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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...
7564740 Methods of enhancing separation of primary reflection signals and noise in seismic data using radon transformations  
Improved methods of processing seismic data which comprise amplitude data assembled in the offset-time domain in which primary reflection signals and noise overlap are provided for. The methods...
7561491 Radon transformations for removal of noise from seismic data  
Methods of processing seismic data to remove unwanted noise from meaningful reflection signals are provided for. Assembled seismic data are transformed from the offset-time domain to the...
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...
7505360 Fast 3-D surface multiple prediction  
A method and apparatus for predicting a plurality of surface multiples for a plurality of traces in a record of seismic data. In one embodiment, the method includes providing a plurality of target...
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...
7466625 Noise estimation in a vector sensing streamer  
A method includes recording a first set of data using a first type of sensor; recording a second set of data using a second type of sensor, the first and second sets of data being contemporaneously...
7453765 Scattering diagrams in seismic imaging  
The analysis of scattering diagrams of the correlation-type representation theorem in inhomogeneous media is improved by the use of virtual events. Virtual events here are events which are not...
7450468 Methods, systems, and computer readable media for interactively determining parameters for ocean-bottom hydrophone/geophone receiver combination deghosting  
Methods, systems, and computer readable media are provided for interactively determining optimum deghosting parameter values for suppressing ghost reflections. Seismic data are obtained from...
7418349 Method of and apparatus for processing seismic data  
A method of processing seismic data that includes including first and second modes of seismic energy where the second mode has been generated by partial mode conversion of the first mode at a...
7386397 Processing seismic data  
A method of determining a vertical component of particle velocity from seismic data acquired using at least one receiver disposed within a water column comprises determining the vertical component...
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...
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...
7286938 Method of and an apparatus for processing seismic data  
A method is provided of processing multi-component seismic data acquired by emitting multi-component seismic energy at a source location and acquiring seismic data at a multi-component seismic...
7181347 Method for the 3-D prediction of free-surface multiples  
Method and apparatus for predicting surface multiples, which includes (a) selecting a target subsurface line (SSL); (b) selecting an input SSL within an aperture of the target SSL; (c) selecting a...
7126875 Underwater energy dampening device  
An underwater energy dampening device is disclosed. This device includes a plurality of vertically-spaced bubble producing units. With bubbles produced at various depths, the present invention can...
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...
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...
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...
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...
6903998 Method for acquiring and processing seismic survey data using ocean bottom cables and streamers  
A method is disclosed for marine seismic surveying in which a seismic signal is detected in a body of water with a motion sensor and a pressure sensor positioned at a location proximate the bottom...
6894948 Method for processing dual sensor seismic data to attenuate noise  
A method is disclosed for processing seismic data from concurrently recorded co-located pressure sensors and geophones. The seismic data are processed by first determining an upgoing wavefield and...
6891776 Vibrator sweep shaping method  
This invention relates to improved methods to generate shaped sweeps, and for the acquisition of vibroseis data with a shaped pilot sweep.
6775618 Method and system for reducing effects of sea surface ghost contamination in seismic data  
An improved de-ghosting method and system that utilizes multi-component marine seismic data recorded in a fluid medium. The method makes use of two types of data: pressure data that represents the...
6747913 Method and system for deghosting  
In one embodiment the invention comprises a method for receiving an acoustic wavefield beneath the surface of the water in which at least a portion of an acoustic wavefield is received at a first...
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...
6678207 Trapped water bottom multiple and peg-leg multiple suppression for ocean bottom seismic data  
The invention is a method for removing trapped water bottom multiples, receiver side peg-leg multiples, and source side peg-leg multiples from dual sensor OBC data, where the data includes both...
6654694 Method and system for evaluating quality of deghosted seismic data  
A method is disclosed for controlling the quality of seismic data acquisition. The method includes generating a scattered acoustic wavefield and receiving at least a portion of the scattered...
