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9030909 Method of conducting a seismic survey  
A method of conducting a seismic survey of an area including a region of high seismic velocity regimes in a shallow overburden. According to the method, a zone is identified in which the boundary...
8948463 Method for analyzing seismic data  
A method for analyzing seismic data by generating a post-migration common image gather in a dip angle domain from measured seismic data; detecting concave features related to reflection events in...
8913460 Methods and apparatus to calculate a distance from a borehole to a boundary of an anisotropic subterranean rock layer  
A disclosed example method includes providing, in a borehole, a transmitter (Tx) and receivers (Rxs) spaced linearly from Tx at known distances, measuring linear propagation times (LPts) for a...
8902702 Methods and apparatus to image subsurface formation features  
Methods of and apparatus to image one or more subsurface formation features are disclosed. An example method includes generating acoustic waves with a transmitter and receiving the acoustic waves...
8902708 System and method for seismic beam formation that accounts for equipment misalignment  
Seismic data representing the propagation of seismic energy through a geologic volume of interest is processed. The seismic energy propagates through the geologic volume of interest from one or...
8760967 Generating an angle domain common image gather  
A technique includes processing first data indicative of a first image of a subsurface region of interest on a machine to generate second data indicative of a second image. The first image is...
8694262 System and method for subsurface characterization including uncertainty estimation  
A system and method for subsurface characterization including depth and structural uncertainty estimation is disclosed. In one embodiment, the method may include determining a detectability...
8614578 Attenuation of electromagnetic signals passing through conductive material  
The present disclosure relates to determining the attenuation of an electromagnetic signal passing through a conductive material. An antenna is provided and placed in relatively close proximity to...
8478531 Dip-based corrections for data reconstruction in three-dimensional surface-related multiple prediction  
A best fitting trace in seismic data is determined for a desired trace to be reconstructed. A dip-based correction is calculated per trace and per sample for differences in azimuth, common...
8326542 Method and system for retrieving seismic data from a seismic section in bitmap format  
A computer implemented method for retrieving seismic data from a seismic section provided in a bitmap format. The method includes reconstructing a two dimensional matrix of seismic interpolated...
8301385 Shot gather data beamer and debeamer  
Beamed data can be obtained from shot gather data, and debeamed data can be obtained from beamed data. Shot gather data for a geophysical volume of interest in a first domain and/or beamed data in...
8300498 Method for dynamic aperture determination for three-dimensional surface-related multiple elimination  
Dips are calculated for a series of sets of adjacent multiple contribution traces, from seismic data representative of subsurface formations, in the vicinity of a boundary of an aperture of a...
8233351 Analyzing borehole seismic data to locate subsurface diffractors  
A system and method for locating subsurface diffractors. The method operates on two-dimensional (2-D) seismic data that includes one or more 2-D seismic lines. The 2-D seismic data may be...
8213260 Fast residual migration of seismic data through parsimonious image decomposition  
A technique for performing a fast residual migration of seismic data through parsimonious image decomposition is presented. In one aspect, the technique includes a software-implemented method for...
8121791 Spectral shaping inversion and migration of seismic data  
A geophysical model of a subsurface region is generated based on seismic data, e.g., seismic reflection data. Migration and seismic inversion are applied to the seismic data to generate estimates...
8095320 Method, program product, and system for suppression of residual water bottom energy in surface seismic data  
Systems, program product, and methods of suppressing residual water bottom energy in seismic data, are provided. An example of a system, program product, and method can be applied to post-stack...
8045417 Analyzing 2-D surface and/or borehole seismic data to locate subsurface diffractors  
A system and method for locating subsurface diffractors. The method operates on two-dimensional (2-D) seismic data that includes one or more 2-D seismic lines. The 2-D seismic data may be...
7970546 Diplet-based imaging of seismic data in shot or receiver records  
Methods, systems, and software for representing seismic shot or receiver data as a superposition of a plurality of diplets are disclosed. The method includes decomposing one or more prestack shot...
7733741 Method for reducing 3-D migration operator to 2-D migration operator for inhomogeneous media  
Time slices of seismic data are transformed from rectangular space-time domain to cylindrical space-time domain. 2-D seismic migration is performed on the transformed data for each radial...
7640111 Method and system for interpreting borehole geological data  
Computer-based method and system are disclosed for interpreting dips, dip trends, and mineral based lithofacies data to identify certain geological events in a subsurface formation. The disclosed...
7545704 Performing 3-D scatterer imaging from 2-D seismic data  
A method for analyzing seismic data from a formation. The method may first receive two-dimensional (2-D) seismic data of a formation comprising a number of individual seismic lines acquired over...
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...
7505362 Method for data regularization for shot domain processing  
Method for interpolating aliased seismic data to generate shot records at regular shot points. The method involves sorting the data into common offsets to obtain the finer sampling in the...
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...
7400553 One-return wave equation migration  
A one-return wave equation migration is used to extrapolate both down-going and up-going waves. Followed by a properly designed imaging condition, the partial image contributed form turning waves...
