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8537637 Method of seismic surveying and a seismic surveying arrangement  
A method of seismic surveying A method of seismic surveying comprises the step of acquiring imaging seismic data relating to an underlying geological structure at a survey location and...
8509027 Continuous adaptive surface wave analysis for three-dimensional seismic data  
A technique includes receiving seismic data acquired in a survey of a region, the region being associated with locations; processing the seismic data to estimate at least one frequency dependent...
8441890 Removing ground-roll from geophysical data using source-receiver interferometry  
A method for processing geophysical data. The method includes applying a first interferometry on an estimate of a direct ground roll between a receiver location and one or more boundary source...
7466626 Seismic surveying arrangement  
A seismic surveying arrangement comprises a vertical source array (26) having at least two sources (27,28) of seismic energy. The source array (26) is disposed such that a first source (28) is...
7414919 Method for improving the seismic resolution  
A method for improving the seismic resolution in the field of petroleum exploration and development, using the steps of: (1) ensuring the depth and the velocity of the low-velocity layer and the...
7408836 Method of and apparatus for processing seismic data in the presence of anisotropy  
A method of and apparatus for processing seismic data. A method of processing seismic data comprising the steps acquiring seismic data in at least two shots that have different source-receiver...
7154812 Method for retrieving local near-surface material information  
The invention concerns a method for retrieving local near-surface material information including the steps of:—providing a group of receivers comprising at least one buried receiver and at least...
6982928 Seismic P-wave velocity derived from vibrator control system  
P-wave velocity in a near-surface region of a land area is estimated from a combination of seismic data based upon waves in the near-surface region generated in response to a shock in each of a...
6868037 Use of drill bit energy for tomographic modeling of near surface layers  
A method for tomographic modeling of seismic wave travel times from well drilling records generated by drill string vibrations during drilling and identifying in the recorded vibration at least...
6612398 Methods for measurement, analysis and assessment of ground structure  
For determination of the laminar structure and other characteristics of a ground, oscillation sensors for detecting the vertical component or vertical and horizontal components of oscillations are...
6081482 Semi-recursive imaging under complex velocity structures  
A computationally efficient semi-recursive Kirchhoff migration algorithm is capable of obtaining accurate images of complex structures in complex geological environments which commonly give rise...
5764516 Method and system for surface-consistent phase and time lag correction of seismic data  
A computer system and method for correcting seismic data for phase distortion due to the effects of the near-surface layer are disclosed. Phase error corrections are performed on multiple...
5629905 Method of datuming seismic data and method of processing seismic data  
Disclosed is a method of datuming seismic trace data from a first horizon to a lower second subsurface horizon, both located above a target horizon. A seismic source and receiver are positioned...
5587968 Method for measuring the near-surface shear wave velocity for use in determining 3-component 3-D statics  
In the presence of an anisotropic near-surface earth layer, orthogonally oriented microspreads are provided from which shear-wave velocity vectors Vsiθ and Vsθ may be determined. The respective...
5532976 Curved-ray replacement dynamics  
A method of geophysical prospecting wherein nonhyperbolic distortion is reduced from marine seismic data, or land seismic data over a low seismic velocity layer, is disclosed. The method comprises...
H001529 Method for wave equation velocity replacement of the low-velocity-layer in seismic data processing  
A method for correcting seismic data for the effects of the low-velocity-layer. According to the method, estimates of the seismic velocity in the low-velocity-layer and the depth of the...
5502687 Method for datumizing seismic data by forward modeling  
Disclosed is a method for processing geophysical data that have been gathered over irregular topography. According to the method, a datum is established that lies above the highest topographic...
5500832 Method of processing seismic data for migration  
Disclosed is a technique for processing seismic data to enable the data to be migrated without stacking. Seismic data provided in common midpoint gathers are converted to a domain defined in terms...
5157638 Method of deriving statics corrections from common reflection point gathers  
A method for static correction includes a three step process which eliminates the problems of assuming hyperbolic moveout curves and forming base traces from common midpoint gathers while...
