A velocity of...
6906982 Marine time-lapse seismic surveying  
A method for making a time-lapse seismic survey in a marine environment, the method designed to eliminate multiple surface reflections and changes in sea state and conditions. Seismic sources and...
6906981 Method and system for acquiring marine seismic data using multiple seismic sources  
A method for seismic surveying is disclosed which includes towing a first seismic energy source and at least one seismic sensor system. A second seismic energy source is towed at a selected...
6903999 System and method for estimating seismic material properties  
A method for estimating near-surface material properties in the vicinity of a locally dense group of seismic receivers is disclosed. The method includes receiving seismic data that has been...
6898148 Multi-step receiver-motion compensation  
The present invention provides methods to be used in seismic data processing to address problems encountered during data acquisition. The present invention provides a multi-step process to reduce...
6876599 Seismic data acquisition and processing method  
A method of acquiring and processing seismic data including: acquiring digitized seismic data associated with a plurality of moving receiver points using a plurality of seismic sensors; attenuating...
6836448 System and method for seismic wavefield separation  
A system and method of creating a filter for use with locally dense seismic data is disclosed. The method includes obtaining survey geometry characteristics from a locally dense seismic survey. A...
6826501 Method and apparatus for estimating water bottom reflection time difference  
The present invention provides a method for reducing water bottom reflection time differences. The method includes selecting a plurality of trace groups, each trace having an offset from a midpoint...
6801473 Method for estimating and removing artifact noise from seismic data  
A seismic signal is represented as a combination of a geologic signal and a noise signal. The representation of the seismic signal is decomposed into a linear combination of orthonormal components....
6791901 Seismic detection apparatus and related method  
Seismic detection apparatus comprising seismic detection means capable of detecting a plurality of seismic components over a defined tetrahedral volume is provided. The seismic detection means...
6751559 Method for suppressing noise from seismic signals by source position determination  
A method is disclosed for attenuating noise from marine seismic signals caused by a noise in the water. The method includes determining an arrival time of a noise event at each of a plurality of...
6721694 Method and system for representing the depths of the floors of the oceans  
A method for generating a model of a portion of the floor of a body of water from a plurality of depth measurement sources includes determining an overlap of any of the plurality of depth...
6681887 Method for the determination of local wave heights and acoustic sensor in marine seismic signals  
A method is provided for analyzing received seismic signals which are received from a plurality of seismic sensors in response to operation of an acoustic source during a marine seismic survey. The...
6674688 Method and system of acquiring seismic data in an area having periodic acoustic interference  
A seismic data acquisition method and system are shown. The method acquires seismic data using an acoustic source capable of producing a seismic signal and an acoustic receiver in an area having...
6606186 Dynamic fiber optic sensor signal processing scheme  
The claimed invention is an apparatus, method and system for optimizing bandwidth utilization of demodulators in a system for seismic signal processing, wherein the apparatus comprises demodulators...
6480440 Seismic receiver motion compensation  
A method of compensating for seismic receiver motion in a marine seismic survey wherein at least one receiver is towed behind a moving seismic vessel comprises producing an acoustic energy wave at...
6408978 Non-acoustic self noise canceller for sensor arrays  
A device for canceling non-acoustic self-noise associated with mechanically induced vibrations in sensor arrays and associated methods are described. The method utilizes the isolation of a...
6337636 System and techniques for seismic data acquisition  
A data acquisition system has a central station connected to a plurality of nodes over a network. Each node is connected to receive signals from one or more sensors ad each is configured to have...
6201764 Apparatus and method for correcting for capacitance variations in hydrophones  
A method and an apparatus are provided for matching the response of hydrophones 22 to the response of geophones 24 and significantly reducing response variations between hydrophones caused by...
6115325 Variable length data field in a seismic data stream  
A variable length data packet in a seismic system includes a fixed-length data portion and a variable-length data portion, the amount of data in the variable-length portion depending on the number...
6061298 Method of and system for processing multicomponent seismic data  
Methods and systems are provided for orientation of multicomponent geophones, for rotating traces, and for correcting polarity differences between traces. According to an example embodiment, a...
6058074 Method and system for detecting hydrocarbon reservoirs using amplitude-versus-offset analysis with improved measurement of background statistics  
A computer system and method of operating the same to apply overburden corrections to seismic signals prior to amplitude-versus-offset (AVO) analysis is disclosed. The system and method retrieve...
6049507 Method and apparatus for correcting effects of ship motion in marine seismology measurements  
An apparatus and method for removing the distortion in marine seismic data resulting from the motion of the ship. The ship trails one or more seismic sources and receivers and moves forward at a...
6034923 Seismic sensor pod  
A seismic sensor pod is provided for coupling to a seismic cable and establishing a substantially water tight connection between the seismic cable and a seismic sensor. The pod includes a housing...
Matches 1 - 50 out of 192 1 2 3 4 >