7388808 Method for depth migrating seismic data using pre-stack time migration, demigration, and post-stack depth migration  
A method is disclosed for depth migrating seismic data. The method includes pre-stack time migrating the seismic data to form a stacked, time migrated image. The stacked, time migrated image is...
7355923 Seismic analysis using post-imaging seismic anisotropy corrections  
System and method for performing anisotropy corrections of post-imaging seismic data for a subsurface formation. The method may receive seismic data, preferably pre-stack seismic data comprising a...
7345951 Method of determining specular information after prestack seismic imaging  
Method of determining the specular source/receiver pairs associated with seismic images produced from a transformation of multi-offset seismic wave records as a function of time in the depth...
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...
6952379 Seismic method and apparatus for generating a semblance panel and computing the reflector dip  
A method of generating a semblance panel comprises summing two or more gathers of traces. The dip of the reflector is taken into account in the summation process, and this prevents semblance peaks...
6920084 Offset transformation to zero dip that preserves angle of incidence  
A method and apparatus for compensating acquired seismic data for the presence of dipping events are disclosed. The method includes migrating the acquired, unstacked seismic data; and spatially...
6681199 Peak time detecting apparatus and method  
A product-sum operation portion for performing a product-sum operation (wavelet transformation) with respect to an input time-series signal by using as a base of integral a complex function in...
6212477 Converted-wave analysis system and method  
Method and systems are provided for processing c-wave data resulting in less sensitivity to errors in p-wave velocity analysis. Therefore, according to one aspect of the invention, a process is...
6094621 Method for migration before summation  
A method for determining migration before summation including recording seismic reflection traces, for constituting a collection of traces to be migrated before summation and without weight...
6021094 Method of migrating seismic records  
The present invention provides a method of migrating seismic records that retains the information in the seismic records and allows migration with significant reductions in computing cost. The...
6018499 Three-dimensional seismic imaging of complex velocity structures  
Accurate and reliable traveltimes for a seismic exploration volume having a complex velocity structure are generated by selectively advancing a traveltime front at its minimum traveltime grid...
5999488 Method and apparatus for migration by finite differences  
An improved method for eliminating reflections from artificial model boundaries encountered in finite-difference acoustic wave propagation computations is based on applying two different boundary...
5991237 Method for the determination of migration velocities in seismic processing  
A method for the determination of migration velocities in seismic processing in which a blasting point S is associated with receivers (R1 to Rn) which are separated by offsets such that in a given...
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...
5982707 Method and apparatus for determining geologic relationships for intersecting faults  
A novel fault framework method and apparatus automatically computes the relationships between intersecting fault surfaces. When faults are loaded into the novel fault framework apparatus, all...
5903515 Spatial de-aliasing of the 3-D Kirchhoff DMO operator  
A method for generating an unaliased 3-D DMO operator using two dimensional sampling theory to the spatial traverse of the operator as well as to the temporal axis. First a continuous DMO operator...
5812493 Method of representing the trajectory of at least one borehole in a space-time domain  
A method for representing in a space-time domain the trajectory of at one borehole by: a) producing a velocity-depth model (4) tied to the borehole (1), geologically representative of said area...
5808964 Processing method for obtaining zero-offset seismic data by depth domain stacking  
The object of the method according to the invention is to synthesize zero-offset seismic data from data acquired within the scope of three-dimensional (or possibly two-dimensional) multiple-offset...
5764514 Method for modelling kinematic seismic data processed with at least one motion operator  
A method of modelling at least travel time and apparent dip from seismic data that has been processed by at least one migration operator comprising the steps of taking the mid-point (N1) of a...
5724309 Method for geophysical processing and interpretation using instantaneous phase and its derivatives and their derivatives  
A method for utilizing instantaneous phase and the derivatives of instantaneous phase as display and/or plot attributes for seismic reflection data processing and interpretation for...
5724310 Traveltime generation in the presence of velocity discontinuities  
An array of output image points is distributed over a velocity model of a subsurface region of interest. A fan of rays is shot from each of a plurality of acoustic source points along the surface,...
5719822 Seismic data radon dip moveout method  
A method of processing seismic signal data that uses a special Radon transform for dip moveout (DMO) including the steps of applying conventional pre-DMO steps to the traces, applying a special...
5717655 Method for providing uniform subsurface coverage in the presence of steep dips  
A method for minimizing non-uniform insonification of subsurface formations in the presence of steep dips when advancing a swath of elongated parallel seismic streamer cables along a line of...
5642328 Method for determining validity of seismic reflections below lateral velocity variations  
A method for determining the reliability of time processed seismic reflection data near a significant velocity differential overhang includes displaying the seismic reflection data as a seismic...
5640368 Migration velocity analysis using limited-aperture and monte carlo migration  
Disclosed is a method for efficiently and accurately determining subsurface velocities for use in migration of seismic data. The method calls for restricting the number of traces considered to...

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