5073876 Geophysical exploration using near surface structure corrections developed from common endpoint gather stacked traces  
Weathering corrections are determined from first arrival times of refraction stacked traces of common end point gathers. The refraction stacked traces are generated by selecting traces having...
5051960 Method of removing records of multiple reflection events from seismic data  
A method of removing multiple reflection events from seismic records is described. A shallow primary reflection event is used as a model for a deeper primary, and is distorted responsive to the...
5010976 Characterization of the full elastic effect of the near surface on seismic waves  
A method of seismic exploration uses recordings from both surface receivers and buried sensors to determine the full elastic effect of the near surface layer on an applied seismic wave. The...
4943950 Method for migrating seismic data  
A method for properly migrating seismic data which has been elevation-static corrected. The method is comprised of assigning a zero (or very small) migration velocity for data located below a...
4750157 Seismic vibrator earth impedance determination and compensation system  
An earth impedance determination and compensation system for use with a seismic vibrator utilizes output signals from accelerometers on the baseplate and reaction mass portions of the vibrator to...
4695984 Method for establishing a surface consistent correction for the effects of the low velocity layer in seismic data processing  
A method useful in seismic data processing for correcting data for the effects of the low velocity layer. At least three sets of traces having common offsets are displayed as a function of...
4581724 Method for determining source and receiver statics in marine seismic exploration  
A method of determining source and receiver statics in a marine exploration area overlying a near surface low velocity layer employing a marine vessel for towing a seismic energy source and a...
4415997 Method for determining source and receiver statics in marine seismic exploration  
A method of determining source and receiver statics in a marine seismic exploration area overlying a near surface low velocity layer employing a seismic marine energy source, an on-bottom seismic...
4218766 Method of seismic wave amplitude normalization  
Disclosed is a method of processing geological seismic reflection data to compensate for lateral variations in the attenuation effect which the weathered layer has on the reflected seismic energy...
4069471 Method of determining weathering corrections in seismic record processing  
The method of determining the magnitude of the differential static correction between two selected adjacent receiver points D, E, in a linear seismic array, that involves the steps of: recording a...
3794827 INVEL SYSTEM OF VELOCITY DETERMINATION  
This is a new way of compositing multifold common-depth-point data from seismic prospecting operations to improve the making of static corrections, particularly when determining velocity. Such...
3731269 STATIC CORRECTIONS FOR SEISMIC TRACES BY CROSS-CORRELATION METHOD  
A method is disclosed for determining source-to-datum corrections for a multitrace seismic cross-section. The method comprises the measurement of a multiplicity of cross-correlation functions...
3697939 CORRECTIONS FOR SEISMIC DATA OBTAINED FROM EXPANDING-SPREAD  
Seismic signals from detectors forming split spreads are utilized to correct for weathering, elevation, and the like signals from detectors forming an expanded spread. The signals of the seismic...
3569922 METHOD FOR ELIMINATING SELECTED NOISE DISTURBANCES FROM SEISMIC RECORDINGS  
A method for attenuating undesirable seismic noise disturbances by providing an effective adjustable attenuation bandwidth between the attenuation afforded by the geophone spread and stacking. The...
3500543 METHOD FOR EDITING SEISMIC TRACES  
3323104 Hybrid computer to make dynamic and static seismic record corrections  
3284765 Apparatus for establishing a common datum plane  
3247481 Method and apparatus for displaying seismic signals  
3185249 Computing seismic information  
3143946 Method for forming seismic and other records  
3143055 Seismic section correction device  
3065814 Seismic weathering correction  
3046553 Seismic reproducing and recording device  
3045241 Oscillographic camera  
3012223 Seismic prospecting apparatus  
3011145 Photographic printing system for channelized multiple trace records  
2990535 Seismic equipment  
2946393 Method of seismic prospecting  
2937915 Recording system  
2884194 Analog computer to determine seismic weathering time corrections  
2851122 Seismic exploration methods, systems, and apparatus  

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