6606278 Method for multiple suppression based on phase arrays  
An apparatus and method for suppressing multiples in the collection of marine seismic data comprises at least one source positioned in the body of water; at least one receiver positioned in the...
6493636 Method of marine seismic exploration utilizing vertically and horizontally offset streamers  
A method and apparatus for acquiring high resolution 3D marine seismic data using at least two seismic streamers which are generally parallel to one another longitudinally, and offset from one...
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...
6188963 Method and system for deriving receiver separation and depth dual phone seismic surveys  
A method for accurately determining travel time separation between dual vertically spaced hydrophones below a water surface to achieve separation of pressure wavefields into an up-going and a...
6169959 Method of predicting kinematics for surface multiples  
Traveltimes of multiply reflected seismic events in a seismic profile or a model are determined from traveltimes for primary events. The traveltimes for the primary events may be obtained by ray...
6141623 Method of deriving water bottom reflectivities in the presence of geologic interference  
In a marine seismic survey, water bottom travel times are obtained by conventional methods. Near offset seismic data are then dereverberated using a suite of possible water bottom reflection...
6101448 Multiple attenuation of multi-component sea-bottom data  
A method of attenuating multiples in signals recorded during a marine seismic survey is described using a multi-component data set of the survey and summing selected components of the data set...
6091668 Static marine seismic system and method  
A system and method for periodically providing information about subsurface formations in a marine environment using a non-towed seismic signal source (3) and a static array of seismic signal...
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...
6021092 Method for deriving surface consistent reflectivity map from dual sensor seismic data  
A method for determining water bottom reflectivities whereby pressure signals and velocity signals are combined to generate combined signals having signal components representing...
5991238 Weighted backus filter method of combining dual sensor traces  
A method for attenuating water column reverberations in a dual sensor seismic signal, whereby a pressure signal and a velocity signal are transformed from the time domain to the frequency domain,...
5986973 Energy minimization in surface multiple attenuation  
A marine seismic signal is transformed from time domain into frequency domain and represented by matrix D. The marine data signal is truncated in time, transformed into the frequency domain and...
5963507 Method for improving the accuracy of ocean bottom reflectivity estimations using the inverse backus filter  
A method for determining ocean bottom reflectivities from dual sensor seismic data, whereby a first time windowed pressure signal and a first windowed velocity signal are summed to generate a first...
5959938 Tuned bubble attenuator for towed seismic source  
An apparatus and method for modifying the seismic source signal from air guns towed behind a marine seismic vessel. At least one conduit is towed behind the vessel to release bubbles into the...
5835451 Offshore seismic prospecting method using a hydrophone-geophone sensor pair  
A method of seismic prospecting offshore by means of at least one pair of hydrophone-geophone sensors disposed at the water bottom, in which a sound source at the surface of the water emits a sound...
5825716 Method of reverberation removal from seismic data and removal of dual sensor coupling errors  
A method for eliminating the influence of multiple reflections in seismic data by determining an up going and down going vector wave-field from the vector wave-field, determining a product of the...
5793702 Method for measuring the water bottom reflectivity  
The two-way water-layer travel time, τ, is derived from duel-mode seismic sensor data by cross-correlating the Fourier transforms of the sum and difference of the velocity and pressure signatures....
5774417 Amplitude and phase compensation in dual-sensor ocean bottom cable seismic data processing  
A method and computer system for applying corrections to dual sensor ocean bottom cable marine seismic signals, for purposes of eliminating ghosts and reverberations, are disclosed. According to...
5774416 Method and device for attenuating water column reverberations using co-located hydrophones and geophones in ocean bottom seismic processing  
In ocean bottom seismic exploration, it is common for co-located hydrophones and geophones to be deployed on the ocean bottom. One problem encountered is the water column reverberation. An improved...
5757723 Method of processing data representing energy passing through a medium  
A method is provided for processing data representing energy passing through a medium and subjected to multiple internal reflections. The method may be applied to reflection data, in which case...
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