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8902706 Technique and apparatus for seismic data quality control using non-linear regression analysis  
A technique includes receiving seismic data acquired in a seismic survey. The technique includes determining a geophysical trend of trace amplitudes indicated by the seismic data based on...
8879354 Method of acquiring vibroseismic data concerning a zone of the subsoil, and seismic exploration method including such a method  
The invention concerns a method of acquiring vibroseismic data concerning a zone of the subsoil. This method comprises the following steps: —operating a vibroseismic source so that it transmits a...
8724427 Method for correcting input seismic traces from dissipative effects  
A method and apparatus for correcting an input seismic trace. The method includes receiving the input seismic trace and creating a t by Q gather using the input seismic trace, where t represents...
8639443 Microseismic event monitoring technical field  
A microseismic monitoring system includes a seismic sensor positioned proximate to a wellbore traversing a formation; an orientation source producing an orientation shot; a hydraulic apparatus...
8611184 Method for estimating absorption parameter Q(T)  
A method and apparatus for a method for generating an estimated value of absorption parameter Q(t). In one embodiment, the method includes receiving an input seismic trace, applying a time variant...
8553498 Q tomography method  
Method for reconstructing subsurface Q models (110) from seismic data (10) by performing ray-based (60), centroid frequency shift (50) Q tomography. The seismic source waveform's amplitude...
8233350 Frequency shift reservoir localization  
A method and system of detecting and mapping a subsurface hydrocarbon reservoir includes acquiring seismic data having a plurality of components, applying a data transform to the seismic data to...
8164979 System and method for acquisition and processing of elastic wavefield seismic data  
A system and method of acquiring and processing full elastic waveform data from a vertical-force source comprises providing seismic waves into the earth from the vertical-force source, sensing...
8139440 Spectral conditioning for surface seismic data  
A method for spectrally conditioning surface seismic data. In one implementation, the method may include correcting surface seismic data for distortions due to anomalous spectral amplitudes,...
8040754 System and method for acquisition and processing of elastic wavefield seismic data  
A system and method of acquiring and processing full elastic waveform data from a vertical-force source comprises providing seismic waves into the earth from the vertical-force source, sensing...
8041510 Continuous reservoir monitoring for fluid pathways using microseismic data  
A system and method monitor a hydrocarbon reservoir for drainage in volumetric three dimensions. Monitoring between wells is imperative for optimum reservoir management and is achieved by mapping...
7974785 Method for quantitative evaluation of fluid pressures and detection of overpressures in an underground medium  
Method for evaluating fluid pressures in an underground zone by means of seismic and well data. The zone studied is divided into several time analysis intervals. For each of these intervals, a...
7948826 Limited 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. The methods comprise the steps of assembling seismic data into common geometry...
7821869 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...
7725265 VH signal integration measure for seismic data  
A method and system of processing seismic data includes acquiring three-component seismic data and combining horizontal components of the three-component seismic data to obtain a merged horizontal...
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...
7663970 Method for passive seismic emission tomography  
A method for seismic event mapping includes transforming seismic signals recorded at selected positions into a domain of possible spatial positions of a source of seismic events. An origin in...
7663971 Resonance scattering seismic method  
Resonance scattering analysis of at least 3-component (3-C) VSP data detects heterogeneities in the proximity of a borehole. A method for seismic exploration of a pre-determined volume of the...
7657375 Method and apparatus for correcting underestimation of formation anisotropy ratio  
A method, apparatus and computer-readable medium for evaluating an earth formation includes making measurements with a logging tool having a first depth of investigation in a borehole in the earth...
7555389 Creating an Absorption Parameter Model  
To generate an absorption parameter model, estimated values of an effective absorption parameter are received, where the estimated effective absorption parameter values represent absorption...
7539578 VH signal integration measure for seismic data  
A method and system of processing seismic data includes acquiring three-component seismic data and combining horizontal components of the three-component seismic data to obtain a merged horizontal...
7525873 Seismic inversion of conditioned amplitude spectra  
According to a preferred aspect of the instant invention, there is provided herein a system and method for using both a temporal zone of seismic data and conditioned amplitude spectra thereof to...
7453764 Method of imaging in an underground formations steep-sloping geologic interfaces, giving rise to prismatic reflections  
A method of imaging in an underground formation one or more steep-sloping geologic interfaces, which are not necessarily in a plane, by forming with primary reflectors, which are not necessarily...
7366054 Tau-P filters for removal of noise from seismic data  
Methods of processing seismic data to remove unwanted noise from meaningful reflection signals are provided for. The methods comprise the steps of assembling seismic data into common geometry...
7343245 Method of processing seismic data to extract and portray AVO information  
A method of seismic analysis is disclosed for extracting information relating to lithology, porosity, fluids, and AVO types and/or displaying the extracted information. In one possible embodiment,...
7333393 Amplitude correction for seismic recordings  
A new approach is described based on reciprocity for estimating acquisition-related effects, which has several advantages over conventional surface-consistent processing techniques: (i) It can be...
7283422 Systems for low frequency seismic and infrasound detection of geo-pressure transition zones  
Methods for determining the existence and characteristics of a gradational pressurized zone within a subterranean formation are disclosed. One embodiment involves employing an attenuation...
7239578 Removal of noise from seismic data using radon transformations  
Methods of processing seismic data to remove unwanted noise from meaningful reflection signals are provided for. The methods comprise the steps of assembling seismic data into common geometry...
7230879 Method and apparatus for true relative amplitude correction of seismic data for normal moveout stretch effects  
The present invention provides a method and apparatus for arriving at true relative amplitude destretched seismic traces from stretched seismic traces. The method compensates for offset varying...
7167414 Amplitude preserving prestack migration method  
A method is disclosed for amplitude preserving Kirchhoff time migration. The method includes calculating estimates of the geometrical spreading terms using a constant velocity approximation....
7110323 Method, system and apparatus for interpreting seismic data using duplex waves  
A Method for Interpreting Seismic Data Using Duplex Waves is described. Whereas substantially horizontal boundaries are readily identified using conventional processing methods based on primary...
7095677 Crossplot analysis of A.V.O. anomolies in seismic surveying  
A method of seismic data analysis to provide clustering of A.V.O. data into A.V.O. anomaly types, the method comprising: obtaining successive values of a plurality of seismic attributes, each...
7079449 Methods and systems for low frequency seismic and infrasound detection of geo-pressure transition zones  
Methods for determining the existence and characteristics of a gradational pressurized zone within a subterranean formation are disclosed. One embodiment involves employing an attenuation...
6987706 Removal of noise from seismic data using high resolution radon transformations  
Methods of processing seismic data to remove unwanted noise from meaningful reflection signals are provided for. The seismic data is transformed from the offset-time domain to the time-slowness...
6985404 Method and apparatus of performing amplitude variation with offset analysis  
A method for performing amplitude variation with offset (AVO) analysis of a plurality of seismic data traces. The method includes fitting at least a two-term AVO equation to at least three seismic...
6950371 Method for signal-to-noise ratio enhancement of seismic data using frequency dependent true relative amplitude noise attenuation  
A method for enhancing signal-to-noise (S/N) ratio of seismic data is presented. An ensemble of input traces is decomposed into a plurality of frequency bands of traces. Trace and signal power and...
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...
6757216 Method for post processing compensation of amplitude for misaligned and misstacked offset seismic data  
A method for assessing the suitability of seismic data for quantitative amplitude analysis, where the concern is excessive residual normal moveout (RNMO). The invention uses a near offset stack...
6343256 Illumination corrections to reduce geometrical artifacts in seismic data  
A method for correcting seismic amplitudes for geometrical artifacts resulting in non-uniform illumination of reflector surfaces. The illumination is calculated for each offset as a function of...
6317384 Method for geophysical processing and interpretation using seismic trace difference for analysis and display  
A method for identifying faults and stratigraphic features within seismic data without interpreter bias by processing seismic data to identify the minimum difference between seismic traces. Large...
6278950 Turning-wave amplitude inversion  
A method for compensating for amplitude loss in a set of seismic traces, where the amplitude loss is caused by shallow attenuation anomalies. Attenuation factors are calculated from first-arrival...
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...
6041017 Method for producing images of reservoir boundaries  
A method of producing images of the limits of a geologic reservoir from measurements of fluid pressure in a well controlled to produce from the reservoir at a constant flow rate. The measurements...
6028820 Method for determining the presence of fluids in a subterranean formation  
A method for seismic data interpretation for the purposes of identification of oil, gas and water accumulation locations and delineation of their contours uses a model of discrete media with...
6026057 Method and system for correcting for offset-dependent directivity effects in seismic survey signals  
A method and computer system for correcting seismic signals in a seismic survey, sensed in horizontal and vertical directions at receiver locations, is disclosed. According to the disclosed method...
6014342 Method of evaluating a subsurface region using gather sensitive data discrimination  
A method of evaluating a subsurface region by separating/enhancing a certain type of seismic event data of interest from an overall set of seismic event data which includes other, different types...
5978314 Method for determining seismic velocities  
A method for determining a substantially optimal NMO velocity function for use in stacking a CMP gather of seismic data traces. The method begins with an initial estimate of the NMO velocity...
5946271 Calibration system for use in time lapse tomography  
A discrete, minimally-equipped standard seismic calibration system is permanently installed over a subsurface reservoir structure that contains fluids of economic interest. Changes in the fluid...
5862100 Method and system for detecting hydrocarbon reservoirs using statistical normalization of amplitude-versus-offset indicators based upon seismic signals  
A method and system for producing an indicator for amplitude-versus-offset (AVO) analysis of seismic survey data is disclosed. According to the disclosed method and system, a raw AVO indicator is...
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...

Matches 1 - 50 out of 162 1 2 3 4 >